CN217968429U - Tuyere device for 3D printer - Google Patents

Abstract

The utility model discloses a tuyere device for a 3D printer, which relates to the technical field of 3D printers and comprises a machine body, wherein water tanks are symmetrically arranged at the lower end of the machine body, an air inlet hole is formed at the rear end of each water tank, a wire feeding throat pipe is arranged at the lower end of each water tank, a spray head is arranged at the lower end of each wire feeding throat pipe, and a wind nozzle is arranged around the outer part of each spray head; the beneficial effects are that: through the setting in the annular wind channel of nozzle lower extreme, can 360 degrees annular go out the blowout hot-blastly, guarantee that the consumptive material of extruding from the shower nozzle does not have any dead angle of being heated, annular wind channel spun wind heated area is big, but be favorable to the printing model of crystallization material fully annealed, and the annular wind channel is to the inboard slope, just to the below region of shower nozzle, the position of the consumptive material is extruded to the shower nozzle below to the hot-blastly that can be accurate, make the accurate uniform blow of its model heated, and along with the removal of shower nozzle, can be instant blow the heat fast of the consumptive material of extruding, crystallization annealing, thereby reach the purpose of reinforcing material performance.

Description

Tuyere device for 3D printer

Technical Field

The utility model relates to a 3D printer technical field especially relates to a tuyere device for 3D printer.

Background

The 3D printing principle related to the 3D printer is based on a fused deposition technology (FDM), filamentous thermoplastic materials are heated and melted through a spray head, a fine nozzle is arranged at the bottom of the spray head, the spray head moves to a specified position according to data of a 3D model under the control of a computer, after deposition of one layer is completed, a workbench descends by one layer in the Z-axis direction according to a preset increment, the materials are sprayed out to be deposited on the solidified materials of the previous layer, and the filaments are deposited layer by layer to form a final finished product;

common filamentous thermoplastic materials for 3D printing are divided into two types, namely amorphous polymers and crystalline polymers, wherein the crystalline polymers have stronger performance, and are often used for manufacturing models or final finished parts in the fields of mold manufacturing, industrial design, product design, tool fixtures, aerospace, automobiles and the like, such as PEEK, PEKK, PPS, PACF and the like;

the 3D printer of the FDM technology prints crystalline macromolecules, and the crystalline macromolecules are usually used directly without heat treatment, so that the materials cannot be crystallized, and the optimal performance is achieved;

and other heat treatment modes are that the printed model part is placed in an oven to carry out secondary heating and annealing on the part so as to achieve the purpose of increasing strength and hardness.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a tuyere device for 3D printer just in order to solve above-mentioned problem.

In order to realize the purpose, the utility model adopts the following technical scheme:

the utility model provides a tuyere device for 3D printer, includes the organism, the water tank is installed to the lower extreme symmetry of organism, the inlet port has been seted up to the rear end of water tank, every the lower extreme of water tank is installed and is advanced a venturi, the shower nozzle is installed to the lower extreme that advances a venturi, the outside surrounding of shower nozzle is provided with spouts the tuyere, annular air duct has been seted up to spout the lower extreme of tuyere, just annular air duct inclines to the inboard, annular air duct passes through the inlet port intercommunication on inlet throat and the water tank, heating device is installed to one side of spouting the tuyere.

Preferably, the heating device comprises a heating block, a first heating pipe and a second heating pipe, the heating block and one side of the air nozzle are integrally formed, and the first heating pipe and the second heating pipe are installed in the heating block through holes.

Preferably, the lower end of the water tank is provided with a first threaded hole communicated with the air inlet, a jackscrew is screwed into the first threaded hole, and the water tank and the upper end of the air inlet throat pipe are fixed through the jackscrew.

Preferably, the lower end of the air inlet throat pipe is provided with threads, the upper end of the heating block is provided with a second threaded hole matched with the lower end of the air inlet throat pipe, and the second threaded hole is communicated with the annular air duct.

Preferably, the air nozzle and the heating block are both brass.

Preferably, the two water tanks are communicated through a communication pipe.

Preferably, a fan is fixedly mounted on one side of each water tank.

Preferably, the annular air duct is inclined inward in a range of 30 to 60 °.

Compared with the prior art, the utility model provides a tuyere device for 3D printer possesses following beneficial effect:

1. through the setting of the annular wind channel of air nozzle lower extreme, can 360 degrees annular play blowout is hot-blast, guarantee that the consumptive material of extruding from the shower nozzle does not have any dead angle of being heated, annular wind channel spun wind heated area is big, but be favorable to the printing model of crystallization material fully annealed, and the annular wind channel inclines to the inboard, just to the below region of shower nozzle, can be accurate blow hot-blast position of extruding the consumptive material to the shower nozzle below, make the accurate uniform blow of its model heated, and along with the removal of shower nozzle, can be instant blow the heat quick consumptive material of extruding, crystallization annealing, make model shaping effect better.

2. Through the ingenious design of the annular air duct at the lower end of the air nozzle, the heating area of the annular air duct is increased, the blocking air duct is reduced, the larger air duct and the smaller blocking area are favorable for the promotion of hot air temperature, the flow is larger under the same pressure, and the requirement that the model is heated can be met in a short time.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of the installation structure of the water tank, the air nozzle and the nozzle of the present invention;

FIG. 3 is a schematic view of the rear side structure of the water tank, the air nozzle and the nozzle of the present invention;

FIG. 4 is a schematic side view of the water tank, the air nozzle and the nozzle of the present invention;

FIG. 5 is a schematic view of the installation structure of the air nozzle and the nozzle of the present invention;

fig. 6 is a schematic structural view of the air nozzle of the present invention;

fig. 7 is a schematic bottom structure view of the air nozzle of the present invention;

fig. 8 is a partial sectional structural view of the air nozzle of the present invention.

The reference numerals are illustrated below:

1. a body; 2. a water tank; 201. a first threaded hole; 3. a spray head; 4. a communicating pipe; 5. a blast nozzle; 501. an annular air duct; 6. a fan; 7. an air inlet; 8. a filament feeding throat pipe; 9. a heating device; 901. a heating block; 902. a first heating pipe; 903. a second heating pipe; 904. a second threaded hole; 10. an air inlet throat.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-8, a nozzle device for a 3D printer includes a body 1, water tanks 2 are symmetrically installed at a lower end of the body 1, an air inlet 7 is installed at a rear end of each water tank 2, the air inlet 7 is used for introducing an air flow into an air inlet throat 10, and further ejecting air from an annular air duct 501 at a lower end of a nozzle 5, a filament inlet throat 8 is installed at a lower end of each water tank 2, the filament inlet throat 8 is used for installing and connecting the water tanks 2 and the nozzles 3, the nozzles 3 are installed at a lower end of the filament inlet throat 8, the nozzles 3 are used for ejecting a required model, the model is a crystallizable material, generally a high polymer material, the nozzles 5 are circumferentially arranged outside the nozzles 3, the nozzles 5 move synchronously with the movement of the nozzles 3, so that the nozzles 5 perform crystallization annealing on a model ejected below the nozzles 3, and further the model is blown by air, the air is used for increasing the performance of the material, such as breaking strength, tensile strength, impact strength, and the like, the lower end of the nozzles 5 is provided with an annular air duct 501, so that the model can be inclined, the annular air inlet duct 501 can be heated more uniformly, the nozzle 501 can be used for heating the air inlet throat 501, and the air flow of the annular air tank 2 can be heated, and the air inlet throat 501 can be further used for heating the annular air inlet duct 501, and the air inlet throat 501 can be further used for heating device 501, and the annular air flow of the annular air inlet throat 10;

the heating device 9 comprises a heating block 901, a first heating pipe 902 and a second heating pipe 903, the heating block 901 and one side of the air nozzle 5 are integrally formed, the first heating pipe 902 and the second heating pipe 903 are installed in the heating block 901 through holes, the heating block 901 is provided with through holes matched with the first heating pipe 902 and the second heating pipe 903, the first heating pipe 902 and the second heating pipe 903 are convenient to install, the first heating pipe 902 and the second heating pipe 903 can heat the heating block 901, the heating block 901 and the air nozzle 5 can be heated, and further the air in the annular air duct 501 can be hot air;

the lower end of the water tank 2 is provided with a first threaded hole 201 communicated with the air inlet 7, a jackscrew is screwed into the first threaded hole 201, and the water tank 2 and the upper end of the air inlet throat pipe 10 are fixed through the jackscrew, so that the air inlet throat pipe 10 is convenient to mount;

the lower end of the air inlet throat pipe 10 is provided with threads, the upper end of the heating block 901 is provided with a second threaded hole 904 matched with the lower end of the air inlet throat pipe 10, the lower end of the air inlet throat pipe 10 is in threaded connection with the second threaded hole 904, and the second threaded hole 904 is communicated with the annular air duct 501, so that air flowing out of the air inlet throat pipe 10 can flow into the annular air duct 501 conveniently;

the air nozzle 5 and the heating block 901 are both made of brass, so that the heating block 901 and the air nozzle 5 can be heated conveniently, and further, the air in the annular air duct 501 can be hot air;

the two water tanks 2 are communicated through a communicating pipe 4;

a fan 6 is fixedly arranged on one side of each water tank 2, and the model can be cooled under general conditions;

the annular air duct 501 is inclined towards the inner side by 30 degrees, so that the wind blowing the annular air duct 501 to the model below the spray head 3 can be well blown, and the heating effect of the model can be better.

The working principle is as follows: the 3D printer is at the during operation, start first heating pipe 902 and second heating pipe 903, first heating pipe 902 and second heating pipe 903 can heat heating block 901, and then make tuyere 5 be heated, outside air current enters into in the throat 10 that admits air through inlet port 7, the rethread throat 10 that admits air enters into tuyere 5's annular wind channel 501 in, because tuyere 5 is heated, so wind in the annular wind channel 501 is hot-blast, organism 1 opens the back, shower nozzle 3 will spout the model, the model is lower from shower nozzle 3 play back degree of crystallinity, hot-blast in the annular wind channel 501 of tuyere 5 lower extreme will blow to the model this moment, can make the model recrystallize, thereby reach the purpose of reinforcing material performance.

Above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the design of the present invention, equivalent replacement or change should be covered within the protection scope of the present invention.

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (8)

1. The utility model provides a tuyere device for 3D printer, includes organism (1), its characterized in that: water tank (2) are installed to the lower extreme symmetry of organism (1), inlet port (7) have been seted up to the rear end of water tank (2), every advance a throat (8) are installed to the lower extreme of water tank (2), shower nozzle (3) are installed to the lower extreme that advances a throat (8), shower nozzle (3) outside surrounding is provided with blast nozzle (5), annular wind channel (501) have been seted up to the lower extreme of blast nozzle (5), just annular wind channel (501) inboard slope, annular wind channel (501) are through inlet port (7) intercommunication on intake throat (10) and the water tank (2), heating device (9) are installed to one side of blast nozzle (5).

2. The tuyere device for a 3D printer according to claim 1, characterized in that: the heating device (9) comprises a heating block (901), a first heating pipe (902) and a second heating pipe (903), wherein the heating block (901) and one side of the air nozzle (5) are integrally formed, and the first heating pipe (902) and the second heating pipe (903) are installed in the heating block (901) through holes.

3. The tuyere device for a 3D printer according to claim 2, characterized in that: the lower end of the water tank (2) is provided with a first threaded hole (201) communicated with the air inlet hole (7), a jackscrew is screwed into the first threaded hole (201), and the water tank (2) and the upper end of the air inlet throat pipe (10) are fixed through the jackscrew.

4. The tuyere device for a 3D printer according to claim 3, characterized in that: the lower end of the air inlet throat pipe (10) is provided with threads, the upper end of the heating block (901) is provided with a second threaded hole (904) matched with the lower end of the air inlet throat pipe (10), and the second threaded hole (904) is communicated with the annular air duct (501).

5. The tuyere device for a 3D printer according to claim 4, characterized in that: the air nozzle (5) and the heating block (901) are both made of brass.

6. The tuyere device for a 3D printer according to claim 1, characterized in that: the two water tanks (2) are communicated through a communicating pipe (4).

7. The tuyere device for a 3D printer according to claim 1, characterized in that: and a fan (6) is fixedly arranged on one side of each water tank (2).

8. The tuyere device for a 3D printer according to claim 1, characterized in that: the annular air duct (501) is inclined inwards by 30-60 degrees.

Images