WO2023065603A1 - Appareil d'impression 3d et mécanisme d'alimentation de filament rotatif associé - Google Patents

Appareil d'impression 3d et mécanisme d'alimentation de filament rotatif associé Download PDF

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Publication number
WO2023065603A1
WO2023065603A1 PCT/CN2022/083860 CN2022083860W WO2023065603A1 WO 2023065603 A1 WO2023065603 A1 WO 2023065603A1 CN 2022083860 W CN2022083860 W CN 2022083860W WO 2023065603 A1 WO2023065603 A1 WO 2023065603A1
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WO
WIPO (PCT)
Prior art keywords
wire feeding
consumable
dyeing
rotary
rotary cutting
Prior art date
Application number
PCT/CN2022/083860
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English (en)
Chinese (zh)
Inventor
魏宏辉
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江苏浩宇电子科技有限公司
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Filing date
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Application filed by 江苏浩宇电子科技有限公司 filed Critical 江苏浩宇电子科技有限公司
Publication of WO2023065603A1 publication Critical patent/WO2023065603A1/fr

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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
    • B29C64/30—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

Definitions

  • the invention relates to the technical field of 3D printing equipment, in particular to a 3D printing equipment and a rotary wire feeding mechanism applied to the 3D printing equipment.
  • 3D printing technology is more and more widely used in various fields. At the same time, 3D printing technology also appears in people's life in the form of more types of products. Common products include 3D printers and 3D printers. printing pen.
  • 3D printers The working principle of 3D printers is basically the same as that of ordinary printers, but the printing materials are somewhat different.
  • the printing materials of ordinary printers are ink and paper, while 3D printers are equipped with different "printing materials” such as metal, ceramics, plastics, sand, etc., which are real.
  • the "printed materials” can be superimposed layer by layer through computer control, and finally the blueprint on the computer can be turned into a real object.
  • a 3D printer is a device that can "print” a real 3D object, such as printing a robot, printing a toy car, printing various models, or even food.
  • the 3D printing pen is different from the 3D printer that realizes 3D printing through the movement of the printing nozzle driven by the mechanical arm: the 3D printing pen is controlled by human hands, and the 3D printing pen can realize three-dimensional painting according to the wishes of the person, that is to say, the user only needs to pass Traditional brush operations can draw three-dimensional patterns in a three-dimensional environment.
  • the 3D printing pen adopts hot-melt deposition technology, and the ink inside it is made of hot-melt materials, such as PLA (polylactic acid) material or ABS (acrylonitrile-butadiene-styrene copolymer) material, which are also commonly called consumables.
  • PLA polylactic acid
  • ABS acrylonitrile-butadiene-styrene copolymer
  • An existing 3D drawing pen includes a pen shell, and the inside of the pen shell is provided with a feeder along its length direction, the outlet end of the feeder is connected to the nozzle of the 3D drawing pen, and the wire feeding mechanism is arranged on the pen.
  • the inner cavity of the shell, the wire feeding mechanism includes a worm and a drive motor, the axial direction of the worm is parallel to the length direction of the material channel, the worm has at least two helical teeth, and the pen housing corresponds to the
  • the worm is provided with a receiving groove, and one side of the receiving groove runs through the material channel, and the driving motor drives the worm to rotate, and the helical teeth on the worm rotate and cut into the consumables, driving the consumables to spirally advance.
  • the main structure for advancing consumables is the helical tooth.
  • the helical tooth has continuous threads.
  • the frictional force of consumables usually plastic filaments
  • the helical teeth are arranged on one side of the consumables, resulting in uneven stress on the consumables, which further reduces the consistency of the consumables after they pass through.
  • the present invention provides a 3D printing device and its rotary wire feeding mechanism.
  • a rotary wire feeding mechanism applied to 3D printing equipment including a driving device, a transmission assembly and a rotary cutting blade arranged in sequence according to the transmission sequence, and the rotary cutting blade has consumable drive
  • the channel is used to wrap the consumables and convey them forward.
  • the rotary cutting blade includes a driven rotating base and an elastic sheet that is inclined inwardly from the driven rotating base.
  • the driven rotating base and the The transmission assembly forms a transmission fit, and the engaging elastic sheet is at least partially obliquely cut into the consumable to apply a propulsion force for the consumable to move forward.
  • the inclined blade has a cutting surface that gradually slopes outward from bottom to top.
  • the consumable lead P F/(n ⁇ (D/2) ⁇ 2), wherein F is the extruded amount of the consumable, and n is the rotational speed of the driving device.
  • the rotary cutting blade is coaxial with the consumable material passage, and is fixedly assembled in the transmission assembly, so that the rotary cutting blade and the wire feeding gear rotate synchronously.
  • the present invention also provides a 3D printing pen, which includes:
  • a pen body which is provided with a conveying channel for consumables to pass through, and the pen body includes a nozzle;
  • the rotary wire feeding mechanism further includes a wire feeding motor, a wire feeding drive assembly, and a rotating base, the rotating base has a base channel for the consumables to pass through, and a plurality of the rotary cutting elements Connected to the rotating base, when the wire feeding motor is working, the rotating base is driven to rotate by the wire feeding transmission assembly, so as to drive a plurality of the rotary cutting elements to rotate.
  • the wire feeding transmission assembly includes an input gear driven by the wire feeding motor and a wire feeding gear meshed with the input gear, wherein the rotating base is driven to rotate by the wire feeding gear .
  • the wire feeding transmission assembly further includes a wire feeding pipe, and the wire feeding pipe rotates synchronously with the wire feeding gear to drive the rotating base to rotate synchronously.
  • the wire feeding pipeline includes a connecting pipeline and a wire feeding pipeline connected to the connecting pipeline, and a connecting hole is formed in the connecting pipeline for accommodating the rotating base and the rotary cutting element .
  • the wire feeding drive assembly further includes a holding element, the holding element has a middle through hole for the consumable to pass through, and the holding element holds the rotating base on all the connecting pipes. inside the connecting hole.
  • the wire feeding gear is sleeved on the outside of the wire feeding pipe, and when the input gear drives the wire feeding gear to rotate, the wire feeding pipe rotates synchronously with the wire feeding gear, And further drive the rotating base arranged outside the wire feeding pipeline to rotate, so as to rotate each of the rotary cutting elements.
  • the rotary base has a plurality of installation slots, and each of the rotary cutting elements is assembled in the corresponding installation slot of the rotary base. When the wire feeding motor is working, the The wire feeding transmission assembly drives the rotating base to rotate, so as to drive a plurality of the rotary cutting elements to rotate.
  • the rotating wire feeding mechanism further includes a holding element, the holding element has a middle through hole for the consumable to pass through, and the holding element is sleeved on the outside of the rotating base, and includes A plurality of holding arms, each holding arm presses against the corresponding rotary cutting element.
  • the rotating wire feeding mechanism further includes a rotating base and a wire feeding motor, the wire feeding motor has a motor through hole, and a base channel is formed in the rotating base for the consumables to pass through A plurality of the rotary cutting elements are spaced apart from each other and extend on the rotating base, wherein the rotating base is arranged coaxially with the wire feeding motor and driven by the wire feeding motor.
  • the wire feeding motor includes an output shaft, and the rotating base is coupled to the output shaft of the wire feeding motor to be driven by the wire feeding motor.
  • the rotary wire feeding mechanism includes two rotary cutting elements, wherein the two rotary cutting elements are adapted to be arranged on opposite sides of the consumable, and the two rotary cutting elements The rotational force acting on the consumable is in the opposite direction to reduce the rotation of the consumable.
  • the rotary wire feeding mechanism includes three rotary cutting elements, wherein the three rotary cutting elements are adapted to evenly surround the consumable.
  • a plurality of said rotary cutting elements are arranged to cut perpendicularly into the contact surface of the consumable and form a helix angle ⁇ .
  • the 3D printing pen further includes a dyeing mechanism for dyeing the consumable, and the heating mechanism heats and melts the dyed consumable to output colored 3D printing materials.
  • the dyeing mechanism includes a dye box, a dyeing part, and a dyeing drive mechanism, wherein the dyeing part is assembled in the dye box, and the dyeing part is driven by the dyeing drive mechanism to make the dyeing part At least a portion of contacting the consumable to dye the consumable.
  • the dyeing mechanism includes a plurality of dyeing parts, and the dyeing driving mechanism is arranged to make at least a part of different dyeing parts contact the consumable, so as to switch the color of the consumable.
  • the dyeing mechanism includes a dyeing motor, a dyeing drive assembly, and a dyeing drive.
  • the dyeing drive assembly driven by the dyeing motor moves to drive the dyeing drive.
  • the piece moves to a position where the dyeing piece is pushed, so that at least a portion of the dyeing piece remains close to the consumable to dye the consumable.
  • the dyeing mechanism includes a plurality of dyeing driving parts
  • the dyeing transmission assembly includes an output gear, a dyeing drive gear, a movable element and a fixed element
  • the output gear is coupled to the dyeing motor
  • the dyeing drive gear is meshed with the output gear
  • the movable element is connected to the dyeing drive gear to move relative to the fixed element, so that the movable element and the fixed element cooperate to switch between different
  • the dyeing driving part is used to push the corresponding dyeing part.
  • the fixing element has a through hole, a plurality of perforations and a plurality of chutes, the through holes allow the consumables to pass through, and the plurality of through holes allow the corresponding plurality of dyeing pieces to pass through,
  • the plurality of dyeing driving members slide along the corresponding plurality of chutes, wherein the plurality of through holes communicate with the corresponding chutes and the through holes in the middle respectively.
  • one of the dyeing driving elements of the plurality of dyeing driving elements is allowed to move along its corresponding chute until the dyeing driving The piece reaches the position of the dyed piece pushed through the corresponding said perforation.
  • the movable element has a passage hole for the consumable to pass through and a movable groove
  • the movable groove has a proximal region and a distal region, wherein the movable element and the fixed element create During relative movement, when one of the dyeing driving parts is driven to move along the active groove and moves to the adaxial area, the dyeing driving part slides along the corresponding chute at the same time, thereby using to push the dyed end of the corresponding dyed piece.
  • each of the dyeing driving parts includes a sliding part and a rotating part, the sliding part is driven to slide along the corresponding chute, and the rotating part is driven to slide along the movable element.
  • the movable slot rotates.
  • the dyeing driving mechanism has a plurality of chutes, and each of the dyeing driving parts is driven to move along the corresponding chute so that at least a part of the dyeing part contacts the consumable, so as to Consumables for staining.
  • the dyeing driving mechanism has an active slot, and the active slot has an adaxial area and an abaxial area, and when the dyeing driving member is driven to move to the adaxial area of the active slot, At the same time, it moves along the corresponding chute to make at least a part of the dyeing member contact the consumable, and when the dyeing driving member is driven to move to the abaxial area of the active groove, the dyeing driving member Stay away from the stained pieces.
  • the consumable is propelled by a plurality of said rotary cutting elements perpendicularly cutting into the contact surface of the consumable, wherein a plurality of said rotary cutting elements interact with the consumable to form a helix angle omega.
  • Fig. 1 is a schematic diagram of the overall assembly of the rotary wire feeding mechanism of the 3D printing device according to the first preferred embodiment of the present invention.
  • Fig. 8 is a sectional view along line A-A in Fig. 7 .
  • Fig. 12 and Fig. 13 are exploded schematic diagrams illustrating the rotary filament feeding mechanism and the dyeing mechanism of the 3D printing pen according to the second preferred embodiment of the present invention.
  • Fig. 14 is an exploded view showing the rotary wire feeding mechanism of the 3D printing pen according to the second preferred embodiment of the present invention.
  • Fig. 15 is a structural schematic diagram illustrating the working state of the rotary wire feeding mechanism of the 3D printing pen according to the second preferred embodiment of the present invention.
  • Fig. 16 is a sectional view along line B-B in Fig. 15 .
  • Fig. 20 is an exploded schematic diagram illustrating the movable elements and fixed elements of the dyeing mechanism of the 3D printing pen according to the second preferred embodiment of the present invention.
  • Fig. 28A is a schematic perspective view showing the rotary wire feeding mechanism of the 3D printing pen according to the third preferred embodiment of the present invention.
  • the dyeing drive mechanism 330 is used to drive the dyeing piece 320 so that at least a part of the dyeing piece 320 can contact and move away from the consumable 500, so that at least a part of the dyeing piece 320 is in contact with the consumable When the 500 is in contact with each other, the surface of the consumable 500 can be coated with the color dye to be dyed.
  • the dyeing driving mechanism 330 includes a dyeing motor 331 , a dyeing transmission assembly 332 , and a dyeing driving member 333 .
  • the dyeing motor 331 When the dyeing motor 331 is started to work, the dyeing transmission assembly 332 is driven to move to the position where the dyeing drive part 333 can push the dyeing part 320. At this time, the dyeing motor 331 stops working, so that At least a part of the dyeing piece 320 is kept close to the consumable 500 to dye the consumable 500 .
  • the dyeing drive assembly 322 drives the dyeing drive element 333 to move away from the dyeing piece 320, so that the dyeing piece 320 is away from the consumable 500, so that the current dyeing piece is stopped. 320 performs a dyeing operation on the consumable 500 .
  • the rotary wire feeding mechanism 200A includes two rotary cutting elements 210A, and the blade surface 2111A of each rotary cutting element 210A is in contact with the consumable 500 so that the rotary cutting element 210A is in the
  • the cut-in helix 501 of the consumable 500 and the cylindrical end surface of the consumable 500 form the helix angle ⁇ shown in FIG. 18 above, wherein the range of the helix angle ⁇ is optimally controlled within 8.3° ⁇ 45°.
  • each of the rotary cutting elements 210A cuts into the surface of the consumable 500 vertically, so as to further prevent the consumable 500 from tilting and moving unnecessary when being cut by the rotary cutting element 210A, Therefore, the consumable material 500 can move forward smoothly and reliably.
  • the rotary wire feeding mechanism 200B includes two rotary cutting elements 210A, and the two rotary cutting elements 210A are adapted to be located on opposite sides of the consumable to push the consumable, and The blade surfaces 2111A of the two rotary cutting elements 210A extend obliquely, so that the rotational force of the two rotary cutting elements 210A on the consumable material 500 is opposite, thereby reducing the rotational force on the consumable material 500 .
  • the wire feeding motor 230B has a motor through hole 231B and includes an output shaft 232B, the motor through hole 231B extending through the output shaft 232B as a part of the delivery channel 130 . That is to say, the consumable 500 can pass through the wire feeding motor 230B.
  • the rotating base 220B can be directly coupled to the output shaft 232B of the wire feeding motor 230B to be driven to rotate by the wire feeding motor 230B.
  • the rotating wire feeding mechanism 200B may further include a holding element 244B, and the rotating base 220B is sleeved on the outside of the output shaft 232B of the wire feeding motor 230B.
  • the structure of the holding element 244B is similar to that of the holding element 244A in the above embodiment, it is sleeved on the outside of the rotating base 220B, and holds the rotary cutting element 10B to be able to vertically cut into the consumable 500 .
  • the rotating base 220B is arranged coaxially with the wire feeding motor 230B, thereby reducing the transmission structure for driving the rotating base 220B and making the structure of the 3D printing pen more compact , smaller in size.

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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

La présente invention concerne un appareil d'impression 3D et un stylo d'impression 3D, et un mécanisme d'alimentation de filament rotatif associé. Le stylo d'impression 3D comprend un corps de stylo, un mécanisme d'alimentation de filament rotatif et un mécanisme de chauffage, un canal de transport pour le passage d'un consommable étant disposé à l'intérieur du corps de stylo ; et le mécanisme d'alimentation de filament rotatif comprend une pluralité d'éléments de coupe rotatifs agencés de façon espacée les uns par rapport aux autres, et la pluralité d'éléments de coupe rotatifs sont configurés pour être entraînés en rotation, de façon à couper et alimenter le consommable, de façon à transporter le consommable dans le canal de transport vers une buse. L'invention concerne en outre des lames de coupe rotatives, et le défaut d'une structure de dent hélicoïdale existante s'arrêtant en raison d'un frottement excessif ou ralentissant en raison d'un frottement trop faible est surmonté, de sorte que les exigences pour des tolérances positives et négatives d'un consommable sont faibles, et le consommable peut être transporté de façon stable et fiable vers l'avant.
PCT/CN2022/083860 2021-10-22 2022-03-29 Appareil d'impression 3d et mécanisme d'alimentation de filament rotatif associé WO2023065603A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202122561630.4 2021-10-22
CN202122561630.4U CN216300195U (zh) 2021-10-22 2021-10-22 一种应用于3d打印设备的旋转进丝机构

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WO2023065603A1 true WO2023065603A1 (fr) 2023-04-27

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN215704147U (zh) * 2021-09-16 2022-02-01 江苏浩宇电子科技有限公司 一种耗材着色机构及其热熔器

Citations (7)

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Publication number Priority date Publication date Assignee Title
CN206598534U (zh) * 2017-02-06 2017-10-31 苏州探索者机器人科技有限公司 一种3d打印笔用传动装置
CN206703528U (zh) * 2017-04-06 2017-12-05 无锡太尔时代科技有限公司 一种3d打印机的送进机构
KR101853431B1 (ko) * 2017-08-21 2018-05-02 주식회사 3디나라 3d프린터용 익스트루더
CN212684717U (zh) * 2020-05-13 2021-03-12 江苏浩宇电子科技有限公司 一种3d绘图笔用旋切进丝机构
CN112743845A (zh) * 2020-12-29 2021-05-04 深圳市创想三维科技有限公司 3d打印挤出装置以及具有其的3d打印机
CN213261124U (zh) * 2020-05-21 2021-05-25 诺思贝瑞新材料科技（苏州）有限公司 一种用于3d打印不同硬度材料的进丝结构
US20210291452A1 (en) * 2018-05-22 2021-09-23 Veda Group B.V Method, 3d manufacturing system, extruder head therfor

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206598534U (zh) * 2017-02-06 2017-10-31 苏州探索者机器人科技有限公司 一种3d打印笔用传动装置
CN206703528U (zh) * 2017-04-06 2017-12-05 无锡太尔时代科技有限公司 一种3d打印机的送进机构
KR101853431B1 (ko) * 2017-08-21 2018-05-02 주식회사 3디나라 3d프린터용 익스트루더
US20210291452A1 (en) * 2018-05-22 2021-09-23 Veda Group B.V Method, 3d manufacturing system, extruder head therfor
CN212684717U (zh) * 2020-05-13 2021-03-12 江苏浩宇电子科技有限公司 一种3d绘图笔用旋切进丝机构
CN213261124U (zh) * 2020-05-21 2021-05-25 诺思贝瑞新材料科技（苏州）有限公司 一种用于3d打印不同硬度材料的进丝结构
CN112743845A (zh) * 2020-12-29 2021-05-04 深圳市创想三维科技有限公司 3d打印挤出装置以及具有其的3d打印机

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