CN108973107A - A kind of quick replacement device of FDM3D print head - Google Patents
A kind of quick replacement device of FDM3D print head Download PDFInfo
- Publication number
- CN108973107A CN108973107A CN201710400558.2A CN201710400558A CN108973107A CN 108973107 A CN108973107 A CN 108973107A CN 201710400558 A CN201710400558 A CN 201710400558A CN 108973107 A CN108973107 A CN 108973107A
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- CN
- China
- Prior art keywords
- sprocket wheel
- extruder head
- solenoid valve
- sleeve
- fdm3d
- Prior art date
- 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.)
- Pending
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- 238000007599 discharging Methods 0.000 claims abstract description 38
- 238000010146 3D printing Methods 0.000 claims abstract description 17
- 238000001125 extrusion Methods 0.000 claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 7
- 229910001369 Brass Inorganic materials 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000010951 brass Substances 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 210000003734 kidney Anatomy 0.000 claims description 3
- 230000008450 motivation Effects 0.000 claims 1
- 238000007639 printing Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 6
- 238000010276 construction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
Abstract
The present invention relates to the quick replacement devices of FDM 3D printing head a kind of in 3D printing engineering device technique field, including barrel, extrusion screw rod is fitted in barrel, the discharge end thread seal of barrel is connected with extrusion sleeve, the discharge end central axis of sleeve and the central axis of feed end are squeezed out into the angle 135o, the discharge end for squeezing out sleeve is rotatably connected to discharging flange, the discharge end of the discharging flange is set there are four discharge hole, the central axis of the feed opening of each discharge hole and discharging flange is at the angle 45o, each discharge hole of the discharging flange is connected separately with solenoid valve, each solenoid valve is connected separately with extruder head, the discharging flanged joint has rotating drive mechanism, the rotating drive mechanism is used to that discharging flange to be driven to rotate and corresponding extruder head is driven to go to the quick-replaceable that working position vertically downward realizes extruder head.The fast online replacement during 3D printing between various sizes of extruder head may be implemented in the device of the invention, to guarantee printing effect and print quality.
Description
Technical field
The present invention relates to 3D printing engineering device technique field, in particular to a kind of FDM 3D printer for melting extrusion
Print head quick replacement device.
Background technique
Continuous exploration and innovation with people to equipment manufacturing field, so that 3D printing increasing material manufacturing is in each manufacturing field
It receives significant attention and promotes and applies, wherein FDM 3D printing technique is one of increasing material manufacturing major way.In the prior art,
There are some bottlenecks in Industrial Printing field by FDM, when such as printing complicated product mold, since each position profile of identical product is big
Small different, when using same size printhead prints, efficiency and quality be cannot be considered in terms of.The biggish mold of usual profile, if adopted
With small printhead prints, then efficiency is too low, need to carry out printing speed using the big extruder head of diameter；And accurate position or smaller
Profile, product quality cannot be guaranteed using big print head, need to be printed using the small extruder head of diameter, protected with this
The print quality at each position is demonstrate,proved, therefore different profiles needs to match the different print head of diameter and printed.Such one
Come, under the premise of guaranteeing print quality, in order to improve printing effect, needs according to the profile size of print position continually more
Change print head.
In actual operation, if replacing print head using manual mode, inefficiency is replaced, not only influences and sets indirectly
Standby printing effect, moreover, because easily causing print quality problem the problem of resetting.Simultaneously as printhead temperature
Height, manual replacement operation are got up more difficult.Therefore, it is necessary to carry out the device that mechanization is replaced automatically to print head to solve this
Class problem.
In the prior art, in the patent application document of Publication No. CN205439272U, promotion has supplied one kind to apply to FDM
The more changing device of 3D printer extruder head.The device is needed print head moving on to designated position and be replaced in print procedure,
This moving process needs accurate alignment positioning, occupies the print time, influences printing effect.And due to change the time compared with
It is long, it is printed again in the case where the product surface temperature printed reduces, influences cementability between layers.In addition,
The print head of replacement needs to heat, and otherwise extruded stock remaining in used print head can not be discharged.
Summary of the invention
The problem of present invention is replaced for FDM3D print head in the prior art, provides a kind of FDM 3D printing head
Quick replacement device, the quick-replaceable during 3D printing between various sizes of extruder head is realized, to guarantee printing effect
And print quality.
The object of the present invention is achieved like this, a kind of quick replacement device of FDM 3D printing head, including barrel, described
Extrusion screw rod is fitted in barrel, the discharge end thread seal of the barrel is connected with extrusion sleeve, the extrusion sleeve
Discharge end and feed end central axis at 135 angles o, the discharge end for squeezing out sleeve is rotatably connected to discharging flange, institute
The discharge end for stating discharging flange is set there are four discharge hole, the central axis of the feed opening of each discharge hole and discharging flange at the angle 45o,
Each discharge hole of the discharging flange is connected separately with solenoid valve, and each solenoid valve is connected separately with extruder head, the discharging flange
It is connected with rotating drive mechanism, the rotating drive mechanism is for driving discharging flange to rotate and corresponding extruder head is driven to go to
Working position vertically downward realizes the quick-replaceable of extruder head.
The quick replacement device of FDM 3D printing head of the invention, there are four discharge holes with the tool that sleeve is rotatablely connected is squeezed out
Discharging flange on four various sizes of extruder heads can be installed, for replacing needs during 3D printing, the flange that discharges passes through
Rotating drive mechanism is drivingly connected, and when needing the extruder head of size to turn to working position vertically downward, is opened solenoid valve and is connected
The tapping channel for leading to the extruder head closes working position when needing replacing the extruder head of another size in print procedure
Solenoid valve, then certain angle is rotated by rotation Qu Yun mechanism driving discharging flange, go to the extruder head of the size vertically
Downward working position opens the solenoid valve of the working position to print the extrusion channel of the extruder head, complete extruder head quickly more
It changes.Extruder head fast replacing structure of the invention does not need print head removing print area when replacing extruder head online, can
To realize fast online replacement in current print position, knot significantly has saved replacing construction, warm between each discharge hole for the flange that discharges
Difference is small, when replacing extruder head, does not need additionally to preheat, and sets insulation construction without another.
For the rotational alignment function of being easy to implement discharging flange, the rotating drive mechanism is sprocket drive, including
Sprocket wheel one, sprocket wheel two, chain and the motor connecting with sprocket wheel two, the center of the sprocket wheel one are equipped with from input terminal to output end diameter
To the interior stepped hole to become smaller, the interior stepped hole input terminal large diameter section is by sliding bearing and squeezes out sleeve rotation connection, institute
The discharge end periphery cooperation for stating extrusion sleeve is equipped with the outer step that outer diameter becomes smaller and is used to install sliding bearing inner ring；The sprocket wheel one
Interior stepped hole small internal diameter section and squeeze out the outer step circumferential play of sleeve and cooperate, the discharging flange feed opening and sprocket wheel one
Output shaft end periphery thread seal connection.Rotation drive structure of the invention, sprocket wheel one drive discharging flange rotation, can incite somebody to action
The extruder head of the position needed replacing goes to working position vertically downward, realizes the replacement of extruder head.
Further, the motor is fixedly mounted in motor support plate, if the motor support plate by bolt stem with
The ram of 3D printing head connects, and the motor output shaft is connect with sprocket wheel two, and the sprocket wheel one and sprocket wheel two are located at same installation
It is connected in plane and by chain drive.
For the axial restraint convenient for device, it has been bolted pressing plate ring on the end face of the input terminal of the sprocket wheel one,
The inside of the pressing plate ring and the outer ring of sliding bearing against；The extrusion sleeve is used to install the outer of the outer step of sliding bearing
Week is equipped with for the check ring axially against sliding bearing inner ring.
It is the center convenient for accurately adjusting sprocket wheel one and sprocket wheel two away from bolted with ram in the motor support plate
Position cooperation is equipped with several bolt mounting holes, and each bolt mounting holes are along sprocket wheel one and the bicentric line direction of sprocket wheel
Kidney slot, for adjust the center between sprocket wheel one and sprocket wheel two away from.
For the closing convenient for controlling the connection of working position extruder head and the extruder head of inoperative position, the solenoid valve is normally closed
Solenoid valve, the discharge end of each solenoid valve are separately connected various sizes of extruder head, and the extruder head in operating position is in vertical
Downward position, the solenoid valve connecting with the extruder head of operating position are controlled by control unit and are opened.
It is the flange material cavity temperature that guarantees to discharge uniformly to be further ensured that the extruded stock homogeneous molten state intracavitary in material,
The material of the discharging flange and extruder head is brass or red copper.
Detailed description of the invention
Fig. 1 is the quick replacement device structural schematic diagram of FDM3D print head of the invention.
Fig. 2 is the schematic diagram of internal structure of the quick replacement device of FDM3D print head of the invention.
Fig. 3 is the distribution schematic diagram of extruder head.
Wherein, 1 ram；2 motor support plates；3 motors；4 chains；5 discharging flanges；6 squeeze out sleeve；7 barrels；8 squeeze out spiral shell
Bar；9 sliding bearings；10 pressing plate rings；11 sprocket wheels one；12 solenoid valves；13 extruder heads；14 sprocket wheels two；15 check rings.
Specific embodiment
It as shown in Figure 1-Figure 3, is the quick replacement device of FDM3D print head of the invention, including barrel 7, the barrel 7 is solid
Dingan County can carry out 3D printing feeding printing with 1 synchronizing moving of ram, be fitted with extrusion screw rod in barrel 7 on ram 1
8, and the end of extrusion screw rod 8 is concordant with the discharge end of barrel 7；The discharge end thread seal of barrel 7 is connected with extrusion sleeve
6, at 135 angles o, the discharge end for squeezing out sleeve 6, which rotates, to be connected for the discharge end central axis of the extrusion sleeve 6 and the central axis of feed end
It is connected to discharging flange 5, the discharge end of discharging flange 5 is set there are four discharge hole, in the feed opening of each discharge hole and discharging flange 5
Mandrel line is connected separately with solenoid valve 12 at the angle 45o, each discharge hole for the flange 5 that discharges, and each solenoid valve 12 is connected separately with extrusion
First 13, discharging flange 5 is connected with rotating drive mechanism, and the rotating drive mechanism is for driving discharging flange 5 to rotate and driving phase
The extruder head answered goes to the quick-replaceable that working position vertically downward realizes extruder head.
The rotating drive mechanism of the present embodiment be sprocket drive, including sprocket wheel 1, sprocket wheel 2 14, chain 4 and with
The motor 2 that sprocket wheel 2 14 connects, the center of sprocket wheel 1 are equipped with the interior stepped hole radially to become smaller from input terminal to output end, and interior
Rank hole input terminal large diameter section is by sliding bearing 9 and squeezes out the rotation connection of sleeve 6, squeezes out the discharge end periphery cooperation of sleeve 6
It is used to install the inner ring of sliding bearing 9 equipped with the outer step that outer diameter becomes smaller；The small internal diameter section of the interior stepped hole of sprocket wheel 1 and squeeze
The outer step circumferential play cooperation of sleeve 6 out, the feed opening for the flange 5 that discharges and the output shaft end periphery thread seal of sprocket wheel one connect
It connects.For the axial restraint convenient for device, pressing plate ring 10, pressing plate ring have been bolted on the end face of the input terminal of sprocket wheel 1
10 inside and the outer ring of sliding bearing 9 against；The periphery for squeezing out the outer step that sleeve 6 is used to install sliding bearing 9, which is equipped with, to be used
In the check ring 15 axially against 9 inner ring of sliding bearing.Rotation drive structure of the invention, sprocket wheel 1 drive discharging flange
The extruder head 13 of the position needed replacing, can be gone to working position vertically downward by 5 rotations, realize extruder head 13 quickly from
Dynamic replacement.For the fixation convenient for motor 3, motor 3 is fixedly mounted in motor support plate 2, if motor support plate 2 passes through bolt stem
It is connect with the ram 1 of 3D printing head, the output shaft of motor 3 is connect with sprocket wheel 2 14, and sprocket wheel 1 and sprocket wheel 2 14 are positioned at same
It is sequentially connected in mounting plane and by chain 4.
For convenient for accurately adjusting the center of sprocket wheel 1 and sprocket wheel 2 14 away from being bolted in motor support plate 2 with ram 1
Position cooperation be equipped with several bolt mounting holes, each bolt mounting holes be along 21 center of sprocket wheel 1 and sprocket wheel line direction
Kidney slot, for adjust the center between sprocket wheel 1 and sprocket wheel 2 14 away from.
For the closing convenient for controlling the connection of working position extruder head 13 and the extruder head of inoperative position, solenoid valve 12 is selected often
Solenoid valve is closed, the discharge end of each solenoid valve is separately connected various sizes of extruder head, and the extruder head in operating position, which is in, to hang down
Straight downward position, the solenoid valve connecting with the extruder head of operating position are controlled by control unit and are opened.
To guarantee discharging flange material cavity temperature uniformly to be further ensured that extruded stock is expecting intracavitary molten condition, discharging
The material of flange 5 and extruder head 13 is thermally conductive fast brass or red copper.
The quick replacement device of FDM 3D printing head of the invention, there are four dischargings with the tool that sleeve 6 is rotatablely connected is squeezed out
Four various sizes of extruder heads can be installed, for replacing needs during 3D printing, discharge flange 5 on the discharging flange 5 in hole
It is drivingly connected by rotating drive mechanism, when needing replacing extruder head, sprocket drive is controlled by control system and is driven
Discharging flange 5 rotates certain angle, when the extruder head of specified size being made to turn to working position vertically downward, opens solenoid valve
It is connected to the tapping channel of the extruder head of the working position；When needing replacing the extruder head of another size in print procedure, control system
The position of extruder head that system is automatically closed the solenoid valve of working position and replaces as needed, control chain-wheel mechanism drive corresponding squeeze
Lift one's head go to working position open the solenoid valve of the working position again be connected to squeeze out channel, complete the fast automatic replacement of extruder head.
Extruder head fast replacing structure of the invention does not need to remove print head into print area, Ke Yi when replacing extruder head online
Current print position realizes that fast online replacement, significantly knot have saved replacing construction, the temperature difference between each discharge hole of flange 5 that discharges
It is small, it when replacing extruder head, does not need additionally to preheat, sets insulation construction without another.
The present invention is not limited to the above embodiments, for example, rotating drive mechanism of the invention is not limited only to the present embodiment
Sprocket drive, can also using with same driving effect other rotating drive mechanisms, for example, gear driving machine
The opposite mechanism for squeezing out sleeve and moving of driving discharging flange may be implemented with actuation etc. for structure.It is all disclosed by the invention
On the basis of technical solution, for those skilled in the art according to disclosed technology contents, not needing creative labor can
To make some replacements and deformation to some of which technical characteristic, these replacements and deformation are in the scope of protection of the invention
It is interior.
Claims (7)
1. a kind of quick replacement device of FDM3D print head, including barrel, it is fitted with extrusion screw rod in the barrel, institute
The discharge end thread seal for stating barrel is connected with extrusion sleeve, which is characterized in that it is described squeeze out sleeve discharge end central axis with
The central axis of feed end is at 135 angles o, and the discharge end for squeezing out sleeve is rotatably connected to discharging flange, the discharging flange
Discharge end is set there are four discharge hole, and the central axis of the feed opening of each discharge hole and discharging flange is at the angle 45o, the discharging flange
Each discharge hole be connected separately with solenoid valve, each solenoid valve is connected separately with extruder head, and the discharging flanged joint has rotation to drive
Motivation structure, the rotating drive mechanism are used to drive the flange that discharges to rotate and corresponding extruder head is driven to go to work vertically downward
Make the quick-replaceable that extruder head is realized in position.
2. the quick replacement device of FDM3D print head according to claim 1, which is characterized in that the rotate driving machine
Structure is sprocket drive, including sprocket wheel one, sprocket wheel two, chain and the motor being connect with sprocket wheel two, the center of the sprocket wheel one
Equipped with the interior stepped hole radially to become smaller from input terminal to output end, the interior stepped hole input terminal large diameter section passes through sliding bearing
It is rotatablely connected with sleeve is squeezed out, the discharge end periphery for squeezing out sleeve cooperates the outer step to become smaller equipped with outer diameter for installing cunning
Dynamic bearing inner ring；The small internal diameter section of the interior stepped hole of the sprocket wheel one and the outer step circumferential play for squeezing out sleeve cooperate, described
Discharging flange feed opening is connect with the output shaft end periphery thread seal of sprocket wheel one.
3. the quick replacement device of FDM3D print head according to claim 2, which is characterized in that the fixed peace of the motor
In motor support plate, if the motor support plate is connect by bolt stem with the ram of 3D printing head, the motor output
Axis is connect with sprocket wheel two, and the sprocket wheel one is located in same mounting plane with sprocket wheel two and is connected by chain drive.
4. the quick replacement device of FDM3D print head according to claim 2, which is characterized in that the sprocket wheel one it is defeated
Enter to be bolted pressing plate ring on the end face at end, the outer ring of the inside of the pressing plate ring and sliding bearing against；It is described to squeeze
The periphery that sleeve is used to install the outer step of sliding bearing out is equipped with for the check ring axially against sliding bearing inner ring.
5. the quick replacement device of FDM3D print head according to claim 3, which is characterized in that the motor support plate
On for being equipped with several bolt mounting holes with the cooperation of ram bolted position, each bolt mounting holes are along sprocket wheel and chain
The kidney slot for taking turns bicentric line direction, for adjust the center between sprocket wheel one and sprocket wheel two away from.
6. the quick replacement device of FDM3D print head according to claim 2, which is characterized in that
The solenoid valve is normally closed solenoid valve, and the discharge end of each solenoid valve is separately connected various sizes of extruder head, is in work
The extruder head of position is in position vertically downward, and the solenoid valve connecting with the extruder head of operating position is controlled by control unit
It opens.
7. the quick replacement device of FDM3D print head according to claim 2, which is characterized in that the discharging flange and
The material of extruder head is brass or red copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710400558.2A CN108973107A (en) | 2017-05-31 | 2017-05-31 | A kind of quick replacement device of FDM3D print head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710400558.2A CN108973107A (en) | 2017-05-31 | 2017-05-31 | A kind of quick replacement device of FDM3D print head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108973107A true CN108973107A (en) | 2018-12-11 |
Family
ID=64501489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710400558.2A Pending CN108973107A (en) | 2017-05-31 | 2017-05-31 | A kind of quick replacement device of FDM3D print head |
Country Status (1)
| Country | Link |
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| CN (1) | CN108973107A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110549462A (en) * | 2019-09-03 | 2019-12-10 | 中交第一公路勘察设计研究院有限公司 | Discharging device for concrete 3D printing tool end |
| CN110920065A (en) * | 2019-10-22 | 2020-03-27 | 北京机科国创轻量化科学研究院有限公司 | Spray head replaceable 3D printer head for quickly forming large-sized product |
| CN111376475A (en) * | 2018-12-27 | 2020-07-07 | 精工爱普生株式会社 | Three-dimensional modeling apparatus |
| CN113276412A (en) * | 2021-05-23 | 2021-08-20 | 北京恒创增材制造技术研究院有限公司 | 3D printing spray head structure for multi-material extrusion molding |
| WO2024156016A1 (en) * | 2023-01-24 | 2024-08-02 | Rohrmoser Florian | Extrusion head for additive manufacturing |
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| US20130295338A1 (en) * | 2012-04-03 | 2013-11-07 | Massachusetts Institute Of Technology | Methods and Apparatus for Computer-Assisted Spray Foam Fabrication |
| CN104369385A (en) * | 2014-11-28 | 2015-02-25 | 珠海天威飞马打印耗材有限公司 | Printing head of 3D (three-dimensional) printer |
| CN105965898A (en) * | 2016-07-04 | 2016-09-28 | 吉林省夏唯自动化工程有限公司 | 3D printer sprayer with rotation switching function |
| CN206999628U (en) * | 2017-05-31 | 2018-02-13 | 宁夏共享模具有限公司 | A kind of quick replacement device of FDM3D printheads |
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2017
- 2017-05-31 CN CN201710400558.2A patent/CN108973107A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20130295338A1 (en) * | 2012-04-03 | 2013-11-07 | Massachusetts Institute Of Technology | Methods and Apparatus for Computer-Assisted Spray Foam Fabrication |
| CN104369385A (en) * | 2014-11-28 | 2015-02-25 | 珠海天威飞马打印耗材有限公司 | Printing head of 3D (three-dimensional) printer |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111376475A (en) * | 2018-12-27 | 2020-07-07 | 精工爱普生株式会社 | Three-dimensional modeling apparatus |
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| CN110549462A (en) * | 2019-09-03 | 2019-12-10 | 中交第一公路勘察设计研究院有限公司 | Discharging device for concrete 3D printing tool end |
| CN110920065A (en) * | 2019-10-22 | 2020-03-27 | 北京机科国创轻量化科学研究院有限公司 | Spray head replaceable 3D printer head for quickly forming large-sized product |
| CN113276412A (en) * | 2021-05-23 | 2021-08-20 | 北京恒创增材制造技术研究院有限公司 | 3D printing spray head structure for multi-material extrusion molding |
| WO2024156016A1 (en) * | 2023-01-24 | 2024-08-02 | Rohrmoser Florian | Extrusion head for additive manufacturing |
| AT526877A1 (en) * | 2023-01-24 | 2024-08-15 | Florian Rohrmoser | Extrusion head for additive manufacturing |
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Application publication date: 20181211 |