CN114131927A - 3D is spout module and 3D printer for printer - Google Patents
3D is spout module and 3D printer for printer Download PDFInfo
- Publication number
- CN114131927A CN114131927A CN202111375649.8A CN202111375649A CN114131927A CN 114131927 A CN114131927 A CN 114131927A CN 202111375649 A CN202111375649 A CN 202111375649A CN 114131927 A CN114131927 A CN 114131927A
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- nozzle
- hole
- guide pipe
- heating
- printer
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- 238000010438 heat treatment Methods 0.000 claims abstract description 102
- 239000000463 material Substances 0.000 claims abstract description 84
- 239000012774 insulation material Substances 0.000 claims abstract description 7
- 230000017525 heat dissipation Effects 0.000 claims description 13
- 238000002955 isolation Methods 0.000 claims description 10
- 229910001369 Brass Inorganic materials 0.000 claims description 9
- 239000010951 brass Substances 0.000 claims description 9
- 230000009970 fire resistant effect Effects 0.000 claims description 5
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 3
- 238000004321 preservation Methods 0.000 abstract description 5
- 238000004026 adhesive bonding Methods 0.000 abstract 2
- 239000004696 Poly ether ether ketone Substances 0.000 description 10
- 229920002530 polyetherether ketone Polymers 0.000 description 10
- 239000007921 spray Substances 0.000 description 6
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 239000011810 insulating material Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229910018487 Ni—Cr Inorganic materials 0.000 description 3
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 238000010146 3D printing Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 239000004626 polylactic acid Substances 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005491 wire drawing Methods 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920000747 poly(lactic acid) Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
Images
Classifications
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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
-
- 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
- B29C64/295—Heating elements
-
- 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 3D printer and a nozzle module for the 3D printer, wherein the nozzle module for the 3D printer comprises: a nozzle; the heating assembly is sleeved on the nozzle; a groove is formed in one side, facing the nozzle, of the fixed seat, and the heating assembly is located in the groove; one end of the material guide pipe, facing the nozzle, is positioned between the nozzle and the heating assembly, one end of the material guide pipe, facing the nozzle, is abutted against the nozzle, and one end of the material guide pipe, facing away from the nozzle, penetrates through the heating assembly and the fixed seat and then extends to the outside; the material guiding pipe and the fixed seat are both made of heat insulation materials. The above-mentioned scheme that this application provided, directly overlap the cover with heating element and establish on the nozzle in order to realize zonulae occludens and efficient heat-conduction, because the passage is made by heat preservation and insulation material, avoided the last heat transfer who produces of heating element to the passage, cut off the route of heat loss, avoided the consumptive material to appear gluing at the export inner wall of passage to prevent that gluing is amazing and is few too much and the end cap phenomenon that arouses.
Description
Technical Field
The invention relates to the technical field of 3D printers, in particular to a nozzle module for a 3D printer and the 3D printer.
Background
3D printing (3D printing) technology is one of the high and new technologies rapidly developed in recent years, Fused Deposition Modeling (FDM) is widely introduced in the market, and is an industrial molding method, wherein filamentous hot melt materials are heated and melted, meanwhile, a three-dimensional spray head selectively coats the materials on a workbench under the control of a computer according to sectional profile information, a layer of section is formed after the materials are rapidly cooled, and the material is stacked layer by layer according to the sectional profile information instruction of the slices until the whole solid modeling is formed.
At present, polylactic acid (PLA) consumables are mainly extruded and transmitted to a nozzle suite in the market, and are stacked layer by layer according to a slicing instruction, and the polylactic acid is melted and continuously extruded to construct a 3D solid model. The current popular general 3D print head external member in the market generally uses the radiating block and the fan initiatively dispels the heat for the heat of choke pipe conduction, and under the normal condition, the consumptive material conveying melts to be extruded to being close nozzle department, nevertheless can be because the overheated end cap that leads to of print head, and unable normal printing.
The integral temperature of the printing head is higher due to the high temperature of the heating rod, consumable materials are softened and deformed or even melted before entering the nozzle, and the phenomena of end cap and wire drawing are caused, namely, the heat of the heating rod is transmitted upwards through the throat pipe, and under the condition that the heat cannot be dissipated through the fan, the heat is transmitted to the heat dissipation block and the stainless steel throat pipe, so that the consumable materials are adhered to the inner wall of the outlet of the polytetrafluoroethylene pipe in the stainless steel throat pipe, and the end cap is easy to occur due to less adhesive accumulation; meanwhile, the consumable materials softened in the pipe can also make the drawing action invalid, so that the wire drawing phenomenon is caused, the final precision of the printing model is influenced, the printer fault is caused, and the customer experience is seriously influenced.
Disclosure of Invention
In view of the above, it is necessary to provide a 3D printer head module and a 3D printer, which solve the problem that a conventional 3D printer head is easily clogged when used.
The invention provides a nozzle module for a 3D printer, which comprises:
a nozzle;
the heating assembly is sleeved on the nozzle;
a groove is formed in one side, facing the nozzle, of the fixed seat, and the heating assembly is located in the groove;
one end of the material guide pipe, facing the nozzle, is positioned between the nozzle and the heating assembly, one end of the material guide pipe, facing the nozzle, is abutted against the nozzle, and one end of the material guide pipe, facing away from the nozzle, penetrates through the heating assembly and the fixing seat and then extends to the outside; the material guide pipe and the fixed seat are both made of heat insulation materials.
According to the nozzle module for the 3D printer, the heating assembly is directly sleeved on the nozzle to realize tight connection and efficient heat conduction, and the material guide pipe is made of a heat-insulating material, so that heat generated on the heating assembly is prevented from being transferred into the material guide pipe, a path of heat loss is cut off, and consumable materials are prevented from being adhered to the inner wall of the outlet of the material guide pipe, so that the phenomenon of end cap caused by less and more adhered materials is prevented; simultaneously, because heating element sets up in the recess of fixing base, and the fixing base is also made by heat preservation insulation material to the diffusion of the heat that produces on the heating element can be reduced, the heat that produces on the heating element concentrates on being used in on the nozzle.
In one embodiment, the heating assembly comprises a shell, a heating body, a heating wire and a fireproof insulating layer, wherein the shell and the heating wire are sleeved on the heating body, the heating wire is positioned in the shell, gaps are respectively arranged between the shell and the heating body and the heating wire, and the fireproof insulating layer is arranged between the heating body and the heating wire;
the shell and the heating body are located in the groove, one end of the material guide pipe is located in the heating body, and the other end of the material guide pipe extends to one end, far away from the nozzle, of the material guide pipe after penetrating through the heating body and the fixing seat.
In one embodiment, the shell is provided with a first through hole along the axial direction of the material guide pipe, one end of the heating body facing the nozzle is provided with an internal thread section, one end of the heating body far away from the nozzle is provided with a boss along the circumferential direction, the boss is provided with a second through hole along the axial direction of the material guide pipe, the second through hole is communicated with an inner hole of the internal thread section, and the diameter of the second through hole is smaller than that of the inner hole of the internal thread section;
the shell with the boss all is located in the recess, the top of shell with the bottom surface butt of boss, the passage orientation the one end of nozzle is provided with the arch along circumference, the diameter of the circle that the arch formed is greater than the diameter of second through-hole, just the diameter of the circle that the arch formed is less than the internal diameter of internal thread section, the arch is located in the hole of internal thread section, the passage is kept away from bellied one end passes in proper order the second through-hole extend to the outside behind the fixing base, material entering end and internal thread section threaded connection on the nozzle, just material entering end on the nozzle with protruding butt.
In one embodiment, the fixing seat is provided with a third through hole along the axial direction of the material guide pipe, and one end of the material guide pipe, which is far away from the protrusion, sequentially passes through the second through hole and the third through hole and then extends to the outside.
In one embodiment, the material guide pipe further comprises a heat dissipation block and a connecting screw, wherein a sixth through hole is formed in the heat dissipation block along the axial direction of the material guide pipe, and a fourth through hole and a fifth through hole are formed in the fixed seat;
the radiating block sets up the top of fixing base, two the connecting screw from the bottom up corresponds to pass the fourth through-hole behind the fifth through-hole with radiating block threaded connection, the passage is kept away from bellied one end is passed in proper order the second through-hole extend behind the third through-hole on the passage in the sixth through-hole.
In one embodiment, a first guide hole is arranged on one side, facing the nozzle, of the fourth through hole, and a second guide hole is arranged on one side, facing the nozzle, of the fifth through hole;
the diameter of the first guide hole towards one side of the nozzle is larger than that of the first guide hole towards one side of the fourth through hole, and the diameter of the second guide hole towards one side of the nozzle is larger than that of the second guide hole towards one side of the fifth through hole.
In one embodiment, the heat sink further comprises an isolation pipe, the isolation pipe is sleeved on the connecting screw, and the isolation pipe is located between the fixed seat and the heat dissipation block.
In one embodiment, a first notch is formed in the side surface of the shell, a second notch is formed in the side surface of the fixing seat, and a lead wire on the heating wire penetrates through the first notch and then extends into the second notch.
In one embodiment, the heating body and the nozzle are made of brass.
The invention further provides a 3D printer, which comprises the spray head module for the 3D printer, wherein the spray head module for the 3D printer is arranged on the 3D printer body.
Drawings
Fig. 1 is a schematic structural diagram of a nozzle module for a 3D printer according to an embodiment of the present invention;
FIG. 2 is an exploded view of FIG. 1;
FIG. 3 is a partial schematic view of FIG. 1;
FIG. 4 is a schematic view of a heating assembly according to an embodiment of the present invention;
FIG. 5 is a schematic view of the fixing base shown in FIG. 1;
FIG. 6 is yet another schematic view of FIG. 5;
FIG. 7 is a partial cross-sectional view of FIG. 1;
fig. 8 is a schematic view of the heating body of fig. 1.
The figures are labeled as follows:
1. a nozzle; 2. a housing; 201. a first through hole; 202. a first notch; 3. a heating body; 301. an internal thread section; 302. a boss; 303. a second through hole; 4. heating wires; 5. a material guide pipe; 501. a protrusion; 6. a fixed seat; 601. a second notch; 602. a third through hole; 603. a fourth via hole; 6031. a first guide hole; 604. a fifth through hole; 6041. a second guide hole; 605. a groove; 7. a heat dissipating block; 701. a sixth through hole; 8. a connecting screw; 9. and (4) isolating the pipe.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "horizontal", "inner", "axial", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "horizontal," "upper," "lower," and the like are for illustrative purposes only and do not represent the only embodiments.
As shown in fig. 1 and fig. 7, in an embodiment of the present invention, there is provided a nozzle module for a 3D printer, including: nozzle 1, heating element, fixing base 6 and passage 5, wherein, the heating element cover is established on nozzle 1, fixing base 6 is provided with recess 605 towards one side of nozzle 1, heating element is located recess 605, passage 5 is located between nozzle 1 and the heating element towards the one end of nozzle 1, and passage 5 is towards the one end and the nozzle 1 butt of nozzle 1, the one end that nozzle 1 was kept away from to passage 5 extends to the outside after passing heating element and fixing base 6, and passage 5 and fixing base 6 are made by heat preservation and insulation material.
Specifically, the nozzle 1 is a brass nozzle, the material guide pipe 5 is made of polytetrafluoroethylene (PTFE/Teflon), and the thermal conductivity of the material guide pipe is 0.24W/(m.K); the density was 2.2g/cm3(ii) a Can bear positive pressure of 1.6Mpa and negative pressure of 77 Kpa; can be normally used at-60 ℃ to +260 ℃; the fixed seat 6 is made of polyether ether ketone (PEEK), has physical and chemical properties such as processability, good mechanical property, high temperature resistance, chemical corrosion resistance and the like, and can be used as a high-temperature-resistant structural material and an electrical insulating material; the thermal conductivity is 1.73W/(m.K); the density is 1.26-1.38 g/cm3(23 ℃); melting point 343 deg.C, softening point 168 deg.C; the tensile strength is 132-148 MPa; the polyetheretherketone machined part is used as a fixed seat, and under the condition of being tightly combined with the heating component, the Polyetheretherketone (PEEK) fixed seat has low thermal conductivity and overall temperature of about 87 ℃, so that the heat insulation effect of the overall structure is improved.
By adopting the technical scheme, the heating assembly is directly sleeved on the nozzle to realize tight connection and high-efficiency heat conduction, and the material guide pipe is made of heat-insulating materials, so that heat generated on the heating assembly is prevented from being transferred into the material guide pipe, a path of heat loss is cut off, and consumable materials are prevented from being adhered to the inner wall of the outlet of the material guide pipe, so that the phenomenon of end cap caused by less and more adhesive accumulation is prevented; simultaneously, because heating element sets up in the recess of fixing base, and the fixing base is also made by heat preservation insulation material to the diffusion of the heat that produces on the heating element can be reduced, the heat that produces on the heating element concentrates on being used in on the nozzle.
In some embodiments, as shown in fig. 4 in combination with fig. 2, the heating assembly of the present application includes a housing 2, a heating body 3, a heating wire 4, and a fire-resistant insulating layer, the fire-resistant insulating layer is made of magnesium oxide powder, the housing 2 and the heating wire 4 are both sleeved on the heating body 3, the heating wire 4 is located inside the housing 2, gaps are respectively provided between the housing 2 and the heating body 3 and the heating wire 4, and the fire-resistant insulating layer is arranged between the heating body 3 and the heating wire 4; the shell 2 and the heating body 3 are both located in the groove 605, one end of the material guide pipe 5 is located in the heating body 3, the other end of the material guide pipe penetrates through the heating body 3 and the fixing seat 6 and then extends towards one end away from the nozzle 1, and the material inlet end on the nozzle 1 is in threaded connection with the heating body 3.
Specifically, the shell 2 is a stainless steel shell, the thermal conductivity of the stainless steel shell is 16W/(m · K), and the stainless steel shell has good performances such as corrosion resistance, heat resistance, corrosion resistance and the like, and can play a good role in heat preservation; the heating body 3 is a brass heating body, the heat conductivity of the brass heating body is 397W/(m.K), the ductility is good, and the heat conductivity and the electric conductivity are high; the heating wire 4 is made of nickel-chromium wires 2080, the strength of the heating wire at high temperature is high, and the heating wire is cooled down after long-term use, so that the material cannot become brittle; the nickel-chromium wires 2080 are distributed on the outer ring of the brass heating body in a spiral mode, and the nickel-chromium wires 2080 are not in contact with the brass heating body; when the material guide pipe is used, the heating wire 4 is driven to generate heat through external current, the heating wire 4 generates heat and transfers the heat to the heating body 3 through the magnesium oxide layer, and when the material flows into the material inlet end of the nozzle 1 from the material guide pipe 5, the material is rapidly heated and melted by the heating body 3 and finally flows out of the nozzle 1.
In some embodiments, as shown in fig. 4 in combination with fig. 3 and 8, the housing 2 of the present application is provided with a first through hole 201 along the axial direction of the material guiding tube 5, one end of the heating body 3 facing the nozzle 1 is provided with an internal thread section 301, one end of the heating body 3 away from the nozzle 1 is provided with a boss 302 along the circumferential direction, the boss 302 is provided with a second through hole 303 along the axial direction of the material guiding tube 5, the second through hole 303 is communicated with an inner hole of the internal thread section 301, and the diameter of the second through hole 303 is smaller than that of the inner hole of the internal thread section 301; the upper portion of the outer shell 2 is abutted to the bottom surface of the boss 302, a protrusion 501 is circumferentially arranged at one end, facing the nozzle 1, of the material guide pipe 5, the diameter of a circle formed by the protrusion 501 is larger than that of the second through hole 303, the diameter of the circle formed by the protrusion 501 is smaller than that of the internal thread section 301, the protrusion 501 is located in the inner hole of the internal thread section 301, one end, far away from the protrusion 501, of the material guide pipe 5 penetrates through the second through hole 303 and then extends to the outside, a material inlet end on the nozzle 1 is in threaded connection with the internal thread section 301, and a material inlet end on the nozzle 1 is abutted to the protrusion 501.
When the material guide pipe is used, the material guide pipe 5 penetrates through the internal thread section 301 from bottom to top, the diameter of a circle formed by the protrusion 501 is larger than that of the second through hole 303, and the diameter of the circle formed by the protrusion 501 is smaller than that of the internal thread section 301, so that the protrusion 501 is located in the internal thread section 301 at the moment, one end, far away from the protrusion 501, of the material guide pipe 5 penetrates through the second through hole 303 and extends to the outside, then the material inlet end on the nozzle 1 is in threaded connection with the internal thread section 301, the material inlet end on the nozzle 1 is abutted to the protrusion 501, and the protrusion 501 is clamped by the extrusion of the material inlet end on the nozzle 1, so that the phenomenon that consumables overflow occurs when the consumables flow into the nozzle 1 from the material guide pipe 5 can be avoided.
In some embodiments, as shown in fig. 1 in combination with fig. 2, 5 and 6, the fixing base 6 in the present application is provided with a third through hole 602 along the axial direction of the guide tube 5, and one end of the guide tube 5, which is far away from the protrusion 501, sequentially passes through the second through hole 303 and the third through hole 602 and then extends to the outside.
The fixing seat 6 in the embodiment is made of polyether ether ketone (PEEK), has physical and chemical properties such as processability, good mechanical properties, high temperature resistance, chemical corrosion resistance and the like, and can be used as a high-temperature-resistant structural material and an electrical insulating material; the thermal conductivity is 1.73W/(m.K); the density is 1.26-1.38 g/cm3(23 ℃); melting point 343 deg.C, softening point 168 deg.C; the tensile strength is 132-148 MPa; the polyetheretherketone machined part is used as a fixed seat, and under the condition of being tightly combined with the shell 2 and the boss 302, the Polyetheretherketone (PEEK) fixed seat has low thermal conductivity and overall temperature of about 87 ℃, so that the heat insulation effect of the overall structure is improved.
In some embodiments, as shown in fig. 2 in combination with fig. 5, the spray head module for a 3D printer further includes a heat dissipation block 7 and a connection screw 8, wherein a sixth through hole 701 is formed on the heat dissipation block 7 along an axial direction of the material guiding pipe 5, a fourth through hole 603 and a fifth through hole 604 are formed on the fixing base 6, and the fourth through hole 603 and the fifth through hole 604 are respectively located at two sides of the third through hole 602; the heat dissipation block 7 is arranged above the fixed seat 6, the two connecting screws 8 correspondingly penetrate through the fourth through hole 603 and the fifth through hole 604 from bottom to top and then are in threaded connection with the heat dissipation block 7, and one end, far away from the protrusion 501, of the material guide pipe 5 sequentially penetrates through the second through hole 303 and the third through hole 602 and then extends into the sixth through hole 701. The temperature of the material guide pipe 5 is further reduced due to the arrangement of the heat dissipation block 7, and the phenomenon that the consumable materials in the material guide pipe 5 are drawn due to overhigh temperature is avoided.
In some embodiments, as shown in fig. 6, the fourth through hole 603 in the present application is provided with a first guide hole 6031 on a side facing the nozzle 1, and the fifth through hole 604 is provided with a second guide hole 6041 on a side facing the nozzle 1; the diameter of the first guide hole 6031 on the side facing the nozzle 1 is larger than the diameter of the first guide hole 6031 on the side facing the fourth through hole 603, and the diameter of the second guide hole 6041 on the side facing the nozzle 1 is larger than the diameter of the second guide hole 6041 on the side facing the fifth through hole 604.
The first and second guiding holes 6031 and 6041 are designed such that the connecting screw 8 can only be inserted into the corresponding fourth and fifth through holes 603 and 604 in the correct direction, thereby preventing mis-insertion.
In some embodiments, as shown in fig. 1 and in combination with fig. 2, the nozzle module for a 3D printer further includes an isolation tube 9, the isolation tube 9 is sleeved on the connection screw 8, and the isolation tube 9 is located between the fixing seat 6 and the heat dissipation block 7. The setting of isolation pipe 9, convenient with separating between fixing base 6 and the radiating block 7.
In some embodiments, as shown in fig. 4 in combination with fig. 5, the lateral surface of the outer shell 2 in the present application is provided with a first notch 202, the lateral surface of the fixing base 6 is provided with a second notch 601, and the lead wire on the heating wire 4 passes through the first notch 202 and then extends into the second notch 601. The first gap 202 and the second gap 601 are arranged to facilitate connection of the lead wires on the heating wire 4 with external wires.
In some embodiments, the heating body 3 and the nozzle 1 are made of brass, the heat conductivity of the brass is 397W/(m.K), the heat conduction efficiency is high, and the heating body 3 is directly connected to the nozzle 1 through threads, so that the structure is simpler and more reliable.
The invention further provides a 3D printer, which comprises the spray head module for the 3D printer, wherein the spray head module for the 3D printer is arranged on the 3D printer body.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides a 3D is shower nozzle module for printer which characterized in that includes:
a nozzle (1);
the heating assembly is sleeved on the nozzle (1);
a groove (605) is formed in one side, facing the nozzle (1), of the fixing seat (6), and the heating assembly is located in the groove (605);
the end, facing the nozzle (1), of the material guide pipe (5) is located between the nozzle (1) and the heating assembly, the end, facing the nozzle (1), of the material guide pipe (5) is abutted to the nozzle (1), and the end, far away from the nozzle (1), of the material guide pipe (5) penetrates through the heating assembly and the fixing seat (6) and then extends to the outside; the material guide pipe (5) and the fixed seat (6) are both made of heat insulation materials.
2. The nozzle module for the 3D printer according to claim 1, wherein the heating assembly comprises a shell (2), a heating body (3), a heating wire (4) and a fire-resistant insulating layer, the shell (2) and the heating wire (4) are sleeved on the heating body (3), the heating wire (4) is located inside the shell (2), gaps are respectively arranged between the shell (2) and the heating body (3) and the heating wire (4), and the fire-resistant insulating layer is arranged between the heating body (3) and the heating wire (4);
the shell (2) and the heating body (3) are both positioned in the groove (605), one end of the material guide pipe (5) is positioned in the heating body (3), and the other end of the material guide pipe penetrates through the heating body (3) and the fixing seat (6) and then extends to the end far away from the nozzle (1).
3. The nozzle module for the 3D printer according to claim 2, wherein the housing (2) is provided with a first through hole (201) along the axial direction of the material guiding pipe (5), one end of the heating body (3) facing the nozzle (1) is provided with an internal thread section (301), one end of the heating body (3) far away from the nozzle (1) is provided with a boss (302) along the circumferential direction, a second through hole (303) is axially arranged on the boss (302) along the material guiding pipe (5), the second through hole (303) is communicated with an inner hole of the internal thread section (301), and the diameter of the second through hole (303) is smaller than that of the inner hole of the internal thread section (301);
the housing (2) and the boss (302) are both located within the recess (605), the upper part of the shell (2) is abutted against the bottom surface of the boss (302), one end of the material guide pipe (5) facing the nozzle (1) is provided with a bulge (501) along the circumferential direction, the diameter of a circle formed by the protrusion (501) is larger than that of the second through hole (303), and the diameter of the circle formed by the bulge (501) is smaller than the inner diameter of the internal thread section (301), the bulge (501) is positioned in an inner hole of the internal thread section (301), one end of the material guide pipe (5) far away from the bulge (501) sequentially penetrates through the second through hole (303) and the fixed seat (6) and then extends to the outside, the material inlet end of the nozzle (1) is in threaded connection with the internal thread section (301), and the material inlet end on the nozzle (1) is abutted with the projection (501).
4. The nozzle module for the 3D printer according to claim 3, wherein the fixing seat (6) is provided with a third through hole (602) along the axial direction of the material guiding pipe (5), and one end of the material guiding pipe (5) far away from the protrusion (501) sequentially passes through the second through hole (303) and the third through hole (602) and then extends to the outside.
5. The nozzle module for the 3D printer according to claim 3, further comprising a heat dissipation block (7) and a connection screw (8), wherein a sixth through hole (701) is formed in the heat dissipation block (7) along the axial direction of the material guide pipe (5), and a fourth through hole (603) and a fifth through hole (604) are formed in the fixing seat (6);
the radiating block (7) is arranged above the fixed seat (6), the connecting screw (8) correspondingly penetrates from bottom to top through the fourth through hole (603), the rear part of the fifth through hole (604) is connected with the radiating block (7) in a threaded manner, the guide pipe (5) is far away from one end of the protrusion (501) penetrates through the second through hole (303) in sequence, and the rear part of the third through hole (602) on the guide pipe (5) extends into the sixth through hole (701).
6. The nozzle module for the 3D printer according to claim 5, wherein the fourth through hole (603) is provided with a first guide hole (6031) at a side facing the nozzle (1), and the fifth through hole (604) is provided with a second guide hole (6041) at a side facing the nozzle (1);
the diameter of first guiding hole (6031) orientation nozzle (1) one side is greater than the diameter of first guiding hole (6031) orientation fourth through-hole (603) one side, the diameter of second guiding hole (6041) orientation nozzle (1) one side is greater than the diameter of second guiding hole (6041) orientation fifth through-hole (604) one side.
7. The nozzle module for the 3D printer according to claim 5, further comprising an isolation tube (9), wherein the isolation tube (9) is sleeved on the connection screw (8), and the isolation tube (9) is located between the fixing seat (6) and the heat dissipation block (7).
8. The nozzle module for the 3D printer according to claim 2, wherein a first notch (202) is formed in the side surface of the outer shell (2), a second notch (601) is formed in the side surface of the fixed seat (6), and a lead wire on the heating wire (4) penetrates through the first notch (202) and then extends into the second notch (601).
9. The nozzle module for a 3D printer according to claim 2, characterized in that the heating body (3) and the nozzle (1) are both made of brass.
10. A3D printer, characterized by comprising the jet head module for the 3D printer according to any one of claims 1 to 9, wherein the jet head module for the 3D printer is mounted on a 3D printer body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111375649.8A CN114131927A (en) | 2021-11-19 | 2021-11-19 | 3D is spout module and 3D printer for printer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111375649.8A CN114131927A (en) | 2021-11-19 | 2021-11-19 | 3D is spout module and 3D printer for printer |
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| CN114131927A true CN114131927A (en) | 2022-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111375649.8A Pending CN114131927A (en) | 2021-11-19 | 2021-11-19 | 3D is spout module and 3D printer for printer |
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| CN104149343A (en) * | 2014-07-29 | 2014-11-19 | 厦门达天电子科技有限公司 | Hot-melting material extruding device by use of flexible guide pipe |
| WO2016035057A1 (en) * | 2014-09-05 | 2016-03-10 | Navitracer Polska Sp. Z O.O. | Three-dimensional printing hotend and method of fitting such hotend |
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Application publication date: 20220304 |