CN111391319A - Variable-diameter 3D printer extrusion head - Google Patents
Variable-diameter 3D printer extrusion head Download PDFInfo
- Publication number
- CN111391319A CN111391319A CN202010234581.0A CN202010234581A CN111391319A CN 111391319 A CN111391319 A CN 111391319A CN 202010234581 A CN202010234581 A CN 202010234581A CN 111391319 A CN111391319 A CN 111391319A
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- CN
- China
- Prior art keywords
- nozzle
- auxiliary
- extrusion head
- auxiliary nozzle
- printer
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- B29C64/205—Means for applying layers
- B29C64/209—Heads; Nozzles
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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]
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- 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
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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)
- Coating Apparatus (AREA)
Abstract
The invention provides a variable-diameter 3D printer extrusion head, and aims to solve the technical problem that the size of an outlet aperture of a nozzle of the extrusion head of an existing 3D printer cannot be changed. The extrusion head comprises a fixed nozzle, the tail end of the fixed nozzle is a circular-table-shaped nozzle discharging part, an auxiliary nozzle is arranged on the periphery of the surface of the nozzle discharging part, and the auxiliary nozzle can move along an outlet of the nozzle discharging part; when the auxiliary nozzle moves in place, the outlet caliber of the nozzle is smaller than that of the nozzle discharging part, so that the outlet caliber of the nozzle of the 3D printer extrusion head has two sizes, namely the outlet caliber of a fixed nozzle is larger, the outlet caliber of an auxiliary nozzle is smaller, and the outlet calibers of the fixed nozzle and the auxiliary nozzle are circular, so that the forming precision of a printed piece cannot be influenced.
Description
Technical Field
The invention relates to the field of 3D printing, in particular to an extrusion head of a variable-diameter 3D printer
Background
The 3D printer based on the FDM process is used for stacking the required model samples layer by layer on a forming table by heating and melting hot melt materials from an extrusion head and then extruding the hot melt materials from a nozzle. The extrusion head is a core component of the 3D printer, and the extrusion heads of the current main 3D printer are all single nozzles, so that the size of the nozzles cannot be changed; and a small part of printer extrusion heads can change the caliber of the outlet of the nozzle, but the section shape of the extruded part is polygonal, so that the forming precision of a printed part is greatly reduced, and the printed sample part also has structural defects.
Disclosure of Invention
Aiming at the technical problem that the size of the outlet aperture of the nozzle of the extrusion head of the existing 3D printer cannot be changed, the invention aims to provide the extrusion head of the 3D printer with the variable diameter.
In order to achieve the purpose, the invention adopts the following technical scheme:
the extrusion head of the variable-diameter 3D printer comprises a fixed nozzle, wherein the tail end of the fixed nozzle is a circular-table-shaped nozzle discharging part, an auxiliary nozzle is arranged on the periphery of the surface of the nozzle discharging part, and the auxiliary nozzle can move towards the outlet of the nozzle discharging part; when the auxiliary nozzle moves in place, the inner wall of the auxiliary nozzle is attached to the surface of the nozzle discharging part, and the caliber of the nozzle outlet is smaller than that of the nozzle discharging part.
Further, the auxiliary nozzle includes a left auxiliary nozzle portion and a right auxiliary nozzle portion, and the left auxiliary nozzle portion and the right auxiliary nozzle portion are combined into a truncated cone-shaped auxiliary nozzle when they are moved into position.
Further, the left auxiliary nozzle portion and the right auxiliary nozzle portion are symmetrically mounted on the outer periphery of the surface of the nozzle discharging portion with the axial direction of the nozzle discharging portion as a center of symmetry.
The invention has the beneficial effects that:
in order to solve the technical problem that the caliber of the discharge outlet of the fixed nozzle cannot be changed, the variable-diameter 3D printer extrusion head provided by this embodiment further includes an auxiliary nozzle, the auxiliary nozzle is installed at the periphery of the surface of the discharge part of the nozzle, the discharge part of the nozzle can move towards the outlet of the discharge part of the nozzle under the driving of the driving element, when the auxiliary nozzle moves in place, the inner wall of the auxiliary nozzle is in contact with the surface of the discharge part of the nozzle, that is, the whole auxiliary nozzle moves in place and is in a circular truncated cone shape to serve as an extension of the discharge part of the fixed nozzle, so that when the whole auxiliary nozzle moves in place, the caliber of the nozzle outlet is smaller than the caliber of the discharge part of the nozzle, so that the caliber of the nozzle of the 3D printer extrusion head has two dimensions, that is, the caliber of the fixed nozzle is larger, and the caliber of the, the nozzle is small, and the outlet calibers of the fixed nozzle and the auxiliary nozzle are circular, so that the forming precision of a printed piece cannot be influenced.
Drawings
Fig. 1 is a schematic overall structure diagram of an extrusion head of a variable diameter 3D printer according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of the auxiliary nozzle not being moved in place;
FIG. 3 is a cross-sectional view of FIG. 2;
FIG. 4 is a schematic view of the auxiliary nozzle moving into position;
FIG. 5 is a cross-sectional view of FIG. 4;
in the figure: 1. fixing the nozzle; 2. a left auxiliary nozzle portion; 3. the right auxiliary nozzle part.
Detailed Description
The invention will be further described with reference to the accompanying drawings and the detailed description below:
referring to fig. 1 to 5, the variable-diameter 3D printer extrusion head provided in this embodiment includes a fixed nozzle 1, the end of the fixed nozzle is a frustum-shaped nozzle discharging portion, that is, the end of the fixed nozzle 1 discharging portion is frustum-shaped, so as to extrude a printing material, but the outlet aperture of the fixed nozzle is unchangeable, in order to solve the technical problem that the outlet aperture of the fixed nozzle 1 discharging portion cannot be changed, the variable-diameter 3D printer extrusion head provided in this embodiment further includes an auxiliary nozzle installed on the periphery of the surface of the nozzle discharging portion, the nozzle discharging portion is capable of moving toward the outlet of the nozzle discharging portion under the driving of a driving member, wherein the dotted line in fig. 2 to 3 is the moving direction track of the auxiliary nozzle, an angle α is the moving angle between the auxiliary nozzle and the surface of the nozzle discharging portion, when the auxiliary nozzle moves to the position, the inner wall of the auxiliary nozzle is in a shape conforming to the surface of the nozzle discharging portion, that when the auxiliary nozzle moves to the position, the auxiliary nozzle is also frustum-shaped, so that when the auxiliary nozzle moves to the outlet aperture, the outlet aperture of the auxiliary nozzle is smaller than the circular nozzle discharging portion, and the diameter of the fixed nozzle, thus the printer, the outlet aperture of the auxiliary nozzle is smaller than the circular nozzle, and the diameter of the printer, which is smaller than the diameter of the fixed nozzle, so that.
Specifically, the auxiliary nozzle includes a left auxiliary nozzle portion 2 and a right auxiliary nozzle portion 3, which are symmetrically disposed on the outer periphery of the surface of the nozzle discharging portion along the axial direction of the nozzle discharging portion, and the left auxiliary nozzle portion 2 and the right auxiliary nozzle portion 3 are combined into a truncated cone-shaped auxiliary nozzle when they are moved into position. That is, the left auxiliary nozzle part 2 and the right auxiliary nozzle part 3 are identical in structure, and need not be distinguished from each other during actual installation and use, so as to facilitate quick installation and maintenance. Since the auxiliary nozzle is composed of the left auxiliary nozzle part 2 and the right auxiliary nozzle part 3, the auxiliary nozzle moving in place in the present application means that the left auxiliary nozzle part 2 and the right auxiliary nozzle part 3 are combined in place to form a complete circular nozzle.
Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes should fall within the scope of the claims of the present invention.
Claims (3)
1. The extrusion head of the 3D printer with the variable diameter comprises a fixed nozzle, wherein the tail end of the fixed nozzle is a nozzle discharging part in a shape of a circular truncated cone; when the auxiliary nozzle moves in place, the inner wall of the auxiliary nozzle is attached to the surface of the nozzle discharging part, and the caliber of the nozzle outlet is smaller than that of the nozzle discharging part.
2. The variable diameter 3D printer extrusion head of claim 1, wherein the auxiliary nozzle comprises a left auxiliary nozzle portion and a right auxiliary nozzle portion that are combined into a frustum-shaped auxiliary nozzle when the left and right auxiliary nozzle portions are moved into position.
3. The variable diameter 3D printer extrusion head of claim 2, wherein the left and right auxiliary nozzle portions are symmetrically disposed on a surface periphery of the nozzle discharging portion with an axial direction of the nozzle discharging portion as a center of symmetry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010234581.0A CN111391319A (en) | 2020-03-30 | 2020-03-30 | Variable-diameter 3D printer extrusion head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010234581.0A CN111391319A (en) | 2020-03-30 | 2020-03-30 | Variable-diameter 3D printer extrusion head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111391319A true CN111391319A (en) | 2020-07-10 |
Family
ID=71425866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010234581.0A Pending CN111391319A (en) | 2020-03-30 | 2020-03-30 | Variable-diameter 3D printer extrusion head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111391319A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113199751A (en) * | 2021-04-12 | 2021-08-03 | 福建江夏学院 | Automatic material taking device for 3D printing |
| CN113802192A (en) * | 2021-09-16 | 2021-12-17 | 海宁广源化纤有限公司 | Nozzle capable of being replaced in functional spinning process |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206106386U (en) * | 2016-10-20 | 2017-04-19 | 山东科技大学 | Variable bore extrusion nozzle of FDM type 3D printer |
-
2020
- 2020-03-30 CN CN202010234581.0A patent/CN111391319A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206106386U (en) * | 2016-10-20 | 2017-04-19 | 山东科技大学 | Variable bore extrusion nozzle of FDM type 3D printer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113199751A (en) * | 2021-04-12 | 2021-08-03 | 福建江夏学院 | Automatic material taking device for 3D printing |
| CN113802192A (en) * | 2021-09-16 | 2021-12-17 | 海宁广源化纤有限公司 | Nozzle capable of being replaced in functional spinning process |
| CN113802192B (en) * | 2021-09-16 | 2022-07-19 | 海宁广源化纤有限公司 | Nozzle capable of being replaced in functional spinning process |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200710 |
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| RJ01 | Rejection of invention patent application after publication |