CN214294474U - 3D printing device for continuous fiber reinforced thermosetting composite material - Google Patents
3D printing device for continuous fiber reinforced thermosetting composite material Download PDFInfo
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- CN214294474U CN214294474U CN202023342341.7U CN202023342341U CN214294474U CN 214294474 U CN214294474 U CN 214294474U CN 202023342341 U CN202023342341 U CN 202023342341U CN 214294474 U CN214294474 U CN 214294474U
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Abstract
The utility model relates to the technical field of additive manufacturing, in particular to a 3D printing device of a continuous fiber reinforced thermosetting composite material, which comprises a printing driving mechanism, wherein a first printing module and a second printing module are arranged on the printing driving mechanism; the first printing module comprises a first printing spraying cavity, the upper end of the first printing spraying cavity is connected with a wire feeding unit and a resin soaking unit, the middle end of the first printing spraying cavity is provided with a heating unit, and the lower end of the first printing spraying cavity is provided with a first printing nozzle; the second printing module comprises a second printing spray cavity and a resin supply unit connected with the second printing spray cavity, and a second printing spray head is arranged at the lower end of the second printing spray cavity; a curing and heating module is arranged on one side of the first printing module; the utility model discloses a fibrous abundant flooding can be guaranteed to the structure of two printing shower nozzles, sets up the normal position fast curing that the solidification heated module made thermosetting resin, realizes continuous fibers reinforcing thermosetting composite's printing.
Description
Technical Field
The utility model relates to an additive manufacturing technical field especially relates to a continuous fibers reinforcing thermosetting combined material's 3D printing device.
Background
In the field of composite materials, fiber reinforced resin based composite materials have the advantages of high specific strength, strong corrosion resistance, good heat conductivity and the like, and are widely applied to the industries of metallurgy, national defense, electronics, energy and petrochemical industry. The forming process of the traditional fiber reinforced resin matrix composite material is generally complex in manufacturing process, secondary processing is needed, and the production period is long; most of the manufacturing needs moulds, so the cost is higher; the traditional manufacturing process needs procedures such as gluing or assembling, the complexity of the finished piece is limited, and the application of the composite material is greatly limited. The additive manufacturing technology has been a research hotspot in recent years due to the characteristic that the additive manufacturing technology can be used for forming any complex shape. Additive manufacturing is a technology for manufacturing solid parts by adopting a method of gradually accumulating materials, and is a manufacturing method from bottom to top compared with the traditional material removal-cutting processing technology. Compared with the traditional fiber composite material forming preparation process, the material increase manufacturing process is simpler, and has the advantages of resource saving, harmless production process, high printing utilization rate of the product and the like, and meanwhile, the structural design and manufacturing integrated process of the composite material product manufactured without a die can be realized, so that the development period can be shortened, and the development cost can be saved.
At present, 3D printing of fiber reinforced resin matrix composite materials mainly focuses on chopped fibers or continuous fiber reinforced thermoplastic resin matrix composite materials, and research on 3D printing technology of continuous fiber reinforced thermosetting resin composite materials is little.
In practical research, the 3D printing technology of the continuous fiber reinforced thermosetting resin composite material is found to be mainly characterized in that the thermosetting resin is converted between a glass state and a viscous state to prepare the 3D printing wire of the continuous fiber reinforced thermosetting resin composite material, the wire bundle is subjected to secondary infiltration under the combined action of a heating head and a printing nozzle based on an FDM principle and is printed and formed, finally, the preformed body is filled with sodium chloride powder, and high-temperature curing is carried out through vacuum pressurization to obtain a final formed part.
SUMMERY OF THE UTILITY MODEL
Technical process to the aforesaid existence is comparatively loaded down with trivial details, and is inefficient, can not realize the technical problem of the normal position solidification of resin, the utility model provides a continuous fibers reinforcing thermosetting composite's 3D printing device adopts the structure of two printing shower nozzles, can guarantee fibrous abundant flooding, sets up the normal position fast cure that the solidification heated module made thermosetting resin, realizes continuous fibers reinforcing thermosetting composite's printing.
In order to solve the technical problem, the utility model provides a technical scheme as follows:
A3D printing device for continuous fiber reinforced thermosetting composite materials comprises a printing driving mechanism, wherein a first printing module and a second printing module are mounted on the printing driving mechanism;
the first printing module comprises a first printing spraying cavity, the upper end of the first printing spraying cavity is connected with a wire feeding unit and a resin soaking unit, the middle end of the first printing spraying cavity is provided with a middle end heating unit, and the lower end of the first printing spraying cavity is provided with a first printing nozzle;
the second printing module comprises a second printing spray cavity and a resin supply unit connected with the second printing spray cavity, and a second printing spray head is arranged at the lower end of the second printing spray cavity;
and a curing and heating module is arranged on one side of the first printing module.
Optionally, a guide wheel is arranged between the wire feeding unit and the first printing spray cavity, so that tensile stress is applied to the fibers, and subsequent fiber aggregation, easy centering and one-time impregnation are realized.
Optionally, the infiltration resin unit includes a first liquid supply pump and a first resin tank connected to the first liquid supply pump, the first resin tank is loaded with resin, and the resin in the first resin tank is transported to the first print spraying cavity under the action of the first liquid supply pump.
Optionally, the resin supply unit includes a second liquid supply pump and a second resin tank connected to the second liquid supply pump, the second resin tank is loaded with resin, and the resin in the second resin tank is transported to the second printing and spraying cavity under the action of the second liquid supply pump.
Optionally, the first printing module further includes a mounting bracket, and the mounting bracket is disposed on the first printing spray cavity;
the curing and heating module is arranged on the mounting bracket, so that the positions of the first printing module and the curing and heating module can be uniformly adjusted.
Optionally, the middle-end heating unit is a heating coil, and provides a uniform heating effect.
Optionally, the curing and heating module is a microwave directional heater, and the in-situ rapid curing of the thermosetting resin is realized by utilizing the property that microwave heating belongs to intramolecular heating.
Optionally, pinch rollers are arranged on two sides of the second printing nozzle, so that residual gas in resin is removed, the porosity between layers is reduced, the layered cross section is eliminated, the density of the part is improved, and the interlayer bonding force is improved.
Compared with the prior art, the beneficial effects of the utility model reside in that: the utility model provides a pair of continuous fibers reinforcing thermosetting combined material's 3D printing device adopts the structure of two printing shower nozzles, can guarantee fibrous abundant flooding, sets up the normal position fast curing that the heating module of solidification made thermosetting resin, realizes continuous fibers reinforcing thermosetting combined material's printing.
Drawings
Fig. 1 is an overall structure schematic diagram of a 3D printing apparatus for continuous fiber reinforced thermosetting composite material provided in an embodiment of the present invention.
Wherein, 1 is a first printing module; 11 is a first printing spray cavity; 12 is a wire feeding unit; 13 is a soaking resin unit; 14 is a middle heating unit; 15 is a first print head; 16 is a guide wheel; 2 is a second printing module; 21 is a second printing spray cavity; 22 is a resin feed unit; 221 is a second liquid supply pump; 222 is a second resin tank; 23 is a second printing nozzle; 24 is a pinch roller; 3 is a curing heating module; and 4, a mounting bracket.
Detailed Description
In order to explain the technical solution of the present invention in detail, the following will combine the drawings of the embodiments of the present invention to perform clear and complete description on the technical solution of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
For example, a 3D printing apparatus for a continuous fiber reinforced thermosetting composite material includes a printing driving mechanism, on which a first printing module and a second printing module are mounted; the first printing module comprises a first printing spraying cavity, the upper end of the first printing spraying cavity is connected with a wire feeding unit and a resin soaking unit, the middle end of the first printing spraying cavity is provided with a middle end heating unit, and the lower end of the first printing spraying cavity is provided with a first printing nozzle; the second printing module comprises a second printing spray cavity and a resin supply unit connected with the second printing spray cavity, and a second printing spray head is arranged at the lower end of the second printing spray cavity; one side of the first printing module is provided with a curing and heating module.
The 3D printing device of continuous fibers reinforcing thermosetting combined material that this embodiment provided adopts the structure of two printing shower nozzles, can guarantee fibrous abundant flooding, sets up the normal position fast curing that the heating module of solidification made thermosetting resin, realizes continuous fibers reinforcing thermosetting combined material's printing.
As shown in fig. 1, a 3D printing device for continuous fiber reinforced thermosetting composite material comprises a printing driving mechanism, wherein a first printing module 1 and a second printing module 2 are installed on the printing driving mechanism, and the first printing module and the second printing module can be adjusted and moved in the X direction, the Y direction or the Z direction under the action of the printing driving mechanism, so as to realize a complete printing process.
The first printing module 1 comprises a first printing spray cavity 11, the first printing spray cavity is used for preprocessing composite materials, the upper end of the first printing spray cavity is connected with a wire feeding unit 12 and an infiltration resin unit 13, the wire feeding unit provides fiber tows to the first printing spray cavity, the infiltration resin unit provides resin to the first printing spray cavity, a middle end heating unit 14 is arranged at the middle end of the first printing spray cavity and provides heating effect, fiber aggregation, easy centering and one-time infiltration are achieved, the surfaces of the fibers are coated with gel-state thermosetting resin, and the gel-state thermosetting resin is extruded out through a first printing spray head 15 at the lower end of the first printing spray cavity.
The second printing module 2 comprises a second printing spray cavity 21 and a resin supply unit 22 connected with the second printing spray cavity, the second resin supply unit provides resin for the second printing spray cavity, a second printing spray head 23 is arranged at the lower end of the second printing spray cavity, and the resin in the second printing spray cavity is extruded out through the second printing spray head.
The first printing nozzle extrudes thermosetting resin with gel state coated on the surface, and the second printing nozzle extrudes liquid thermosetting resin. And the liquid thermosetting resin extruded by the second printing nozzle is used for carrying out secondary infiltration on the fibers extruded by the first printing nozzle so as to ensure the full impregnation of the fibers.
After the second printing nozzle extrudes the liquid thermosetting resin to perform secondary infiltration on the fibers extruded by the first printing nozzle, the curing and heating module 3 arranged on one side of the first printing module cures the fibers, so that the in-situ rapid curing of the thermosetting resin is realized.
It should be noted that the first printing and spraying cavity comprises an upper end, a middle end and a lower end, and the upper end, the middle end and the lower end are sequentially connected and detachably connected, so that the first printing and spraying cavity can be conveniently detached, cleaned or maintained.
In some embodiments, a guide wheel 16 is provided between the wire feed unit and the first printing chamber to impart tensile stress to the fibers and to achieve subsequent fiber collection, centering and one-time impregnation.
The wire feeding unit is provided with a raw wire disc, is used for conveying fiber tows of the raw wire disc into the first printing and spraying cavity, is provided with a guide wheel in the conveying direction of the fiber tows, and moves into the first printing and spraying cavity after passing through the guide wheel under the action of the wire feeding unit in order to give tensile stress to the fibers and realize subsequent fiber aggregation, easy alignment and one-time impregnation.
In some embodiments, the impregnating resin unit 13 includes a first liquid supply pump and a first resin tank connected to the first liquid supply pump, the first resin tank is loaded with resin, and the resin in the first resin tank is transported to the first print spray chamber by the first liquid supply pump.
Similarly, the resin supply unit 22 includes a second liquid supply pump 221 and a second resin tank 222 connected to the second liquid supply pump, the second resin tank is loaded with resin, and the resin in the second resin tank is transported to the second print nozzle chamber by the second liquid supply pump.
In some embodiments, the first print module further comprises a mounting bracket 4, the first print chamber being disposed on the mounting bracket; the curing and heating module is arranged on the mounting bracket, so that the positions of the first printing module and the curing and heating module can be adjusted in a unified manner.
Wherein, the middle-end heating unit is a heating coil and provides uniform heating effect. The curing and heating module is a microwave directional heater, and the in-situ rapid curing of the thermosetting resin is realized by utilizing the property that microwave heating belongs to intramolecular heating.
In some embodiments, the pinch rollers 24 are arranged on two sides of the second printing nozzle, so that residual gas in resin is removed, the void ratio between layers is reduced, and the layering cross section is eliminated, so that the density of parts is improved, and the interlayer bonding force is improved.
The pressure exerted by the pressing wheel can adjust the gap between the pressing wheel and a printed part by adjusting the relative position of the first printing nozzle and the pressing wheel.
After the resin is rapidly heated and cured by the microwave directional heater, the printing is repeated for 3-5 layers, the microwave directional heater is closed, and the printing piece is compacted by the pressing wheel, so that residual gas in the resin is removed, the density of the part is improved, and the interlayer bonding force is improved.
The utility model provides a pair of continuous fibers reinforcing thermosetting combined material's 3D printing device adopts the structure of two printing shower nozzles, can guarantee fibrous abundant flooding, sets up the normal position fast curing that the curing heating module made thermosetting resin to and get rid of the residual gas in the resin through the pinch roller, reduce the void fraction between layer and layer, eliminate the layering cross section, in order to improve the density of part, improve cohesion between the layer, realize continuous fibers reinforcing thermosetting combined material's printing.
It is understood that different embodiments among the components in the above embodiments can be combined and implemented, and the embodiments are only for illustrating the implementation of specific structures and are not limited to the implementation of the embodiments.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (8)
1. A3D printing device for continuous fiber reinforced thermosetting composite materials comprises a printing driving mechanism, and is characterized in that a first printing module (1) and a second printing module (2) are mounted on the printing driving mechanism;
the first printing module (1) comprises a first printing spraying cavity (11), the upper end of the first printing spraying cavity (11) is connected with a wire feeding unit (12) and a resin soaking unit (13), the middle end of the first printing spraying cavity (11) is provided with a middle end heating unit (14), and the lower end of the first printing spraying cavity (11) is provided with a first printing nozzle (15);
the second printing module (2) comprises a second printing spray cavity (21) and a resin supply unit (22) connected with the second printing spray cavity (21), and a second printing spray head (23) is arranged at the lower end of the second printing spray cavity (21);
and a curing and heating module (3) is arranged on one side of the first printing module (1).
2. 3D printing device of continuous fiber reinforced thermosetting composite material according to claim 1, characterized in that a guide wheel (16) is arranged between the wire feed unit (12) and the first printing jet chamber (11).
3. 3D printing device of a continuous fiber reinforced thermosetting composite material according to claim 1, characterized in that the impregnating resin unit (13) comprises a first liquid feed pump and a first resin tank connected to the first liquid feed pump.
4. 3D printing device of continuous fiber reinforced thermosetting composite material according to claim 1, characterized in that the resin feed unit (22) comprises a second liquid feed pump (221) and a second resin tank (222) connected to the second liquid feed pump (221).
5. 3D printing device of continuous fiber reinforced thermosetting composite material according to claim 1, characterized in that the first printing module (1) further comprises a mounting bracket (4), the mounting bracket (4) being provided on the first printing jet chamber (11);
the curing and heating module (3) is arranged on the mounting bracket (4).
6. 3D printing device of continuous fiber reinforced thermosetting composite material according to claim 1, characterized in that the middle heating unit (14) is a heating coil.
7. 3D printing device of continuous fiber reinforced thermoset composite material according to claim 1, characterized in that the curing and heating module (3) is a microwave directional heater.
8. 3D printing device of continuous fiber reinforced thermosetting composite material according to claim 1, characterized in that pinch rollers (24) are provided on both sides of the second printing nozzle (23).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023342341.7U CN214294474U (en) | 2020-12-30 | 2020-12-30 | 3D printing device for continuous fiber reinforced thermosetting composite material |
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| CN202023342341.7U CN214294474U (en) | 2020-12-30 | 2020-12-30 | 3D printing device for continuous fiber reinforced thermosetting composite material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114343118A (en) * | 2022-01-05 | 2022-04-15 | 扬州冶春食品生产配送股份有限公司 | Method for synchronously 3D printing of easy-to-swallow stuffed steamed stuffed buns suitable for aerospace requirements |
| CN116080062A (en) * | 2023-01-09 | 2023-05-09 | 南京航空航天大学 | Microwave compaction cooperative interlayer reinforced additive manufacturing method and device |
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2020
- 2020-12-30 CN CN202023342341.7U patent/CN214294474U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114343118A (en) * | 2022-01-05 | 2022-04-15 | 扬州冶春食品生产配送股份有限公司 | Method for synchronously 3D printing of easy-to-swallow stuffed steamed stuffed buns suitable for aerospace requirements |
| CN116080062A (en) * | 2023-01-09 | 2023-05-09 | 南京航空航天大学 | Microwave compaction cooperative interlayer reinforced additive manufacturing method and device |
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