CN219446152U

CN219446152U - Cooling printing nozzle structure of 3D printer and printer

Info

Publication number: CN219446152U
Application number: CN202320628738.7U
Authority: CN
Inventors: 赵杰; 宋翔
Original assignee: Anhui Huizheng Electronic Technology Co ltd
Current assignee: Anhui Huizheng Electronic Technology Co ltd
Priority date: 2023-03-28
Filing date: 2023-03-28
Publication date: 2023-08-01
Anticipated expiration: 2033-03-28

Abstract

The utility model relates to the technical field of printing spray heads, in particular to a cooling printing spray head structure of a 3D printer and the printer, wherein the cooling printing spray head structure comprises: the shell is connected with a spray head, provided with a mounting cavity, and connected with an air duct; the fan is arranged in the mounting cavity and used for reducing the surrounding temperature of the spray head; the control component is arranged in the mounting cavity and is used for controlling the opening and closing of the air duct so as to adjust the air quantity; according to the utility model, the temperature is monitored in real time through the thermistor, when the temperature is lower than the set temperature, the throat is cooled, when the temperature is higher than the set temperature, the nozzle is directly cooled, so that the shrinkage of a printing cross section caused by continuously cooling the nozzle and a printing area by the fan when the temperature of the nozzle is low is effectively prevented, the success rate of model printing is improved, and the practicability is very strong.

Description

Cooling printing nozzle structure of 3D printer and printer

Technical Field

The utility model relates to the technical field of 3D printing spray heads, in particular to a cooling printing spray head structure of a 3D printer and the printer.

Background

Along with the development of 3D printing technology, 3D printer is widely applied to each field, in the printing process, raw materials are rolled on the material tray, raw materials are directly led out from the material tray and are led into the spray heads, then follow-up operations such as heating are carried out, when heating, the temperature of the spray heads of the printer can reach 450 ℃, the temperature of a printing cavity can reach more than 100 ℃, if the heat of a good heat dissipation nozzle is not transferred to a throat and a motor above the printing cavity during 3D printing, the filament outlet of the printing head is influenced by overheating, but 3D printing is carried out layer by layer along the cross section of a model, when the printing is just started, the temperature of the spray heads is still lower, a fan is continuously carrying out heat dissipation on the spray heads and the printing area, and when the cross section of the printing model is larger, the material of each layer can be sufficiently dissipated, so that the whole cross section is contracted, a relatively obvious transition layer is formed, modeling failure is caused, and printing materials are wasted.

Disclosure of Invention

The utility model aims to provide a cooling printing spray head structure of a 3D printer and the printer, so as to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a cooling print head structure of a 3D printer, comprising:

the spray head comprises a shell, wherein the shell is connected with a spray head, a mounting cavity is formed in the shell, and the mounting cavity is connected with an air duct;

the fan is arranged in the mounting cavity and used for reducing the surrounding temperature of the spray head; and

the control assembly is arranged in the installation cavity and used for controlling the opening and closing of the air duct so as to adjust the air quantity.

Preferably, the shell is provided with a throat, the spray head is fixedly connected to the throat, and a radiating fin is arranged outside the throat.

Preferably, the installation cavity is provided with an air outlet and an air inlet, the air outlet is arranged on the side wall of the installation cavity, the air inlet is arranged at the top of the installation cavity, and the fan is fixedly connected with the air outlet.

Preferably, the air inlet and the air outlet are both provided with dustproof nets.

Preferably, the housing is provided with a heat shield for isolating the spray head and the mounting cavity from each other.

Preferably, four mounting cavities are formed around the shell, four fans are correspondingly arranged, and the four fans are mutually connected in parallel.

Preferably, the control assembly comprises a thermistor, a rotating motor and a closing plate, wherein the thermistor is fixedly connected to the shell, the rotating motor is connected with the thermistor in series, and the rotating motor is used for controlling the closing plate to close the air duct.

Preferably, the sealing plate is connected with a first conductive block, the shell is fixedly connected with a second conductive block, and the first conductive block is communicated with a circuit when the first conductive block and the second conductive block are in contact with each other.

Preferably, a switch button is arranged on the side wall of the installation cavity, and the switch button is used for controlling the switch of the fan.

A printer comprises the cooling printing nozzle structure of the 3D printer.

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, the temperature is monitored in real time through the thermistor, when the temperature is lower than the set temperature, the throat is cooled, when the temperature is higher than the set temperature, the nozzle is directly cooled, so that the shrinkage of a printing cross section caused by continuously cooling the nozzle and a printing area by the fan when the temperature of the nozzle is low is effectively prevented, the success rate of model printing is improved, and the practicability is very strong.

Drawings

FIG. 1 is a schematic view of an isometric structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of the present utility model (the direction of the arrow in the figure is the direction of gas flow);

FIG. 3 is a schematic view of a partial enlarged structure of the area A in FIG. 2;

FIG. 4 is a schematic view of the enlarged partial structure of the area B in FIG. 2;

FIG. 5 is a schematic view of an isometric view of a nozzle and throat of the present utility model;

FIG. 6 is a schematic view of the lower isometric structure of the present utility model;

FIG. 7 is a schematic view of a cross-sectional structure within a mounting cavity of the present utility model;

fig. 8 is a circuit diagram of a rotating motor according to the present utility model (in which the opening and closing of S is achieved by the contact between the first conductive block and the second conductive block).

In the figure: 1 shell, 2 shower nozzle, 3 installation cavity, 4 wind channel, 5 fans, 6 throats, 7 fin, 8 air outlets, 9 air inlets, 10 dust screen, 11 heat insulating board, 12 thermistor, 13 rotating motor, 14 closing plate, 15 shift knob, 16 conducting block one, 17 conducting block two, 301 stopper.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-8, the present utility model provides a technical solution:

a cooling printing nozzle structure of a 3D printer, as shown in the attached figure 1 of the specification, comprises:

the device comprises a shell 1, wherein the shell 1 is made of carbon fiber, the shell 1 is used for installing other components of the device, the shell 1 is fixedly connected to a spray head 2 of a 3D printer through bolts, a mounting cavity 3 is formed in the shell 1, the mounting cavity 3 is connected with an air duct 4, the air duct 4 is used for changing the blowing direction of a fan 5, and the air flowing direction of the air duct 4 is opposite to the spray head 2;

the fan 5, fan 5 is XHX5010S/B12H type direct current fan that Shenzhen XHX5010S/B12H type electron limited company produced, and its operating voltage is 12V, and this model fan amount of wind is big and high temperature resistant, can not take place deformation at high temperature state after long-time use the axle and the blade of fan, fan 5 fixed connection in installation cavity 3, and fan 5 is used for reducing shower nozzle 2 ambient temperature.

The shell 1 is provided with the throat pipe 6, the material of the throat pipe 6 is the same as that of the spray head 2, the throat pipe 6 and the spray head 2 are fixedly connected through threads, the throat pipe 6 is used for conveying printing materials to the spray head 2, the radiating fins 7 are arranged outside the throat pipe 6, the radiating fins 7 are made of brass, compared with other materials, the brass has good radiating performance and high cost performance, the radiating fins 7 are fin type radiators, the fin type radiators have large contact area with air and small occupied area, namely, when the fan 5 carries out air cooling and radiating on the radiating fins 7, the radiating efficiency is higher; the installation cavity 3 is provided with an air outlet 8 and an air inlet 9, the air outlet 8 is arranged on the side wall of the installation cavity 3, the air outlet 8 is used for installing the fan 5 and transmitting heat in the radiating fins 7 to the outer side of the shell 1, the air inlet 9 is arranged at the top of the installation cavity 3, the air inlet 9 is used for transmitting outside air into the installation cavity 3, as the printing material heating device is arranged at the nozzle 2 and the shell 1 is arranged above the nozzle 2, the air below the shell 1 is higher than the shell 1, the air inlet 9 is arranged above the shell 1, the air outlet 8 is arranged on the side wall of the shell 1, when wind power circulation is carried out, the air with lower temperature can be transmitted into the installation cavity 3, hot air in the installation cavity 3 is blown out of the installation cavity 3 through the air outlet 8, and the fan 5 is fixedly connected with the air outlet 8; the air inlet 9 and the air outlet 8 are both provided with a dustproof net 10, the dustproof net 10 is made of brass, and the dustproof net 10 is used for isolating outside dust; the shell 1 is provided with a heat insulating plate 11, the heat insulating plate 11 is fixedly connected to the spray head 2, the heat insulating plate 11 is made of brass, and the heat insulating plate 11 is used for isolating the spray head 2 and the mounting cavity 3 from each other so as to prevent the shell 1 from being deformed due to heating caused by high temperature; four installation cavities 3 have been seted up around in casing 1, fan 5 corresponds to be equipped with four, and four fans 5 are parallelly connected to set up each other, encircle to set up in installation cavity 3 all around can all-round heat dissipation to the choke 6 of shower nozzle 2, and when certain fan 5 damages, other fans 5 still can dispel the heat to choke 6 of shower nozzle 2 to fan 5 that parallel set up still, thereby avoid because fan 5 damages two and lead to shower nozzle 2 overheated influence the condition emergence of printing head silk.

The control component is arranged in the installation cavity 3 and is used for controlling the opening and closing of the air duct 4 so as to regulate the air quantity, and comprises a thermistor 12, a rotating motor 13 and a sealing plate 14, as shown in the attached drawing 7 of the specification, one end of the thermistor 12 is connected to the spray head 2 and then fixedly connected to the side wall of the installation cavity 3 through the heat insulation plate 11, the thermistor 12 is a negative temperature coefficient thermistor, namely, the lower the resistivity is when the temperature is higher, the rotating motor 13 can be started when the temperature is higher than the set temperature, so as to drive the sealing plate 14 to rotate, the rotating motor 13 is a high-temperature-resistant direct current motor, the rotating motor 13 supplies power through a battery, the rotating motor 13 and the thermistor 12 are connected in series, the rotating motor 13 is used for controlling the sealing plate 14 to seal the air duct 4, the sealing plate 14 is connected with a conducting block I16, the shell 1 is fixedly connected with a conducting block II 17, the conducting block II 17 is fixedly connected to the side wall of the installation cavity 3, when the sealing plate 14 seals the air duct 4, the conducting block I16 and the conducting block II 17 are mutually contacted, a circuit is communicated, and when the sealing plate 14 seals the air duct 4, the conducting block I16 and the conducting block II 17 are mutually separated, so that the rotating motor 13 can stop moving mutually; the switch buttons 15 are arranged on the side wall of the installation cavity 3, the switch buttons 15 are used for switching the fans 5, four switch buttons 15 are arranged, and the four switch buttons 15 are respectively used for independently controlling the corresponding fans 5 to switch.

Working principle: when the air conditioner is used, the shell 1 is sleeved outside the throat pipe 6, the spray head 2 is fixedly connected to the throat pipe 6 through threads, then the fan 5 is started by pressing the switch button 15, the air duct 4 is always closed by the closing plate 14 when the temperature does not reach the set temperature, at the moment, the fan 5 can drive the air flow in the mounting cavity 3 to flow to the air outlet 8 along the air inlet 9 through the cooling fins 7, and therefore the components above the spray head 2 are continuously cooled through air cooling; when the set temperature is reached, the temperature of the thermistor 12 is increased, the resistance value is reduced, at the moment, the rotating motor 13 is started to drive the sealing plate 14 to rotate until the sealing plate 14 reaches the limiting block 301, at the moment, the first conductive block 16 and the second conductive block 17 are separated from each other, the circuit is disconnected, and the sealing plate 16 falls under the influence of gravity; if the temperature is still higher than the set temperature, when the first conductive block 16 and the second conductive block 17 are in contact with each other, the rotary motor 13 will be restarted, so that the sealing plate 14 reaches the limiting block 301 again; if the temperature is lower than the set temperature, the resistance of the thermistor 12 will increase, so that the rotation of the rotation motor 13 is stopped, and the closing plate 16 falls under the influence of gravity until the air duct 4 is closed.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Cooling of 3D printer prints shower nozzle structure, a serial communication port includes:

2. The cooling printing nozzle structure of a 3D printer according to claim 1, wherein: the shell is provided with a throat, the spray head is fixedly connected to the throat, and radiating fins are arranged outside the throat.

3. The cooling printing nozzle structure of a 3D printer according to claim 1, wherein: the installation cavity is provided with an air outlet and an air inlet, the air outlet is arranged on the side wall of the installation cavity, the air inlet is arranged at the top of the installation cavity, and the fan is fixedly connected with the air outlet.

4. A 3D printer cooling print head structure according to claim 3, wherein: the air inlet and the air outlet are both provided with dustproof nets.

5. The cooling printing nozzle structure of a 3D printer according to claim 1, wherein: the shell is provided with a heat insulating plate which is used for isolating the spray head and the installation cavity from each other.

6. The cooling printing nozzle structure of a 3D printer according to claim 1, wherein: four mounting cavities are formed around the shell, four fans are correspondingly arranged, and the four fans are mutually connected in parallel.

7. The cooling printing nozzle structure of a 3D printer according to claim 1, wherein: the control assembly comprises a thermistor, a rotating motor and a closing plate, wherein the thermistor is fixedly connected to the shell, the rotating motor is connected with the thermistor in series, and the rotating motor is used for controlling the closing plate to close the air duct.

8. The cooling printing nozzle structure of a 3D printer according to claim 7, wherein: the sealing plate is connected with a first conductive block, the shell is fixedly connected with a second conductive block, and the first conductive block is communicated with the second conductive block through a circuit when the first conductive block and the second conductive block are in contact with each other.

9. The cooling printing nozzle structure of a 3D printer according to claim 1, wherein: and the side wall of the mounting cavity is provided with a switch button which is used for controlling the switch of the fan.

10. A printer comprising a cooling printing head structure of a 3D printer according to any one of claims 1 to 9.