CN211542406U

CN211542406U - 3D printer high-frequency heating shower nozzle

Info

Publication number: CN211542406U
Application number: CN201922341594.3U
Authority: CN
Inventors: 刘健美; 王一可; 张昕博
Original assignee: Henan Suwei Electronic Technology Co ltd
Current assignee: Henan Suwei Electronic Technology Co ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-09-22
Anticipated expiration: 2029-12-23

Abstract

The utility model relates to the technical field of 3D printers, and discloses a high-frequency heating spray head of a 3D printer, which comprises a spray head, a heat insulation pipe, a heating ring, a heat insulation connecting piece and a choke; a counter bore is formed at the feed end of the spray head; the length of the heat insulation pipe is greater than the depth of the counter bore, one end of the heat insulation pipe is inserted into the counter bore, and the other end of the heat insulation pipe is connected with the bottom of the throat pipe; the heating ring is sleeved outside the spray head, the base body of the heating ring is made of insulating materials, and a coil surrounding the spray head is arranged in the heating ring; the feed end of the spray head is connected with the throat pipe through a heat insulation connecting piece. The utility model has the advantages of the heating is even, rate of heating is fast, electric heat conversion efficiency is high, can improve the play silk effect of shower nozzle simultaneously, improves the printing quality.

Description

3D printer high-frequency heating shower nozzle

Technical Field

The utility model relates to a 3D printer technical field, concretely relates to 3D printer high-frequency heating shower nozzle.

Background

The used shower nozzle heating part of present 3D printer belongs to the heating pipe that the resistance wire encircles and form, passes to the 3D printer shower nozzle to the heat through contact conduction mode on, because heating pipe and shower nozzle contact inhomogeneous can lead to shower nozzle rate of heating slow, printer start preheating time generally needs 1 to 2 minutes, and traditional heating form still has the problem that electric heat conversion efficiency is low, the life-span is short, the short circuit easily appears moreover. In addition, the choke on the current 3D print head adopts stainless steel material more, because the heat conduction between shower nozzle and the choke, the consumptive material still can be too early softened before getting into the shower nozzle, leads to the consumptive material to extrude the difficulty, goes out silk inefficiency.

SUMMERY OF THE UTILITY MODEL

The utility model provides a high-frequency heating spray head of a 3D printer, which adopts a novel heating mode to effectively improve the heating efficiency, shorten the preheating time of the printer, improve the electrothermal conversion rate and save more energy; in addition, the consumable can be prevented from being softened prematurely before entering the spray head, and the wire discharging efficiency is improved.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a high-frequency heating spray head of a 3D printer comprises a spray head, a heat insulation pipe, a heating ring, a heat insulation connecting piece and a throat pipe; a counter bore is formed in the feed end of the spray head; the length of the heat insulation pipe is greater than the depth of the counter bore, one end of the heat insulation pipe is inserted into the counter bore, and the other end of the heat insulation pipe is connected with the bottom of the throat pipe; the heating ring is sleeved outside the spray head, the base body of the heating ring is made of insulating materials, and a coil surrounding the spray head is arranged in the heating ring; the feed end of the spray head is connected with the throat pipe through a heat insulation connecting piece.

Furthermore, one end of the heat insulation connecting piece is provided with a first threaded hole used for being connected with the spray head, the other end of the heat insulation connecting piece is provided with a second threaded hole used for being connected with the throat pipe, and a through hole used for penetrating through the heat insulation pipe is formed between the first threaded hole and the second threaded hole.

Furthermore, the heat insulation connecting piece and the heat insulation pipe are made of glass materials.

Furthermore, the first threaded hole and the second threaded hole are internally provided with an internal thread sleeve, and the feeding end of the nozzle and the lower end of the throat pipe are screwed into the corresponding internal thread sleeves.

Further, the height of the upper end of the heating ring is the same as that of the bottom of the counter bore.

Furthermore, an annular protrusion is arranged on the side wall of the spray head, and an annular groove matched with the annular protrusion is formed in the inner wall of the heating ring.

Furthermore, the substrate of the heating ring is made of polyimide, and two ends of the coil are led out from the side face of the heating ring.

Furthermore, the discharge end of the spray head is provided with a hexagonal part.

Compared with the prior art, the utility model heats the spray head by using the eddy current effect, and has the advantages of uniform heating, high heating speed and high electric-heat conversion efficiency; the utility model discloses a structural design dismouting of being convenient for more can guarantee simultaneously that the consumptive material can not soften in advance, improves the play silk effect of shower nozzle, improves printing quality.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 creative efforts.

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1I;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 4 is a cross-sectional view of the thermal connector of the present invention.

The reference numerals are explained below:

in the figure: 1. a spray head; 101. a hexagonal section; 102. a counter bore; 103. an annular projection; 2. a heating ring; 201. an annular groove; 3. a coil; 4. an internal thread sleeve; 5. a heat insulating pipe; 6. a thermally insulated connector; 601. a first threaded hole; 602. a second threaded hole; 7. a throat pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-4, the utility model provides a high-frequency heating nozzle of a 3D printer, which comprises a nozzle 1, a heat insulation pipe 5, a heating ring 2, a heat insulation connecting piece 6 and a throat pipe 7; the spray head 1 is made of copper, and a counter bore 102 is formed in the feed end of the spray head; the length of the heat insulation pipe 5 is greater than the depth of the counter bore 102, one end of the heat insulation pipe 5 is inserted into the counter bore 102, and the other end of the heat insulation pipe is connected with the bottom of the throat pipe 7; the heating ring 2 is sleeved on the outer side of the spray head 1, a base body of the heating ring 2 is made of insulating materials, and a coil 3 surrounding the spray head 1 is arranged in the heating ring 2; the feed end of the spray head 1 is connected with a throat pipe 7 through a heat insulation connecting piece 6.

The utility model discloses in, the one end setting of thermal-insulated connecting piece 6 is used for the first screw hole 601 of being connected with shower nozzle 1, and its other end setting is used for the second screw hole 602 of being connected with choke 7, set up the through-hole that is used for passing thermal-insulated pipe 5 between first screw hole 601 and the second screw hole 602. The heat insulation connecting piece 6 and the heat insulation pipe 5 are made of heat insulation materials, and can bear the temperature of the spray head 1, and for example, the heat insulation connecting piece and the heat insulation pipe can be made of glass materials. When thermal-insulated connecting piece 6 is the glass material, in order to prevent the internal thread damage at thermal-insulated connecting piece 6 connecting part after dismouting many times, all set up internal thread cover 4 in first screw hole 601 and the second screw hole 602, internal thread cover 4 is fixed with thermal-insulated connecting piece 6, with the feed end of shower nozzle 1 and the equal screw in of lower extreme of choke 7 in the corresponding internal thread cover 4 this moment.

In the utility model discloses, the height of heating ring 2 upper end is the same with the height of counter bore 102 bottom. Because the heat insulation material is adopted for the heat insulation pipe 5, the heat conductivity coefficient is relatively low, and therefore the temperature of the inner wall of the heat insulation pipe 5 is far lower than that of the spray head 1, consumables in the spray head 1 above the heating ring 2 are guaranteed not to be softened in advance, and consumables in the throat pipe 7 can be normally fed and the wire outlet rate of the spray head 1 is guaranteed.

The utility model discloses in, be provided with annular protrusion 103 on the lateral wall of shower nozzle 1, set up the ring channel 201 that matches with the protruding 103 of annular on the inner wall of heating ring 2, can directly overlap heating ring 2 in the outside of shower nozzle 1 when the installation, it is very convenient to install, and ring channel 201 also can make the more firm of installation with the protruding 103 cooperation of annular. The substrate of the heating ring 2 can be made of polyimide or other high-temperature-resistant insulating materials, and two ends of the coil 3 are led out from the side surface of the heating ring 2. The discharge end of shower nozzle 1 is provided with hexagonal portion 101, and when insulating connecting piece 6 with shower nozzle 1 screw in, hexagonal portion 101 can be used for cooperating with the spanner, the assembly of being convenient for.

The utility model discloses in the concrete implementation, let in the alternating current in the coil 3, produce the vortex and generate heat in shower nozzle 1 under the vortex effect, melt the consumptive material in the shower nozzle 1. Compared with the traditional heating mode, the heating mode has the advantages of uniform heating, high heating speed and high electric-heat conversion efficiency. Furthermore, the utility model discloses can guarantee that the consumptive material can not soften in advance, improve the play silk effect of shower nozzle 1.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A high-frequency heating spray head of a 3D printer is characterized by comprising a spray head (1), a heat insulation pipe (5), a heating ring (2), a heat insulation connecting piece (6) and a throat pipe (7); a counter bore (102) is formed in the feed end of the spray head (1); the length of the heat insulation pipe (5) is greater than the depth of the counter bore (102), one end of the heat insulation pipe (5) is inserted into the counter bore (102), and the other end of the heat insulation pipe is connected with the bottom of the throat pipe (7); the heating ring (2) is sleeved on the outer side of the spray head (1), a base body of the heating ring (2) is made of insulating materials, and a coil (3) surrounding the spray head (1) is arranged in the heating ring; the feed end of the spray head (1) is connected with the throat pipe (7) through a heat insulation connecting piece (6).

2. The 3D printer high-frequency heating spray head according to claim 1, characterized in that: one end of the heat insulation connecting piece (6) is provided with a first threaded hole (601) used for being connected with the spray head (1), the other end of the heat insulation connecting piece is provided with a second threaded hole (602) used for being connected with the throat pipe (7), and a through hole used for penetrating through the heat insulation pipe (5) is formed between the first threaded hole (601) and the second threaded hole (602).

3. The 3D printer high-frequency heating spray head according to claim 2, characterized in that: the heat insulation connecting piece (6) and the heat insulation pipe (5) are made of glass materials.

4. The 3D printer high-frequency heating spray head according to claim 3, characterized in that: the inner thread sleeves (4) are arranged in the first threaded hole (601) and the second threaded hole (602), and the feeding end of the spray head (1) and the lower end of the throat pipe (7) are screwed into the corresponding inner thread sleeves (4).

5. The 3D printer high-frequency heating spray head according to claim 1, characterized in that: the height of the upper end of the heating ring (2) is the same as that of the bottom of the counter bore (102).

6. The 3D printer high-frequency heating spray head according to claim 1, characterized in that: the side wall of the spray head (1) is provided with an annular protrusion (103), and the inner wall of the heating ring (2) is provided with an annular groove (201) matched with the annular protrusion (103).

7. The 3D printer high-frequency heating spray head according to claim 6, characterized in that: the base body of the heating ring (2) is made of polyimide, and two ends of the coil (3) are led out from the side face of the heating ring (2).

8. The 3D printer high-frequency heating spray head according to claim 1, characterized in that: the discharge end of the spray head (1) is provided with a hexagonal part (101).