CN215320669U

CN215320669U - 3D prints heating nozzle and uses its 3D printer

Info

Publication number: CN215320669U
Application number: CN202120421439.7U
Authority: CN
Inventors: 刘辉林; 唐京科; 陈春; 敖丹军; 吴大江; 王角
Original assignee: Shenzhen Chuangxiang 3D Technology Co Ltd
Current assignee: Shenzhen Chuangxiang 3D Technology Co Ltd
Priority date: 2021-02-25
Filing date: 2021-02-25
Publication date: 2021-12-28
Anticipated expiration: 2031-02-25

Abstract

The application provides a 3D prints heating nozzle for heating and blowout consumptive material in 3D printer includes: the melting unit comprises a first shell, a second shell and a third shell, wherein a first cavity is arranged in the first shell and is used for accommodating the consumable; the ceramic heating pipe is sleeved outside the melt unit and wraps the first shell, and the ceramic heating pipe is used for heating to melt the consumable materials in the first cavity; and the nozzle is connected with the melting unit and communicated with the first cavity so as to lead out the melted consumable material. This application still provides the application 3D prints 3D printer of heating nozzle. According to the 3D printing heating nozzle, the ceramic heating pipes surrounding the melting unit are arranged, so that consumables arranged in the melting unit are heated from multiple angles, and the consumables are heated more uniformly in the heating process; and, the ceramic heating pipe has smaller volume and higher heating efficiency, so that the volume of the 3D printing heating nozzle can be greatly reduced.

Description

3D prints heating nozzle and uses its 3D printer

Technical Field

The application relates to a 3D prints the field, especially relates to 3D prints heating nozzle and uses its 3D printer.

Background

3D printing, namely a rapid prototyping technology, is an accumulation manufacturing technology, also called additive manufacturing, which is a digital model file-based method for manufacturing a three-dimensional object by printing a layer of adhesive material layer by using the adhesive material such as special wax material, powdered metal or plastic and the like. Fused deposition rapid prototyping (FDM), also known as hot melt deposition (hot melt deposition) technology, is one of the major 3D printing technologies. The technology comprises the steps of heating and melting hot-melt material wires, extruding the melted material wires from a spray head, depositing the material wires on a printing working platform or a previous layer of solidified material, starting solidification and forming when the temperature is lower than the solidification temperature of the material wires, and finally printing the material wires into an entity.

The existing 3D printer nozzle heating component generally comprises a heating pipe and a thermistor, and the nozzle heating component with the structure at least has the following defects: 1. the volume of the heating component of the spray head is larger due to the influence of the volume of the heating pipe; 2. the traditional heating pipe heats from the side surface when heating, the heating efficiency is not high, and the heat distribution is not uniform; 3. the thermistor cannot be installed close to the nozzle, so that the actually measured temperature of the thermistor and the temperature deviation of the nozzle are large; how to solve the above problems needs to be considered by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of this, the present application provides a 3D printing heating nozzle for heating and ejecting consumables in a 3D printer, including:

the melting unit comprises a first shell, a second shell and a third shell, wherein a first cavity is arranged in the first shell and used for accommodating the consumable;

the ceramic heating pipe is sleeved outside the melt unit and wraps the first shell, and the ceramic heating pipe generates heat to melt the consumable materials in the first cavity; and

and the nozzle is connected with the melting unit and communicated with the first cavity so as to lead out the melted consumable material.

In one possible embodiment, the consumable unit further comprises a thermistor connected to at least one of the nozzle or the melt unit, at least a portion of the thermistor extending into the first cavity and contacting the melted consumable to sense temperature.

In a possible embodiment, the first housing surrounds the first cavity in the transport direction of the consumable, and the ceramic heating tube surrounds the first housing, so that heat generated by the ceramic heating tube heats the consumable in the transport direction around the consumable through the first housing.

In a possible embodiment, the ceramic heating tube and the first shell are both symmetrical structures taking the conveying direction of the consumable as a central axis, the ceramic heating tube is hollow, and the first shell is made of copper or aluminum.

In a possible embodiment, the nozzle includes a second housing, the first housing has a first opening and a second opening along a conveying direction of the consumable, the first cavity is communicated with the first opening and the second opening, the second housing has a third opening and a fourth opening, a second cavity is further disposed in the second housing, the second cavity is communicated with the third opening and the fourth opening, the second housing (121) extends into the first cavity (110) through the second opening (113) on the first housing (111), the second cavity (120) is communicated with the first cavity (110) through the third opening (122), and the consumable is led out of the nozzle through the first opening, the first cavity, the second cavity and the fourth opening in sequence.

In a possible implementation manner, the consumable part further comprises a throat pipe, the throat pipe is connected with the first shell and communicated with the first cavity for transmitting the consumable part, and the throat pipe is arranged on one side, away from the nozzle, of the melt unit.

In a possible implementation manner, the consumable supply further comprises a heat dissipation unit, the heat dissipation unit comprises a third shell and heat dissipation blades, the third shell is connected with the heat dissipation blades and the throat, the heat dissipation blades are in contact with the third shell to dissipate heat, a third cavity is arranged in the third shell, the third cavity is communicated with the throat, and the consumable supply is sequentially conveyed to the first cavity through the third cavity and the throat.

In a possible embodiment, the ceramic heat-insulating plate is arranged between the heat-radiating unit and the ceramic heating pipe.

In a possible embodiment, the heating device further comprises a heat insulation protective sleeve, wherein the heat insulation protective sleeve is arranged on the outermost side of the 3D printing heating nozzle and at least covers the ceramic heating pipe.

The application still provides a 3D printer, including the main part and with the 3D that the main part is connected prints the heating nozzle, the 3D prints the heating nozzle and prints the heating nozzle for aforementioned 3D.

Compared with the prior art, the 3D printing heating nozzle has the advantages that the ceramic heating pipes surrounding the melting unit are arranged, so that consumables arranged in the melting unit are heated from multiple angles, and the consumables are heated more uniformly in the heating process; and, the ceramic heating pipe has smaller volume and higher heating efficiency, so that the volume of the 3D printing heating nozzle can be greatly reduced.

Drawings

Fig. 1 is a schematic perspective view of a 3D printing heating nozzle according to an embodiment of the present application.

Fig. 2 is an exploded view of a 3D printing heating nozzle according to an embodiment of the present application.

Fig. 3 is a schematic sectional view in the direction III-III of fig. 1.

Fig. 4 is a schematic diagram of a 3D printer according to an embodiment of the present application.

Description of the main elements

3D printing heating nozzle 10

Melt unit 11

First chamber 110

First case 111

First opening 112

Second opening 113

Nozzle 12

Second chamber 120

Second housing 121

Third opening 122

Fourth opening 123

Ceramic heating pipe 13

Thermistor 14

Positioning hole 140

Throat 15

Heat radiation unit 16

Third cavity 160

Third casing 161

Heat dissipating fin 165

Ceramic heat insulating sheet 17

Heat insulation protective sleeve 18

Positioning piece 19

3D Printer 1

Main body 101

The following detailed description will further illustrate the present application in conjunction with the above-described figures.

Detailed Description

The following description will refer to the accompanying drawings to more fully describe the present disclosure. There is shown in the drawings exemplary embodiments of the present application. This application may, however, be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. These exemplary embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Like reference numerals designate identical or similar components.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Further, as used herein, "comprises" and/or "comprising" and/or "having," integers, steps, operations, components, and/or components, but does not preclude the presence or addition of one or more other features, regions, integers, steps, operations, components, and/or groups thereof.

Unless otherwise defined, all terms (including 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. Furthermore, unless otherwise defined herein, terms such as those defined in commonly used dictionaries should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present application and will not be interpreted in an idealized or overly formal sense.

The following description of exemplary embodiments refers to the accompanying drawings. It should be noted that the components depicted in the referenced drawings are not necessarily shown to scale; and the same or similar components will be given the same or similar reference numerals or similar terms.

Embodiments of the present application will now be described in further detail with reference to the accompanying drawings.

Fig. 1 is a perspective view of a 3D printing heating nozzle 10 of the present application; fig. 2 is an exploded schematic view of the 3D printing heating nozzle 10 of the present application; FIG. 3 is a schematic cross-sectional view of the 3D printing heating nozzle 10 of the present application along III-III; due to the presence of the visual occlusion, embodiments of the present application will be described with reference to fig. 1 to 3.

The 3D printing heating nozzle 10 is used for heating and ejecting consumables in a 3D printer, and the 3D printing heating nozzle 10 includes a melt unit 11, a nozzle 12, and a ceramic heating tube 13. The melting unit 11 comprises a first housing 111, a first cavity 110 is arranged in the first housing 111, and the first cavity 110 is used for accommodating the consumable; the ceramic heating tube 13 is sleeved outside the melting unit 11 and wraps the first shell 111, and the ceramic heating tube 13 generates heat to melt the consumable materials in the first cavity 110; the nozzle 12 is connected to the melting unit 11 and communicates with the first chamber 110 to discharge the melted consumable material.

The first casing 111 is opened with a first opening 112 and a second opening 113, and the first cavity 110 is communicated with the first opening 112 and the second opening 113 along the transportation direction of the consumables. In one embodiment, the size of the second opening 113 may be larger than that of the first opening 112, the second opening 113 may be connected to the nozzle 12, the consumable may enter the first chamber 110 from the first opening 112 and enter the nozzle 12, or the consumable may enter the first chamber 110 from the first opening 112 and then pass through the second opening 113 and reach the nozzle 12.

The nozzle 12 comprises a second shell 121, the second shell 121 is provided with a third opening 122 and a fourth opening 123, the second shell 121 is further provided with a second cavity 120, the second cavity 120 is communicated with the third opening 122 and the fourth opening 123 along the conveying direction of the consumable, and the size of the fourth opening 123 can be smaller than that of the third opening 122, so that the melted consumable can be sprayed out from the fourth opening 123.

In an embodiment, the size of the second opening 113 may be larger than the size of the third opening 122, such that the end of the second housing 121 with the third opening 122 may be embedded in the end of the first housing 111 with the second opening 113 to communicate the first cavity 110 with the second cavity 120, and the consumable may be led out of the nozzle 12 through the first opening 112, the first cavity 110, the second cavity 120, and the fourth opening 123 in sequence; in other embodiments, the size of the second opening 113 and the size of the third opening 122 may be substantially equal, the end of the second housing 121 with the third opening 122 is connected to the end of the first housing 111 with the second opening 113, so that the second opening 113 is communicated with the third opening 122, and the first cavity 110 is further communicated with the second cavity 120, that is, the second housing 121 extends into the first cavity 110 through the second opening 113 of the first housing 111, the second cavity 120 is communicated with the first cavity 110 through the third opening 122, and the consumable can be led out of the nozzle 12 through the first opening 112, the first cavity 110, the second opening 113, the third opening 122, the second cavity 120 and the fourth opening 123 in sequence.

Ceramic heating pipe 13 is hollow form, and ceramic heating pipe 13 can generate heat, and the heat that ceramic heating pipe 13 sent can make in transmitting to first cavity 110 via first casing 111 the consumptive material melts, and ceramic heating pipe 13 is heating device when comparing in traditional resistance, has less volume under the same power for the whole size that is equipped with 3D printing heating nozzle 10 of ceramic heating pipe 13 can be littleer.

In one embodiment, the first housing 111 surrounds and wraps the first cavity 110 and the ceramic heating tube 13 surrounds and wraps the first housing 111 along the transportation direction of the consumable, so that the consumable is heated from multiple directions simultaneously by the heat generated by the ceramic heating tube 13 in the transportation direction of the consumable, and the consumable is heated uniformly.

In an embodiment, the melting unit 11 may be a symmetrical structure with a central axis along the transportation direction of the consumable material, and the first housing 111 and the first cavity 110 may be symmetrical structures with a central axis along the transportation direction of the consumable material, so that the consumable material disposed in the first cavity 110 is heated more uniformly.

The 3D printing heating nozzle 10 further includes a thermistor 14, the thermistor 14 is connected with at least one of the nozzle 12 or the melt unit 11, and at least a portion of the thermistor 14 extends into the first cavity 110 and contacts with the melted consumable to sense temperature. In one embodiment, the thermistor 14 can be screwed, the melt unit 11 is nested with the nozzle 12, and the thermistor 14 extends into the first cavity 110 or the second cavity 120 through the positioning hole 140 simultaneously penetrating through the melt unit 11 and the nozzle 12 and contacts with the consumable; in this embodiment, the number of the thermistors 14 may be plural, and the plurality of thermistors 14 extend from plural directions and sense the temperature of the consumable to make the sensing result more accurate.

The 3D printing heating nozzle 10 further comprises a throat 15, the throat 15 is connected with the first housing 111 and communicated with the first cavity 110 for transmitting the consumables, and the throat 15 is disposed on one side of the melt unit 11 away from the nozzle 12. In one embodiment, at least a portion of the throat 15 may be wrapped by the ceramic heating tube 13 at intervals along the transportation direction of the consumables, the throat 15 is not in direct contact with the ceramic heating tube 13, and the ceramic heating tube 13 may preheat the consumables located in the throat 15 to improve the heating efficiency.

The 3D printing heating nozzle 10 further comprises a heat dissipation unit 16, the heat dissipation unit 16 comprises a third shell 161 and heat dissipation blades 165, the third shell 161 is connected with the heat dissipation blades 165 and the throat 15, the third shell 161 is in contact with the heat dissipation blades 165 to dissipate heat, and the third shell 161 is connected with the throat 15 to convey the consumables. In one embodiment, a third cavity 160 is disposed in the third casing 161, the third cavity 160 is communicated with the throat 15, and the consumables can be sequentially transferred to the first cavity 110 through the third cavity 160 and the throat 15; the heat sink fins 165 may be a plurality of fins extending outwardly from the third housing 161, and the heat sink fins 165 are disposed on a side of the third housing 161 away from the throat 15.

The 3D printing heating nozzle 10 further comprises a ceramic heat-insulating sheet 17, the ceramic heat-insulating sheet is arranged between the heat-radiating unit 16 and the ceramic heating pipe 13, heat loss caused by direct contact or high-efficiency heat interaction between the ceramic heating pipe 13 and the heat-radiating unit 16 is avoided, and the overall heat efficiency of the 3D printing heating nozzle 10 is further improved.

In one embodiment, the material of the first housing 111 may be a material with a high thermal conductivity, such as copper or aluminum; the material of throat 15 may be a material with a low thermal conductivity, such as stainless steel; the material of the third housing 161 may be a material with a high thermal conductivity, such as copper or aluminum.

The 3D printing heating nozzle 10 further includes a heat insulation protective sleeve 18, the heat insulation protective sleeve 18 is sleeved on the outermost side of the 3D printing heating nozzle 10 and at least covers the ceramic heating pipe 13, and the heat insulation protective sleeve 18 may be a flexible material with a low thermal conductivity coefficient, such as silica gel. Thermal-insulated protective sheath 18 is used for reducing the convection current of 3D printing heating nozzle 10 and air, improves 3D printing heating nozzle 10's heat utilization rate, and simultaneously, thermal-insulated protective sheath 18 also can prevent that the user from printing heating nozzle 10 when using by the nozzle scald 3D.

The 3D printing heating nozzle 10 further includes a positioning member 19, where the positioning member 19 may be a screw, and the positioning member 19 is disposed on a side of the heat dissipation unit 16 away from the nozzle 12, and is used to fix the 3D printing heating nozzle 10 to an external device.

As shown in fig. 4, the present application also provides a 3D printer 1, which includes a main body 101 and a 3D printing heating nozzle 10 connected to the main body 101.

Hereinbefore, specific embodiments of the present application are described with reference to the drawings. However, those skilled in the art will appreciate that various modifications and substitutions can be made to the specific embodiments of the present application without departing from the spirit and scope of the application. Such modifications and substitutions are intended to be within the scope of the present application.

Claims

1. A3D printing heating nozzle for heating and extruding consumables in a 3D printer, comprising:

the melting unit (11) comprises a first shell (111), wherein a first cavity (110) is arranged in the first shell (111), and the first cavity (110) is used for accommodating the consumable;

the ceramic heating pipe (13) is sleeved outside the melting material unit (11) and wraps the first shell (111), and the ceramic heating pipe (13) generates heat to melt the consumable materials in the first cavity (110); and

the nozzle (12) is connected with the melting unit (11) and communicated with the first cavity (110) to lead out the melted consumable.

2. The 3D printing heating nozzle of claim 1, further comprising a thermistor (14), the thermistor (14) being connected with at least one of the nozzle (12) or the melt unit (11), at least part of the thermistor (14) extending into the first cavity (110) and being in contact with the melted consumable to sense temperature.

3. The 3D printing heating nozzle of claim 1, characterized in that the first housing (111) surrounds the first cavity (110) in a transport direction of the consumable, and the ceramic heating tube (13) surrounds the first housing (111) such that heat generated by the ceramic heating tube (13) heats the consumable in the transport direction surrounding the consumable through the first housing (111).

4. The 3D printing heating nozzle according to claim 3, characterized in that the ceramic heating tube (13) and the first shell (111) are symmetrical structures with a central axis along the feeding direction of the consumable, the ceramic heating tube (13) is hollow, and the material of the first shell (111) is copper or aluminum.

5. The 3D printing heating nozzle according to claim 1, wherein the nozzle (12) comprises a second housing (121), the first housing (111) defines a first opening (112) and a second opening (113), the first cavity (110) is communicated with the first opening (112) and the second opening (113), the second housing (121) defines a third opening (122) and a fourth opening (123), a second cavity (120) is further disposed in the second housing (121), the second cavity (120) is communicated with the third opening (122) and the fourth opening (123), the second housing (121) extends into the first cavity (110) through the second opening (113) of the first housing (111), and the second cavity (120) is communicated with the first cavity (110) through the third opening (122), the consumable is led out of the nozzle (12) through the first opening (112), the first cavity (110), the second cavity (120) and the fourth opening (123) in sequence.

6. The 3D printing heating nozzle according to claim 1, further comprising a throat (15), wherein the throat (15) is connected with the first housing (111) and communicated with the first cavity (110) for transmitting the consumable, and the throat (15) is arranged on one side of the melt unit (11) far away from the nozzle (12).

7. The 3D printing heating nozzle according to claim 6, further comprising a heat dissipation unit (16), wherein the heat dissipation unit (16) comprises a third shell (161) and a heat dissipation blade (165), the third shell (161) is connected with the heat dissipation blade (165) and the throat (15), the heat dissipation blade (165) is in contact with the third shell (161) to dissipate heat, a third cavity (160) is arranged in the third shell (161), the third cavity (160) is communicated with the throat (15), and the consumables are sequentially conveyed to the first cavity (110) through the third cavity (160) and the throat (15).

8. The 3D printing heating nozzle according to claim 7, further comprising a ceramic heat shield (17), wherein the ceramic heat shield (17) is provided between the heat dissipating unit (16) and the ceramic heating tube (13).

9. The 3D printing heating nozzle according to claim 1, further comprising a heat insulating protective sleeve (18), wherein the heat insulating protective sleeve (18) is disposed at the outermost side of the 3D printing heating nozzle (12) and covers at least the ceramic heating tube (13).

10. A 3D printer comprising the 3D printing heating nozzle of any one of claims 1 to 9.