CN212194221U - Novel 3D printing nozzle with linear focusing function - Google Patents
Novel 3D printing nozzle with linear focusing function Download PDFInfo
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- CN212194221U CN212194221U CN202020211500.0U CN202020211500U CN212194221U CN 212194221 U CN212194221 U CN 212194221U CN 202020211500 U CN202020211500 U CN 202020211500U CN 212194221 U CN212194221 U CN 212194221U
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- aerodynamic lens
- outlet
- shower nozzle
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Abstract
The utility model discloses a novel 3D printing nozzle with linear focusing, which comprises a nozzle body, a powder feeding pipe and an aerodynamic lens; the top of the spray head body is provided with a laser inlet, the bottom of the spray head body is provided with a spray head outlet, the top of the spray head body is provided with a buffer cavity, the buffer cavity is communicated with the laser inlet, and the bottom of the buffer cavity is provided with a laser outlet; the aerodynamic lens is located the shower nozzle originally internally, the top and the cushion chamber of aerodynamic lens are connected, the bottom and the bottom of shower nozzle body of aerodynamic lens are connected, aerodynamic lens respectively with laser outlet and shower nozzle export intercommunication, aerodynamic lens is including a plurality of lens cavitys that from top to bottom set up, the bottom of every lens cavity is equipped with the penetration hole, laser inlet, laser outlet, penetration hole and shower nozzle export are located same straight line, send the powder pipe to pass shower nozzle body and aerodynamic lens intercommunication, adjust the high position of shower nozzle body and machined part when being convenient for 3D prints.
Description
Technical Field
The utility model relates to a 3D printing apparatus technical field, in particular to novel 3D printing nozzle of linear focusing.
Background
3D printing is an additive manufacturing technique, i.e., rapid prototyping machine, that produces three-dimensional objects by printing layers of bondable material, such as metal powder or plastic, against a digital model file. Some 3D printers pass through the powder shower nozzle and spray the powder on the machined part at present stage, and rethread laser heating makes the powder melt in order to make the product of demand, and the powder shower nozzle on the market all adopts the toper structure at present stage, and the powder passes through the powder passageway focus of slope promptly on a point, and this point will be in the position that the machined part need be processed just in, and then is melted with the laser contact, so the problem that brings is exactly that the distance of sending powder shower nozzle and machined part is fixed, can't adjust conveniently, makes the technology complicated.
Simultaneously, the end cap appears easily in current 3D print head, phenomenon such as the disconnected festival of raw materials, and it is not enough to be the heat dissipation to be its reason, and current print head heat dissipation is not enough, and shower nozzle inner space is intensive, can't effectively dispel the heat.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a novel 3D of linear focusing prints shower nozzle, it is fixed with the distance of machined part to have solved the powder feeding shower nozzle, can't carry out the problem of adjusting conveniently.
The technical scheme of the utility model is that: a novel 3D printing nozzle with linear focusing comprises a nozzle body, a powder feeding pipe and an aerodynamic lens; the top of the spray head body is provided with a laser inlet, the bottom of the spray head body is provided with a spray head outlet, the top of the spray head body is provided with a buffer cavity, the buffer cavity is communicated with the laser inlet, and the bottom of the buffer cavity is provided with a laser outlet; the aerodynamic lens is located the shower nozzle body, the top and the buffer chamber of aerodynamic lens are connected, the bottom and the bottom of shower nozzle body of aerodynamic lens are connected, aerodynamic lens respectively with laser outlet and shower nozzle export intercommunication, aerodynamic lens is including a plurality of lens cavitys that set up from top to bottom, the bottom of every lens cavity is equipped with the penetration hole, laser inlet, laser outlet, penetration hole and shower nozzle export are located same straight line, send the powder pipe to pass shower nozzle body and aerodynamic lens intercommunication. Through setting up aerodynamic lens and powder feeding pipe together in the shower nozzle body for laser and wait to process the powder and be in same straight line, adjust the high position of shower nozzle body and machined part when being convenient for 3D prints, and improved the powder feeding precision.
Furthermore, the volume of the lens cavities is gradually reduced from top to bottom, and the diameter of the penetrating holes is gradually reduced from top to bottom. Make a plurality of lens cavity forms the pressure differential from top to bottom for gas carries the powder to jet out the shower nozzle body from top to bottom, and focuses on a straight line at this in-process gradually with the powder.
Furthermore, the powder feeding pipe is obliquely arranged, and one end of the center line of the powder feeding pipe points to the penetrating hole. The powder in the powder feeding pipe can directly enter the penetrating hole, so that the powder is linearly gathered in the aerodynamic lens, and a precise particle beam is formed through the aerodynamic lens.
Further, the bottoms of the lens cavities are obliquely arranged, the penetrating hole is located in the center of the bottom, and the bottoms of the lens cavities are inclined towards the penetrating hole. By arranging the bottom of the lens chamber to be inclined toward the penetration hole, dust falling in each lens chamber is prevented.
Further, the novel 3D printing nozzle of linear focusing still includes sealing glass, sealing glass installs in laser exit, seals the clearance between cushion chamber and the aerodynamic lens. The sealing glass is used for isolating the powder and simultaneously does not obstruct the laser from passing through.
Further, the novel 3D of linear focus prints the shower nozzle still includes a plurality of fin, the inner wall of shower nozzle body is equipped with the cooling chamber, and the cooling chamber is equipped with coolant liquid entry and coolant liquid export, fills the coolant liquid in the cooling chamber, and a plurality of fin one end butt respectively in aerodynamic lens, other end butt cooling chamber. Through setting up the fin, supplementary aerodynamic lens dispels the heat, and the fin is with heat conduction to cooling chamber simultaneously, further strengthens the radiating effect, avoids shower nozzle body high temperature.
Further, the cooling liquid inlet and the cooling liquid outlet are respectively arranged on the side wall of the spray head body, the cooling liquid inlet is connected with the water inlet pipe, and the cooling liquid outlet is connected with the water outlet pipe. The cooling cavity and the external cooling liquid form a closed loop, the heat absorbed by the radiating fins from the aerodynamic lens is absorbed, and the heat is taken out of the sprayer body, so that the effect of timely cooling is achieved.
Further, the powder feeding pipe is connected with an external powder feeding machine, an external laser is arranged at the laser inlet, and laser is emitted from the laser inlet.
According to the working principle of the novel linearly-focused 3D printing nozzle, an external laser is installed at a laser inlet, laser penetrates through the whole aerodynamic lens through the laser inlet and is emitted from a nozzle outlet, a powder feeding pipe is communicated with the aerodynamic lens through an inclined angle, powder is fed into the aerodynamic lens, the powder is linearly concentrated in the aerodynamic lens, an accurate particle beam is formed through the aerodynamic lens, meanwhile, gas forms a pressure difference in a cavity of the aerodynamic lens from top to bottom, so that the powder carried by the gas is emitted out of the nozzle body from top to bottom, meanwhile, the laser and the particle beam are on the same straight line, the height positions of the nozzle and a workpiece are conveniently adjusted during 3D printing, cooling liquid is stored in a cooling cavity, and a closed loop is formed with the external cooling liquid through the cooling liquid inlet and the cooling liquid outlet, the heat absorbed by the radiating fins from the aerodynamic lens is absorbed and taken out of the sprayer body, and the effect of timely cooling is achieved.
Compared with the prior art, the utility model, following beneficial effect has:
the utility model discloses a novel 3D of linear focusing prints shower nozzle sets up in the shower nozzle originally internally through with aerodynamic lens with sending the powder pipe together for laser and pending processing powder are in same straight line, adjust the high position of shower nozzle body and machined part when being convenient for 3D prints, and improved and sent the powder precision.
The utility model discloses a novel 3D of linear focusing prints shower nozzle, through setting up cooling chamber and fin, the cooling chamber forms closed loop with external cooling liquid, absorbs the heat that the fin absorbed from aerodynamic lens, takes out this shower nozzle body, plays the effect of in time cooling.
Drawings
Fig. 1 is the structure diagram of the novel 3D printing nozzle with linear focusing of the present invention.
Fig. 2 is a cross-sectional view of the novel 3D printing nozzle of the present invention.
Fig. 3 is a cross-sectional view of the novel 3D printing nozzle with linear focusing according to embodiment 2 of the present invention.
Fig. 4 is a cross-sectional view of another novel linearly focused 3D printing head according to embodiment 2 of the present invention.
Fig. 5 is a schematic diagram of the utility model discloses a novel 3D of linear focusing prints powder formation linear focusing in the shower nozzle.
The nozzle comprises a nozzle body 1, a powder feeding pipe 2, an aerodynamic lens 3, sealing glass 4, a cooling fin 5, a laser inlet 6, a nozzle outlet 7, a buffer cavity 8, a laser outlet 9, a lens cavity 10, a penetrating hole 11, a cooling cavity 12, a cooling liquid inlet 13 and a cooling liquid outlet 14.
Detailed Description
The present invention will be described in further detail with reference to examples, but the present invention is not limited thereto.
Example 1
As shown in fig. 1 and fig. 2, the present embodiment provides a novel 3D printing nozzle with linear focusing, which includes a nozzle body 1, a powder feeding pipe 2, an aerodynamic lens 3, a sealing glass 4, and a heat sink 5.
As shown in fig. 1 and 2, the nozzle body is in a pen head shape, the top of the nozzle body is provided with a laser inlet 6, the bottom of the nozzle body is provided with a nozzle outlet 7, the top of the nozzle body is provided with a buffer cavity 8, the buffer cavity is communicated with the laser inlet, the bottom of the buffer cavity is provided with a laser outlet 9, an external laser is arranged at the laser inlet, and laser is injected from the laser inlet.
As shown in fig. 1 and 2, the aerodynamic lens is located in the nozzle body, the top of the aerodynamic lens is connected with the buffer cavity, the sealing glass is installed at the laser outlet, the gap between the buffer cavity and the aerodynamic lens is sealed, and the sealing glass is used for isolating powder and simultaneously not blocking the laser from passing through; the bottom of aerodynamic lens is connected with the bottom of shower nozzle body, aerodynamic lens communicates with laser outlet and shower nozzle export respectively, aerodynamic lens is including a plurality of lens cavity 10 that from top to bottom set up, the bottom of every lens cavity is equipped with the penetration hole 11, laser inlet, the laser outlet, penetration hole and shower nozzle export are located same straight line, the volume of a plurality of lens cavities reduces from top to bottom gradually, the diameter of a plurality of penetration holes reduces from top to bottom gradually, make a plurality of lens cavities form the pressure differential from top to bottom, make gaseous powder that carries jet out the shower nozzle body from top to bottom.
As shown in fig. 1 and fig. 2, a cooling chamber 12 is disposed on an inner wall of the nozzle body, the cooling chamber is provided with a cooling liquid inlet 13 and a cooling liquid outlet 14, cooling liquid is filled in the cooling chamber, the cooling liquid inlet and the cooling liquid outlet are respectively disposed on a side wall of the nozzle body, the cooling liquid inlet is connected with a water inlet pipe, the cooling liquid outlet is connected with a water outlet pipe, one end of each of a plurality of cooling fins is abutted to the aerodynamic lens, the other end of each of the plurality of cooling fins is abutted to the cooling chamber, the cooling fins are made of metal materials with good heat conductivity, the cooling fins are arranged to assist the aerodynamic lens in heat dissipation, meanwhile, the cooling fins conduct heat to the cooling chamber, the cooling chamber and external cooling liquid form a closed loop, heat absorbed by the cooling fins and absorbed from the aerodynamic lens.
According to the working principle of the novel linearly-focused 3D printing nozzle, an external laser is installed at a laser inlet, laser penetrates through the whole aerodynamic lens through the laser inlet and is emitted from a nozzle outlet, a powder feeding pipe is communicated with the aerodynamic lens through an inclined angle, powder is fed into the aerodynamic lens, the powder is linearly concentrated in the aerodynamic lens, an accurate particle beam is formed through the aerodynamic lens, meanwhile, gas forms a pressure difference in a cavity of the aerodynamic lens from top to bottom, so that the powder carried by the gas is emitted out of the nozzle body from top to bottom, meanwhile, the laser and the particle beam are on the same straight line, the height positions of the nozzle and a workpiece are conveniently adjusted during 3D printing, cooling liquid is stored in a cooling cavity, and a closed loop is formed with the external cooling liquid through the cooling liquid inlet and the cooling liquid outlet, the heat absorbed by the radiating fins from the aerodynamic lens is absorbed and taken out of the sprayer body, and the effect of timely cooling is achieved.
As shown in fig. 5, according to the principle that the powder in the novel linearly focusing 3D printing nozzle forms linear focusing, when the pressure in one side of the penetration hole is P and the pressure in the other side of the penetration hole is P ', P > P', under the driving of the pressure difference between the upper lens cavity and the lower lens cavity, the powder particles will approach the axis and pass through the penetration hole due to the drag force of the high-speed airflow when the airflow carries the powder particles through the penetration hole, and then the powder particles will remain near the axis due to the small radial force action on the powder particles near the axis because the speed of radial diffusion of the gas is small, and the airflow will diffuse to the whole lens cavity, so that the powder particles are separated from the original airflow and gathered near the axis, and the primary reason why the linear focusing of the powder particles can occur is the difference between the inertia of the gas molecules.
Example 2
As shown in fig. 3 and 4, the present embodiment is different from embodiment 1 in that the bottoms of a plurality of lens cavities are obliquely arranged, the penetration hole is located at the center of the bottom, and the bottoms of the lens cavities are inclined toward the penetration hole. By arranging the bottom of the lens chamber to be inclined toward the penetration hole, dust falling in each lens chamber is prevented.
As described above, the present invention can be realized well, and the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention; all equivalent changes and modifications made according to the present invention are intended to be covered by the scope of the claims of the present invention.
Claims (8)
1. A novel 3D printing nozzle with linear focusing is characterized by comprising a nozzle body, a powder feeding pipe and an aerodynamic lens;
the top of the spray head body is provided with a laser inlet, the bottom of the spray head body is provided with a spray head outlet, the top of the spray head body is provided with a buffer cavity, the buffer cavity is communicated with the laser inlet, and the bottom of the buffer cavity is provided with a laser outlet;
the aerodynamic lens is located the shower nozzle body, the top and the buffer chamber of aerodynamic lens are connected, the bottom and the bottom of shower nozzle body of aerodynamic lens are connected, aerodynamic lens respectively with laser outlet and shower nozzle export intercommunication, aerodynamic lens is including a plurality of lens cavitys that set up from top to bottom, the bottom of every lens cavity is equipped with the penetration hole, laser inlet, laser outlet, penetration hole and shower nozzle export are located same straight line, send the powder pipe to pass shower nozzle body and aerodynamic lens intercommunication.
2. The linearly focusing novel 3D printing nozzle as claimed in claim 1, wherein the volume of the lens cavities is gradually reduced from top to bottom, and the diameter of the penetrating holes is gradually reduced from top to bottom.
3. The novel linear focusing 3D printing nozzle as claimed in claim 1, wherein the powder feeding pipe is arranged obliquely, and one end of the center line of the powder feeding pipe points to the penetrating hole.
4. The novel linear focusing 3D printing nozzle as claimed in claim 1, wherein the bottoms of the plurality of lens cavities are inclined, the penetrating hole is located at the center of the bottom, and the bottom of the lens cavity is inclined towards the penetrating hole.
5. The novel linear focusing 3D printing nozzle as claimed in claim 1, further comprising a sealing glass, wherein the sealing glass is installed at the laser outlet to seal the gap between the buffer chamber and the aerodynamic lens.
6. The novel linear focusing 3D printing nozzle as claimed in claim 1, further comprising a plurality of cooling fins, wherein the inner wall of the nozzle body is provided with a cooling cavity, the cooling cavity is provided with a cooling liquid inlet and a cooling liquid outlet, the cooling cavity is filled with cooling liquid, and one end of each of the plurality of cooling fins abuts against the aerodynamic lens and the other end of each of the plurality of cooling fins abuts against the cooling cavity.
7. The novel linear focusing 3D printing nozzle as claimed in claim 6, wherein the cooling liquid inlet and the cooling liquid outlet are respectively disposed on the side wall of the nozzle body, the cooling liquid inlet is connected to a water inlet pipe, and the cooling liquid outlet is connected to a water outlet pipe.
8. The novel linear focusing 3D printing nozzle as claimed in claim 1, wherein the powder feeding pipe is connected to an external powder feeder, an external laser is provided at the laser inlet, and the laser is emitted from the laser inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020211500.0U CN212194221U (en) | 2020-02-26 | 2020-02-26 | Novel 3D printing nozzle with linear focusing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020211500.0U CN212194221U (en) | 2020-02-26 | 2020-02-26 | Novel 3D printing nozzle with linear focusing function |
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| Publication Number | Publication Date |
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| CN212194221U true CN212194221U (en) | 2020-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020211500.0U Active CN212194221U (en) | 2020-02-26 | 2020-02-26 | Novel 3D printing nozzle with linear focusing function |
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|---|---|
| CN (1) | CN212194221U (en) |
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2020
- 2020-02-26 CN CN202020211500.0U patent/CN212194221U/en active Active
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