CN218577005U - Shower nozzle device and 3D printing apparatus - Google Patents

Abstract

The application relates to the technical field of 3D printing, and aims to solve the technical problem that a known spray head device cannot compromise heat dissipation performance and user experience. Provided are a nozzle device and a 3D printing device. Wherein, shower nozzle device includes heating member, thermal-insulated spare and heat dissipation piece. The heat insulation part wraps the outer surface of the heating part. The radiating piece and the heating member are arranged at intervals in the gravity direction and are connected with the heating member, the side surface of the radiating piece defines a guide groove extending in the gravity direction, the guide groove is used for guiding air near the heating member to flow in the gravity direction along the direction departing from the heating member, and the radiating piece, the heat insulation member and the heating member define a feeding channel for allowing consumables to pass through together. The beneficial effect of this application is that realize the miniaturized design of radiating piece.

Description

Shower nozzle device and 3D printing apparatus

Technical Field

The application relates to the technical field of 3D printing, in particular to a sprayer device and 3D printing equipment.

Background

The 3D printing apparatus's rationale is through feeding mechanism input consumptive material, and the consumptive material loops through radiator, choke pipe and carries to the heating block, heats the back through the heating block again and follow the nozzle blowout to along with the removal of nozzle, solidify the shaping through piling up according to predetermined cross-section profile. Wherein, the heat that the consumptive material received in radiator department is mainly conducted and extremely by the choke through heating the piece, and the consumptive material can local hot melt inflation and lead to the jam problem when being heated seriously.

The temperature of the consumables at the heat sink is reduced by increasing the heat dissipation capability of the heat sink in the prior art. However, the increase in the heat dissipating capacity of the heat sink requires an increase in the number of revolutions, size, etc. of the fan, which is likely to cause noise problems and increase in the size of the heat sink.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a sprayer device and 3D printing equipment to solve the technical problem that the known sprayer device cannot give consideration to heat dissipation performance and user experience.

The embodiment of the application is realized as follows:

in a first aspect, the present application provides a spray head device comprising a heating element, a thermal insulation element, and a heat sink. The heat insulation part wraps the outer surface of the heating part. The heat dissipation member with the heating member sets up and with at the direction of gravity interval the heating member is connected, the guiding gutter that extends along the direction of gravity is injectd to the side of heat dissipation member, the guiding gutter is used for guiding near the air in the direction of gravity along deviating from near the heating member the direction flow of heating member, heat dissipation member with the heating member is injectd jointly and is used for allowing the pay-off passageway that the consumptive material passes through.

When the spray head device in the embodiment of the application is used, most of heat generated by the heating elements is isolated by the heat insulation elements, and after a small part of heat is conducted to air outside the heating elements, heat exchange can be rapidly completed under the guidance of the diversion trench, so that the heat of the heating elements received by the heat dissipation elements is greatly reduced, the heat dissipation elements can be free of being provided with cooling fans, the cost of the heat dissipation elements is reduced, the heat dissipation elements have no noise generated by the operation of the fans, the operating noise of the heat dissipation elements is reduced, the heat dissipation efficiency of the heat dissipation elements is guaranteed, and the use experience of users is improved.

In one possible embodiment: the heat dissipation piece comprises a heat dissipation main body and a plurality of heat dissipation fins, the heat dissipation fins are sequentially arranged on the side face of the heat dissipation main body at intervals, the heat dissipation fins extend from the side face of the heat dissipation main body along the direction perpendicular to the gravity direction, and the adjacent two heat dissipation fins limit the flow guide grooves.

In one possible embodiment: the length of the extending direction of the radiating fins far away from the radiating main body is larger than the distance between the adjacent radiating fins.

In one possible embodiment: the projection of the heat insulation piece along the gravity direction is positioned on the inner side of the projection of the heat dissipation main body along the gravity direction.

In one possible embodiment: the heating member includes: a temperature equalizing block; the heating block, the heating block cover is located samming piece is used for heating samming piece, the heat insulating part wrap up in the surface of heating block.

In one possible embodiment: the heating element defines a first channel, the heat sink defines a second channel, and the spray head device further includes a throat, one end of the throat being connected to the heat sink and communicating with the second channel, and the other end of the throat passing through the thermal insulation element and being connected to the heating element and communicating with the first channel.

In one possible embodiment: the throat pipe comprises: a heat conductive connection part connected to the heating member; and one end of the heat insulation pipe is connected with the heat radiation piece and communicated with the second channel, and the other end of the heat insulation pipe is connected with the heat conduction connecting part.

In one possible embodiment: the heat conduction connecting portion are equipped with the briquetting, add the heat-insulating material orientation the surface of radiating piece is equipped with the recess, the briquetting compress tightly in the tank bottom wall of recess, just the briquetting is not higher than add the heat-insulating material orientation the surface of radiating piece.

In one possible embodiment: the heating member includes: the heat insulation piece is arranged on the outer surface of the temperature equalizing part; the heating part is arranged on the temperature equalizing part and used for heating the temperature equalizing part.

In a second aspect, the present application provides a 3D printing apparatus, including the foregoing nozzle device.

To sum up, the heat insulating part in this application embodiment can completely cut off most heat that adds the heat-insulating part production, and the air in the heat insulating part outside that a small amount of heat of adding the heat-insulating part heated then can be through the guiding gutter of radiating piece by radiating piece rapid cooling to reduce by a wide margin and add the heat that heat-insulating part conducted to the radiating piece, so that realize the miniaturized design of radiating piece. The application provides a 3D printing apparatus possesses this shower nozzle device, therefore can use in small-size printing space to have the characteristics of low noise, have wider application scope.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 is a schematic structural diagram of a showerhead apparatus according to an embodiment of the present application;

FIG. 2 is a cross-sectional view of the sprinkler head apparatus shown in FIG. 1;

FIG. 3 is an exploded view of the sprinkler arrangement shown in FIG. 1;

FIG. 4 is a first simulated isotherm diagram of a showerhead apparatus of an embodiment of the present application;

FIG. 5 is a second simulated isotherm diagram of a showerhead device according to an embodiment of the present application;

FIG. 6 is a third simulated isotherm diagram of a showerhead apparatus of an embodiment of the present application;

FIG. 7 is a schematic structural diagram of a showerhead apparatus according to another embodiment of the present application;

FIG. 8 is a cross-sectional view of the sprinkler device shown in FIG. 7;

FIG. 9 is an exploded view of the sprinkler arrangement shown in FIG. 7;

fig. 10 is a schematic structural diagram of a 3D printing apparatus according to an embodiment of the present application.

Description of the main element symbols:

spray head device 100

Heating element 10

First passage 11

Temperature equalizing part 12

Heating unit 13

Temperature equalizing block 14

Dodging port 141

Narrow section 142

Wide section 143

Heating block 15

First locking member 16

Second locking member 17

Groove 18

Heat insulation member 20

First opening 21

Second opening 22

First through hole 23

Second through hole 24

Heat sink 30

Diversion trench 31

Second channel 32

Heat radiation main body 33

First side 331

Second side 332

Heat dissipating fins 34

Feed channel 40

Throat 50

Heat insulation pipe 51

Thermally conductive connection 52

Fastener 53

Briquetting 54

First connecting pipe 55

Second connection pipe 56

Nozzle 61

Temperature detecting member 62

Case 63

Spout cover 64

3D printing device 200

Case 201

Transfer mechanism 202

Printing platform 203

Direction of gravity X

First direction Y1

Second direction Y2

Detailed Description

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

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for purposes of illustration only.

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 herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Some embodiments of the present application are described in detail. In the following embodiments, features of the embodiments may be combined with each other without conflict.

Examples

Referring to fig. 1 to 3, the present embodiment provides a head apparatus 100 including a heating member 10, a heat insulating member 20, and a heat radiating member 30. The heat insulating member 20 is wrapped around the outer surface of the heating member 10. The heat radiating member 30 is disposed at an interval in the gravity direction X from the heating member 10 and connected to the heating member 10, and a side surface of the heat radiating member 30 defines a guide groove 31 extending in the gravity direction X, the guide groove 31 being for guiding air near the heating member 10 to flow in a direction away from the heating member 10 in the gravity direction X. The heat sink 30, the thermal insulation element 20 and the heating element 10 together define a feed channel 40 for allowing the passage of consumables.

When the nozzle device 100 of the embodiment of the present application is used, the heating member 10 generates heat to heat the consumable material in the feeding passage 40 in the heating member 10 and melt the consumable material, so that the melted consumable material is ejected, and stacked and molded. The heat insulation member 20 can reduce the heat exchange efficiency between the heating member 10 and the outside, and under the condition of the same heating power of the heating member 10, compared with the heating member 10 without the heat insulation member 20, the heat loss speed generated by the heating member 10 of the embodiment is reduced, so that more heat is stored in the heating member 10, and in the preheating stage of the nozzle device 100, the temperature rising speed of the heating member 10 can be increased, the preheating efficiency of the nozzle device 100 is improved, and the time required by the heating member 10 to reach a large preset temperature is reduced; in the operation stage of the showerhead device 100, the heating member 10 does not need to consider the influence of heat exchange with the external environment, so that the heating efficiency does not need to be additionally increased, and the stable operation power consumption of the showerhead device 100 is low.

The heat insulation member 20 can also reduce the heating of the heating member 10 to the air around the heating member 10, so that the rising degree of the air temperature around the heating member 10 is small, the temperature difference between the air temperature around the heating member 10 and the air temperature around the heat dissipation member 30 is avoided to be too large, the problem that the heat dissipation effect of the heat dissipation member 30 is finally influenced by the convection heat transfer of the air around the heating member 10 towards the air around the heat dissipation member 30 is solved, the ambient air temperature of the heat dissipation member 30 is not easily influenced by the heating member 10, the normal heat dissipation effect of the heat dissipation member 30 is ensured, the temperature of consumable materials in the first passage 11 is reduced, and the phenomenon that the consumable materials in the first passage 11 are heated up in advance or even melted is remarkably reduced.

Meanwhile, part of the heat generated by the heating element 10 can still pass through the heat insulation element 20 to heat the air outside the heating element 10, and the temperature of the air outside the heating element 10 is higher than that of the air outside the heat dissipation element 30, so that the air outside the heat insulation element 20 can move in the direction close to the heat dissipation element 30 in the gravity direction X, and the heat dissipation element 30 is heated. The known heat sink 30 blocks the flow of air outside the heating element 10 thereof and causes the end of the heat sink 30 close to the heating element 10 to be continuously heated, affecting the heat dissipation performance of the heat sink 30. The outside of the heat dissipation member 30 of the embodiment of the application is provided with the diversion trench 31, can play the guide effect to the air outside the heating member 10, make it flow to the one end that the heat dissipation member 30 deviates from the heating member 10 from the one end that the heat dissipation member 30 is close to the heating member 10, carry out the heat exchange and make its cooling to the air outside the heating member 10 in this process, thereby avoid the air outside the heating member 10 to pile up in the problem that the heat dissipation member 30 is close to the one end of the heating member 10, improve the radiating efficiency of the air outside the heating member 10.

From this, most of heat that heating member 10 produced is isolated by heat-insulating part 20, after its few part heat conduction to the air in heating member 10 outside, can accomplish the heat exchange fast again under the guide of guiding gutter 31, make the heat of heating member 10 that radiating piece 30 received reduce by a wide margin, thereby radiating piece 30 can need not set up radiator fan, the cost of radiating piece 30 has been reduced, and radiating piece 30 no longer has the noise of fan operation, the running noise of radiating piece 30 has been reduced, the radiating efficiency of radiating piece 30 has been guaranteed, user experience is improved.

In addition, since the heat insulating member 20 insulates most of the heat generated from the heating member 10, the temperature of the outer surface of the heat insulating member 20 is low. Referring to fig. 4, fig. 4 is a first simulated isotherm diagram of the nozzle device 100 of the present embodiment, in which the temperature of the surface of the heat insulating member 20 is about 64.63 ℃, the temperature of the end of the heat dissipating member 30 close to the heating element 10 is about 38.41 ℃, and the temperatures of the ends of the heat dissipating member 30 away from the heating element 10 are all about 38.23 ℃, so that the heat insulating member 20 can achieve a good heat insulating effect on the heating element 10, and the heat dissipating member 30 can maintain good heat dissipating performance and low operating temperature without using a heat dissipating fan. Therefore, the temperature of the surface of the heat insulation member 20 is reduced, and the spray head device 100 can be prevented from scalding operators in the using process, so that the user experience is improved.

In this embodiment, the thermal insulation member 20 can be made of nano aerogel, glass fiber, rock wool, or other thermal insulation materials. The heat insulating member 20 may be integrally coated on the heating member 10, or may be formed as a plurality of heat insulating blocks and fixed to the outer surface of the heating member 10.

Referring to fig. 2, in the present embodiment, the heating member 10 defines a first channel 11, the heat sink 30 defines a second channel 32, and the spray head device 100 further includes a throat 50, one end of the throat 50 is connected to the heat sink 30 and communicates with the second channel 32, and the other end passes through the heat insulating member 20 and is connected to the heating member 10 and communicates with the first channel 11, and the first channel 11 and the second channel 32 form a feeding channel 40.

Referring to fig. 3, in the present embodiment, the throat 50 includes a heat conductive connection 52 and an insulating tube 51. The heat conductive connection part 52 is connected to the heating member 10. One end of the heat insulating pipe 51 is connected to the heat sink 30 and communicates with the second passage 32, and the other end of the heat insulating pipe 51 is connected to the heat conductive connection portion 52.

The heat insulation pipe 51 can greatly reduce the heat conducted from the heating element 10 to the heat sink 30 through the throat 50, so as to further reduce the heat received by the heat sink 30, i.e. reduce the heat dissipation capacity of the heat sink 30; it is also possible to make the heat generated by the heating member 10 more retained in the heating member 10 to increase the temperature rising speed of the heating member 10 and to reduce the preheating time of the heating member 10.

The heat-conductive connecting portion 52 has a good heat-conductive property, so that the heat of the heating member 10 can be quickly conducted to the heat-conductive connecting portion 52, and the consumables in the heat-conductive connecting portion 52 can be further heated, thereby further improving the heating efficiency of the consumables. Alternatively, the outer surface of the heat conductive connection part 52 is provided with threads so that the heat conductive connection part 52 can be screwed with the heating member 10.

The heat conductive connection portion 52 may be made of a heat conductive material such as a known heat conductive metal, and the heat insulating pipe 51 may be made of a heat insulating material such as a known heat insulating ceramic.

Referring to fig. 2 and 3, in the present embodiment, the heat-conducting connecting portion 52 is provided with the pressing piece 54, the surface of the heating element 10 facing the heat sink 30 is provided with the groove 18, the pressing piece 54 is pressed against the groove bottom wall of the groove 18, and the pressing piece 54 is not higher than the surface of the heating element 10 facing the heat sink 30. In this way, the pressing block 54 can ensure the connection stability between the heat conduction connecting part 52 and the heating element 10, and does not protrude from the surface of the heating element 10, so as to reduce the interference caused by the coating of the heat insulating element 20, thereby further improving the heat insulating effect of the heat insulating element 20.

Referring to fig. 2, in the present embodiment, the throat 50 further includes a fastening member 53, the heat insulation pipe 51 is inserted into the heat sink 30, and the fastening member 53 is inserted into the heat sink 30 and fixes the heat insulation pipe 51 in the heat sink 30, so as to improve the connection fastening performance between the heat insulation pipe 51 and the heat sink 30. Alternatively, the fastener 53 is provided as a screw.

Referring to fig. 2 and 3, optionally, the nozzle device 100 in the embodiment further includes a nozzle 61, the nozzle 61 is disposed at an end of the heating member 10 away from the heat sink 30 and is communicated with the throat 50, the heating member 10 can heat and melt the consumables entering the nozzle 61 from the feeding channel 40, and the melted consumables are ejected from the nozzle 61 to complete 3D printing.

Referring to fig. 2 and 3, in the present embodiment, the heat insulating member 20 is provided with a first opening 21 and a second opening 22 which are oppositely arranged along the gravity direction X, the first opening 21 is used for avoiding the throat 50, and the second opening 22 is used for avoiding the nozzle 61. In this embodiment, a gap is formed between the first opening 21 and the throat 50, and a gap is formed between the second opening 22 and the nozzle 61, so as to facilitate assembly and maintenance of the sprinkler head 100, in other embodiments of the present application, in order to further improve the heat insulation effect of the heat insulation member 20, the heat insulation member 20 may also be wrapped around the throat 50 and the nozzle 61, so that the first opening 21 and the second opening 22 are not required to be provided. In addition, it can be understood that, although the heating element 10 can heat the air near the throat 50 from the first opening 21 and heat the air near the nozzle 61 from the second opening 22, since a large amount of heat of the heating element 10 is blocked by the heat insulating element 20, the heat discharged from the second opening 22 can further heat the nozzle 61, and the air heated from the first opening 21 can be rapidly cooled by the heat dissipating element 30 through the guiding groove 31, so that the first opening 21 and the second opening 22 have a small influence on the heat insulating effect of the heat insulating element 20.

Referring to fig. 3, in the present embodiment, the heat sink 30 includes a heat dissipating body 33 and a plurality of heat dissipating fins 34, the plurality of heat dissipating fins 34 are sequentially disposed on a side surface of the heat dissipating body 33 at intervals, the heat dissipating fins 34 extend from the side surface of the heat dissipating body 33 in a direction perpendicular to the gravity direction X, and two adjacent heat dissipating fins 34 define the flow guiding groove 31.

After the hot-air in the outside of heating member 10 upwards and got into guiding gutter 31 along direction of gravity X, two radiating fin 34 can carry out the heat exchange with the hot-air, make the air accomplish the heat dissipation promptly at the in-process that flows, avoid the hot-air in the outside of heating member 10 to pile up, further improve the radiating efficiency, guarantee that the consumptive material does not produce the end cap problem because of hot creep to solve the fan noise problem that wind cooling heat dissipation introduced in traditional radiating member.

Referring to fig. 3, in the present embodiment, the length of the heat dissipating fins 34 extending away from the heat dissipating body 33 is greater than the distance between the adjacent heat dissipating fins 34. By improving the depth of the flow guide groove 31, the extension length of the flow guide groove 31 on the plane perpendicular to the gravity direction X is longer, so that the content of the cold air entering the flow guide groove 31 is increased, the air outside the heating element 10 can exchange heat with more cold air, and the heat dissipation efficiency of the air outside the heating element 10 is further improved.

Referring to fig. 5, which is a second simulated isotherm diagram of the nozzle device 100 at the cross section of the first opening 21 of the thermal insulation member 20, it can be observed that most of the heat of the heating member 10 is blocked, and the air heated by the heating member 10 at the first opening 21 flows upward in the gravity direction X under the action of the guiding grooves 31 and is cooled by the heat dissipation fins 34, so that the temperature of the guiding grooves 31 of the heat dissipation member 30 reaches 51.23 ℃ near the first opening 21 and is reduced to 38.38 ℃ in the middle of the heat dissipation member 30.

Referring to fig. 6, which is a third simulated isotherm diagram of the sprinkler head device 100 at the cross-section of the closed portion of the thermal insulation member 20, it can be observed that since the heat of the heating member 10 is completely blocked by the thermal insulation member 20, the temperature of the end of the heat sink 30 close to the heating member 10 is also only 35.61 ℃, and the middle portion of the heat sink 30 rises to 38.24 ℃ due to the heat exchange with the hot air discharged from the first opening 21. This can improve the heat exchange efficiency of the heat sink 30 by extending the depth of the guide grooves 31 appropriately.

Referring to fig. 3, in the present embodiment, the heat dissipating main body 33 has two first side surfaces 331 disposed opposite to each other along the first direction Y1 and two second side surfaces 332 disposed opposite to each other along the second direction Y2, the plurality of heat dissipating fins 34 disposed on the first side surfaces 331 are disposed at intervals along the second direction Y2 and extend along the first direction Y1, and the plurality of heat dissipating fins 34 disposed on the second side surfaces 332 are disposed at intervals along the first direction Y1 and extend along the second direction Y2.

In other embodiments of the present application, the heat dissipating body 33 may also be configured as a cylinder, and the plurality of heat dissipating fins 34 may be distributed at intervals along the outer circumferential surface of the heat dissipating body 33, and also may form a plurality of flow guiding grooves 31 extending along the gravity direction X. The section of the heat radiating body 33 may be determined according to the section of the heat insulating member 20 outside the heating member 10 to ensure that the air outside the heating member 10 can enter the air guide grooves 31.

In this embodiment, the width of the guiding groove 31 is the distance between two heat dissipating fins 34 located on the same side of the heat dissipating body 33, and the depth of the guiding groove 31 is the extending width of the heat dissipating fins 34 from the side of the heat dissipating body 33.

Referring to fig. 2 and 3, in the present embodiment, the heating member 10 includes a temperature uniforming portion 12 and a heating portion 13. The heat insulator 20 is provided on the outer surface of the temperature equalizing portion 12. The heating unit 13 is provided in the temperature equalizing unit 12 and heats the temperature equalizing unit 12.

The heating part 13 can heat the temperature equalizing part 12, and the temperature equalizing part 12 can uniformly heat the consumable materials in the feeding channel 40, so that the consumable materials can be uniformly melted and extruded, and the quality of the extruded consumable materials is improved. The heat insulation member 20 is disposed on the outer surface of the temperature equalizing portion 12, so as to perform a heat insulation function on the temperature equalizing portion 12, and greatly reduce the heat conducted from the temperature equalizing portion 12 to the outside air.

Alternatively, the heating part 13 includes a heating rod.

Referring to fig. 3, in the present embodiment, the heating member 10 further includes a first locking member 16, and the first locking member 16 penetrates through the temperature equalizing portion 12 and locks the heating portion 13 in the temperature equalizing portion 12.

In this embodiment, the heating member 10 further includes a temperature detecting member 62 and a second locking member 17, the temperature detecting member 62 is disposed in the temperature equalizing portion 12, the second locking member 17 is disposed through the temperature equalizing portion 12 and is used for fixing the temperature detecting member 62 to the temperature equalizing portion 12, and the temperature detecting member 62 is used for detecting the temperature of the temperature equalizing portion 12, so as to control the heating power and the heating efficiency of the heating portion 13 in real time through the control system. In this embodiment, the temperature detecting element 62 is a thermistor, and has a relatively sensitive temperature detecting performance. Alternatively, both the first locking member 16 and the second locking member 17 may be provided as screws.

Optionally, the nozzle device 100 in this embodiment further includes a housing 63, the heat insulating member 20 is accommodated in the housing 63, and the housing 63 can protect the structures such as the heat insulating member 20 and the heating member 10 well, and can further perform the heat insulating and cooling effects.

Next, referring to fig. 7 to 9, another embodiment of the present application will be described, and the structure of the head apparatus 100 of this embodiment is substantially the same as that of the head apparatus 100 of the above-described embodiment. In another embodiment of the present application, the projection of the heat insulator 20 in the gravity direction X is located inside the projection of the heat dissipation body 33 in the gravity direction X.

By reducing the size of the heat insulating member 20, the amount of heat conducted by the heating member 10 toward the outer periphery thereof through the heat insulating member 20 is further reduced, thereby further reducing the temperature of the air outside the heating member 10, and further reducing the heat radiation load of the heat radiating member 30.

In this embodiment, the heating element 10 includes a temperature equalizing block 14 and a heating block 15. The heating block 15 is sleeved on the temperature equalizing block 14 and used for heating the temperature equalizing block 14, and the heat insulation piece 20 wraps the outer surface of the heating block 15. The block 14 defines the first passage 11. The heating block 15 has a smaller surface area than the heating portion 13 and the temperature equalizing portion 12, so that the projection of the heat insulating member 20 in the gravity direction X is located inside the projection of the heat dissipating main body 33 in the gravity direction X, the heat conducted from the heating block 15 to the air outside the heating member 10 is further reduced, the air temperature outside the heating member 10 is reduced, and the heat dissipating load of the heat dissipating member 30 is reduced. In addition, the heating element 10 with a smaller volume can further reduce the overall volume of the head device 100, and improve the application range of the head device 100.

In this embodiment, the heating block 15 may be heated by various heating methods such as ceramic heating and electromagnetic heating.

Therefore, the heating element 10 in the embodiment of the present application can heat the temperature equalizing portion 12 or the temperature equalizing block 14 by various heating methods such as resistance heating and electromagnetic heating; the material of the heating part 13 or the heating block 15 may be various heating materials such as cement resistor and ceramics; the heating part 13 may be disposed inside the temperature equalizing part 12, or the heating block 15 may be disposed outside the temperature equalizing block 14, that is, the position distribution relationship between the heating structure and the temperature equalizing structure of the heating member 10 may also be determined according to actual requirements.

Referring to fig. 8 and 9, in this embodiment, the temperature equalizing block 14 includes a narrow section 142 and a wide section 143, the narrow section 142 is close to the heat sink 30, the heating block 15 is sleeved on the narrow section 142 and abuts against the wide section 143, the wide section 143 is provided with an avoiding opening 141, and the avoiding opening 141 is used for placing the temperature detecting element 62, so that the temperature detecting element 62 can accurately detect the temperature of the temperature equalizing block 14. In addition, the narrow section 142 and the wide section 143 can also facilitate assembly and matching of the temperature equalizing block 14 and the heating block 15, subsequent maintenance and treatment, and the like.

In this embodiment, the nozzle device 100 further includes a nozzle sleeve 64, and the nozzle sleeve 64 is sleeved on the nozzle 61.

Referring to fig. 9, in this embodiment, the throat 50 includes a first connecting tube 55 and a second connecting tube 56. The first connection pipe 55 is interference-fitted to the heat sink 30. The small end of the second connection pipe 56 is inserted into the first connection pipe 55 and connected to the first connection pipe 55, and the large end of the second connection pipe 56 is interference-fitted to the heating member 10. The second connection pipe 56 of this embodiment ensures a stable connection of the throat 50 to the radiator 30 or the heating element 10 without a press piece.

Referring to fig. 9, in this embodiment, the outer wall of the heat insulating member 20 is provided with two first through holes 23 and one second through hole 24, the two first through holes 23 are used for accommodating the heating block 15, and the second through hole 24 is used for accommodating the temperature detecting member 62, so that the heating block 15 and the temperature detecting member 62 are connected to external equipment for control and energy transmission. Meanwhile, the two first through holes 23 and the one second through hole 24 are disposed on the same side of the heat insulating member 20, which can play a role in facilitating wire arrangement.

Referring to fig. 10, the present application further provides a 3D printing apparatus 200 including the nozzle device 100 as described above.

Since the 3D printing apparatus 200 includes the ejection head device 100 according to any of the embodiments, beneficial effects of the ejection head device 100 according to any of the embodiments are provided, and are not described herein again.

As shown in fig. 10, the 3D printing apparatus 200 further includes a box 201, a transferring mechanism 202 and a printing platform 203, the transferring mechanism 202 and the printing platform 203 are disposed in the box 201 at an interval along a first direction Y1, the nozzle device 100 is connected to the transferring mechanism 202, and can be driven by the transferring mechanism 202 to move relative to the printing platform 203, and can spray the consumable melted by the heating element 10 onto the printing platform 203 to complete 3D printing.

In this embodiment, the transfer mechanism 202 is disposed above the printing platform 203, but in other embodiments of the present application, the transfer mechanism 202 may be disposed below the printing platform 203 according to different types of consumables, and no specific limitation is required.

The transfer mechanism 202 in the present embodiment may be a robot arm, a multi-axis drive structure, or a delta robot.

Although the present application has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the present application.

Claims (10)

1. A spray head apparatus, comprising:

a heating member;

the heat insulation part wraps the outer surface of the heating part;

the side of the heat dissipation part is limited with a diversion trench extending along the gravity direction, the diversion trench is used for guiding the air near the heating part to flow along the direction deviating from the direction of the heating part in the gravity direction, and the heat dissipation part and the heating part jointly limit a feeding channel for allowing consumables to pass through.

2. The spray head apparatus of claim 1, wherein: the heat dissipation piece comprises a heat dissipation main body and a plurality of heat dissipation fins, the heat dissipation fins are sequentially arranged on the side face of the heat dissipation main body at intervals, the heat dissipation fins extend from the side face of the heat dissipation main body along the direction perpendicular to the gravity direction, and the adjacent two heat dissipation fins limit the flow guide grooves.

3. The spray head apparatus of claim 2, wherein: the length of the extending direction of the radiating fins far away from the radiating main body is larger than the distance between the adjacent radiating fins.

4. The spray head apparatus of claim 2, wherein: the projection of the heat insulation piece along the gravity direction is positioned on the inner side of the projection of the heat dissipation main body along the gravity direction.

5. The spray head device of claim 4, wherein: the heating member includes:

a temperature equalizing block;

the heating block is sleeved on the temperature equalizing block and used for heating the temperature equalizing block, and the heat insulation piece wraps the outer surface of the heating block.

6. The spray head device of claim 1, wherein: the heating element defines a first channel, the heat dissipation element defines a second channel, the spray head device further comprises a throat, one end of the throat is connected with the heat dissipation element and communicated with the second channel, the other end of the throat penetrates through the heat insulation element and is connected with the heating element and communicated with the first channel, and the first channel and the second channel form the feeding channel.

7. The spray head apparatus of claim 6, wherein: the throat pipe comprises:

a heat conductive connection part connected to the heating member;

and one end of the heat insulation pipe is connected with the heat radiation piece and communicated with the second channel, and the other end of the heat insulation pipe is connected with the heat conduction connecting part.

8. The spray head apparatus of claim 7, wherein: the heat conduction connecting portion are equipped with the briquetting, the heating member orientation the surface of radiating piece is equipped with the recess, the briquetting compress tightly in the tank bottom wall of recess, just the briquetting is not higher than the heating member orientation the surface of radiating piece.

9. The spray head apparatus of claim 1, wherein: the heating member includes:

the heat insulation piece is arranged on the outer surface of the temperature equalizing part;

the heating part is arranged on the temperature equalizing part and used for heating the temperature equalizing part.

10. 3D printing device, characterized in that it comprises a nozzle device according to any one of claims 1 to 9.

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