CN106938537A - FDM rapid forming equipment extruder heads - Google Patents
FDM rapid forming equipment extruder heads Download PDFInfo
- Publication number
- CN106938537A CN106938537A CN201610006225.7A CN201610006225A CN106938537A CN 106938537 A CN106938537 A CN 106938537A CN 201610006225 A CN201610006225 A CN 201610006225A CN 106938537 A CN106938537 A CN 106938537A
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- China
- Prior art keywords
- nozzle
- trunnion
- rapid forming
- high temperature
- extruder head
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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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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention provides a kind of FDM rapid forming equipments extruder head, including feed mechanism and shower nozzle, the shower nozzle includes the trunnion and nozzle being connected, consumptive material is delivered to the shower nozzle by the feed mechanism, the nozzle is entered by the trunnion, high temperature-resistant liner pipe is lined with the trunnion, the end face of high temperature resistant bushing pipe towards the nozzle is resisted against the nozzle towards the end face of the trunnion, and the consumptive material enters the nozzle through the high temperature resistant bushing pipe.The FDM rapid forming equipments extruder head sets high temperature resistant bushing pipe in trunnion liner, can efficiently solve the putty problem produced by consumptive material expanded by heating.
Description
Technical field
Squeezed the present invention relates to FDM rapid shaping techniques field, more particularly to a kind of FDM rapid forming equipments
Lift one's head.
Background technology
The material of melting extrusion shaping (FDM) technique is usually thermoplastic, such as wax, ABS, PC, Buddhist nun
Dragon etc., is fed (consumptive material) with wire.Material is heated fusing in shower nozzle.Shower nozzle along part section profile and
Track motion is filled, while the material of fusing is extruded, material solidifies rapidly, and bonded with the material of surrounding.
In FDM rapid forming equipments, feeder and shower nozzle are hereafter referred to collectively as extruder head, and extruder head is used to perform micro- place
It is (big from showerhead hole that consumptive material is heated to molten condition by the shower nozzle of the consumptive material feeding high temperature of wire by the instruction of reason device
About diameter 0.4mm) extrusion.
When being processed using the extruder head of existing FDM rapid forming equipments, consumptive material the sending by normal temperature of wire
Material machine enters shower nozzle and is heated block heating after sending out, during which the heated journey of consumptive material is expanded, referring to Fig. 1,
The nozzle of high temperature (220 DEG C) probably only has 80 DEG C to the temperature of trunnion end, during temperature ladder becomes
Consumptive material softening (softens but unfused) diameter change greatly, causes consumptive material and trunnion inner wall pressure to become big, frictional force
Also become big therewith, the double increase of friction range between consumptive material and inwall is understood by f=uF, experiment is proved if not
Plus handle, the problem will cause consumptive material can not melt ejection, that is, cause what is produced by consumptive material expanded by heating to block up
Material problem.
The content of the invention
In view of this, in order to overcome the defect and problem of prior art, it is rapid-result soon that the present invention provides a kind of FDM
Type equipment extruder head.
A kind of FDM rapid forming equipments extruder head, including feed mechanism and shower nozzle, the shower nozzle include being connected
Consumptive material is delivered to the shower nozzle by the trunnion and nozzle connect, the feed mechanism, enters described by the trunnion
High temperature-resistant liner pipe is lined with nozzle, the trunnion, the end face of high temperature resistant bushing pipe towards the nozzle is supported
The nozzle is against towards the end face of the trunnion, the consumptive material enters the spray through the high temperature resistant bushing pipe
Mouth.
In a better embodiment of the invention, the high temperature resistant bushing pipe is teflon pipe.
In a better embodiment of the invention, the feed mechanism includes opposed material extrusion driving wheel and material extrusion quilt
Driving wheel, the material extrusion driving wheel is connected to machine shaft.
In a better embodiment of the invention, the tangent plane between the material extrusion driving wheel and the material extrusion follower
Distance is less than the diameter of the consumptive material.
In a better embodiment of the invention, the shower nozzle also includes heat block, and the heat block is sheathed on institute
State the connecting portion of trunnion and the nozzle.
In a better embodiment of the invention, the trunnion and the nozzle connect threadably respectively
In the through hole for being connected to the heat block, and one end of the nozzle towards the trunnion is arranged in the trunnion.
In a better embodiment of the invention, the trunnion is made of stainless steel material, and the nozzle is used
Copper product is made.
Relative to prior art, the FDM rapid forming equipments extruder head that the present invention is provided sets resistance in trunnion liner
High temperature bushing pipe, and the end face of high temperature resistant bushing pipe towards the nozzle is resisted against the nozzle towards the larynx
The end face of pipe, can efficiently solve the putty problem produced by consumptive material expanded by heating.
Brief description of the drawings
A kind of schematic diagram for FDM rapid forming equipments extruder head that Fig. 1 provides for the present invention；
Fig. 2 is the schematic diagram of shower nozzle in FDM rapid forming equipments extruder head shown in Fig. 1.
Embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.
The better embodiment of the present invention is given in accompanying drawing.It these are only the preferred embodiments of the present invention, and unprovoked
The scope of the claims of this limitation present invention, the equivalent structure that every utilization description of the invention and accompanying drawing content are made
Or equivalent flow conversion, or other related technical fields are directly or indirectly used in, similarly it is included in this
In the scope of patent protection of invention.
Unless otherwise defined, technology of all of technologies and scientific terms used here by the article with belonging to the present invention
The implication that the technical staff in field is generally understood that is identical.Art used in the description of the invention herein
Language is intended merely to describe the purpose of specific embodiment, it is not intended that in the limitation present invention.It is used herein
Term " and/or " include the arbitrary and all combination of one or more related Listed Items.
Also referring to Fig. 1 and Fig. 2, one embodiment of the invention provides a kind of FDM rapid forming equipments extrusion
Head, including feed mechanism and shower nozzle, the shower nozzle include the trunnion 3 and nozzle 5 being connected, the feeder
Consumptive material 8 is delivered to the shower nozzle by structure, enters the nozzle 5 by the trunnion 3, and the liner of trunnion 3 is set
There is high temperature resistant bushing pipe 4, the end face of the high temperature resistant bushing pipe 4 towards the nozzle 5 is resisted against the court of nozzle 5
To the end face of the trunnion 5, the consumptive material 8 enters the nozzle 5 through the high temperature resistant bushing pipe 4.
In the present embodiment, it is teflon pipe that the high temperature resistant bushing pipe 4, which is preferably, because Teflon material has
High temperature resistant, self-lubricating, thermal conductivity factor is extremely low and its hardness is shore hardness D50-D65, can wriggle,
Consumptive material 8 can be compensated well for deform upon because heated, resistant to elevated temperatures characteristic can ensure that it under the high temperature conditions may be used
The work leaned on, the low characteristic of thermal conductivity factor then can further reduce feed mechanism consumptive material 8 in feeding process
The temperature of (i.e. wire rod), the characteristic of self-lubricating ensures that consumptive material 8 and the inwall of high temperature resistant bushing pipe 4
Frictional force, can finally efficiently solve the putty problem produced by the expanded by heating of consumptive material 8.
It is understood that can be with the side of interference fit between the trunnion 3 and the high temperature resistant bushing pipe 4
Formula realizes that the liner of the high temperature resistant bushing pipe 4 is set.
The feed mechanism includes opposed material extrusion driving wheel 2 and material extrusion follower 7, the material extrusion driving wheel 2
Tangent plane distance between the material extrusion follower 7 is used to pass through in the consumptive material 8, the present embodiment, described to squeeze
Material driving wheel 2 is connected to machine shaft (not shown), is directly driven and rotated by machine shaft.
Preferably, the tangent plane distance between the material extrusion driving wheel 2 and the material extrusion follower 7 is less than described
The diameter of consumptive material 8.Thus, the consumptive material 8 passes through the material extrusion driving wheel 2 and the material extrusion follower 7
When be clamped, and rotated the material extrusion driving wheel 2 driving realize feeding, pass through the material extrusion driving wheel 2
With after the material extrusion follower 7 enter the trunnion 3, and then enter high temperature the nozzle 5, after melting by
The nozzle 5 is extruded.It is understood that the material extrusion follower 7 can rotatably be set by rotating shaft
Put.
The shower nozzle also includes heat block 6, and the heat block 6 is sheathed on the trunnion 3 and the nozzle 5
Connecting portion.Preferably, the trunnion 3 and the nozzle 5 are connected to described threadably respectively
In the through hole of heat block 6, and one end of the nozzle 5 towards the trunnion 3 is arranged in the trunnion 3, i.e.,
The end of the nozzle 5 is inserted in the trunnion 3.In the present embodiment, the trunnion 3 uses stainless steel
(SUS) material is made, and the nozzle 5 is made of copper product.Thus, it is possible to utilize the trunnion 3
With the effect of expanding with heat and contract with cold of the different materials of the nozzle 5, eliminate between the trunnion 3 and the nozzle 5
Gap, and then the material leakage problem of the junction of the trunnion 3 and the nozzle 5 can be efficiently solved.
Meanwhile, the thread connecting mode between the trunnion 3, the nozzle 5 and the heat block 6, it is possibility to have
Effect ground solves the problems, such as the material leakage between junction.
Preferably, the high temperature resistant bushing pipe 4 and the nozzle 5 are coaxial, and internal diameter is identical.
In the present embodiment, the feed mechanism and the shower nozzle may be contained within shell 1, thus, it is possible to keep away
Exempt from the feed mechanism and the shower nozzle is exposed in air, guarantor is played to the feed mechanism and the shower nozzle
Shield and dust-proof effect.
Relative to prior art, the FDM rapid forming equipments extruder head that the present invention is provided is set in the liner of trunnion 3
High temperature resistant bushing pipe 4, and the end face of the high temperature resistant bushing pipe 4 towards the nozzle 5 is resisted against the court of nozzle 5
To the end face of the trunnion 3, the putty problem produced by the expanded by heating of consumptive material 8 can be efficiently solved.
Embodiment described above only expresses the several embodiments of the present invention, and it describes more specific and detailed,
But therefore it can not be interpreted as the limitation to the scope of the claims of the present invention.It should be pointed out that for this area
Those of ordinary skill for, without departing from the inventive concept of the premise, can also make it is some deformation and
Improve, these belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be with appended
Claim is defined.
Claims (7)
1. a kind of FDM rapid forming equipments extruder head, including feed mechanism and shower nozzle, the shower nozzle include
Consumptive material is delivered to the shower nozzle by the trunnion and nozzle being connected, the feed mechanism, is entered by the trunnion
The nozzle, it is characterised in that high temperature-resistant liner pipe, the high temperature resistant bushing pipe direction are lined with the trunnion
The end face of the nozzle is resisted against the nozzle towards the end face of the trunnion, and the consumptive material passes through the resistance to height
Warm bushing pipe enters the nozzle.
2. FDM rapid forming equipments extruder head as claimed in claim 1, it is characterised in that described resistance to
High temperature bushing pipe is teflon pipe.
3. FDM rapid forming equipments extruder head as claimed in claim 1, it is characterised in that described to send
Expect that mechanism includes opposed material extrusion driving wheel and material extrusion follower, the material extrusion driving wheel is connected to machine shaft.
4. FDM rapid forming equipments extruder head as claimed in claim 3, it is characterised in that described to squeeze
Expect that the tangent plane distance between driving wheel and the material extrusion follower is less than the diameter of the consumptive material.
5. FDM rapid forming equipments extruder head as claimed in claim 1, it is characterised in that the spray
Head also includes heat block, and the heat block is sheathed on the connecting portion of the trunnion and the nozzle.
6. FDM rapid forming equipments extruder head as claimed in claim 5, it is characterised in that the larynx
Pipe and the nozzle are connected in the through hole of the heat block threadably respectively, and the nozzle
The trunnion is arranged in towards one end of the trunnion.
7. FDM rapid forming equipments extruder head as claimed in claim 1, it is characterised in that the larynx
Pipe is made of stainless steel material, and the nozzle is made of copper product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610006225.7A CN106938537A (en) | 2016-01-04 | 2016-01-04 | FDM rapid forming equipment extruder heads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610006225.7A CN106938537A (en) | 2016-01-04 | 2016-01-04 | FDM rapid forming equipment extruder heads |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106938537A true CN106938537A (en) | 2017-07-11 |
Family
ID=59468895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610006225.7A Pending CN106938537A (en) | 2016-01-04 | 2016-01-04 | FDM rapid forming equipment extruder heads |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106938537A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107412876A (en) * | 2017-07-17 | 2017-12-01 | 西安知朴材料科技有限公司 | Degradable implant, its 3D manufacturing equipment and 3D printing method |
Citations (7)
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|---|---|---|---|---|
| CN102922745A (en) * | 2012-11-06 | 2013-02-13 | 中科院广州电子技术有限公司 | Three-dimensional printer extrusion head capable of feeding in switching mode |
| CN103350507A (en) * | 2013-04-04 | 2013-10-16 | 周双 | Three-dimensional printing pen |
| CN103386760A (en) * | 2013-07-03 | 2013-11-13 | 桂林半岛电子科技有限公司 | 3D printer based on FDM technology |
| US20140361460A1 (en) * | 2013-06-05 | 2014-12-11 | Markforged, Inc. | Methods for fiber reinforced additive manufacturing |
| CN204076844U (en) * | 2014-08-25 | 2015-01-07 | 江苏威宝仕科技有限公司 | A kind of anti-leakage anti-block plug nozzle component for 3D printer |
| CN104708815A (en) * | 2013-12-13 | 2015-06-17 | 三纬国际立体列印科技股份有限公司 | print head module |
| CN104802404A (en) * | 2015-04-02 | 2015-07-29 | 南宁利汉仪器设备有限公司 | Vibrating-type anti-blocking printer spray head assembly |
-
2016
- 2016-01-04 CN CN201610006225.7A patent/CN106938537A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102922745A (en) * | 2012-11-06 | 2013-02-13 | 中科院广州电子技术有限公司 | Three-dimensional printer extrusion head capable of feeding in switching mode |
| CN103350507A (en) * | 2013-04-04 | 2013-10-16 | 周双 | Three-dimensional printing pen |
| US20140361460A1 (en) * | 2013-06-05 | 2014-12-11 | Markforged, Inc. | Methods for fiber reinforced additive manufacturing |
| CN103386760A (en) * | 2013-07-03 | 2013-11-13 | 桂林半岛电子科技有限公司 | 3D printer based on FDM technology |
| CN104708815A (en) * | 2013-12-13 | 2015-06-17 | 三纬国际立体列印科技股份有限公司 | print head module |
| CN204076844U (en) * | 2014-08-25 | 2015-01-07 | 江苏威宝仕科技有限公司 | A kind of anti-leakage anti-block plug nozzle component for 3D printer |
| CN104802404A (en) * | 2015-04-02 | 2015-07-29 | 南宁利汉仪器设备有限公司 | Vibrating-type anti-blocking printer spray head assembly |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107412876A (en) * | 2017-07-17 | 2017-12-01 | 西安知朴材料科技有限公司 | Degradable implant, its 3D manufacturing equipment and 3D printing method |
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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: 20170711 |
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| RJ01 | Rejection of invention patent application after publication |