CN111016161A - Continuous carbon fiber 3D prints selectivity intermittent type feed device - Google Patents

Continuous carbon fiber 3D prints selectivity intermittent type feed device Download PDF

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Publication number
CN111016161A
CN111016161A CN201911354321.0A CN201911354321A CN111016161A CN 111016161 A CN111016161 A CN 111016161A CN 201911354321 A CN201911354321 A CN 201911354321A CN 111016161 A CN111016161 A CN 111016161A
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China
Prior art keywords
guide wheel
guide
carbon fiber
gear
driving mechanism
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CN201911354321.0A
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CN111016161B (en
Inventor
涂一文
张帆
崔坤腾
张俊
谭跃刚
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Shaoxing Shangyu District Institute Of Technology
Wuhan University of Technology WUT
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Shaoxing Shangyu District Institute Of Technology
Wuhan University of Technology WUT
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Priority to CN201911354321.0A priority Critical patent/CN111016161B/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
    • B29C64/10—Processes of additive manufacturing
    • B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
    • B29C64/118—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
    • 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
    • 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 discloses a continuous carbon fiber 3D printing selective intermittent feeding device, which comprises: the device comprises a first guide wheel, a second guide wheel, a first driving mechanism and a second driving mechanism, wherein one side of the outer peripheral surface of the first guide wheel is arranged opposite to one side of the outer peripheral surface of the second guide wheel, and the axis of the first guide wheel is parallel to the axis of the second guide wheel; the second driving mechanism may drive the opposing faces of the first guide wheel and the second guide wheel to approach/separate from each other. The wire rod (3D printing raw material) passes through the area between the first guide wheel and the second guide wheel, and is guided to the printing nozzle through the power of first guide wheel or/and the second guide wheel, and when the wire rod bonds with the workstation, the second actuating mechanism drives the opposite face of first guide wheel and second guide wheel and keeps away from each other, closes first actuating mechanism, and the wire rod can be continuously pulled out passively along with the removal of printing nozzle this moment to with initiative feeding switching for passive feeding.

Description

Continuous carbon fiber 3D prints selectivity intermittent type feed device
Technical Field
The invention relates to the technical field of 3D printing, in particular to a continuous carbon fiber 3D printing selective intermittent feeding device.
Background
The additive manufacturing technology (3D printing) is different from the traditional manufacturing mode, has the characteristics of no need of a die, a cutter and a clamp, capability of quickly and precisely manufacturing parts with any shapes and the like, and is listed as a strategic development technology by mainly developed countries. The method is widely applied to various fields such as automobile manufacturing, aerospace, military industry production, biomedicine, sports goods and the like. The 3D printing technology is used for three-dimensional forming of the carbon fiber composite material, can give full play to the advantages of a 3D printing process and the advantages of material performance, can efficiently and highly accurately manufacture light high-strength heat-resistant corrosion-resistant high-performance parts, and has wide prospects in the fields of aerospace, automobile manufacturing and the like.
The moving path of the 3D printing nozzle is controlled by the G code, the feeding length is calculated according to the moving path of the nozzle, parameter data in the calculating process can be accurate to thousands of bits and is not accurate to calculate, and the step loss and transmission errors of the stepping motor can cause the moving path length of the nozzle to be inconsistent with the feeding material length.
Disclosure of Invention
The invention aims to overcome the technical defects and provide a continuous carbon fiber 3D printing selective intermittent feeding device, which provides two states of active feeding and passive feeding for an extruding device in the continuous carbon fiber 3D printing process and can be switched at any time, so that the situation of path bending or material accumulation in a continuous feeding mode is avoided.
In order to achieve the technical purpose, the invention provides a selective intermittent feeding device for continuous carbon fiber 3D printing, which comprises: a first guide wheel, a second guide wheel, a first drive mechanism, a second drive mechanism, one side of the outer peripheral surface of the first guide wheel being disposed opposite to one side of the outer peripheral surface of the second guide wheel, and the axis of the first guide wheel being parallel to the axis of the second guide wheel; the first driving mechanism can drive the first guide wheel/the second guide wheel to rotate; the second driving mechanism may drive the opposing faces of the first guide wheel and the second guide wheel to approach/separate from each other.
Compared with the prior art, the invention has the beneficial effects that: when the continuous carbon fiber 3D printing selective intermittent feeding device is used, a wire (raw material for 3D printing) passes through an area between the first guide wheel and the second guide wheel and is guided to the printing nozzle through the power of the first guide wheel or/and the second guide wheel, then a 3D model can be printed on a workbench by the molten wire, when the wire is bonded with the workbench, the second driving mechanism is started to drive opposite surfaces of the first guide wheel and the second guide wheel to be away from each other, the first driving mechanism is closed, the wire can be continuously pulled out passively along with the movement of the printing nozzle, so that active feeding is switched into passive feeding, and the molten wire is compressed by using contact pressure between the printing nozzle and the workbench and between the printing nozzle and a solidified model to be bonded and molded, the problems that the material is accumulated due to too much feeding or the material is broken due to too little feeding and the like caused by the unmatched speed between the feeding device and the printing nozzle can be effectively avoided.
Drawings
Fig. 1 is a schematic perspective view of one embodiment of a continuous carbon fiber 3D printing selective intermittent feeding device provided by the invention;
FIG. 2 is a schematic view of a connection structure of a first guide wheel and a first gear in the present invention;
FIG. 3 is a schematic view of a connection structure of a second guide gear and a second gear according to the present invention;
FIG. 4 is a schematic structural diagram of an active feeding state of the continuous carbon fiber 3D printing selective intermittent feeding device provided by the invention;
fig. 5 is a schematic structural diagram of a passive feeding state of the continuous carbon fiber 3D printing selective intermittent feeding device provided by the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 2 and fig. 3, the present embodiment provides a selective intermittent feeding device for continuous carbon fiber 3D printing, including: the device comprises a first guide wheel 1, a second guide wheel 2, a first driving mechanism 3 and a second driving mechanism 4.
One side of the outer peripheral surface of the first guide wheel 1 is arranged opposite to one side of the outer peripheral surface of the second guide wheel 2, and the axis of the first guide wheel 1 is parallel to the axis of the second guide wheel 2, and the first driving mechanism 3 can drive the first guide wheel 1/the second guide wheel 2 to rotate, in this embodiment, the first driving mechanism 3 is a rotating motor, and the driving shaft of the first driving mechanism 3 is coaxially and fixedly connected with the first guide wheel 1, that is, in this embodiment, the first driving mechanism 3 only drives the first guide wheel 1 to rotate, obviously, the driving shaft of the first driving mechanism 3 can also be connected with the second guide wheel 2, or two first driving mechanisms 3 are provided, so that the first guide wheel 1 and the second guide wheel 2 can both actively rotate.
The second driving mechanism 4 can drive the opposite surfaces of the first guiding wheel 1 and the second guiding wheel 2 to approach/depart from each other, in this embodiment, the second driving mechanism 4 is only in driving connection with the second guiding wheel 2, the second driving mechanism 4 is used for changing the distance between the opposite surfaces of the first guiding wheel 1 and the second guiding wheel 2, when the distance between the first guiding wheel 1 and the second guiding wheel 2 is minimum, the gap between the first guiding wheel 1 and the second guiding wheel 2 can be just passed by a wire (raw material for 3D printing), and meanwhile, the first guiding wheel 1 and the second guiding wheel 2 rotate to guide the wire to be fed actively.
When the continuous carbon fiber 3D printing selective intermittent feeding device is used, a wire (raw material for 3D printing) passes through an area between the first guide wheel 1 and the second guide wheel 2, the wire is guided to a printing nozzle through the power of the first guide wheel 1 or/and the second guide wheel 2, then the 3D model is printed on a workbench by the molten wire, when the wire is bonded with the workbench, the second driving mechanism 4 is started to drive the opposite surfaces of the first guide wheel 1 and the second guide wheel 2 to be away from each other, the first driving mechanism 1 is closed, the wire is continuously pulled out passively along with the movement of the printing nozzle, so that the active feeding is switched into the passive feeding, and the molten wire is compressed by using the contact pressure between the printing nozzle and the workbench and the contact pressure between the printing nozzle and the solidified model, make its adhesion shaping, can effectively avoid between feed arrangement and the printing nozzle speed mismatch and the too much feeding that causes leads to the material to pile up or the too little material fracture scheduling problem that leads to of feeding.
The embodiment also provides a specific implementation manner, two sides of the first guiding wheel 1 are respectively provided with a first gear 1a, the radius of the reference circle of the first gear 1a is larger than that of the first guiding wheel 1, and the first gear 1a is coaxially and fixedly connected with the first guiding wheel 1; two sides of the second guide wheel 2 are both provided with a second gear 2a, the radius of the reference circle of the second gear 2 is larger than the radius of the second guide wheel 2, and the second gear 2a is coaxially and fixedly connected with the second guide wheel, specifically, the first gear 1a and the second gear 2a are both straight gears, the radii of the first guide wheel 1 and the second guide wheel 2 are equal, the thicknesses of the first guide wheel 1 and the second guide wheel 2 are equal, the radii of the reference circles of the first gear 1a and the second gear 2a are equal, by the meshing of the first gear 1a and the second gear 2a, the linear velocities of the first traction wheel 1 and the second traction wheel 2 are always the same, and simultaneously, the wire is prevented from separating from the area between the first traction wheel 1 and the second traction wheel 2 in the active feeding process, in this embodiment, the outer peripheral surfaces of the first traction wheel 1 and the second traction wheel 2 are both provided with friction grains or protrusions uniformly arranged, so that the outer peripheral surfaces of the first traction wheel 1 and the second traction wheel 2 are rougher, and the guiding effect is improved.
Referring to fig. 4, the active feed state:
when the second driving mechanism 4 drives the opposite surfaces of the first guide wheel 1 and the second guide wheel 2 to approach each other, the two first gears 1a are meshed with the two second gears 2a in a one-to-one correspondence manner, and the first driving mechanism drives the first guide wheel to rotate, so that the wire is actively guided.
Referring to fig. 5, the passive feeding state:
when the second driving mechanism 4 drives the opposite surfaces of the first guide wheel 1 and the second guide wheel 2 to be away from each other, the two first gears 1a are separated corresponding to the two second gears 2a one by one, the first driving mechanism stops actively outputting the rotation torque, after the opposite surfaces of the first guide wheel 1 and the second guide wheel 2 are away from each other, the wire is not subjected to the pressing force of the first guide wheel 1 and the second guide wheel 2 any more, the friction force of the wire on the outer peripheral surface of the first guide wheel 1 is small (negligible), the wire is subjected to the feeding action only by the passive traction force, and a third driving mechanism can be arranged to drive the first guide wheel 1 and the first driving mechanism 3 to move rightwards integrally so that the first guide wheel 1 and the wire are completely separated.
First guide wheel 1 with second guide wheel 2 all set up in the intermediate position of mounting panel, continuous carbon fiber 3D print selectivity intermittent type feed arrangement still include first guiding tube 5, second guiding tube 6, mounting panel 7, first guiding tube 5 is fixed in the upper portion of mounting panel 7, second guiding tube 6 is fixed in the lower part of mounting panel 7, the lower extreme of first guiding tube 5 with the upper end of second guiding tube 6 is coaxial, and the lower extreme axis of first guiding tube 5/the upper end axis of second guiding tube 6 passes first guiding wheel 1 with the region between the second guiding wheel 2 opposite face, first guiding tube 5 in second guiding tube 6 plays the guide effect to the wire rod, first guiding tube 5, second guiding tube 6 are the indisputable fluorine dragon pipe.
The continuous carbon fiber 3D printing selective intermittent feeding device further comprises a clutch block 8, wherein the clutch block 8 comprises a rotating block 81, a first connecting plate 82, a second connecting plate 83 and an iron block 84, the rotating block 81 is rotatably connected with the mounting plate 7, one end of the first connecting plate 82 is fixedly connected with the rotating block 81, the other end of the first connecting plate 82 is rotatably connected with the second guide wheel 2, one end of the second connecting plate 83 is fixedly connected with the rotating block 81, and the other end of the second connecting plate 83 is fixedly connected with the iron block 84; the second driving mechanism 4 is an electromagnet, the electromagnet is arranged close to the iron block 84, the magnetic force generated by the electromagnet can drive the rotating block 81 to rotate relative to the mounting plate 7, the distance between the first guide wheel 1 and the second guide wheel 2 is rapidly changed by switching on and off the electromagnet in the embodiment, the first connecting plate 82 and the second connecting plate 83 are arranged in an L shape, the rotating block 81 is fixed at the connecting position of the first connecting plate 82 and the second connecting plate 83, when the electromagnet is powered off, the first connecting plate 82 is arranged approximately vertically, the first connecting plate 82 is positioned above the rotating block 81 at the moment, the second connecting plate 83 is arranged approximately horizontally, the second connecting plate 83 is positioned at the left side of the rotating block 81 at the moment, the iron block 84 is fixed at the upper part of the second connecting plate 83, and the electromagnet is arranged above the iron block 84, when the electro-magnet circular telegram, the turning block 81 is clockwise changeed, and makes first gear 1a with second gear 2a meshes mutually, works as when the electro-magnet outage under the action of gravity of iron plate 84, the anticlockwise pivot of turning block 81, first gear 1a with second gear 2a breaks away from, and the right side of turning block 81 is provided with limiting plate 81a, limiting plate 81a is used for limiting turning block 81 turned angle under the action of gravity of iron plate is too big, plays the restriction simultaneously the effect that 81 angles was changeed to the turning block avoids iron plate 84 to move the distance down too far, when the electro-magnet was electrified once more, can't adsorb iron plate 84.
The working principle is as follows: when the continuous carbon fiber 3D printing selective intermittent feeding device is used, a wire (raw material for 3D printing) passes through an area between the first guide wheel 1 and the second guide wheel 2, the wire is guided to a printing nozzle through the power of the first guide wheel 1 or/and the second guide wheel 2, then the 3D model is printed on a workbench by the molten wire, when the wire is bonded with the workbench, the second driving mechanism 4 is started to drive the opposite surfaces of the first guide wheel 1 and the second guide wheel 2 to be away from each other, the first driving mechanism 1 is closed, the wire is continuously pulled out passively along with the movement of the printing nozzle, so that the active feeding is switched into the passive feeding, and the molten wire is compressed by using the contact pressure between the printing nozzle and the workbench and the contact pressure between the printing nozzle and the solidified model, make its adhesion shaping, can effectively avoid between feed arrangement and the printing nozzle speed mismatch and the too much feeding that causes leads to the material to pile up or the too little material fracture scheduling problem that leads to of feeding.
The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.

Claims (6)

1. A continuous carbon fiber 3D printing selective intermittent feeding device is characterized by comprising: a first guide wheel, a second guide wheel, a first drive mechanism, a second drive mechanism, one side of the outer peripheral surface of the first guide wheel being disposed opposite to one side of the outer peripheral surface of the second guide wheel, and the axis of the first guide wheel being parallel to the axis of the second guide wheel; the first driving mechanism can drive the first guide wheel/the second guide wheel to rotate; the second driving mechanism may drive the opposing faces of the first guide wheel and the second guide wheel to approach/separate from each other.
2. The continuous carbon fiber 3D printing selective intermittent feeding device according to claim 1, wherein a first gear is arranged on each side of the first guide wheel, the radius of a reference circle of the first gear is larger than that of the first guide wheel, and the first gear is coaxially and fixedly connected with the first guide wheel; a second gear is arranged on each of two sides of the second guide wheel, the radius of a reference circle of the second gear is larger than that of the second guide wheel, and the second gear is coaxially and fixedly connected with the second guide wheel; when the second driving mechanism drives the opposite surfaces of the first guide wheels and the second guide wheels to approach each other, the two first gears are meshed with the two second gears in a one-to-one correspondence manner; when the second driving mechanism drives the opposite surfaces of the first guide wheel and the second guide wheel to be away from each other, the two first gears are in one-to-one correspondence with the two second gears to be separated from each other.
3. The continuous carbon fiber 3D printing selective intermittent feeding device according to claim 2, wherein the first guide wheel and the second guide wheel have equal radius and the first guide wheel and the second guide wheel have equal thickness; the reference circle radius of the first gear is equal to that of the second gear.
4. The continuous carbon fiber 3D printing selective intermittent feeding device according to claim 2, further comprising a mounting plate and a clutch block, wherein the clutch block comprises a rotating block, a first connecting plate, a second connecting plate and an iron block, the rotating block is rotatably connected with the mounting plate, one end of the first connecting plate is fixedly connected with the rotating block, the other end of the first connecting plate is rotatably connected with the second guide wheel, one end of the second connecting plate is fixedly connected with the rotating block, and the other end of the second connecting plate is fixedly connected with the iron block; the second driving mechanism is an electromagnet, the electromagnet is close to the iron block and arranged, and magnetic force generated by the electromagnet can drive the rotating block to rotate relative to the mounting plate.
5. The continuous carbon fiber 3D printing selective intermittent feeding device according to claim 4, wherein the first guide wheel and the second guide wheel are both arranged at the middle position of the mounting plate, the continuous carbon fiber 3D printing selective intermittent feeding device further comprises a first guide pipe and a second guide pipe, the first guide pipe is fixed at the upper part of the mounting plate, the second guide pipe is fixed at the lower part of the mounting plate, the lower end of the first guide pipe is coaxial with the upper end of the second guide pipe, and the lower end axis of the first guide pipe/the upper end axis of the second guide pipe passes through the area between the opposite surfaces of the first guide wheel and the second guide wheel.
6. The continuous carbon fiber 3D printing selective intermittent feeding device according to claim 5, wherein the first guide pipe and the second guide pipe are both Teflon guide pipes.
CN201911354321.0A 2019-12-25 2019-12-25 Continuous carbon fiber 3D prints selectivity intermittent type feed device Active CN111016161B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113619116A (en) * 2021-09-14 2021-11-09 深圳市赛柏敦自动化设备有限公司 Carbon fiber 3D prints laying machine

Citations (4)

* Cited by examiner, † Cited by third party
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
CN203713082U (en) * 2014-02-13 2014-07-16 英华达（上海）科技有限公司 Double-color printing and extruding device
CN108145964A (en) * 2016-12-02 2018-06-12 财团法人工业技术研究院 Three-dimensional printing feeding device and variable orifice device
CN209022462U (en) * 2018-10-23 2019-06-25 深圳市富源盛电子科技有限公司 The feeding mechanism of 3D printer

Patent Citations (4)

* Cited by examiner, † Cited by third party
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
CN203713082U (en) * 2014-02-13 2014-07-16 英华达（上海）科技有限公司 Double-color printing and extruding device
CN108145964A (en) * 2016-12-02 2018-06-12 财团法人工业技术研究院 Three-dimensional printing feeding device and variable orifice device
CN209022462U (en) * 2018-10-23 2019-06-25 深圳市富源盛电子科技有限公司 The feeding mechanism of 3D printer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113619116A (en) * 2021-09-14 2021-11-09 深圳市赛柏敦自动化设备有限公司 Carbon fiber 3D prints laying machine

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