CN115816829A - Pre-impregnated fiber conveying and cutting function integrated device in 3D printing process and operation method - Google Patents
Pre-impregnated fiber conveying and cutting function integrated device in 3D printing process and operation method Download PDFInfo
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- CN115816829A CN115816829A CN202211334824.3A CN202211334824A CN115816829A CN 115816829 A CN115816829 A CN 115816829A CN 202211334824 A CN202211334824 A CN 202211334824A CN 115816829 A CN115816829 A CN 115816829A
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000010146 3D printing Methods 0.000 title claims abstract description 31
- 230000008569 process Effects 0.000 title claims abstract description 27
- 239000000835 fiber Substances 0.000 title claims abstract description 20
- 238000007639 printing Methods 0.000 claims abstract description 28
- 230000009471 action Effects 0.000 claims description 47
- 230000007246 mechanism Effects 0.000 claims description 14
- 238000010008 shearing Methods 0.000 claims description 11
- 230000009286 beneficial effect Effects 0.000 claims description 5
- 239000002131 composite material Substances 0.000 abstract description 7
- 239000003733 fiber-reinforced composite Substances 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 6
- 239000011159 matrix material Substances 0.000 abstract description 2
- 239000011347 resin Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
- 238000007598 dipping method Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000011199 continuous fiber reinforced thermoplastic Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
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Abstract
The invention relates to the field of 3D printing of continuous fiber reinforced composite materials, in particular to a pre-impregnated fiber conveying and cutting function integrated device in a 3D printing process. The method integrates the functions of wire cutting, wire stopping, wire feeding and the like into a unit module in the continuous fiber reinforced resin matrix composite material 3D printing device, realizes stable switching of different functions, effectively reduces the size of a printing head and lightens the weight of a system. The prepreg filament conveying/cutting function integrated device for the 3D printing process provided by the invention replaces three components for controlling the cutting, stopping and conveying of prepreg filaments in the traditional printing head by one functional component, so that the utilization rate of the internal space of the printing head is greatly improved, and the functional component provided by the invention does not adopt the traditional pneumatic element, so that the printing error caused by the actuation time of the pneumatic element is reduced, the printing precision is improved, and the high-speed printing is realized.
Description
Technical Field
The invention relates to the technical field of 3D printing of continuous fiber reinforced composites, in particular to a prepreg filament conveying and shearing function integrated device in a 3D printing process and an operation method.
Background
Continuous fiber reinforced thermoplastic Composites (CFRTP) are composites prepared with continuous fibers as the reinforcing material and a thermoplastic resin as the matrix. The continuous fiber reinforced thermoplastic composite material member has the advantages of light weight, high strength, excellent mechanical property and the like, is widely applied to various fields such as aerospace, national defense and military industry, transportation, energy and the like at present, and is continuously expanded to the civil field.
Continuous fiber reinforced composite material 3D printing is a novel additive manufacturing technology, and is an integral structure formed by melting and extruding continuous fiber prepreg filaments in a spray head and stacking the continuous fiber prepreg filaments layer by layer along with the movement of a 3D printing spray head. Compared with the traditional composite material forming process, the 3D printing process has the advantages of no need of a mold, low cost, integrated forming and the like, along with the development of the continuous fiber reinforced composite material 3D printing technology, the manufacturing cost of the continuous fiber reinforced composite material is reduced, and the application field of the composite material is further expanded. However, the cutting and re-feeding process of the continuous fiber prepreg filaments is involved in the 3D printing process of the continuous fibers, and the process has a great influence on the forming precision of the composite material product.
The preimpregnation silk in the present continuous fibers reinforcing combined material 3D printing apparatus is cut, is ended, send the mechanism and adopt the disconnect-type design mostly, and different functional module are mutually independent, and the existence of a plurality of functional module makes the first volume of printer increase, and beats the promotion that the big load on the head had seriously restricted printing speed. However, most of the prepreg filament shearing, stopping and feeding mechanisms in the conventional continuous fiber reinforced composite material 3D printing equipment are controlled by pneumatic elements, the pneumatic elements are long in actuating distance, large in contact number and high in failure rate, and meanwhile, the actuating time of the pneumatic elements can cause large forming errors, so that the forming precision of final parts is poor. In order to simplify the structure size of a continuous fiber printing head, an integrated device with functions of conveying/cutting pre-impregnated fibers in a 3D printing process is lacked at present, a component replaces a plurality of motors and a complex planetary transmission chain structure of a traditional pre-impregnated fiber cutting, stopping and conveying structure, the weight of a printing system is reduced, and the printing speed and the printing precision are improved.
Disclosure of Invention
In order to solve the problems, the invention discloses a pre-dipping silk conveying and cutting function integrated device in a 3D printing process, which uses a component to replace a plurality of motors and complex planetary transmission chain structures of the traditional pre-dipping silk cutting, stopping and conveying structure, reduces the use of pneumatic elements in the component, lightens the weight of a printing system, and improves the printing speed and precision.
A prepreg silk conveying and cutting function integrated device in a 3D printing process comprises an auxiliary wheel assembly and a multifunctional integrated action ring assembly, wherein the multifunctional integrated action ring assembly comprises a multifunctional integrated action ring, and a prepreg silk guide channel, a silk feeding mechanism, a silk stopping mechanism and a silk cutting mechanism are sequentially integrated on the multifunctional integrated action ring; the auxiliary wheel assembly comprises an auxiliary wheel and a steering engine, wherein an output shaft of the steering engine is connected with the auxiliary wheel; the auxiliary wheel assembly plays a role in assisting wire feeding, wire cutting and wire stopping. The wire feeding, cutting and stopping functions are realized through the rotation of the multifunctional integrated action ring and the matching of the auxiliary wheel.
The multifunctional integrated action ring is internally fixed with a second electromagnet, the outer circumferential surface of the multifunctional integrated action ring is sequentially provided with a cutter groove, a wire passing channel, a wire feeding wheel groove and a wire stopping wheel groove, a wire feeding wheel is arranged in the wire feeding wheel groove, a wire stopping wheel is arranged in the wire stopping wheel groove, and a first electromagnet and a third electromagnet are respectively fixed in the wire feeding wheel and the wire stopping wheel.
The invention further improves that: the positions of the wire feeding wheel and the wire stopping wheel in the wire feeding wheel groove and the wire stopping wheel groove are controlled by adjusting the magnitude and the direction of the current on the first electromagnet, the second electromagnet and the third electromagnet.
The invention further improves that: the angle range of the angle between the knife edge of the knife groove and the action circular cutting plane is 10-30 degrees, which is beneficial to smoothly finishing the cutting action of the prepreg silks.
The knife edge of the knife groove on the multifunctional integrated action ring is in a certain angle, so that the shearing action of the pre-impregnated filaments can be smoothly completed.
The function integration device adopts the electromagnet to replace the traditional pneumatic element to control the shearing, stopping and sending actions of the prepreg silks, reduces the printing error caused by the actuation time of the pneumatic element and improves the printing precision.
An operation method of a pre-impregnated filament conveying and cutting function integrated device in a 3D printing process comprises the following steps in actual operation:
step 1: in the 3D printing process, when a fiber shearing point is met, the multifunctional integrated action ring rotates to enable the cutter groove to be close to the auxiliary wheel, the steering engine is in a braking state at the moment, the auxiliary wheel is clamped and cannot rotate, and the outer edge of the cutter groove is matched with the auxiliary wheel to shear the prepreg filaments;
and 2, step: after the prepreg filaments are cut off, in order to prevent the prepreg filaments from being drawn back, the multifunctional integrated action ring rotates to enable the filament stopping wheel to be close to the auxiliary wheel, the steering engine is still in a braking state at the moment, the positions of the filament stopping wheel are controlled by adjusting the current magnitude and direction on the second electromagnet and the third electromagnet, the filament stopping wheel is tightly attached to the auxiliary wheel and clamps the prepreg filaments, and the prepreg filaments are in a filament stopping state;
and step 3: when the next printing position is reached, the multifunctional integrated action ring rotates to enable the wire feeding wheel to be close to the auxiliary wheel, the steering engine is in an operating state at the moment, the position of the wire feeding wheel is controlled by adjusting the current magnitude and direction on the first electromagnet and the second electromagnet, the wire feeding wheel is tightly attached to the auxiliary wheel and clamps the pre-impregnated wires, and the pre-impregnated wires are taken out by the cooperation of the wire feeding wheel and the auxiliary wheel;
and 4, step 4: when the prepreg filaments are sent out and then are continuously printed, the multifunctional integrated action ring rotates to enable the filament passing channel to be opposite to the auxiliary wheel, the steering engine is in a braking state at the moment, and the prepreg filaments are printed through passive filament feeding;
and 5: and repeating the steps 1-4.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, through the integrated design of the functional components such as the cutting, stopping and feeding of the prepreg filaments in the 3D printing process, the functions of cutting, stopping and feeding the prepreg filaments on one functional component are realized, the structure of the printing head equipment is greatly simplified, and the utilization rate of the internal space of the printing equipment is improved.
2. The invention uses a function integrated component to replace a plurality of motors and a complex planetary transmission chain structure of the traditional preimpregnation silk scissors, stop and feed structure, reduces more contact points among parts, and reduces the failure rate of printing equipment.
3. The invention adopts the electromagnet to replace the traditional pneumatic element to control the actions of wire cutting, wire stopping and wire feeding of the prepreg wire, has shorter actuation time, reduces the printing error caused by the actuation time of the pneumatic element and is beneficial to improving the printing precision and the printing speed.
Drawings
FIG. 1 is a schematic diagram of the integrated conveying/cutting function of prepreg filaments according to the present invention
In the figure: 1, prepreg filaments, 2 auxiliary wheel assemblies, 3 prepreg filament guide channels, 4 wire feeding mechanisms, 5 multifunctional integrated action ring assemblies, 6 wire stopping mechanisms and 7 wire shearing mechanisms;
FIG. 2 is a diagrammatic view of the prepreg filament multi-functional execution state of the present invention;
FIG. 3 is a schematic structural diagram of an integrated prepreg filament conveying/cutting device according to the present invention
In the figure: 8 auxiliary wheels, 9 steering engines, 10 wire feeding wheels, 11 first electromagnets, 12 multifunctional integrated action rings, 13 second electromagnets, 14 third electromagnets and 15 wire stopping wheels;
FIG. 4 is a schematic structural diagram of a multifunctional integrated action ring of the present invention
In the figure: 16 knife grooves, 17 wire passing channels, 18 wire feeding wheel grooves and 19 wire stopping wheel grooves.
Detailed Description
The present invention will be further illustrated with reference to the accompanying drawings and specific embodiments, which are to be understood as merely illustrative of the invention and not as limiting the scope of the invention. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
Referring to fig. 1, the prepreg filament conveying and cutting function integrated device in the 3D printing process is integrally composed of an auxiliary wheel assembly 2 and a multifunctional integrated action ring assembly 5, wherein a prepreg filament guide channel 3, a filament feeding mechanism 4, a filament stopping mechanism 6 and a filament cutting mechanism 7 are integrated on the multifunctional integrated action ring assembly 5, and functions of filament feeding, filament cutting, filament stopping and the like in the 3D printing process can be integrated into one module.
Referring to fig. 2, in the 3D printing process, the prepreg filament conveying and cutting function integrated device has four working states, namely a filament cutting state, a filament stopping state, a filament feeding state and a prepreg filament free state, and when a prepreg filament cutting point is encountered in the printing process, the four states are mutually switched to complete cutting and continuous printing of the prepreg filament.
Referring to fig. 3 and 4, the auxiliary wheel assembly 2 includes an auxiliary wheel 8 and a steering engine 9, and the auxiliary wheel assembly plays a role in assisting wire feeding, wire cutting and wire stopping.
The main body of the multifunctional integrated action ring assembly 4 is a multifunctional integrated action ring 12, and the rotation of the multifunctional integrated action ring 12 is matched with the auxiliary wheel 8 to realize the functions of wire feeding, wire cutting and wire stopping.
The second electromagnet 13 is fixed inside the multifunctional integrated action ring 12, the knife slot 16, the wire passing channel 17, the wire feeding wheel slot 18 and the wire stopping wheel slot 19 are arranged around the multifunctional integrated action ring 12, the wire feeding wheel 10 is arranged in the wire feeding wheel slot 18, the wire stopping wheel 15 is arranged in the wire stopping wheel slot 19, and the first electromagnet 11 and the third electromagnet 14 are respectively fixed inside the wire feeding wheel 10 and the wire stopping wheel 15. The positions of the wire feeding wheel 10 and the wire stopping wheel 15 in the wire feeding wheel groove 18 and the wire stopping wheel groove 19 are controlled by adjusting the magnitude and the direction of the current on the first electromagnet 11, the second electromagnet 13 and the third electromagnet 14.
The knife edge of the knife groove 16 on the multifunctional integrated action ring 12 is in a certain angle, which is beneficial to smoothly finishing the cutting action of the prepreg filaments.
The function integration device adopts the electromagnet to replace the traditional pneumatic element to control the shearing, stopping and sending actions of the prepreg silks, reduces the printing error caused by the actuation time of the pneumatic element and improves the printing precision.
When the prepreg filament conveying and shearing function integrated device is actually operated, the prepreg filament conveying and shearing function integrated device comprises the following steps:
step 1: in the 3D printing process, when a fiber shearing point is met, the multifunctional integrated action ring 12 rotates to enable the cutter groove 16 to be close to the auxiliary wheel 8, the steering engine 9 is in a braking state at the moment, the auxiliary wheel 8 is locked and cannot rotate, and the outer edge of the cutter groove 16 is matched with the auxiliary wheel 8 to shear the prepreg filaments 1;
step 2: after the prepreg yarn 1 is cut off, in order to prevent the prepreg yarn 1 from being drawn back, the multifunctional integrated action ring 12 rotates to enable the yarn stopping wheel 15 to be close to the auxiliary wheel 8, at the moment, the steering engine 9 is still in a braking state, the position of the yarn stopping wheel 15 is controlled by adjusting the current magnitude and direction on the second electromagnet 13 and the third electromagnet 14, the yarn stopping wheel is tightly attached to the auxiliary wheel 8 and clamps the prepreg yarn 1, and the prepreg yarn 1 is enabled to be in a yarn stopping state; the current is 48V direct current, and the current is 0.4-10A.
And step 3: when the next printing position is reached, the multifunctional integrated action ring 12 rotates to enable the wire feeding wheel 10 to be close to the auxiliary wheel 8, the steering engine 9 is in a running state at the moment, the position of the wire feeding wheel 10 is controlled by adjusting the current magnitude and direction on the first electromagnet 11 and the second electromagnet 13, and the current magnitude and direction on the electromagnets are respectively controlled by adopting a potentiometer and a relay in a circuit, so that the magnitude of the electromagnetic pole and the magnetic force are controlled;
the pre-dipping wire 1 is tightly attached to the auxiliary wheel 8 and clamped, and the pre-dipping wire 1 is taken out by the wire feeding wheel 10 and the auxiliary wheel 8 in a rotating mode;
and 4, step 4: when the prepreg silk 1 is sent out and then is continuously printed, the multifunctional integrated action ring 12 rotates to enable the silk passing channel 17 to be opposite to the auxiliary wheel 8, at the moment, the steering wheel 9 is in a braking state, and the prepreg silk 1 is printed through passive silk feeding;
and 5: repeating the steps 1-4.
The technical means disclosed in the invention scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features.
Claims (5)
1. A pre-impregnated fiber conveying and cutting function integrated device in a 3D printing process is characterized by comprising an auxiliary wheel assembly (2) and a multifunctional integrated action ring assembly (5), wherein the multifunctional integrated action ring assembly (5) comprises a multifunctional integrated action ring (12), and a pre-impregnated fiber guide channel (3), a wire feeding mechanism (4), a wire stopping mechanism (6) and a wire cutting mechanism (7) are sequentially integrated on the multifunctional integrated action ring (12); the auxiliary wheel assembly (2) comprises an auxiliary wheel (8) and a steering engine (9), wherein an output shaft of the steering engine (9) is connected with the auxiliary wheel (8); the multifunctional integrated action ring (12) is rotated to be matched with the auxiliary wheel (8) to realize the functions of wire feeding, wire cutting and wire stopping.
2. The pre-dip silk conveying and cutting function integrated device in the 3D printing process according to claim 1, wherein a second electromagnet (13) is fixed inside the multifunctional integrated action ring (12), the outer circumferential surface of the multifunctional integrated action ring (12) is sequentially provided with a knife slot (16), a silk passing channel (17), a wire feeding wheel slot (18) and a silk stopping wheel slot (19), a wire feeding wheel (10) is arranged in the wire feeding wheel slot (18), a silk stopping wheel (15) is arranged in the silk stopping wheel slot (19), and a first electromagnet (11) and a third electromagnet (14) are respectively fixed inside the wire feeding wheel (10) and the silk stopping wheel (15).
3. The integrated device for conveying and cutting prepreg filaments in the 3D printing process according to claim 2, wherein: the positions of the wire feeding wheel (10) and the wire stopping wheel (15) in the wire feeding wheel groove (18) and the wire stopping wheel groove (19) are controlled by adjusting the magnitude and the direction of the current on the first electromagnet (11), the second electromagnet (13) and the third electromagnet (14).
4. The integrated device for conveying and cutting prepreg filaments in the 3D printing process according to claim 2, wherein: the angle range of the angle between the knife edge of the knife groove (16) and the action circular cutting plane is 10-30 degrees, which is beneficial to smoothly finishing the cutting action of the pre-impregnated filaments.
5. The operation method of the pre-impregnated fiber conveying and cutting function integrated device in the 3D printing process is characterized in that: when in actual operation, the method comprises the following steps:
step 1: in the 3D printing process, when a fiber shearing point is met, the multifunctional integrated action ring (12) rotates to enable the cutter groove (16) to be close to the auxiliary wheel (8), the steering engine (9) is in a braking state at the moment, the auxiliary wheel (8) is locked and cannot rotate, and the outer edge of the cutter groove (16) is matched with the auxiliary wheel (8) to shear the pre-impregnated fiber (1);
step 2: after the prepreg silk (1) is cut off, in order to prevent the prepreg silk (1) from being drawn back, the multifunctional integrated action ring (12) rotates to enable the silk stopping wheel (15) to be close to the auxiliary wheel (8), at the moment, the steering engine (9) is still in a braking state, the current magnitude and direction on the second electromagnet (13) and the third electromagnet (14) are adjusted to control the position of the silk stopping wheel (15), so that the silk stopping wheel is tightly attached to the auxiliary wheel (8) and clamps the prepreg silk (1), and the prepreg silk (1) is in a silk stopping state;
and step 3: when the next printing position is reached, the multifunctional integrated action ring (12) rotates to enable the wire feeding wheel (10) to be close to the auxiliary wheel (8), the steering engine (9) is in a running state at the moment, the current magnitude and direction on the first electromagnet (11) and the second electromagnet (13) are adjusted to control the position of the wire feeding wheel (10), the wire feeding wheel is tightly attached to the auxiliary wheel (8) and clamps the pre-impregnated wire (1), and the pre-impregnated wire (1) is taken out by the cooperation of the wire feeding wheel (10) and the auxiliary wheel (8);
and 4, step 4: when the prepreg silk (1) is sent out and then is continuously printed, the multifunctional integrated action ring (12) rotates to enable the silk passing channel (17) to be opposite to the auxiliary wheel (8), the steering wheel (9) is in a braking state at the moment, and the prepreg silk (1) is printed through passive silk feeding;
and 5: and (5) repeating the steps 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211334824.3A CN115816829B (en) | 2022-10-28 | 2022-10-28 | 3D printing prepreg wire conveying and cutting function integrated device and operation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211334824.3A CN115816829B (en) | 2022-10-28 | 2022-10-28 | 3D printing prepreg wire conveying and cutting function integrated device and operation method |
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| Publication Number | Publication Date |
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| CN115816829A true CN115816829A (en) | 2023-03-21 |
| CN115816829B CN115816829B (en) | 2024-02-23 |
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| CN106624423A (en) * | 2016-12-14 | 2017-05-10 | 北京时代民芯科技有限公司 | Device and method for manufacturing enhanced type welding columns |
| KR102100353B1 (en) * | 2019-10-08 | 2020-04-13 | 주식회사 에스앤티 | 3D printer having printing head device |
| US20200282659A1 (en) * | 2017-08-10 | 2020-09-10 | Shanghai Mi Fang Electronics Ltd. | 3d printer |
| US20210001402A1 (en) * | 2019-07-03 | 2021-01-07 | Directed Metal 3D, S.L. | Multi-mode laser device for metal manufacturing applications |
| KR20210023938A (en) * | 2021-02-23 | 2021-03-04 | 정하익 | Tube, pipe, hollow bodies, wave bodies, magnet, equipment, material, manufacture, construction, cleaning, work |
| CN114953438A (en) * | 2022-05-13 | 2022-08-30 | 南京航空航天大学 | Nozzle-changeable printing head for continuous fiber printing and printing method |
-
2022
- 2022-10-28 CN CN202211334824.3A patent/CN115816829B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106624423A (en) * | 2016-12-14 | 2017-05-10 | 北京时代民芯科技有限公司 | Device and method for manufacturing enhanced type welding columns |
| US20200282659A1 (en) * | 2017-08-10 | 2020-09-10 | Shanghai Mi Fang Electronics Ltd. | 3d printer |
| US20210001402A1 (en) * | 2019-07-03 | 2021-01-07 | Directed Metal 3D, S.L. | Multi-mode laser device for metal manufacturing applications |
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| KR102100353B1 (en) * | 2019-10-08 | 2020-04-13 | 주식회사 에스앤티 | 3D printer having printing head device |
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