CN207643704U - A kind of 3D printer nozzle of anti-tear drop - Google Patents
A kind of 3D printer nozzle of anti-tear drop Download PDFInfo
- Publication number
- CN207643704U CN207643704U CN201721479454.7U CN201721479454U CN207643704U CN 207643704 U CN207643704 U CN 207643704U CN 201721479454 U CN201721479454 U CN 201721479454U CN 207643704 U CN207643704 U CN 207643704U
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- storage tube
- material storage
- isolating cylinder
- extrusion ball
- cylinder
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Abstract
A kind of 3D printer nozzle of anti-tear drop, including material storage tube and the nozzle in material storage tube bottom is set, columnar spray material channels are equipped in nozzle, material storage tube bottom is equipped with the opening being connected to spray material channels, it is fixed with the isolating cylinder of bottom opening in material storage tube, pressing plate is set between isolating cylinder and material storage tube, pressing plate and material storage tube inner wall, pressing plate and is isolated between drum outer wall and is equipped with sealing element, pressing plate upper surface connects push rod, and push rod stretches out material storage tube and connect with the cylinder being arranged at the top of material storage tube；The extrusion ball of diameter and isolating cylinder minor diameter fit is provided at material storage tube bottom opening, spring is set in isolating cylinder, one end of spring is fixed at the top of isolating cylinder, the other end is connect with extrusion ball, so that extrusion ball blocks spray material channels and isolating cylinder simultaneously under the action of the spring, and there are gaps between isolating cylinder bottom and material storage tube bottom.The utility model automatically controls the opening and closing of spray material channels by pressure change, can effectively prevent tear drop, high sensitivity, using reliable.
Description
Technical field
The utility model belongs to printing device technical field, and in particular to a kind of 3D printer nozzle of anti-tear drop.
Background technology
3D printing is one kind of rapid shaping technique, it be one kind based on digital model file, with powdered gold
Belong to or the adhesive materials such as plastics, constructs the technology of object by layer-by-layer printing.3D printing generally use number skill
Art file printing machine is realized, the fields such as mold manufacturing, industrial design are usually used in, after be gradually available for the direct systems of some products
It makes, parts made of the printing using this technology existing at present.3D printer and normal printer operation principle are essentially identical,
Only printed material is somewhat different, and the printed material of normal printer is ink and paper, and equipped with metal, pottery in 3D printer
Porcelain, plastics, sand etc. different " printed material " are raw material true, after printer is connect with computer, pass through computer control
System can from level to level stack up " printed material ", and the blueprint on computer is finally become in kind.
3D printer nozzle is that the important composition component of 3D printer passes through melting according to selected printed material
Extrusion process makes the uniform shakedown of thick liquid material be sprinkled upon on sectional layer.Existing fused glass pellet (FDM) 3D printer is general
For store-through the nozzle tear drop the problem of, especially after printing is complete, nozzle tear drop will influence the smooth degree of body surface, reduce
Print quality.
Utility model content
The purpose of this utility model is that：There are problems that tear drop, this practicality are new for above-mentioned existing 3D printer nozzle
Type provides a kind of 3D printer nozzle of anti-tear drop.
The technical solution adopted in the utility model is as follows：
A kind of 3D printer nozzle of anti-tear drop, including the material storage tube that is vertically arranged and the spray in material storage tube bottom is set
Mouth, nozzle is interior to be equipped with columnar spray material channels, and the bottom of material storage tube is equipped with the opening being connected to spray material channels, material storage tube housing
Equipped with heat block, the lower part of material storage tube connects feed pipe, and valve is arranged on feed pipe, bottom opening is fixed in the material storage tube
Isolating cylinder, pressing plate moving up and down is set between isolating cylinder and material storage tube, the pressing plate and material storage tube inner wall, pressing plate with every
From sealing element is equipped between drum outer wall, pressing plate upper surface is connected with push rod, and push rod stretches out material storage tube and with setting on material storage tube top
The cylinder in portion connects；The opening of the material storage tube bottom is provided with the extrusion ball of diameter and isolating cylinder minor diameter fit, it is described every
From spring is arranged in cylinder, one end of spring and the top of isolating cylinder are fixed, and the other end is connect with extrusion ball, so that extrusion ball is in bullet
Spray material channels and isolating cylinder are blocked simultaneously under the action of spring, and there are gaps between isolating cylinder bottom and material storage tube bottom.
The operation principle of the utility model is：Before material spray, the spring in isolating cylinder is in compressive state, and extrusion ball is then in bullet
The lower slight deformation of spring effect, blocks spray material channels, and the diametric fit of the internal diameter of isolating cylinder and extrusion ball, extrusion ball is being blocked
Also block isolating cylinder while spray material channels, i.e., printed material will not enter after feed pipe is sent into material storage tube spray material channels and every
From in cylinder.When printing, valve is closed after required printed material is sent into material storage tube, then starting heat block keeps printed material molten
Change, cylinder operation makes push rod band dynamic pressure plate be pressed down against printed material, and printed material is pressurized, to isolating cylinder bottom and material storage tube bottom
The extrusion ball of gap location is squeezed between portion.Due to the diameter of extrusion ball and the minor diameter fit of isolating cylinder and isolating cylinder is blocked,
That is, the volume of extrusion ball at least half is located in isolating cylinder, and between isolating cylinder bottom and material storage tube bottom there are
Gap so that portion extrusion ball expose, i.e., extrusion ball be located at the volume in spray material channels certainly less than extruding sphere volume 1/2, because
This, when printing, printed material will squeeze the lower semisphere of extrusion ball, make extrusion ball by the active force tilted upward, when
When pressing plate applies sufficiently large pressure to printed material, extrusion ball will be greater than acting force of the spring and itself weight by upward component
The sum of power, extrusion ball, which will be deformed and be moved up, makes spring further be pressurized, at this point, spray material channels, which are opened, starts material spray, and isolating cylinder
It will be squeezed pressure ball always to block, printed material is avoided to enter isolating cylinder.After the completion of printing, pressing plate stopping moves down, and printed material will
No longer extrusion ball is squeezed, extrusion ball then resets under the action of the spring, blocks spray material channels again, prevent printed material into
Lead to tear drop after entering spray material channels.
Further, it is squeeze sphere volume 1/3~1/5 that extrusion ball, which is located at the volume in spray material channels, under the volume,
Not only it can guarantee that extrusion ball effectively sealed spray material channels, but also extrusion ball can be made by larger upward component.
Further, the lower section of horizontal plane where the bottom of isolating cylinder extends to the extrusion ball centre of sphere.Compared to isolating cylinder
Bottom extends to horizontal plane where the extrusion ball centre of sphere, when extending to lower section, between isolating cylinder bottom and material storage tube bottom between
Gap smaller, extrusion ball stress surface smaller, in uniform pressure, pressure bigger, squeezing effect becomes apparent from.In addition, isolating cylinder
The effect that may also function as guiding avoids squeezing ball denection spray material channels.
Further, the arc rubber pad coordinated with extrusion ball, spring and arc rubber pad are fixed at the top of extrusion ball
Connection.Arc rubber pad can avoid spring and is in direct contact with extrusion ball, be conducive to extend the service life of extrusion ball.
Further, sealing element is rubber layer, and be bonded in side that pressing plate is contacted with material storage tube inner wall and pressing plate with
The side of drum outer wall contact is isolated, it is ensured that pressing plate keeps sealing in moving process between material storage tube and isolating cylinder, keeps away
Exempt from printed material to leak out to above pressing plate, influences to print.
Further, push rod is connect by connecting plate with cylinder.Connecting plate is driven to move up and down by cylinder, to drive
Push rod moves up and down.
Further, push rod is more, and axial symmetry is arranged centered on isolating cylinder, is conducive to pressing plate uniform force, from
And make printed material everywhere by uniform pressure, ensure extrusion ball uniform force.If printed material unbalance stress, may
Cause extrusion ball excessive by the component in certain level direction, and makes to form gap between extrusion ball and isolating cylinder, printed material
Into isolating cylinder, influence to print.
Further, it is fixedly connected at the top of the top of isolating cylinder and material storage tube.
In conclusion by adopting the above-described technical solution, the utility model has the beneficial effects that：
1. the utility model blocks spray material channels by squeezing ball and spring, and utilizes printed material to squeezing in printing
The pressure of ball automatically opens spray material channels, and when terminating to print, so that extrusion ball is resetted by spring, it is logical to block material spray again
Road can effectively prevent tear drop；
2. the utility model automatically controls the opening and closing of spray material channels by pressure change, high sensitivity, using can
It leans on；
3. blocking spray material channels at the end of making printing by the movement of motor control baffle compared with the existing technology, this practicality is new
Additional power plant need not be arranged in type, can the effectively save energy, reduce cost.
Description of the drawings
Fig. 1 is the utility model structure diagram.
It is marked in figure：1- spray material channels, 2- extrusion balls, 3- nozzles, 4- heat blocks, 5- pressing plates, 6- material storage tubes, 7- connections
Plate, 8- cylinders, 9- push rods, 10- isolating cylinders, 11- springs, 12- arc rubber pads, 13- feed pipes, 14- valves.
Specific implementation mode
All features disclosed in this specification can be with any other than mutually exclusive feature and/or step
Mode combines.
It elaborates to the utility model with reference to Fig. 1.
Embodiment 1
A kind of 3D printer nozzle of anti-tear drop, including the material storage tube 6 that is vertically arranged and the spray in 6 bottom of material storage tube is set
Mouth 3, nozzle 3 is interior to be equipped with columnar spray material channels 1, and the bottom of material storage tube 6 is equipped with the opening being connected to spray material channels 1, storing
Heat block 4 is arranged with outside cylinder 6, the lower part of material storage tube 6 connects feed pipe 13, valve 14, the material storage tube 6 is arranged on feed pipe 13
It is inside fixed with the isolating cylinder 10 of bottom opening, pressing plate 5 moving up and down, the pressure are set between isolating cylinder 10 and material storage tube 6
Sealing element is equipped between 6 inner wall of plate 5 and material storage tube, 10 outer wall of pressing plate 5 and isolating cylinder, 5 upper surface of pressing plate is connected with push rod 9, pushes away
Bar 9 stretches out material storage tube 6 and is connect with the cylinder 8 being arranged at the top of material storage tube 6；The opening of 6 bottom of the material storage tube is provided with
The extrusion ball 2 of diameter and 10 minor diameter fit of isolating cylinder, the isolating cylinder 10 is interior to be arranged spring 11, one end of spring 11 and isolating cylinder
10 top is fixed, and the other end is connect with extrusion ball 2, so that extrusion ball 2 blocks spray material channels 1 simultaneously under the action of spring 11
With isolating cylinder 10, and there are gaps between 6 bottom of 10 bottom of isolating cylinder and material storage tube.
The operation principle of the utility model is：Before material spray, the spring 11 in isolating cylinder 10 is in compressive state, extrusion ball 2
The then slight deformation under the effect of spring 11, blocks spray material channels 1, and the diametric fit of the internal diameter of isolating cylinder 10 and extrusion ball 2,
Extrusion ball 2 also blocks isolating cylinder 10 while blocking spray material channels, i.e., printed material after feed pipe 13 is sent into material storage tube 6 not
It can enter in spray material channels 1 and isolating cylinder 10.When printing, valve 14 is closed after required printed material is sent into material storage tube 6, then
Starting heat block 4 makes printed material melt, and the work of cylinder 8 makes push rod 9 be pressed down against printed material, printed material with dynamic pressure plate 5
It is pressurized, the extrusion ball 2 of gap location squeezes between 6 bottom of 10 bottom of isolating cylinder and material storage tube.Due to the diameter of extrusion ball 2
With the minor diameter fit of isolating cylinder 10 and block isolating cylinder 10, that is to say, that the volume of at least half of extrusion ball 2 is located at isolating cylinder
In 10, and there are gap so that portion extrusion ball 2 exposes between 6 bottom of 10 bottom of isolating cylinder and material storage tube, i.e., extrusion ball 2 is located at
Volume in spray material channels 1 is certainly less than the 1/2 of 2 volume of extrusion ball, and therefore, when printing, printed material will be under extrusion ball 2
Hemisphere is squeezed, and makes extrusion ball 2 by the active force tilted upward, when pressing plate 5 applies printed material sufficiently large pressure
When, extrusion ball 2 will be greater than the sum of 11 active force of spring and its own gravity by upward component, and extrusion ball 2 will be deformed and be moved up
Spring 11 is set further to be pressurized, at this point, spray material channels 1, which are opened, starts material spray, and isolating cylinder 10 will be squeezed pressure ball 2 and block always,
Printed material is avoided to enter isolating cylinder 10.After the completion of printing, the stopping of pressing plate 5 moves down, and printed material will no longer carry out extrusion ball 2
It squeezes, extrusion ball 2 then resets under the effect of spring 11, blocks spray material channels 1 again, prevents printed material from entering spray material channels 1
After lead to tear drop.
Embodiment 2
Based on embodiment 1, it is squeeze sphere volume 1/3~1/5 that extrusion ball 2, which is located at the volume in spray material channels 1, in the body
It under product, not only can guarantee that extrusion ball 2 effectively sealed spray material channels 1, but also extrusion ball 2 can be made by larger upward point
Power.
Embodiment 3
Based on embodiment 1, the bottom of isolating cylinder 10 extends to the lower section of 2 centre of sphere of extrusion ball place horizontal plane.Compared to every
Bottom from cylinder 10 extends to horizontal plane where 2 centre of sphere of extrusion ball, when extending to lower section, 10 bottom of isolating cylinder and material storage tube 6
Gap smaller between bottom, 2 stress surface smaller of extrusion ball, in uniform pressure, pressure bigger, squeezing effect is brighter
It is aobvious.In addition, isolating cylinder 10 may also function as the effect of guiding, extrusion ball 2 is avoided to deviate spray material channels 1.
Embodiment 4
Based on above-described embodiment, the top of extrusion ball 2 is fixed with the arc rubber pad 12 coordinated with extrusion ball 2, spring 11
It is connect with arc rubber pad 12.Arc rubber pad 12 can avoid spring 11 and is in direct contact with extrusion ball 2, be conducive to extend extrusion ball
2 service life.
Embodiment 5
Based on above-described embodiment, sealing element is rubber layer, and be bonded in the side that pressing plate 5 is contacted with 6 inner wall of material storage tube with
And the side that pressing plate 5 is contacted with 10 outer wall of isolating cylinder, it is ensured that pressing plate 5 in moving process with material storage tube 6 and isolating cylinder 10
Between keep sealing, avoid printed material from leaking out to the top of pressing plate 5, influence to print.
Embodiment 6
Based on embodiment 1, push rod 9 is connect by connecting plate 7 with cylinder 8.Connecting plate 7 is driven to move up and down by cylinder 8,
To drive push rod 9 to move up and down.
Embodiment 7
Based on embodiment 6, push rod 9 is more, and axial symmetry is arranged centered on isolating cylinder 10, is conducive to 5 stress of pressing plate
Uniformly, to make printed material by uniform pressure, ensure 2 uniform force of extrusion ball everywhere.If printed material unbalance stress,
The component that extrusion ball 2 then be may result in by certain level direction is excessive, and makes between being formed between extrusion ball 2 and isolating cylinder 10
Gap, printed material enter isolating cylinder 10, influence to print.
Embodiment 8
Based on embodiment 1, the top of isolating cylinder 10 is fixedly connected with the top of material storage tube 6.
It is the embodiments of the present invention as described above.The utility model is not limited to the above embodiment, anyone
It should learn the structure change made under the enlightenment of the utility model, it is every that there is same or similar skill with the utility model
Art scheme, each falls within the scope of protection of the utility model.
Claims (8)
1. a kind of 3D printer nozzle of anti-tear drop, including the material storage tube (6) being vertically arranged and setting are in material storage tube (6) bottom
Nozzle (3), nozzle (3) is interior to be equipped with columnar spray material channels (1), and the bottom of material storage tube (6) is equipped with to be connected to spray material channels (1)
Opening, be arranged with heat block (4) outside material storage tube (6), the lower part connection feed pipe (13) of material storage tube (6), on feed pipe (13)
Valve (14) is set, which is characterized in that the isolating cylinder (10) of bottom opening, isolating cylinder (10) are fixed in the material storage tube (6)
Pressing plate moving up and down (5) is set between material storage tube (6), the pressing plate (5) and material storage tube (6) inner wall, pressing plate (5) with every
From sealing element is equipped between cylinder (10) outer wall, pressing plate (5) upper surface is connected with push rod (9), and push rod (9) stretches out material storage tube (6) simultaneously
It is connect with the cylinder (8) being arranged at the top of material storage tube (6)；The opening of material storage tube (6) bottom is provided with diameter and is isolated
The extrusion ball (2) of cylinder (10) minor diameter fit, the interior setting spring (11) of the isolating cylinder (10), one end of spring (11) and isolating cylinder
(10) top is fixed, and the other end is connect with extrusion ball (2), so that extrusion ball (2) is blocked simultaneously under the action of spring (11)
Spray material channels (1) and isolating cylinder (10), and there are gaps between isolating cylinder (10) bottom and material storage tube (6) bottom.
2. a kind of 3D printer nozzle of anti-tear drop according to claim 1, which is characterized in that extrusion ball (2) position
In 1/3~1/5 that the volume in spray material channels (1) is extruding sphere volume.
3. a kind of 3D printer nozzle of anti-tear drop according to claim 1, which is characterized in that the isolating cylinder (10)
The lower section of horizontal plane where bottom extends to extrusion ball (2) centre of sphere.
4. a kind of 3D printer nozzle of anti-tear drop according to any one of claim 1-3, which is characterized in that described
The arc rubber pad (12) with extrusion ball (2) cooperation, spring (11) and arc rubber pad (12) are fixed at the top of extrusion ball (2)
Connection.
5. a kind of 3D printer nozzle of anti-tear drop according to any one of claim 1-3, which is characterized in that described
Sealing element is rubber layer, and is bonded in side and pressing plate (5) and isolating cylinder that pressing plate (5) is contacted with material storage tube (6) inner wall
(10) side of outer wall contact.
6. a kind of 3D printer nozzle of anti-tear drop according to claim 1, which is characterized in that the push rod (9) passes through
Connecting plate (7) is connect with cylinder (8).
7. a kind of 3D printer nozzle of anti-tear drop according to claim 1 or 6, which is characterized in that the push rod (9) is
More, and axial symmetry is arranged centered on isolating cylinder (10).
8. a kind of 3D printer nozzle of anti-tear drop according to claim 1, which is characterized in that the isolating cylinder (10)
It is fixedly connected at the top of top and material storage tube (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721479454.7U CN207643704U (en) | 2017-11-08 | 2017-11-08 | A kind of 3D printer nozzle of anti-tear drop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721479454.7U CN207643704U (en) | 2017-11-08 | 2017-11-08 | A kind of 3D printer nozzle of anti-tear drop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207643704U true CN207643704U (en) | 2018-07-24 |
Family
ID=62885481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721479454.7U Expired - Fee Related CN207643704U (en) | 2017-11-08 | 2017-11-08 | A kind of 3D printer nozzle of anti-tear drop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207643704U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021017415A1 (en) * | 2019-07-29 | 2021-02-04 | 华南理工大学 | Liquid material printhead for 3d printer |
| WO2022180290A1 (en) * | 2021-02-24 | 2022-09-01 | M. Torres Diseños Industriales, S.A.U. | Head for additive production machine, machine and system comprising the head |
-
2017
- 2017-11-08 CN CN201721479454.7U patent/CN207643704U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021017415A1 (en) * | 2019-07-29 | 2021-02-04 | 华南理工大学 | Liquid material printhead for 3d printer |
| WO2022180290A1 (en) * | 2021-02-24 | 2022-09-01 | M. Torres Diseños Industriales, S.A.U. | Head for additive production machine, machine and system comprising the head |
| ES2922048A1 (en) * | 2021-02-24 | 2022-09-07 | M Torres Disenos Ind S A Unipersonal | Heads for additive manufacturing machine, machine and system that includes said head (Machine-translation by Google Translate, not legally binding) |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210129 Address after: Room 1001-3, building 6, Xincheng Science Park, 588 Yuelu West Avenue, jianshanhu community, Changsha hi tech Development Zone, Changsha City, Hunan Province, 410000 Patentee after: Changsha Fandian Technology Co.,Ltd. Address before: 12b, building 1, rainbow Xindu, CaiTian Road, Futian street, Futian District, Shenzhen, Guangdong 518000 Patentee before: SHENZHEN HAOCHENGDA OFFICE EQUIPMENT Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180724 Termination date: 20211108 |