CN205467373U - Shower nozzle device of 3D printer - Google Patents
Shower nozzle device of 3D printer Download PDFInfo
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- CN205467373U CN205467373U CN201521140682.2U CN201521140682U CN205467373U CN 205467373 U CN205467373 U CN 205467373U CN 201521140682 U CN201521140682 U CN 201521140682U CN 205467373 U CN205467373 U CN 205467373U
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- cylinder
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- discharge opening
- printer
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Abstract
The utility model discloses a shower nozzle device of 3D printer, shower nozzle device include supporting seat, barrel, nozzle and needle, because the needle is fixed on the mount pad, the barrel is movably to be installed on the supporting seat, and nozzle install is on the barrel, and the needle holding is in nozzle and barrel enclose synthetic cavity for needle and mobilizable nozzle choke valve, but the discharge opening of nozzle is lived in the needle shutoff, the in -process is being printed to the shower nozzle device, and finish to print or other positions are removed when continuing to print to the time -out printing when the shower nozzle device, but the discharge opening of nozzle is lived in the needle shutoff, has realized the throttle of material, has avoided the leakage of material, removes the in -process at the long distance very much, and that can avoid that material leakage in a large number leads to wastes and stain the product. Mobilizable nozzle also makes the switching of many shower nozzles realize simultaneously, and the non - current nozzle that uses can upwards leave prints the plane.
Description
Technical field
This utility model relates to 3D printing technique field, is specifically related to the ejecting device of a kind of 3D printer.
Background technology
3D printer, also known as three-dimensional printer, is a kind of one increasing material manufacturing technology, i.e. Rapid Prototyping technique
Machine, based on it is a kind of mathematical model file, uses graininess, powdery metal or plastics etc. to glue
Condensation material, manufactures the object of three-dimensional by the jointing material printed from level to level.Present stage three-dimensional printer quilt
It is used for manufacturing product.The mode successively printed is used to carry out the technology of constructed object.The principle of 3D printer is handle
Data and raw material are put in 3D printer, and machine can be created product from level to level according to program.
3D is printed with a variety of type of skill, the wherein principle of the 3D printer of fusion sediment type technology such as figure
Shown in 1,3D printer mainly includes ejecting device 101, pay-off 102, material silk 103, adds hot charging
Put and control device (not shown).Pay-off 102 includes a running roller and a gear, passes through
Ejecting device 101 clamp-oned by two-wheeled extruding driving material silk 103 from upper end, and ejecting device 101 is added by heater
Heat, is melted into fluid by the material silk clamp-oning ejecting device 101, and the final device that controls controls ejecting device 101
The material moving and extruding flow-like realizes fusion sediment printing.
The 3D printer of the above-mentioned type, in print procedure, when running into interval printing, i.e. moves from a region
When another region prints, in moving process, ejecting device 101 material extrusion to be stopped, being filled by feeding
Put 102 running rollers to stop rolling or backscrolling realization time-out material extrusion, and ejecting device 101 houses fluid material
Cavity remains UNICOM with extraneous, when ejecting device 101 small distance moves or moves in the short time, logical
The viscosity crossing fluid material is capable of the stopping of material extrusion, but when the mobile needs of big distance are long-time, Yi Jiduo
When the inoperative head of printhead stops, fluid material can spill ejecting device 101 under gravity, as large-scale
When 3D printer prints large product, the leakage of ejecting device 101 not only causes waste of material, even results in
Scrapping of printed product.
Summary of the invention
The application provides one to be prevented from material leakage, also can realize the 3D printer of multiinjector switching simultaneously
Ejecting device.
A kind of embodiment provides the ejecting device of 3D printer, comprising:
Supporting seat, it is provided with material guide hole；
Cylinder, its be movably mounted at support seat on, cylinder side is provided with charging aperture, charging aperture and guide
Hole UNICOM；
Nozzle, it is removably mounted on cylinder, and nozzle-end is provided with discharge opening；
And needle, it is placed in the cavity that nozzle and cylinder enclose, and needle is fixed on by fixture
Supporting on seat, needle forms choke valve with moveable nozzle, and during throttling, nozzle moves and contacts to needle,
Needle plug at end part lives the discharge opening of nozzle.
Further, needle is cone towards the end of the discharge opening of nozzle, and the discharge opening of nozzle is circular hole,
Taper and discharge opening center alignment；During throttling, the effect lower part that the conical end of needle moves on cylinder
Insert in the discharge opening of nozzle, discharge opening is blocked.
Further, also including sealing ring and cover plate, cover plate is provided with groove, and ring set is at cylinder and props up
The junction of support seat, cover plate is fixed on support seat, and is fixed in a groove by sealing ring.
Further sealing ring is expanded graphite meterial, and the heat in print procedure makes it expand, sealing effectiveness
More reliable durable.
Further, also including spring and cushion block, cylinder is provided with boss relative to the other end of discharge opening, pad
Sheet is fixed on support seat, and spring is arranged between boss and cushion block, and in the absence of external forces, spring drives
Dynamic cylinder contacts with needle so that the discharge opening of a cylinder is blocked by needle all the time.
Further, cushion block is provided with for pacifying spring-loaded annular groove.
Further, cylinder is provided with the mouth of dodging for installing needle, and needle one end is fixed by fixture
Supporting on seat.
Further, fixture includes mounting blocks and screw, and mounting blocks is fixed by screws on support seat,
Needle is fixed on mounting blocks through the mouth of dodging of cylinder by screw.
Further, also bag cylinder, cylinder contacts with cylinder, is used for driving cylinder to move.
According to the ejecting device of the 3D printer of above-described embodiment, owing to needle is fixed in mounting seat, cylinder
Being movably mounted on support seat, and nozzle is arranged on cylinder, needle is placed in nozzle and encloses with cylinder
In the cavity become so that needle forms choke valve with moveable nozzle, and needle can block the discharging of nozzle
Hole；Ejecting device in print procedure, when ejecting device terminate print or time-out printing move to other positions
When continuing to print, needle can block the discharge opening of nozzle, it is achieved that the throttling of material, it is to avoid the leakage of material,
Especially in distance moving process, it is possible to avoid expecting in a large number leak the waste caused and stain product.
Accompanying drawing explanation
Fig. 1 is the structural representation of the ejecting device of 3D printer of the prior art；
Fig. 2 is the structural representation of the ejecting device of the 3D printer of a kind of embodiment；
Fig. 3 is the A-A sectional view of Fig. 2；
Fig. 4 is the structural representation of the ejecting device of the 3D printer of another kind of embodiment；
Fig. 5 is the B-B sectional view of Fig. 4.
Detailed description of the invention
Combine accompanying drawing below by detailed description of the invention this utility model is described in further detail.
Embodiment one:
Present embodiments providing the ejecting device of a kind of 3D printer, this ejecting device is used for being arranged on large-scale
Use it can also be used on other middle-size and small-size 3D printers or other equipment on 3D printer.And 3D prints
Machine can install multiple ejecting devices according to use demand.
As shown in Figures 2 and 3, the ejecting device of a kind of 3D printer that the present embodiment provides, it includes propping up
Support seat 1, cylinder 2, nozzle 3 and needle 4.
Support seat 1 can the installation of whole ejecting device be fixed on 3D printer.Support seat 1 and there is protrusion
Cantilever beam, cantilever beam is provided with the cavity of both ends open.Support seat 1 and be provided with material guide hole 11, material guide hole 11
One end be connected with pay-off, the other end extends in the cavity of cantilever beam.
Cylinder 2 sidewall is provided with charging aperture 21, and nozzle 3 end is provided with discharge opening 31, and nozzle 3 passes through screw thread
It is removably mounted on the end of cylinder 2, cylinder 2 and nozzle 3 and encloses cavity, this cavity and charging aperture
21 and discharge opening 31 UNICOM.
Cylinder 2 is movably mounted on support seat 1, and cylinder 2 part is placed in the cavity supporting seat 1,
Cylinder 2 can slide along the cavity supporting seat 1.The charging aperture 21 of cylinder 2 is positioned at the cavity supporting seat 1,
Cylinder 2 sidewall is provided with charging aperture 21, and charging aperture 21 and material guide hole 11 UNICOM supporting seat 1 so that
Material can import to carry out in cylinder 2 3D printing by material guide hole 11.
Owing to cylinder 2 is removable installation settings so that work at the 3D printer being provided with multiple cylinder 2
Time, can be dodged other by mobile cylinder 2 and carry out the cylinder 2 that prints, without other travel mechanism
Idle cylinder 2 is removed.
Together with nozzle 3 is removably mounted at cylinder 2, the installation of needle 4, and beneficially cylinder can be easy to
Body 2 cleaning, if the discharge opening 31 of cylinder 2 or internal blocked, only need to just can by dismounting nozzle 3
Carry out Quick dredging maintenance.There is on nozzle 3 discharge opening 31, if change the discharge opening 31 of other bores,
Only need to change corresponding nozzle 3.
Preferably, the charging aperture 21 of cylinder 2 be the aperture of trough type at above-below direction more than leading of being mated with
Material hole 11 aperture, and ensure cylinder 2 in the stroke range of movement, material guide hole 11 all the time with charging
Mouth 21 docks completely, it is ensured that material guide hole 11 and the complete UNICOM of charging aperture 21, even if in moving process, leads
The docking port of the conducting material in material hole 11 also will not be stopped by the sidewall of the cylinder 2 in movement.
Needle 4 is the cylinder with conical end, and needle 4 is placed in cylinder 2 and nozzle 3 encloses
Cavity in, needle 4 fluted and and cavity inner wall between there is gap, this groove and gap are by cylinder 2
Charging aperture 21 and discharge opening 31 UNICOM of nozzle 3, and the going out of the conical end of needle 4 and nozzle 3
Material hole 31 center alignment is arranged.In order to install needle 4, cylinder 2 is provided with dodges dodging of needle 4 installation
Hole, screw dodges hole through this and hung by needle 4 and be fixed on support seat 1, cylinder 2 to dodge hole corresponding
Expansion in the vertical direction, to meet the demand that needle 4 moves.
Preferably, the installation of needle 4 and the movement of beneficially cylinder 2 for convenience, needle 4 is the most conical
The diameter of axle of the other end of end is equal to or slightly less than the internal diameter of cavity, and is provided with groove radially on this end,
Charging aperture 21 is arranged by groove surface so that needle 4 hangs energy strict centring when installing, only need to be from outside
Directly fixed by screw, leave conducting charging aperture 21 and the groove of discharge opening 31 and enough gaps simultaneously.
In the present embodiment, the other end of cylinder 2 relative nozzle 3 is connected with extraneous driving means, such as with
Cylinder connects, and air cylinder driven cylinder 2 moves, and the shift motion of cylinder 2 is between 2～4 millimeters, originally
Embodiment is preferably 3 millimeters, and air cylinder driven cylinder 2 moves up 3 millimeters to orientation shown in Fig. 1, needle 4
Conical end insert nozzle 3 discharge opening 31 in discharge opening 31 is blocked；Contrary air cylinder driven cylinder
Body 2 moves down 3 millimeters, and the conical end of needle 4 all exits discharge opening 31, and discharge opening 31 is by entirely
Portion turns on.
In other embodiments, this ejecting device also includes cylinder (not shown), cylinder and cylinder 2
Contact, is used for driving cylinder 2 to move.
In the present embodiment, because cylinder 2 is displaceable member, cylinder 2 is through the cavity of support seat 1, inevitable
Support and there is certain interval in the middle of seat 1 and cylinder 2, therefore in order to prevent material from leaking, ejecting device also includes
Two cover plates 5 and two sealing rings 6, cover plate 5 is fixed in the cavity two ends outlet supporting seat 1, and overlaps
It is located on cylinder 2.The groove being provided with installation sealing ring 6 of cover plate 5, during installation, the groove surface of cover plate 5
Arranging to supporting seat 1, sealing ring 6 is placed in the groove of cover plate 5, sealing ring 6 block cylinder 2 with
Support the gap of seat 1, it is to avoid material in cavity to External leakage.Sealing ring is expanded graphite, at high temperature
Lower expansion makes sealing more reliable.
Fixture 7 includes mounting blocks and screw, and mounting blocks is fixed by screws on support seat 1, needle 4
Then be fixed by screws on mounting blocks, i.e. needle 4 is fixed on support seat 1 by mounting blocks and screw
On.And mounting blocks extends to support in seat 1, it is achieved to the sealing dodging hole.
The ejecting device of the 3D printer that the present embodiment provides, its throttling operation principle is: when printing,
Air cylinder driven cylinder 2 moves down so that the discharge opening 31 of nozzle 3 is turned fully on, then is filled by feeding
Put and the material of high temperature melt is imported in cylinder 2 from material guide hole 11, finally carry out from discharge opening 31 extrusion
3D successively prints；When printer has printed, or printing way needs temporarily cease printing by ejecting device shifting
During dynamic next print position, first pass through pay-off or the pumpback device being connected with material guide hole, will complete
The material also stayed outside discharge opening 31 after printing sucks back, then leads to air cylinder driven cylinder 2 and move up 3 millimeters,
The cylinder-shaped end making needle 4 blocks discharge opening 31, it is achieved throttling.
The ejecting device of the 3D printer that the present embodiment provides, owing to needle 4 and moveable cylinder 2 form
Choke valve so that needle 4 can block the discharge opening 31 of cylinder 2；Ejecting device in print procedure, when
Ejecting device terminate print or time-out printing move to other positions continue print time, needle 4 can block cylinder
The discharge opening 31 of body 2, it is achieved that the throttling of material, it is to avoid the leakage of material, the most large-scale 3D printer
Cylinder 2 in distance moving process, it is possible to avoid expecting in a large number leaking the waste caused and staiing product.
Also make multiinjector can conveniently switch when printing simultaneously.
Embodiment two:
As shown in Figure 4 and Figure 5, the ejecting device of a kind of 3D printer that the present embodiment provides is in above-mentioned enforcement
Spring 8 and cushion block 9 is added on the basis of example one.
In order to fix spring 8, it is provided with boss 22, cushion block 9 in the end of the other end of the relative discharge opening of cylinder 2
Being fixed on cover plate 5, spring 8 is set between the boss 22 of cylinder 2 and cushion block 9, spring 8 be in by
Compression state, in the absence of external forces, spring 8 by the boss 22 of cylinder 2 to the side away from cushion block 9
To applying thrust so that the discharge opening 31 of cylinder 2 is blocked by needle 4.
If carrying out 3D printing, then need to apply thrust by extraneous driving means to cylinder 2 so that cylinder 2 to
Lower movement, discharge opening 31 is switched on.If print end or need time-out printing, only need to remove extraneous driving dress
Putting the thrust applied to cylinder 2, under the effect of spring 8, cylinder 2 is retired the position originally blocked
Put.
In other embodiments, cushion block 9 is provided with annular groove.Spring 8 is fastened on annular groove, makes
The installation obtaining spring 8 is more firm.
The ejecting device of the 3D printer that the present embodiment provides, owing to being provided with spring 8, it is achieved that ejecting device
Automatically reset, instead of the acting of driving means, saved operating cost.
This utility model is illustrated by use above specific case, is only intended to help and understands that this practicality is new
Type, not in order to limit this utility model.For this utility model person of ordinary skill in the field, depend on
According to thought of the present utility model, it is also possible to make some simple deductions, deform or replace.
Claims (8)
1. the ejecting device of a 3D printer, it is characterised in that including:
Supporting seat, it is provided with material guide hole；
Cylinder, it is movably mounted on described support seat, and described cylinder side is provided with charging aperture, described
Charging aperture and described material guide hole UNICOM；
Nozzle, it is removably mounted on described cylinder, and described nozzle-end is provided with discharge opening；
And needle, it is placed in the cavity that described nozzle and cylinder enclose, and described needle is by fixing
Part is fixed on described support seat, and described needle forms choke valve with moveable described nozzle, during throttling,
Described nozzle moves and contacts to described needle, and the discharge opening of nozzle is stated in described needle plug at end part residence.
2. the ejecting device of 3D printer as claimed in claim 1, it is characterised in that described needle
End towards the discharge opening of described nozzle is cone, and the discharge opening of described nozzle is circular hole, described taper
With discharge opening center alignment；During throttling, the effect lower part that the conical end of described needle moves on cylinder
Insert in the discharge opening of described nozzle, described discharge opening is blocked.
3. the ejecting device of 3D printer as claimed in claim 2, it is characterised in that also include close
Seal and cover plate, described cover plate is provided with groove, and described ring set is in described cylinder and the connection supporting seat
Place, described cover plate is fixed on described support seat, and is fixed in described groove by described sealing ring.
4. the ejecting device of 3D printer as claimed in claim 3, it is characterised in that also include bullet
Spring and cushion block, described cylinder is provided with boss relative to the other end of discharge opening, and described pad is fixed on described
On support seat, described spring is arranged between described boss and cushion block, in the absence of external forces, and described spring
Described cylinder is driven to contact with needle so that the discharge opening of a described cylinder is blocked by described needle all the time.
5. the ejecting device of 3D printer as claimed in claim 4, it is characterised in that described cushion block
It is provided with the annular groove for installing described spring.
6. the ejecting device of 3D printer as claimed in claim 5, it is characterised in that described cylinder
Being provided with the mouth of dodging for installing described needle, described needle one end is fixed on described by described fixture
Support on seat.
7. the ejecting device of the 3D printer as described in any one of claim 1 to 6, it is characterised in that
Described fixture includes that mounting blocks and screw, described mounting blocks are fixed by screws on described support seat, institute
State needle to be fixed on described mounting blocks through the mouth of dodging of described cylinder by screw.
8. the ejecting device of 3D printer as claimed in claim 7, it is characterised in that also bag cylinder,
Described cylinder contacts with described cylinder, is used for driving described cylinder to move.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521140682.2U CN205467373U (en) | 2015-12-31 | 2015-12-31 | Shower nozzle device of 3D printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521140682.2U CN205467373U (en) | 2015-12-31 | 2015-12-31 | Shower nozzle device of 3D printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205467373U true CN205467373U (en) | 2016-08-17 |
Family
ID=56663336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521140682.2U Active CN205467373U (en) | 2015-12-31 | 2015-12-31 | Shower nozzle device of 3D printer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205467373U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109866424A (en) * | 2019-03-15 | 2019-06-11 | 西安增材制造国家研究院有限公司 | A kind of anti-tear drop nozzle of large-size particle plastics 3D printer |
-
2015
- 2015-12-31 CN CN201521140682.2U patent/CN205467373U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109866424A (en) * | 2019-03-15 | 2019-06-11 | 西安增材制造国家研究院有限公司 | A kind of anti-tear drop nozzle of large-size particle plastics 3D printer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210923 Address after: 310005 room 11a-1, No. 356, Hushu South Road, Gongshu District, Hangzhou City, Zhejiang Province Patentee after: Zhejiang guangpaizhizao Technology Co.,Ltd. Address before: 518105 room 912, Huamei building, No. 1, Huamei Road, Songgang street, Bao'an District, Shenzhen, Guangdong Province Patentee before: Shenzhen Wanwei Intelligent Manufacturing Technology Co.,Ltd. |
|
| TR01 | Transfer of patent right |