CN219028530U

CN219028530U - Integral nozzle throat heating assembly

Info

Publication number: CN219028530U
Application number: CN202223134190.5U
Authority: CN
Inventors: 李日江; 欧阳泽丰; 谭凯友; 胡用军
Original assignee: Shenzhen Yuntu Chuangzhi Technology Co ltd
Current assignee: Shenzhen Yuntu Chuangzhi Technology Co ltd
Priority date: 2022-11-25
Filing date: 2022-11-25
Publication date: 2023-05-16
Anticipated expiration: 2032-11-25

Abstract

The utility model provides an integrated nozzle throat heating component, which is applied to a printing head of a 3D printer and comprises a throat, a spray head, a heat radiation component and a heating component, wherein the heating component comprises a heating column, a thermistor and a heating sheet, a through hole is arranged in the middle of the heating column, mounting holes are arranged on two sides of the through hole, a thermistor mounting position is arranged on the inner side wall of the front surface of the heating column, and the thermistor is arranged in the thermistor mounting position on the inner side of the front surface of the heating column, and the utility model has the beneficial effects that: the choke plug and the spray head are integrally formed, so that the current situation of choke plug and flash is reduced, the effect of quick replacement is achieved, the thermistor and the choke plug are tightly wrapped on the outer side wall of the heating column by the heating plate, and a heating assembly with high heating efficiency, constant temperature and small volume is formed; when the graphene heating sheet is heated, the graphene heating sheet is tightly attached to the outer side wall of the heating column, and is fixed on the heating column of the heating column by using a high Wen Jiaobu coil, so that the heating rate is improved, and the heating sheet is prevented from being damaged by dry combustion.

Description

Integral nozzle throat heating assembly

[ field of technology ]

The utility model relates to the technical field of 3D printers, in particular to an integrated nozzle throat heating assembly.

[ background Art ]

The 3D printer of the FDM process generally uses filament-like or granular consumable materials, and through temperature control, the consumable materials are brought into a molten state, extruded through a nozzle, and laid and molded according to a set path under program control. The extrusion control part of the consumable is called a printing head (Hotend), the printing head consists of a radiator, a throat, a heating block and a nozzle, the printing head is a core component of the 3D printer, and the performance of the printing head directly influences the overall performance of the 3D printer;

temperature control is the important function of 3D print head, dispels the heat to the choke fast effectively, can reduce the temperature before the consumptive material gets into the nozzle and melts the chamber for the consumptive material can keep rigidity, improves the response speed that the consumptive material fed and draw back. The heat radiation body is in contact with the throat pipe, heat is transferred from the throat pipe to the heat radiation body through heat conduction, and forced convection heat radiation is carried out on the heat radiation body through the heat radiation fan, so that the heat can be rapidly dispersed;

the Chinese patent document CN214645927U discloses a novel printing head for a 3D printer, which comprises a heat radiation component, a throat, a heating component and a nozzle, wherein the throat is connected with a feeding channel and the nozzle, the throat is positioned at the middle part of the heat radiation component, and the heating component is positioned below the heat radiation component. The heat dissipation assembly and the heating assembly do not need to be connected through the throat, so that more heat of the throat is avoided, and printing consumables are prevented from being softened and accumulated in the throat. The heat radiating component and the heating component are connected through the first connecting piece and the second connecting piece, so that the contact area between the heat radiating component and the heating component can be reduced, and the heat transfer is reduced; the first connecting pieces are three, and the three first connecting pieces are three connecting columns. When the heat radiation component is fixedly connected with the heating component, the three connecting pieces can play a limiting role, so that the heat radiation component and the heating component can be more accurately assembled together. The three connecting columns have certain stability, the area of the contact surface can be reduced to the greatest extent, and the heat transfer of the heating assembly can be blocked as much as possible;

compared with a resistance heating rod or a ceramic heating ring in the market, the graphene heating rate is higher and more uniform, the using energy consumption is lower, and the heating temperature can easily reach 350 ℃.

[ utility model ]

The utility model aims to solve the technical problems and provide the novel integral nozzle throat heating assembly which is heated by graphene, is higher and more uniform and has lower energy consumption.

The utility model is realized by the following technical scheme:

the utility model provides an integrative nozzle throat heating element, uses the print head on 3D printer, includes choke, shower nozzle, radiator unit, heating element, choke one end inserts in heating element's the heating post, the choke other end is connected with the shower nozzle, heating element pass through the double-screw bolt with radiator unit connects, heating element includes heating post, thermistor, heating plate, the heating post middle part is equipped with the through-hole, the through-hole both sides are equipped with the mounting hole, heating post openly inside wall is equipped with thermistor installation position, thermistor sets up in the positive inboard thermistor installation position of heating post, the heating plate closely wraps up thermistor, choke on the heating post lateral wall.

Further, the heat radiation assembly comprises a heat radiation base and a heat radiation fin, one end of the heat radiation fin penetrates through the heat radiation base, the other end of the heat radiation fin extends to the outside of the heat radiation base, an inner thread is arranged on the inner side wall of the heat radiation fin, a stud hole is arranged on the outer side wall of the heat radiation base, the heat radiation base is sleeved at the top of the heating column, penetrates through the stud hole on the outer side wall of the heat radiation base and the mounting hole on the heating column through the stud, and is fixed on the heating column.

Further, the upper part of the throat is provided with external threads, and the external threads on the upper part of the throat are tightly matched and connected with the internal threads on the inner side wall of the radiating fin.

Further, the throat and the spray head are integrally formed.

Further, the heating sheet is a graphene heating sheet.

Further, the heating column is made of brass.

Further, the stud is an M3 stud.

The utility model has the beneficial effects that:

(1) The choke plug and the spray head are integrally formed, so that the current situation of choke plug and flash is reduced, the effect of quick replacement is achieved, the thermistor and the choke plug are tightly wrapped on the outer side wall of the heating column by the heating plate, and a heating assembly with high heating efficiency, constant temperature and small volume is formed;

(2) When the graphene heating sheet is heated, the graphene heating sheet is tightly attached to the outer side wall of the heating column, and is fixed on the heating column by a coil with the height of Wen Jiaobu, so that the heating rate is improved, and the heating sheet is prevented from being damaged by dry heating;

(3) Compared with a resistance heating rod or a ceramic heating ring in the market, the graphene heating plate is adopted for heating the heating assembly, so that the heating assembly is higher and more uniform, and the use energy consumption is lower.

[ description of the drawings ]

FIG. 1 is a schematic diagram of an integrated nozzle throat heating assembly of the present utility model;

FIG. 2 is a schematic diagram of an explosion structure of an integrated nozzle throat heating assembly according to the present utility model;

FIG. 3 is a schematic view of the heat patch of the present utility model in an expanded configuration;

FIG. 4 is a schematic view of an integrally formed throat and nozzle of the present utility model;

reference numerals: 1. a throat; 2. a spray head; 3. a heat dissipation assembly; 31. a heat dissipation base; 32. a heat sink; 4. a heating assembly; 41. heating the column; 410. a through hole; 411. a mounting hole; 412. a thermistor mounting location; 42. a thermistor; 43. a heating sheet; 5. a stud.

[ detailed description ] of the utility model

The utility model is further described with reference to the accompanying drawings and detailed description below:

unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the applications herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

Referring to figures 1-4, the integral nozzle throat heating assembly is applied to a printing head on a 3D printer and comprises a throat, a spray head, a heat radiating assembly and a heating assembly, wherein one end of the throat is inserted into a heating column of the heating assembly, the other end of the throat is connected with the spray head, the heating assembly is connected with the heat radiating assembly through a stud, the heating assembly comprises a heating column, a thermistor and a heating plate, a through hole is formed in the middle of the heating column, mounting holes are formed in two sides of the through hole, a thermistor mounting position is formed in the inner side wall of the front face of the heating column, and the thermistor and the throat are tightly wrapped on the outer side wall of the heating column by the heating plate.

Preferably, the heat dissipation assembly comprises a heat dissipation base and a heat dissipation fin, one end of the heat dissipation fin penetrates through the heat dissipation base, the other end of the heat dissipation fin extends to the outside of the heat dissipation base, an inner thread is arranged on the inner side wall of the heat dissipation fin, a stud hole is arranged on the outer side wall of the heat dissipation base, the heat dissipation base is sleeved at the top of the heating column, penetrates through the stud hole on the outer side wall of the heat dissipation base and the mounting hole on the heating column through the stud, and is fixed on the heating column.

Preferably, the upper part of the throat is provided with external threads, and the external threads on the upper part of the throat are tightly matched and connected with the internal threads on the inner side wall of the radiating fin.

Preferably, the throat and the spray head are integrally formed.

Preferably, the heating sheet is a graphene heating sheet.

Preferably, the heating column material is brass.

Preferably, a layer of high Wen Jiaobu is arranged outside the heating plate, and the high-temperature adhesive tape fixes the outer winding of the heating plate on the heating column, so that the heating rate is improved, and the heating plate is prevented from being damaged by dry burning.

Graphene heating plate working principle:

under the condition that electrodes at two ends of the graphene heating plate are electrified, phonons, ions and electrons are generated in the resistor by carbon molecules in the electrothermal film, heat energy is generated by mutual friction and collision (also called Brownian motion) among generated carbon molecular clusters, the heat energy is uniformly radiated out in a planar mode by controlling far infrared rays with the wavelength of 5-14 microns, the total conversion rate of effective electric heat energy is more than 99%, and meanwhile, the superconductivity of a special graphene material is added, so that the stability of heating performance is ensured.

In summary, the integral nozzle throat heating assembly is formed by integrating the throat and the spray head, so that the current situation of plugs and overflows is reduced, the effect of quick replacement is achieved, the thermistor and the throat are tightly wrapped on the outer side wall of the heating column by the heating sheet, and the heating assembly with high heating efficiency, constant temperature and small volume is formed; the heating component adopts the graphene heating plate for heating, is higher and more uniform, and has lower energy consumption.

Modifications and variations of the above embodiments will be apparent to those skilled in the art in light of the above teachings. Therefore, the utility model is not limited to the specific embodiments disclosed and described above, but some modifications and changes of the utility model should be also included in the scope of the claims of the utility model. In addition, although specific terms are used in the present specification, these terms are for convenience of description only and do not limit the present utility model in any way.

Claims

1. The utility model provides an integrative nozzle venturi heating element, uses the print head on 3D printer, includes venturi, shower nozzle, radiator unit, heating element, venturi one end inserts in heating element's the heating post, the venturi other end is connected with the shower nozzle, heating element pass through the double-screw bolt with radiator unit connects, its characterized in that: the heating component comprises a heating column, a thermistor and a heating sheet, wherein a through hole is formed in the middle of the heating column, mounting holes are formed in two sides of the through hole, a thermistor mounting position is formed in the inner side wall of the front face of the heating column, the thermistor is arranged in the thermistor mounting position of the inner side of the front face of the heating column, and the heating sheet tightly wraps the thermistor and a throat on the outer side wall of the heating column.

2. The integrated nozzle throat heating assembly according to claim 1, wherein: the heat dissipation assembly comprises a heat dissipation base and heat dissipation fins, one ends of the heat dissipation fins penetrate through the heat dissipation base, the other ends of the heat dissipation fins extend out of the heat dissipation base, inner threads are arranged on the inner side walls of the heat dissipation fins, stud holes are formed in the outer side walls of the heat dissipation base, the heat dissipation base is sleeved at the top of the heating column, penetrates through the stud holes in the outer side walls of the heat dissipation base through the studs, is matched with mounting holes in the heating column, and is fixed on the heating column.

3. The integrated nozzle throat heating assembly according to claim 2, wherein: the upper part of the throat pipe is provided with external threads, and the external threads on the upper part of the throat pipe are tightly matched and connected with the internal threads on the inner side wall of the radiating fin.

4. The integrated nozzle throat heating assembly according to claim 1, wherein: the throat pipe and the spray head are integrally formed.

5. The integrated nozzle throat heating assembly according to claim 1, wherein: the heating sheet is a graphene heating sheet.

6. The integrated nozzle throat heating assembly according to claim 1, wherein: the heating column is made of brass.