CN112895440A - Wire-cutting type double-nozzle carbon fiber 3D printing equipment and using method thereof - Google Patents

Wire-cutting type double-nozzle carbon fiber 3D printing equipment and using method thereof Download PDF

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Publication number
CN112895440A
CN112895440A CN202011566945.1A CN202011566945A CN112895440A CN 112895440 A CN112895440 A CN 112895440A CN 202011566945 A CN202011566945 A CN 202011566945A CN 112895440 A CN112895440 A CN 112895440A
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China
Prior art keywords
printing
assembly
wire
carbon fiber
shell
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Granted
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CN202011566945.1A
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Chinese (zh)
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CN112895440B (en
Inventor
李思奇
张秋菊
宁萌
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Jiangsu Jicui Composite Material Equipment Research Institute Co ltd
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Jiangsu Jicui Composite Material Equipment Research Institute Co ltd
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Publication of CN112895440A publication Critical patent/CN112895440A/en
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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
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • 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
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B29C64/205—Means for applying layers
    • B29C64/209—Heads; Nozzles
    • 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
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B29C64/227—Driving means
    • B29C64/232—Driving means for motion along the axis orthogonal to the plane of a layer
    • 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
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/30—Auxiliary operations or equipment
    • 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
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/30—Auxiliary operations or equipment
    • B29C64/307—Handling of material to be used in additive manufacturing
    • B29C64/321—Feeding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y40/00—Auxiliary operations or equipment, e.g. for material handling

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Optics & Photonics (AREA)

Abstract

The invention relates to a wire-cutting type double-nozzle carbon fiber 3D printing device and a using method thereof, wherein the wire-cutting type double-nozzle carbon fiber 3D printing device comprises an upper beam assembly and a lower beam assembly which are arranged at intervals up and down and are both in a frame structure, and four corners of the upper beam assembly and the lower beam assembly are both provided with stand columns together to form a rack; the upper beam assembly is provided with a Y-direction moving assembly, the Y-direction moving assembly is provided with an X-direction moving assembly moving along the Y direction of the Y-direction moving assembly, the X-direction moving assembly is provided with a spray head assembly moving along the X direction of the X-direction moving assembly, printing table tops are arranged under the spray head assembly at intervals, and the printing table tops are driven by the lifting driving assembly to lift; two printing heads facing downwards are arranged in the nozzle assembly in parallel; the printing system also comprises two groups of wire feeding mechanisms which respectively feed wires for the two printing heads; the double-nozzle carbon fiber 3D printing equipment disclosed by the invention is high in printing speed, flexible and high in printing precision, has the functions of wire cutting and compacting, is greatly convenient for 3D printing, and is good in practicability.

Description

Wire-cutting type double-nozzle carbon fiber 3D printing equipment and using method thereof
Technical Field
The invention relates to the technical field of 3D printing equipment, in particular to a wire-cutting type double-nozzle carbon fiber 3D printing equipment and a using method thereof.
Background
3D printing is a rapid prototyping technique that builds models from a layer-by-layer printing of bondable materials. The mold manufacturing, industrial design industry for building models is now evolving into product manufacturing, resulting in "direct digital manufacturing", so 3D printing is also known as: rapid prototyping, additive manufacturing, laminate manufacturing, and the like.
The existing carbon fiber composite material has complex manufacturing and forming process and long production period, most of the existing carbon fiber composite materials need moulds for manufacturing, the cost is higher, the procedures of cementing or assembling and the like are needed, the complexity of a finished piece is limited, and the problems greatly limit the mass application of the composite material structure in the engineering. The huge market demand calls for advanced composite material manufacturing technology, and high-performance and high-efficiency carbon fiber composite material processing technology and intelligent equipment are urgent needs of industry development! The composite material 3D printing technology is a new composite material intelligent additive manufacturing technology, China still starts at the aspect of continuous carbon fiber reinforced thermoplastic composite material 3D printing technology and equipment, and compared with composite material 3D printing equipment commercialized abroad, the composite material 3D printer manufactured in China at present is poor in printing quality, carbon fiber arrangement and surface quality are different from expected ones, and certain differences exist between printing precision and printing speed and abroad, so that research and breakthrough of a new generation of composite material intelligent additive manufacturing key technology are made, and development and application of novel composite material 3D printing equipment have important strategic significance for improving the core competitiveness of the high-strength light composite material manufacturing industry in China.
Disclosure of Invention
The applicant aims at the defects in the prior art and provides the wire-cutting type double-nozzle carbon fiber 3D printing equipment with a reasonable structure and the using method thereof, so that the carbon fiber can be printed quickly, accurately and high-quality 3D, the wire-cutting and compacting functions are achieved, the printing flexibility and convenience are greatly improved, and the practicability is good.
The technical scheme adopted by the invention is as follows:
a wire-cutting type double-nozzle carbon fiber 3D printing device comprises an upper beam assembly and a lower beam assembly which are arranged at intervals up and down and are both in a frame structure, wherein stand columns are installed at four corners of the upper beam assembly and the lower beam assembly together to form a rack; the upper beam assembly is provided with a Y-direction moving assembly, the Y-direction moving assembly is provided with an X-direction moving assembly moving along the Y direction of the Y-direction moving assembly, the X-direction moving assembly is provided with a spray head assembly moving along the X direction of the X-direction moving assembly, printing table tops are arranged under the spray head assembly at intervals, and the printing table tops are driven by the lifting driving assembly to lift; two printing heads facing downwards are arranged in the spray head assembly in parallel; the printer also comprises two groups of wire feeding mechanisms which respectively feed wires for the two printing heads.
As a further improvement of the above technical solution:
the structure of the spray head assembly is as follows: the device comprises a shell arranged on an X-direction moving assembly, wherein a joint penetrates through the upper wall surface of the shell from top to bottom, longitudinal wire tubes are arranged below the joint at intervals, the bottom ends of the wire tubes penetrate through the lower wall surface of the shell downwards, a printing head is arranged at the bottom end of each wire tube in a penetrating manner, and a heating assembly is further arranged at the lower part of each wire tube in the shell; the silk sent out from the silk feeding mechanism enters the silk tube downwards after passing through the joint, and the silk is downwards sprayed out through the printing head after being melted at the lower part of the silk tube; and ball wheel assemblies are arranged on the lower part of the outer wall surface of the shell along the circumferential direction.
The outer side wall of the shell is fixedly provided with a steering engine, the output end of the steering engine faces downwards, an L-shaped blade is fixedly arranged at the end part of the steering engine, the L-shaped blade extends into the shell, and the cutting edge on the inner side of the L-shaped blade faces the interval between the joint and the wire tube.
The heating component is arranged in the shell, the wire tube above the heating component is sleeved with the radiator, the outer side wall of the shell is fixedly provided with the fan, and the fan blows air into the shell.
The structure of the ball wheel assembly is as follows: the device comprises a bracket fixedly arranged on the outer wall surface of a shell, pin shafts are movably arranged through the bracket from top to bottom at intervals, ball wheels are arranged at the bottom ends of the pin shafts, and a return spring is sleeved on the pin shaft between the ball wheels and the outer bottom surface of the bracket; the lowermost face of the ball wheel projects downwardly from the lowermost face of the print head.
The structure of the wire feeding mechanism is as follows: the wire feeding motor is fixedly arranged on one side surface of the motor base, a support is fixedly arranged on the other opposite side surface of the motor base, the output end of the wire feeding motor sequentially and horizontally penetrates through the motor base and the support, and a large rotating wheel is fixedly arranged at the end head of the output end of the wire feeding motor; the side surface of the support is rotatably provided with a rocking block, a small rotating wheel is fixedly arranged on the rocking block, a compression spring is further arranged between the rocking block and the support, and the circumferential surface of the small rotating wheel is tightly attached to the circumferential surface of the large rotating wheel under the action of the compression spring.
The upper end of the rocking block is rotatably installed with the support through a rotating shaft, a compression spring is installed between one side of the lower end of the rocking block and the support, and a small rotating wheel is fixedly installed on the other side of the lower end of the rocking block; the axial direction of the small rotating wheel is parallel to the axial direction of the large rotating wheel, and a groove for embedding the wire is formed in the circumferential surface of the small rotating wheel along the circumferential direction;
the rocking block is fixedly arranged on the side surface of the motor base, the rocking block, the compression spring, the small rotating wheel and the large rotating wheel are contained in the shell, and a wire passing hole which penetrates through the shell up and down is formed in the shell.
Side plates are fixedly arranged on two opposite outer side surfaces of the upper beam assembly respectively;
the structure of the Y-direction moving assembly is as follows: the Y-direction motor is fixedly arranged on one side plate, and the output end of the Y-direction motor penetrates through the side plate and is connected with a driving shaft through a small belt mechanism; the small belt mechanisms are positioned outside the side plates, two end parts of the driving shaft are respectively and rotatably installed on the two side plates, the driven shaft parallel to the driving shaft is further rotatably installed between the two side plates, and the driving shaft and the driven shaft are respectively positioned inside two upper cross beams which are perpendicular to the side plates in the upper beam assembly; the two ends of the driving shaft and the two ends of the driven shaft are respectively provided with a large belt mechanism, the large belt mechanisms are positioned on the inner sides of the side plates, and Y-direction guide rods are further arranged on the inner sides of the side plates below the large belt mechanisms; y-direction sliding blocks are fixedly arranged on belts of the single-group large belt mechanism, an X-direction moving assembly is arranged between the two Y-direction sliding blocks, and the single Y-direction sliding block is penetrated through by the corresponding Y-direction guide rod;
the structure of the X-direction moving assembly is as follows: the X-direction motor is fixedly arranged on one Y-direction sliding block, the output end of the X-direction motor is arranged in the Y direction, the end part of the output end of the X-direction motor is provided with an X-direction belt mechanism in a connecting mode, one belt wheel of the X-direction belt mechanism is fixedly arranged on the output end of the X-direction motor, and the other belt wheel of the X-direction belt mechanism is rotatably arranged on the other Y-direction sliding block; x-direction guide rods are symmetrically arranged between the two Y-direction sliding blocks above and below the X-direction belt mechanism; an X-direction sliding block is fixedly arranged on a belt of the X-direction belt mechanism, a spray head assembly is fixedly arranged on the front side face of the X-direction sliding block, and an X-direction guide rod penetrates through the X-direction sliding block.
The structure of the lifting driving component is as follows: the lifting mechanism comprises a lifting motor fixedly arranged below a lower beam assembly, wherein a supporting plate is fixedly arranged on the top surface of the lower beam assembly above the lifting motor, the output end of the lifting motor faces upwards, a vertically arranged screw rod is arranged at the output end of the lifting motor, two ends of the screw rod are respectively rotatably arranged with the supporting plate and a rack, and a lifting guide rod is also arranged between the supporting plate and the rack on two sides of the screw rod; the screw rod is provided with a lifting plate in a matching way through a screw pair, and a lifting guide rod penetrates through the lifting plate; the lifting plate is of a U-shaped structure with an opening facing forwards, and a printing table top is fixedly arranged on the lifting plate.
The use method of the wire-cutting type double-nozzle carbon fiber 3D printing equipment comprises the following steps:
respectively penetrating the matrix and the precursor of the carbon fiber into the corresponding printing heads after penetrating through the wire feeding mechanism;
the lifting driving component works to drive the printing table-board to vertically move, so that the printing table-board and the printing head are spaced by a preset height;
the X-direction moving assembly and the Y-direction moving assembly work to drive the spray head assembly to move to a preset position of the printing table board;
the wire feeding mechanism works, the spray head assembly works, the precursor is conveyed into the spray head assembly under the action of the wire feeding mechanism, and the precursor is melted in the spray head assembly and is downwards output and printed on the printing table board through the corresponding printing head;
meanwhile, the X-direction moving assembly and the Y-direction moving assembly work to drive the spray head assembly to move in a horizontal plane relative to the printing table top, so that a preset path is printed on the printing table top;
the lifting driving component works to drive the printing table top to move downwards by one layer height; the wire feeding mechanism, the spray head assembly, the X-direction moving assembly and the Y-direction moving assembly continuously work to print;
when printing is carried out, the matrix material and the carbon fiber material are sequentially printed at intervals and compacted; printing a layer of base material, compacting by a ball wheel assembly on a spray head assembly, printing a layer of carbon fiber material on the printed base material, and compacting by the ball wheel assembly;
after each printing, the carbon fiber material cuts the precursor from above the printing head and stops feeding.
The invention has the following beneficial effects:
the invention has compact and reasonable structure and convenient operation, realizes the three-way relative motion between the spray head component and the printing table board through the X-direction moving component, the Y-direction moving component and the lifting driving component, and assists in improving the printing precision and quality; the arrangement of the double printing heads on the spray head assembly is matched with the switching use of the double printing heads, so that the printing speed and the use convenience are effectively improved; moreover, a wire cutting function is achieved above a printing head in the nozzle assembly, and a ball wheel assembly for compaction is arranged on the bottom surface of the nozzle assembly, so that the precision and the quality of carbon fiber 3D printing are further improved by great assistance, and the practicability is improved;
the invention also has the following advantages:
when the carbon fiber stops printing, the steering engine works to drive the L-shaped blade to swing, and the carbon fiber precursor is cut off from the space between the joint and the fiber tube, so that the printing of the carbon fiber material is stopped; the fan arranged on the side face of the shell continuously blows away hot air in the nozzle assembly, and a heat exhaust hole is formed in the side face of the shell opposite to the fan, so that precursor filaments are prevented from being melted in advance, and normal feeding of the precursor filaments at the heating assembly above the printing head is effectively guaranteed; the filament tube in the spray head assembly provides guide for the conveying of the precursor; the heating assembly heats and melts the protofilament, so that the protofilament can be smoothly printed and output from a printing head below; the nozzle assembly comprises two printing heads which can be used for printing the base material and the carbon fiber respectively, and can also switch the printing material at any time according to the printing requirement, so that the use is convenient and flexible;
after printing, aim at the ball wheel subassembly and just print in the material of printing the mesa to drive the ball wheel subassembly according to printing the route and remove, thereby realize the compaction after the material is printed, make the material atress of printing compacter, promoted the promotion of printing quality.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic structural view of a showerhead assembly of the present invention.
Fig. 3 is an exploded view of fig. 2.
FIG. 4 is a schematic structural view of a wire feeder according to the present invention.
FIG. 5 is a schematic view of the mounting of the small and large wheels of the wire feeder of the present invention.
Fig. 6 is a schematic view showing the installation of the Y-direction moving assembly and the X-direction moving assembly in the present invention.
Fig. 7 is a schematic view of fig. 6 from another perspective.
Fig. 8 is a schematic structural diagram of the lifting driving assembly of the present invention.
Wherein: 1. a side plate; 2. a showerhead assembly; 3. a Y-direction moving component; 4. an X-direction moving assembly; 5. printing the table top; 6. a lifting plate; 7. a wire feeder; 8. a lift drive assembly;
11. an upper beam assembly; 12. a lower beam assembly; 13. a column;
21. a housing; 22. a print head; 23. a heating assembly; 24. a heat sink; 25. a wire tube; 26. a joint; 27. a fan; 28. a steering engine; 281. an L-shaped blade; 29. a ball wheel assembly; 291. a pin shaft; 292. a support; 293. a return spring; 294. a ball wheel;
31. a Y-direction motor; 32. a small belt mechanism; 33. a drive shaft; 34. a large belt mechanism; 35. a Y-direction sliding block; 36. a Y-direction guide rod; 37. a driven shaft;
41. an X-direction motor; 42. an X-direction belt mechanism; 43. an X-direction guide rod; 44. an X-direction sliding block;
71. a wire feeding motor; 72. a motor base; 73. a support; 74. shaking the block; 75. a compression spring; 76. a housing; 77. a small rotating wheel; 78. a large rotating wheel;
81. a lifting motor; 82. a screw rod; 83. a lifting guide rod; 84. and a support plate.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1, the wire-cutting type dual-nozzle carbon fiber 3D printing apparatus of the embodiment includes an upper beam assembly 11 and a lower beam assembly 12 which are arranged at an interval from top to bottom and are both frame-shaped structures, and four corners of the upper beam assembly 11 and the lower beam assembly 12 are both provided with an upright column 13 to form a rack; the upper beam assembly 11 is provided with a Y-direction moving assembly 3, the Y-direction moving assembly 3 is provided with an X-direction moving assembly 4 moving along the Y direction, the X-direction moving assembly 4 is provided with a spray head assembly 2 moving along the X direction, printing table tops 5 are arranged under the spray head assembly 2 at intervals, and the printing table tops 5 are driven by a lifting driving assembly 8 to lift; two printing heads 22 facing downwards are arranged in the nozzle assembly 2 in parallel, the two printing heads 22 can be used for printing base materials and carbon fibers respectively, printing materials can be switched at any time according to printing requirements, and the use is convenient and flexible; two sets of wire feeders 7 are also included for feeding the two print heads 22 separately.
Three-way relative motion between the spray head component 2 and the printing table top 5 is realized through the X-direction moving component 4, the Y-direction moving component 3 and the lifting driving component 8, and the printing precision and the printing quality are improved in an assisting manner; the arrangement of the double printing heads 22 on the nozzle assembly 2 is matched with the switching use of the double printing heads 22, so that the printing speed and the use convenience are effectively improved; and, the top of the printing head 22 in the nozzle assembly 2 has the function of cutting thread, and the bottom of the nozzle assembly 2 is provided with a ball wheel assembly 29 for compaction.
As shown in fig. 2 and 3, the head assembly 2 has a structure in which: the device comprises a shell 21 arranged on an X-direction moving assembly 4, a joint 26 is arranged by penetrating through the upper wall surface of the shell 21 from top to bottom, longitudinal filament tubes 25 are arranged below the joint 26 at intervals, the bottom ends of the filament tubes 25 penetrate through the lower wall surface of the shell 21 downwards, a printing head 22 is arranged at the bottom end of each filament tube 25 in a penetrating manner, the filament tubes 25 provide guidance for conveying precursor filaments, a heating assembly 23 is further arranged at the lower part of each filament tube 25 positioned in the shell 21, the precursor filaments are heated and melted by the heating assembly 23, so that the precursor filaments can be printed and output by the printing head 22 below smoothly, and a temperature sensor for monitoring temperature change at any time is; the wire sent from the wire feeder 7 passes through the joint 26 and then enters the wire tube 25, and the wire is melted at the lower part of the wire tube 25 and then is ejected downwards through the printing head 22; ball wheel assemblies 29 are mounted to the lower portion of the outer wall surface of the housing 21 along the circumferential direction.
The outer side wall of the shell 21 is fixedly provided with a steering engine 28, the output end of the steering engine 28 faces downwards, the end part of the steering engine 28 is fixedly provided with an L-shaped blade 281, the L-shaped blade 281 extends into the shell 21, the cutting edge on the inner side of the L-shaped blade 281 faces the interval between the joint 26 and the filament tube 25, and the steering engine 28 rotates at a certain angle to drive the L-shaped blade 281 to swing at a certain angle, so that the protofilament is cut off at the interval between the joint 26 and the filament tube 25, and printing of materials is stopped.
The radiator 24 is sleeved on the filament tube 25 positioned above the heating component 23 in the shell 21, the fan 27 is fixedly arranged on the outer side wall of the shell 21, the fan 27 blows air to the inside of the shell 21, a heat exhaust hole is formed in the side face of the shell 21 opposite to the fan 27, the fan 27 works to blow away hot air in the nozzle component 2, so that precursor filaments are prevented from being melted in advance, and normal feeding of precursor filaments at the position of the heating component 23 above the printing head 22 is effectively guaranteed.
The structure of the ball wheel assembly 29 is: the device comprises a support 292 fixedly arranged on the outer wall surface of a shell 21, pin shafts 291 are movably arranged through the support 292 from top to bottom at intervals, a ball wheel 294 is arranged at the bottom end of each pin shaft 291, a return spring 293 is sleeved on each pin shaft 291 between each ball wheel 294 and the outer bottom surface of the support 292, and the return spring 293 enables force applied when the ball wheels 294 compact materials to be flexible force, so that the compaction effect is guaranteed, and meanwhile, the service life of a ball wheel assembly 29 is prolonged; the lowermost face of the ball wheel 294 projects downwardly from the lowermost face of the print head 22.
After printing, aim at ball wheel subassembly 29 and just print the material in printing mesa 5 to drive ball wheel subassembly 29 according to printing the route and remove, thereby realize the compaction after the material is printed, make the material atress of printing compacter, promoted the promotion of printing quality.
As shown in fig. 4, the wire feeder 7 has the following structure: the wire feeding device comprises a motor base 72 fixedly mounted on a vertical column 13, wherein a wire feeding motor 71 is fixedly mounted on one side surface of the motor base 72, a support 73 is fixedly mounted on the other opposite side surface of the motor base 72, the output end of the wire feeding motor 71 sequentially and horizontally penetrates through the motor base 72 and the support 73, and a large rotating wheel 78 is fixedly mounted at the end of the output end of the wire feeding motor 71; a rocking block 74 is rotatably arranged on the side surface of the support 73, a small rotating wheel 77 is fixedly arranged on the rocking block 74, a compression spring 75 is further arranged between the rocking block 74 and the support 73, and the circumferential surface of the small rotating wheel 77 is tightly attached to the circumferential surface of the large rotating wheel 78 under the action of the compression spring 75; the wire feeding motor 71 works to drive the large rotating wheel 78 to rotate, the large rotating wheel 78 drives the small rotating wheel 77 to rotate through friction force, and the large rotating wheel 78 and the small rotating wheel 77 synchronously rotate to realize protofilament conveying between the two.
As shown in fig. 5, the upper end of the rocker 74 is rotatably mounted on the support 73 through a rotating shaft, a compression spring 75 is mounted between one side of the lower end of the rocker 74 and the support 73, and a small rotating wheel 77 is fixedly mounted on the other side of the lower end of the rocker 74; the axial direction of the small rotating wheel 77 is parallel to the axial direction of the large rotating wheel 78, and a groove for embedding the wires is formed on the circumferential surface of the small rotating wheel 77 along the circumferential direction;
the rocking block mechanism further comprises a shell 76 fixedly mounted on the side face of the motor base 72, the rocking block 74, the compression spring 75, the small rotating wheel 77 and the large rotating wheel 78 are contained in the shell 76, and a wire passing hole penetrating through the shell 76 is formed in the shell 76.
Two opposite outer side surfaces of the upper beam assembly 11 are respectively and fixedly provided with a side plate 1;
as shown in fig. 6 and 7, the Y-direction moving assembly 3 has a structure in which: the Y-direction motor 31 is fixedly installed on one side plate 1, and the output end of the Y-direction motor 31 penetrates through the side plate 1 and is connected with a driving shaft 33 through a small belt mechanism 32; the small belt mechanism 32 is positioned at the outer side of the side plates 1, two end parts of the driving shaft 33 are respectively and rotatably installed on the two side plates 1, the driven shaft 37 parallel to the driving shaft 33 is also rotatably installed between the two side plates 1, and the driving shaft 33 and the driven shaft 37 are respectively positioned at the inner sides of two upper cross beams which are vertical to the side plates 1 in the upper beam assembly 11; large belt mechanisms 34 are respectively arranged between two end parts of the driving shaft 33 and two end parts of the driven shaft 37, the large belt mechanisms 34 are positioned on the inner side of the side plate 1, and a Y-shaped guide rod 36 is also arranged on the inner side surface of the side plate 1 below the large belt mechanisms 34; y-direction sliding blocks 35 are fixedly arranged on belts of the single group of large belt mechanisms 34, an X-direction moving assembly 4 is jointly arranged between the two Y-direction sliding blocks 35, and the single Y-direction sliding block 35 is penetrated through by the corresponding Y-direction guide rod 36;
the structure of the X-direction moving assembly 4 is: the X-direction motor 41 is fixedly arranged on one Y-direction sliding block 35, the output end of the X-direction motor 41 is arranged in the Y direction, the end part of the output end of the X-direction motor 41 is provided with an X-direction belt mechanism 42 in a connecting mode, one belt wheel of the X-direction belt mechanism 42 is fixedly arranged on the output end of the X-direction motor 41, and the other belt wheel of the X-direction belt mechanism 42 is rotatably arranged on the other Y-direction sliding block 35; x-direction guide rods 43 are symmetrically arranged between the two Y-direction sliding blocks 35 which are positioned above and below the X-direction belt mechanism 42; an X-direction sliding block 44 is fixedly arranged on a belt of the X-direction belt mechanism 42, the spray head assembly 2 is fixedly arranged on the front side surface of the X-direction sliding block 44, and an X-direction guide rod 43 penetrates through the X-direction sliding block 44.
As shown in fig. 8, the lifting drive assembly 8 has the following structure: the lifting mechanism comprises a lifting motor 81 fixedly arranged below a lower beam assembly 12, a supporting plate 84 is fixedly arranged on the top surface of the lower beam assembly 12 above the lifting motor 81, the output end of the lifting motor 81 faces upwards, a vertically arranged screw rod 82 is arranged at the output end of the lifting motor 81, two ends of the screw rod 82 are respectively rotatably arranged with the supporting plate 84 and a rack, and a lifting guide rod 83 is arranged between the supporting plate 84 and the rack on two sides of the screw rod 82; the screw rod 82 is provided with a lifting plate 6 through a screw pair in a matching way, and a lifting guide rod 83 penetrates through the lifting plate 6; the lifting plate 6 is of a U-shaped structure with a forward opening, and the printing table top 5 is fixedly arranged on the lifting plate 6.
The use method of the wire-cutting type double-nozzle carbon fiber 3D printing equipment comprises the following steps:
the first step is as follows: respectively leading the matrix and the precursor of the carbon fiber to pass through the wire feeding mechanism 7 and then into the corresponding printing head 22;
the protofilament in the wire feeding mechanism 7 passes through the groove at the position where the small rotating wheel 77 and the large rotating wheel 78 are attached; the precursor threads through a connector 26 at the top of the spray head assembly 2 and through a filament pipe 25 down to above the print head 22;
the second step is that: the lifting driving component 8 works to drive the printing table top 5 to vertically move, so that the printing table top 5 and the printing head 22 are spaced by a preset height;
the lifting motor 81 works to drive the screw rod 82 to rotate, and the lifting plate 6 assembled with the screw rod 82 through a nut screw pair rises or falls along with the screw rod, so that the printing table top 5 rises or falls;
the third step: the X-direction moving assembly 4 and the Y-direction moving assembly 3 work to drive the spray head assembly 2 to move to a preset position of the printing table top 5;
the Y-direction motor 31 works, the driving shaft 33 is driven to rotate through the transmission of the small belt mechanism 32, the driving shaft 33 drives the driven shaft 37 to rotate through the large belt mechanisms 34 at the two ends, the X-direction moving assembly 4 is driven by the transmission of the large belt mechanisms 34 to move in the Y direction by taking the Y-direction guide rod 36 as a guide, so that the spray head assembly 2 moves in the Y direction along with the X-direction moving assembly 4, and the spray head assembly 2 moves in the Y direction relative to the printing table board 5;
the X-direction motor 41 works to drive the X-direction belt mechanism 42 to transmit, so that the spray head assembly 2 is driven to move in the X direction in a guiding manner of the X-direction guide rod 43, and the spray head assembly 2 moves in the X direction relative to the printing table top 5;
the fourth step: the wire feeding mechanism 7 works, the spray head assembly 2 works, the protofilament is conveyed into the spray head assembly 2 under the action of the wire feeding mechanism 7, and the protofilament is melted in the spray head assembly 2 and is downwards output and printed on the printing table top 5 through the corresponding printing head 22;
the wire feeding motor 71 works to drive the large rotating wheel 78 to rotate, and the large rotating wheel 78 drives the small rotating wheel 77 tightly attached to the large rotating wheel to rotate through friction force, so that the raw material is conveyed;
the heating assembly 23 operates to melt the filaments passing through the filament tube 25 at the corresponding position and outputs them from the lower print head 22;
the fifth step: meanwhile, the X-direction moving component 4 and the Y-direction moving component 3 work to drive the spray head component 2 to move in a horizontal plane relative to the printing table top 5, so that a preset path is printed on the printing table top 5;
and a sixth step: the lifting driving component 8 works to drive the printing table-board 5 to move downwards by one layer height; the wire feeding mechanism 7, the spray head assembly 2, the X-direction moving assembly 4 and the Y-direction moving assembly 3 continue to work for printing;
the seventh step: when printing is carried out, the matrix material and the carbon fiber material are sequentially printed at intervals and compacted; firstly, printing a layer of base material, compacting by a ball wheel assembly 29 on the spray head assembly 2, then printing a layer of carbon fiber material on the printed base material, and compacting by the ball wheel assembly 29;
aligning the ball wheel 294 of the ball wheel assembly 29 with the material just printed on the printing table 5, and driving the ball wheel assembly 29 to move according to the printing path, thereby realizing compaction of the printed material;
the carbon fiber material, after each printing, shears the precursor from above the print head 22 while stopping the wire feed;
the steering engine 28 operates to drive the L-shaped blade 281 to swing, and cuts the carbon fiber precursor from the gap between the joint 26 and the yarn tube 25, thereby stopping printing of the carbon fiber material.
The invention realizes the rapid, high-precision and high-quality 3D printing of the carbon fiber, and has the functions of wire cutting and compaction, high printing flexibility and use convenience and good practicability.
The above description is intended to be illustrative and not restrictive, and the scope of the invention is defined by the appended claims, which may be modified in any manner within the scope of the invention.

Claims (10)

1. The utility model provides a cut two shower nozzle carbon fiber 3D printing apparatus of silk type which characterized in that: the device comprises an upper beam assembly (11) and a lower beam assembly (12) which are arranged at intervals up and down and are in frame structures, wherein stand columns (13) are mounted at four corners of the upper beam assembly (11) and the lower beam assembly (12) together to form a rack; the upper beam assembly (11) is provided with a Y-direction moving assembly (3), the Y-direction moving assembly (3) is provided with an X-direction moving assembly (4) moving along the Y direction, the X-direction moving assembly (4) is provided with a spray head assembly (2) moving along the X direction, printing table tops (5) are arranged under the spray head assembly (2) at intervals, and the printing table tops (5) are driven by a lifting driving assembly (8) to lift; two printing heads (22) facing downwards are arranged in the spray head assembly (2) in parallel; and two groups of wire feeding mechanisms (7) for respectively feeding wires for the two printing heads (22).
2. The wire-cutting type dual-nozzle carbon fiber 3D printing device as claimed in claim 1, wherein: the structure of the spray head component (2) is as follows: the printing device comprises a shell (21) arranged on an X-direction moving assembly (4), a joint (26) penetrates through the upper wall surface of the shell (21) from top to bottom, longitudinal wire tubes (25) are arranged below the joint (26) at intervals, the bottom ends of the wire tubes (25) penetrate through the lower wall surface of the shell (21) downwards, a printing head (22) is arranged at the bottom end of each wire tube (25) in a penetrating mode, and a heating assembly (23) is further arranged on the lower portion of each wire tube (25) located inside the shell (21); the silk sent out from the silk feeding mechanism (7) enters the silk tube (25) downwards after passing through the joint (26), and the silk is melted at the lower part of the silk tube (25) and then is sprayed out downwards through the printing head (22); ball wheel assemblies (29) are mounted on the lower portion of the outer wall surface of the shell (21) along the circumferential direction.
3. The wire-cutting type dual-nozzle carbon fiber 3D printing device as claimed in claim 2, wherein: the outer side wall of the shell (21) is fixedly provided with a steering engine (28), the output end of the steering engine (28) faces downwards, an L-shaped blade (281) is fixedly arranged at the end part of the steering engine (28), the L-shaped blade (281) extends into the shell (21), and the cutting edge on the inner side of the L-shaped blade (281) is just opposite to the interval between the joint (26) and the wire tube (25).
4. The wire-cutting type dual-nozzle carbon fiber 3D printing device as claimed in claim 2, wherein: a radiator (24) is sleeved on a wire pipe (25) which is positioned above the heating component (23) in the shell (21), a fan (27) is fixedly arranged on the outer side wall of the shell (21), and the fan (27) blows air to the interior of the shell (21).
5. The wire-cutting type dual-nozzle carbon fiber 3D printing device as claimed in claim 2, wherein: the structure of the ball wheel assembly (29) is as follows: the device comprises a support (292) fixedly arranged on the outer wall surface of a shell (21), pin shafts (291) are movably arranged through the support (292) from top to bottom at intervals, ball wheels (294) are arranged at the bottom ends of the pin shafts (291), and a return spring (293) is sleeved on the pin shaft (291) between the ball wheels (294) and the outer bottom surface of the support (292); the lowermost face of the ball wheel (294) projects downwardly from the lowermost face of the print head (22).
6. The wire-cutting type dual-nozzle carbon fiber 3D printing device as claimed in claim 1, wherein: the structure of the wire feeding mechanism (7) is as follows: the wire feeding device comprises a motor base (72) fixedly arranged on an upright post (13), wherein a wire feeding motor (71) is fixedly arranged on one side surface of the motor base (72), a support (73) is fixedly arranged on the other opposite side surface of the motor base (72), the output end of the wire feeding motor (71) sequentially and horizontally penetrates through the motor base (72) and the support (73), and a large rotating wheel (78) is fixedly arranged at the end head of the output end of the wire feeding motor (71); a rocking block (74) is rotatably mounted on the side face of the support (73), a small rotating wheel (77) is fixedly mounted on the rocking block (74), a compression spring (75) is further mounted between the rocking block (74) and the support (73), and the circumferential face of the small rotating wheel (77) is tightly attached to the circumferential face of the large rotating wheel (78) under the action of the compression spring (75).
7. The wire-cutting type dual-nozzle carbon fiber 3D printing device as claimed in claim 6, wherein: the upper end head of the rocking block (74) is rotatably arranged with the support (73) through a rotating shaft, a compression spring (75) is arranged between one side of the lower end of the rocking block (74) and the support (73), and a small rotating wheel (77) is fixedly arranged on the other side of the lower end of the rocking block (74); the axial direction of the small rotating wheel (77) is parallel to the axial direction of the large rotating wheel (78), and a groove for embedding wires is formed in the circumferential surface of the small rotating wheel (77) along the circumferential direction;
the swinging block type motor is characterized by further comprising a shell (76) fixedly mounted on the side face of the motor base (72), the rocking block (74), the pressing spring (75), the small rotating wheel (77) and the large rotating wheel (78) are contained in the shell (76), and a wire passing hole penetrating through the shell (76) vertically is formed in the shell (76).
8. The wire-cutting type dual-nozzle carbon fiber 3D printing device as claimed in claim 1, wherein: two opposite outer side surfaces of the upper beam assembly (11) are respectively and fixedly provided with a side plate (1);
the structure of the Y-direction moving assembly (3) is as follows: the device comprises a Y-direction motor (31) fixedly mounted on one side plate (1), wherein the output end of the Y-direction motor (31) penetrates through the side plate (1) and is connected and mounted with a driving shaft (33) through a small belt mechanism (32); the belt mechanism (32) is positioned on the outer sides of the side plates (1), two end parts of the driving shaft (33) are respectively and rotatably installed on the two side plates (1), a driven shaft (37) parallel to the driving shaft (33) is further rotatably installed between the two side plates (1), and the driving shaft (33) and the driven shaft (37) are respectively positioned on the inner sides of two upper cross beams which are perpendicular to the side plates (1) in the upper beam assembly (11); a large belt mechanism (34) is respectively arranged between two end parts of the driving shaft (33) and two end parts of the driven shaft (37), the large belt mechanism (34) is positioned on the inner side of the side plate (1), and a Y-direction guide rod (36) is also arranged on the inner side surface of the side plate (1) below the large belt mechanism (34); y-direction sliding blocks (35) are fixedly arranged on belts of the single group of large belt mechanisms (34), an X-direction moving assembly (4) is jointly arranged between the two Y-direction sliding blocks (35), and the single Y-direction sliding block (35) is penetrated through by the corresponding Y-direction guide rod (36);
the structure of the X-direction moving assembly (4) is as follows: the X-direction motor (41) is fixedly mounted on one Y-direction sliding block (35), the output end of the X-direction motor (41) is arranged in the Y direction, the end part of the output end of the X-direction motor (41) is connected with and mounted with an X-direction belt mechanism (42), one belt wheel of the X-direction belt mechanism (42) is fixedly mounted on the output end of the X-direction motor (41), and the other belt wheel of the X-direction belt mechanism (42) is rotatably mounted on the other Y-direction sliding block (35); x-direction guide rods (43) are symmetrically arranged between the two Y-direction sliding blocks (35) which are positioned above and below the X-direction belt mechanism (42); an X-direction sliding block (44) is fixedly arranged on a belt of the X-direction belt mechanism (42), a spray head assembly (2) is fixedly arranged on the front side surface of the X-direction sliding block (44), and an X-direction guide rod (43) penetrates through the X-direction sliding block (44).
9. The wire-cutting type dual-nozzle carbon fiber 3D printing device as claimed in claim 1, wherein: the lifting driving component (8) has the structure that: the lifting mechanism comprises a lifting motor (81) fixedly arranged below a lower beam assembly (12), a supporting plate (84) is fixedly arranged on the top surface of the lower beam assembly (12) positioned above the lifting motor (81), the output end of the lifting motor (81) faces upwards, a vertically arranged screw rod (82) is arranged at the output end of the lifting motor (81), two ends of the screw rod (82) are respectively rotatably arranged with the supporting plate (84) and a rack, and a lifting guide rod (83) is arranged between the supporting plate (84) positioned at two sides of the screw rod (82) and the rack; the screw rod (82) is provided with a lifting plate (6) in a matched mode through a screw pair, and a lifting guide rod (83) penetrates through the lifting plate (6); the lifting plate (6) is of a U-shaped structure with an opening facing forwards, and the printing table top (5) is fixedly arranged on the lifting plate (6).
10. The use method of the wire-cutting type double-nozzle carbon fiber 3D printing equipment disclosed by claim 1 is characterized in that: the method comprises the following steps:
respectively leading the matrix and the precursor of the carbon fiber to pass through a wire feeding mechanism (7) and then into the corresponding printing head (22);
the lifting driving component (8) works to drive the printing table top (5) to vertically move, so that the printing table top (5) and the printing head (22) are spaced by a preset height;
the X-direction moving assembly (4) and the Y-direction moving assembly (3) work to drive the spray head assembly (2) to move to a preset position of the printing table top (5);
the wire feeding mechanism (7) works, the spray head assembly (2) works, protofilaments are conveyed into the spray head assembly (2) under the action of the wire feeding mechanism (7), and the protofilaments are melted in the spray head assembly (2) and are downwards output and printed on the printing table top (5) through the corresponding printing head (22);
meanwhile, the X-direction moving assembly (4) and the Y-direction moving assembly (3) work to drive the spray head assembly (2) to move in a horizontal plane relative to the printing table top (5), so that a preset path is printed on the printing table top (5);
the lifting driving component (8) works to drive the printing table top (5) to move downwards by one layer height; the wire feeding mechanism (7), the spray head assembly (2), the X-direction moving assembly (4) and the Y-direction moving assembly (3) continuously work to print;
when printing is carried out, the matrix material and the carbon fiber material are sequentially printed at intervals and compacted; printing a layer of base material, compacting by a ball wheel assembly (29) on the spray head assembly (2), printing a layer of carbon fiber material on the printed base material, and compacting by the ball wheel assembly (29);
the carbon fiber material cuts the precursor from above the print head (22) after each printing and stops the wire feed.
CN202011566945.1A 2020-12-25 2020-12-25 Wire-cutting type double-nozzle carbon fiber 3D printing equipment and using method thereof Active CN112895440B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113815228A (en) * 2021-07-21 2021-12-21 上海工程技术大学 Melting wire roll-in composite reinforced carbon fiber material additive printing device

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CN108127905A (en) * 2017-11-30 2018-06-08 浙江大学 Composite thermoplastic carbon fiber material intelligence structure manufacturing device and method
CN209454171U (en) * 2019-01-25 2019-10-01 南京航空航天大学 A kind of carbon fiber answers material varied angle electrical loss self-heating in-situ solidifying device
CN110667112A (en) * 2019-11-07 2020-01-10 江南大学 Continuous fiber reinforced composite material 3D printer shearing mechanism and using method

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Publication number Priority date Publication date Assignee Title
CN103707509A (en) * 2013-12-20 2014-04-09 西安交通大学 Expandable multi-material sprayer system for 3D (Three-Dimensional) printing
CN105216329A (en) * 2015-10-29 2016-01-06 武汉市贝恩三维科技有限公司 Far and near end one 3D printhead
CN108127905A (en) * 2017-11-30 2018-06-08 浙江大学 Composite thermoplastic carbon fiber material intelligence structure manufacturing device and method
CN209454171U (en) * 2019-01-25 2019-10-01 南京航空航天大学 A kind of carbon fiber answers material varied angle electrical loss self-heating in-situ solidifying device
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* Cited by examiner, † Cited by third party
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CN113815228A (en) * 2021-07-21 2021-12-21 上海工程技术大学 Melting wire roll-in composite reinforced carbon fiber material additive printing device

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