CN106515008A - Three-dimensional printing head and three-dimensional printing machine provided with same - Google Patents
Three-dimensional printing head and three-dimensional printing machine provided with same Download PDFInfo
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- CN106515008A CN106515008A CN201611200075.XA CN201611200075A CN106515008A CN 106515008 A CN106515008 A CN 106515008A CN 201611200075 A CN201611200075 A CN 201611200075A CN 106515008 A CN106515008 A CN 106515008A
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- Prior art keywords
- nozzle
- printing head
- radiating tube
- feed pipe
- pipe
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Classifications
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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)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
Abstract
The invention relates to a three-dimensional printing head. The three-dimensional printing head comprises a cooling pipe comprising a first end and a second end, a spray nozzle and a material feeding pipe, wherein one end of the spray nozzle is inserted and arranged in the cooling pipe, and the other end of the spray nozzle protrudes and stretches out of the second end of the cooling pipe; the material feeding pipe is inserted and arranged in the spray nozzle, one end of the material feeding pipe stretches out of the spray nozzle and protrudes and stretches out of the first end of the cooling pipe, and the other end of the material feeding pipe protrudes and stretches out of the second end of the cooling pipe and is contained in the spray nozzle; and the spray nozzle is provided with a material feeding hole, and the material feeding pipe is communicated with the material feeding hole. According to the above three-dimensional printing head, compared with the prior art that a spray nozzle structure is communicated with the material feeding pipe through a throat pipe, the spray nozzle in the three-dimensional printing head integrates the throat pipe and the spray nozzle structure in the prior art, and therefore gaps between the material feeding pipe and the throat pipe as well as between the throat pipe and the spray nozzle structure are eliminated, and finally, it can be avoided that a printing material forms expanded nodules at the seam position of the material feeding pipe and the throat pipe and forms residues at the seam position of the throat pipe and the spray nozzle structure, and consequently the three-dimensional printing head is blocked, and normal work of a three-dimensional printing machine provided with the three-dimensional printing head is affected.
Description
Technical field
The present invention relates to 3D printing field, more particularly to a kind of 3 D-printing head and the three-dimensional of the 3 D-printing head is provided with
Printer.
Background technology
3D printing be one kind based on mathematical model file, with powdery metal or plastics etc. can jointing material, lead to
Carry out the technology of constructed object after the mode for successively printing.With the increasingly mature popularization of 3D printing technique, its technology jewelry,
Footwear, industrial design, building, engineering and construction (AEC), automobile, Aero-Space, dentistry and medical industries, education, geography information
System, civil engineering, gun and other field have and are increasingly widely applied.
FDM (Fused Deposition Modeling fusion sediment models) three-dimensional printer is current cost of implementation ratio
Less expensive three-dimensional printer, is most likely at consumption market and realizes large-scale application.But at present, this three-dimensional printer due to
Fault of construction, half softener material at printhead inner-seam form tubercle and cause printhead to block, so as to affect printer
Normal work.Additionally, the problem of blocking could be repaired sometimes for printhead is disassembled completely and it is necessary in printhead plus
Could operate in the state of heat.And as the printhead temperature for heating is more than 200 degrees Celsius, with high danger, so
This task cannot almost completed by ordinary consumer, so as to become one of significant obstacle of 3D printing popularization and application.
The content of the invention
Based on this, it is necessary to hold susceptible to plugging problem for the printhead of three-dimensional printer, there is provided one kind can avoid printing
The 3 D-printing head of head blocking and it is provided with the printer of the 3 D-printing head.
A kind of 3 D-printing head, including：
Radiating tube, including first end and the second end；
Nozzle, described nozzle one end are inserted in the radiating tube, and the other end of the nozzle stretches out the radiating tube
Second end outside；And
Feed pipe, is inserted in the nozzle, and one end of the feed pipe is stretched out the nozzle and stretches out the radiating tube
The first end, the other end stretches out second end of the radiating tube and is contained in the nozzle；
Wherein, the nozzle offers feedhole, and the feed pipe is connected with the feedhole.
Above-mentioned 3 D-printing head, printed material can be directly entered the feedhole of nozzle from the feed pipe for be inserted in nozzle,
Further extrude from feedhole and printed.As nozzle is directly inserted in radiating tube and is sheathed on feed pipe, and by sending
Material hole is directly connected with feed pipe, therefore compared in prior art, nozzle arrangements are connected with feed pipe by trunnion and make to send
Between expects pipe and trunnion, trunnion and nozzle arrangements have gap, the nozzle in the application be integrated with trunnion of the prior art with
Nozzle arrangements, so as to eliminate the gap between feed pipe and trunnion, trunnion and nozzle arrangements, can finally avoid printed material from existing
Feed pipe in the seam crossing of trunnion formed expand tubercle and trunnion and nozzle arrangements seam crossing form residue and cause this three
Dimension printhead blocks and affects to be provided with the three-dimensional printer normal work of the 3 D-printing head.
Wherein in one embodiment, the nozzle is additionally provided with
Receiving hole, described feed pipe one end is inserted in the receiving hole to connect with the feedhole.
Wherein in one embodiment, the 3 D-printing head also includes joint, and the joint is inserted in the radiating tube
First end and be sheathed on the feed pipe, the joint is held in described near the one end at second end of the radiating tube
Nozzle.
Wherein in one embodiment, the joint is provided around the close of the feed pipe near one end of the radiating tube
Seal, the both sides of the sealing ring are in close contact with the nozzle with the radiating tube respectively.
Wherein in one embodiment, the 3 D-printing head also includes heat block, and the heat block is sheathed on the spray
Mouth stretches out one end of the radiating tube.
Wherein in one embodiment, the nozzle includes not being contained in the blocking in the radiating tube and the heat block
Portion, the diameter of the blocking unit is less than other regions and side wall is in thin wall shape structure.
Wherein in one embodiment, the radiating tube lateral wall is provided with radiating fin.
Wherein in one embodiment, multiple radiating fins are axially extending along the radiating tube.
A kind of three-dimensional printer, including the 3 D-printing head that fuselage is above-mentioned, the 3 D-printing head are installed on the fuselage
On.
Wherein in one embodiment, the three-dimensional printer also includes radiator fan, the radiator fan and described three
Dimension printhead interval setting.
Description of the drawings
Fig. 1 is the structural representation of the 3 D-printing head of an embodiment.
Specific embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give the preferred embodiment of the present invention.But, the present invention can be realized in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose for providing these embodiments is to make the understanding to the disclosure more saturating
It is thorough comprehensive.
It should be noted that when element is referred to as " being fixed on " another element, it can directly on another element
Or can also there is element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or may be simultaneously present centering elements.Term as used herein " vertical ", " level ", " left side ",
" right side " and similar statement are for illustrative purposes only.
Unless otherwise defined, all of technology used herein and scientific terminology and the technical field for belonging to the present invention
The implication that technical staff is generally understood that is identical.The term for being used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that of the invention in limiting.Term as used herein " and/or " including one or more phases
The arbitrary and all of combination of the Listed Items of pass.
As shown in figure 1, a kind of 3 D-printing head 100 of this preferred embodiment, including radiating tube 10, nozzle 20 and feed pipe
30, the 3 D-printing head 100 is used to be installed on three-dimensional printer to print required product.
Radiating tube 10 includes first end and the second end, and 20 one end of nozzle is inserted in radiating tube 10, and the other end stretches out scattered
Outside second end of heat pipe 10.Feed pipe 30 is inserted in nozzle 20, and one end is stretched out nozzle 20 and stretches out the first end of radiating tube 10,
The other end stretches out the second end of radiating tube 10 and is contained in nozzle 20.Wherein, nozzle 20 offers feedhole 22, feed pipe
30 are connected with the feedhole 22.
Above-mentioned 3 D-printing head 100, printed material can be directly entered nozzle 20 from the feed pipe 30 for being inserted in nozzle 20
Feedhole 22, and then extrude from feedhole 22 and printed.As nozzle 20 is directly inserted in radiating tube 10 and is arranged
In feed pipe 30, and directly connected with feed pipe 30 by feedhole 22, therefore compared in prior art, nozzle arrangements pass through
Trunnion is connected with feed pipe and makes to have gap between feed pipe and trunnion, trunnion and nozzle arrangements, the nozzle 20 in the application
Trunnion of the prior art and nozzle arrangements are integrated with, so as to eliminate between feed pipe and trunnion, trunnion and nozzle arrangements
Gap, can finally avoid printed material from being formed in the seam crossing of trunnion in feed pipe and expand tubercle and in trunnion and nozzle arrangements
Seam crossing forms residue and causes the 3 D-printing head 100 to block and affect to be provided with the three-dimensional printer of the 3 D-printing head 100
Normal work.
In the present embodiment, feed pipe 30 is made using the polytetrafluoro material with high temperature resistant and self-lubricating property, so as to
With longer service life and higher job stability.Nozzle 20 be formed in one structure and only two ends be provided with opening and
Feed pipe 30 is sheathed on, so as to avoid tubercle being expanded because gap causes printed material to be formed.
Please continue to refer to Fig. 1, nozzle 20 is additionally provided with
30 one end of expects pipe is inserted in receiving hole to connect with feedhole 22, and the internal diameter size phase of the diameter of feedhole 22 and feed pipe 30
Together.Thus, feed pipe 30 is contained in nozzle 20 by receiving hole, the printed material in feed pipe 30 is directly entered feedhole 22
It is interior, cause to form gap between feed pipe 30 and trunnion and cause printed material to be formed and expand tubercle so as to avoid setting trunnion
And the seam crossing of trunnion and nozzle arrangements forms residue and causes the 3 D-printing head 100 to block.
3 D-printing head 100 also includes joint 40, and joint 40 is inserted in the first end of radiating tube 10 and is sheathed on feed pipe
30, and the inwall of the outer wall of the joint 40 and radiating tube 10 coordinates, joint 40 is supported near the one end at the second end of radiating tube 10
In nozzle 20.Thus, the feed pipe 30 is fixed on radiating tube 10 by joint 40, and valve nozzles 20 are near radiating tube 10
One end of one end, so as to air-tight state is formed between 20 inwall of 30 outer wall of feed pipe and nozzle, so that the printing material after fusing
Material will not flow down automatically in the case where thrust is not extruded.
When non-air-tight state is between 20 inwall of 30 outer wall of feed pipe and nozzle, the printed material after fusing can be in weight
Automatically flow downward in the presence of power, when the 3 D-printing head 100 is close to uniform motion, the surface more light of the product of printing
It is sliding.But where print speed changes, due to melt printed material the rate of outflow it is uncontrollable, therefore with three-dimensional beat
The speed of the extrusion printed material of 3 D-printing head 100 of print 100 movement velocitys matching can be with the rate of outflow of printed material not
Symbol, so as to there is the rough phenomenon of printed product in nonprinting region formation wire drawing and where changing in print speed.Cause
This, due to forming air-tight state between 20 inwall of 30 outer wall of feed pipe and nozzle, so as to printed material can be avoided automatically to flow out
Cause the speed for printed material being extruded with 3 D-printing head 100 not to be inconsistent, finally avoid forming wire drawing in nonprinting region and beating
There is the rough phenomenon of printed product where changing in print-out rate.
Further, joint 40 is provided around the sealing ring 50 of feed pipe 30, sealing ring 50 near one end of radiating tube 10
Both sides be in close contact with nozzle 20 with radiating tube 10 respectively.In the present embodiment, sealing ring 50 is rubber ring.Thus, can enter
Space between the outer wall and the inwall of nozzle 20 of one step sealing feed pipe 30, it is ensured that the printed material after fusing is without extrusion
Will not flow down automatically in the case of thrust.
3 D-printing head 100 also includes heat block 60, and heat block 60 is sheathed on one end that nozzle 20 stretches out radiating tube 10, with
Printed material in 20 one end of heated nozzle, is in printed material and is completely melt state.
In the art, it is the root for causing printhead to block to melt and be in the printed material of half soft state.It is different
Can extrude from nozzle 20 easily in the state of being completely melt, fully hard state when printed material diameter less than feed pipe 30
Diameter and can smoothly reach nozzle 20 without resulting in blockage, thrust of the printed material under half soft state in three-dimensional printer
Under, its shape can change but not possess mobility, therefore easily expands tubercle in seam crossing formation and form blocking.
Thus, nozzle 20 includes not being contained in the blocking unit 24 in radiating tube 10 and heat block 60, the diameter of blocking unit 24
Less than other regions and side wall be in thin wall shape structure, so as to heat transfer can be blocked, it is to avoid the nozzle 20 in heat block 60 is received
To heat transfer cause to the nozzle 20 and feed pipe 30 that are located in radiating tube 10 printed material in feed pipe 30 due to
It is heated and is fused into half soft state of long range.
Further, since the printed material in blocking unit 24 is due to being located at cold and hot joining place, therefore it is in semi-molten state and makes
Confined space is formed in feed pipe 30, the automatic flow down of the printed material in feed pipe 30 is further avoided but is beaten in three-dimensional
Flow under the push effect of print machine, finally overcome nonprinting region to form wire drawing and occur not only where print speed changes
The problem of sliding phenomenon.
In one embodiment, 10 lateral wall of radiating tube is provided with radiating fin 12, and multiple radiating fins 12 axially prolong along radiating tube 10
Stretch, so as to the heat in auxiliary feeding pipe 30 is distributed, thus, radiating tube 10 is in addition to playing a supporting role, can also give nozzle 20
Radiate to reduce the temperature of the printed material in nozzle 20 and radiating tube 10, it is to avoid printed material softens in radiating tube 10.
Above-mentioned 3 D-printing head 100, nozzle 20 are directly sleeved on feed pipe 30 of the one end in radiating tube 10, nozzle 20
Feedhole 22 directly connect with feed pipe 30, cause the material for melting so as to trunnion need not be arranged from trunnion and feed pipe 30
Between cause and expand tubercle and result in blockage, and overflow and be trapped in gap in causing the gap between trunnion and nozzle 20, and
Go bad the printed material extrusion to form residue and affect to melt in long-term heating rear oxidation.Also, the setting of nozzle blocking unit can
The printed material of half soft state of long range is avoided the formation of, the problem of the blocking of 3 D-printing head 100 is finally overcome.Meanwhile,
Seal 50 can make the 3 D-printing head 100 be internally formed closing knot with the printed material in molten state in blocking unit 24
Structure, so as to avoid the printed material for melting automatic flow down under gravity.Thus, the 3 D-printing head 100 can overcome
Occur the problem of rough phenomenon where changing in nonprinting region formation wire drawing and in print speed, be greatly improved
Print quality and job stability.
As shown in figure 1, a kind of three-dimensional printer (not shown) of this preferred embodiment, including fuselage and above-mentioned three-dimensional are beaten
Print 100.
Specifically, 3 D-printing head 100 is installed on fuselage, and print job can be carried out under the control of fuselage.Three-dimensional is beaten
Print machine also includes radiator fan (not shown), and radiator fan is with 100 interval setting of 3 D-printing head and corresponding with radiating tube 10 sets
Put, when startup nozzle 20 carries out print job, you can while starting radiator fan, the radiator fan can produce air-flow and take away radiating
The heat of pipe 10 to improve the radiating effect of radiating tube 10, so as to further reduce the temperature of the feed pipe 30 in radiating tube 10
Degree, it is to avoid the printed material in feed pipe 30 softens and results in blockage.
Above-mentioned three-dimensional printer, by being provided with 3 D-printing head 100, it is to avoid the product for printing wire drawing occurs and printing
Speed easily occur where changing it is rough, with higher print quality and higher job stability, so as to further
Eliminate the popularization of 3D printing and apply obstacle.
Each technical characteristic of embodiment described above arbitrarily can be combined, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more concrete and detailed, but and
Therefore can not be construed as limiting the scope of the patent.It should be pointed out that for one of ordinary skill in the art comes
Say, without departing from the inventive concept of the premise, some deformations and improvement can also be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (10)
1. a kind of 3 D-printing head, it is characterised in that include：
Radiating tube, including first end and the second end；
Nozzle, described nozzle one end are inserted in the radiating tube, and the other end of the nozzle stretches out the institute of the radiating tube
State outside the second end；And
Feed pipe, is inserted in the nozzle, and one end of the feed pipe is stretched out the nozzle and stretches out the institute of the radiating tube
First end is stated, the other end stretches out second end of the radiating tube and is contained in the nozzle；
Wherein, the nozzle offers feedhole, and the feed pipe is connected with the feedhole.
2. 3 D-printing head according to claim 1, it is characterised in that the nozzle is additionally provided with and is connected with the feedhole
And with diameter greater than the receiving hole of the feedhole, described feed pipe one end is inserted in the receiving hole to connect with the feedhole
It is logical.
3. 3 D-printing head according to claim 1, it is characterised in that the 3 D-printing head also includes joint, described
Joint is inserted in the first end of the radiating tube and is sheathed on the feed pipe, the joint near the radiating tube described
The one end at two ends is held in the nozzle.
4. 3 D-printing head according to claim 3, it is characterised in that the joint is set near one end of the radiating tube
There is the seal around the feed pipe, the both sides of the seal are in close contact with the nozzle with the radiating tube respectively.
5. 3 D-printing head according to claim 1, it is characterised in that the 3 D-printing head also includes heat block, institute
State heat block and be sheathed on one end that the nozzle stretches out the radiating tube.
6. 3 D-printing head according to claim 5, it is characterised in that the nozzle includes not being contained in the radiating tube
With the blocking unit in the heat block, the diameter of the blocking unit is less than other regions and side wall is in thin wall shape structure.
7. 3 D-printing head according to claim 1, it is characterised in that the radiating tube lateral wall is provided with radiating fin.
8. 3 D-printing head according to claim 7, it is characterised in that multiple radiating fins are along the radiating tube axial direction
Extend.
9. a kind of three-dimensional printer, it is characterised in that beat including fuselage and the three-dimensional as described in claim 1～8 any one
Print head, the 3 D-printing head are installed on the fuselage.
10. three-dimensional printer according to claim 9, it is characterised in that the three-dimensional printer also includes radiator fan,
The radiator fan and the 3 D-printing head interval setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611200075.XA CN106515008A (en) | 2016-12-22 | 2016-12-22 | Three-dimensional printing head and three-dimensional printing machine provided with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611200075.XA CN106515008A (en) | 2016-12-22 | 2016-12-22 | Three-dimensional printing head and three-dimensional printing machine provided with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106515008A true CN106515008A (en) | 2017-03-22 |
Family
ID=58340428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611200075.XA Pending CN106515008A (en) | 2016-12-22 | 2016-12-22 | Three-dimensional printing head and three-dimensional printing machine provided with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106515008A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111660562A (en) * | 2020-05-13 | 2020-09-15 | 罗凡 | Three-dimensional shower nozzle device for printing |
| CN111976129A (en) * | 2020-08-27 | 2020-11-24 | 佘峰 | Quick radiating 3D beats printer head |
| CN112706403A (en) * | 2020-12-10 | 2021-04-27 | 芜湖市爱三迪电子科技有限公司 | 3D printer discharge mechanism convenient to dismantle and maintain |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111660562A (en) * | 2020-05-13 | 2020-09-15 | 罗凡 | Three-dimensional shower nozzle device for printing |
| CN111976129A (en) * | 2020-08-27 | 2020-11-24 | 佘峰 | Quick radiating 3D beats printer head |
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| CN112706403B (en) * | 2020-12-10 | 2024-04-05 | 芜湖市爱三迪电子科技有限公司 | 3D printer discharge mechanism convenient to dismantle and maintain |
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Application publication date: 20170322 |