CN216506775U - A nozzle device for 3D prints - Google Patents

Abstract

The utility model provides a nozzle device for 3D printing, comprising a first feeding pipe, one end of the first feeding pipe is connected with a material source of a solid model, and the other end is connected with a first pipe side inlet of a radiator; One end of the second feed pipe is connected to the material source of the support assembly, and the other end is connected to the second pipe side inlet of the radiator; the first pipe side outlet of the radiator is connected to one end of the first straight pipe, and the first straight pipe The other end is connected with the first nozzle; the outlet of the second pipe side of the radiator is connected with one end of the second straight pipe, and the other end of the second straight pipe is connected with the second nozzle; the shell side of the radiator is connected with a cooling medium; A heating block is sleeved on the outside of the first straight-through pipe, and the second heating block is sleeved on the outside of the second straight-through pipe; the utility model realizes the obvious separation of different areas of the 3D model, and avoids the trimming process to the part of the solid model. At the same time, it prevents the material from overheating and naturally flows out through the nozzle, ensuring the accuracy of the printing process.

Description

A nozzle device for 3D printing

technical field

The utility model belongs to the technical field of 3D printing, in particular to a nozzle device for 3D printing.

Background technique

At present, 3D printing technology is becoming more and more mature; it is a manufacturing technology that builds materials layer by layer to create physical objects based on digital models; it is involved in aerospace, automotive, medical, consumer goods and education industries, especially in some industries In the field, higher requirements are put forward for the manufacture of large-scale and complex precision components such as titanium alloys, high-strength steels, high-temperature alloys, and aluminum alloys.

Throughout the existing 3D printing products, in order to prevent the printed products from being deformed due to stress concentration, or for the continuity of printing, the original designers often added supports in some key parts to ensure the quality of printing; the printing is completed. After that, the supports are manually cut off, which greatly reduces the printing efficiency; however, in the face of some smaller-sized prints, trimming the supports is very easy to destroy the printed solid model. For this reason, a key technology with simple structure and easy to distinguish printing solid model and supporting components is urgently needed.

Utility model content

Aiming at the technical problems existing in the prior art, the utility model provides a nozzle device for 3D printing, so as to solve the problem that in the existing 3D printing process, it is impossible to distinguish the printing solid model from the support assembly, and the process of trimming the support assembly, Technical issues with fragile solid models.

In order to achieve the above object, the technical scheme adopted by the present utility model is:

The utility model provides a nozzle device for 3D printing, comprising a first feeding pipe, a second feeding pipe, a radiator, a first straight pipe, a second straight pipe, a first heating block, a second heating block, a first nozzle and a second nozzle; one end of the first feeding pipe is connected with the material source of the solid model, and the other end is connected with the first pipe side inlet of the radiator; one end of the second feeding pipe is connected with the material source of the support assembly , and the other end is connected to the second pipe side inlet of the radiator;

The first pipe-side outlet of the radiator is connected to one end of the first straight pipe, and the other end of the first straight pipe is connected to the first nozzle; the second pipe-side outlet of the radiator is connected to one end of the second straight pipe, and the first straight pipe is connected to one end of the second straight pipe. The other end of the two straight pipes is connected with the second nozzle;

A cooling medium passes through the shell side of the radiator; the first heating block is sleeved on the outside of the first straight pipe, and the second heating block is sleeved on the outside of the second straight pipe.

Further, the shell-side inlet of the radiator is connected to the cooling working medium source, and the shell-side outlet of the radiator is connected to the cooling working medium circulation device; the cooling working medium circulating device is used to refrigerate the cooling working medium after heat exchange. The latter cooling medium is passed into the cooling medium source.

Further, the first heating block and the second heating block are made of copper heat-conducting blocks; the copper-made heat-conducting blocks are evenly provided with a number of heating holes; each heating hole is respectively provided with a thermal resistance, and the power supply end of the thermal resistance is External power connection.

Further, the material source for the solid model stores the material for printing the solid body, and the material source for the support component stores the material for printing the support component.

Further, the color of the material for printing the solid and the material for printing the support component is different.

Further, a first pipe joint is arranged between the first feed pipe and the first pipe side inlet of the radiator; one end of the first pipe joint is communicated with the first feed pipe, and the other end of the first pipe joint is connected with the radiator. The first pipe side inlet is connected.

Further, a second pipe joint is provided between the second feed pipe and the second pipe side inlet of the radiator; one end of the second pipe joint is communicated with the second feed pipe, and the other end of the second pipe joint is connected to the radiator. The second pipe side inlet is connected.

Further, a first solenoid valve switch is provided on the first nozzle, and a second solenoid valve switch is provided on the second nozzle; the first solenoid valve switch and the second solenoid valve switch are interlocked.

Compared with the prior art, the beneficial effects of the present utility model are:

The utility model provides a nozzle device for 3D printing. By arranging two nozzles, and connecting the two nozzles with a material source of a solid model and a material source of a support component through a pipe, the solid model is printed by using the material of the solid model, The support component is printed with the support component material, which realizes the obvious separation of different areas of the 3D model, which facilitates the trimming of the support component and avoids the damage to the solid model part during the trimming process. At the same time, by setting the heat sink, the material is prevented from overheating The natural flow through the nozzle ensures the accuracy of the printing process.

Further, the shell side outlet of the radiator is connected to the cooling medium circulation device, so as to realize the recycling of the cooling medium.

Further, the heating block is made of copper heat-conducting block, which has high heat-conducting efficiency and good temperature control accuracy.

Further, the material used for printing the solid model and the material used for printing the support component are distinguished by different colors, which improves the recognition of the support component and ensures the accuracy of the trimming process of the support component.

Further, by arranging a pipe joint between the feed pipe and the pipe side inlet of the radiator, the reliability of the connection between the feed pipe and the radiator is improved.

Further, by setting the solenoid valve switches on the nozzles and interlocking the solenoid valve switches on the two nozzles, the accuracy of the solid model printing and the printing of the support components is ensured.

Description of drawings

FIG. 1 is a front view of the nozzle device for 3D printing according to the embodiment;

FIG. 2 is a side view of the nozzle device for 3D printing according to the embodiment.

Among them, 1 first feed pipe, 2 second feed pipe, 3 first pipe joint, 4 second pipe joint, 5 radiator, 6 first straight pipe, 7 second straight pipe, 8 first heating block , 9 second heating block, 10 first nozzle, 11 second nozzle, 12 thermal resistance.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the following specific embodiments will further describe the present invention in detail. It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not intended to limit the present invention.

The utility model provides a nozzle device for 3D printing, comprising a first feeding pipe 1, a second feeding pipe 2, a first pipe joint 3, a second pipe joint 4, a radiator 5, a first straight pipe Pipe 6 , second straight pipe 7 , first heating block 8 , second heating block 9 , first nozzle 10 and second nozzle 11 .

One end of the first feeding pipe 1 is connected with the material source of the solid model, and the other end of the first feeding pipe 1 is connected with one end of the first pipe joint 3; the other end of the first pipe joint 3 is connected with the first pipe of the radiator 5 The side inlet is connected; one end of the second feed pipe 2 is connected with the material source of the support assembly, and the other end of the second feed pipe 2 is connected with one end of the second pipe joint 4; the other end of the second pipe joint is connected with the radiator 5. The second pipe side inlet connection.

The first tube side outlet of the radiator 5 is connected to one end of the first straight tube 6, and the other end of the first straight tube 6 is connected to the first nozzle 10; the second tube side outlet of the radiator 5 is connected to the second straight tube 7. One end is connected, and the other end of the second straight pipe 7 is connected with the second nozzle 11 .

A cooling medium is passed through the shell side of the radiator 5 ; the first heating block 8 is sleeved outside the first straight tube 6 , and the second heating block 9 is sleeved outside the second straight pipe 7 .

The nozzle device for 3D printing according to the present utility model, by setting two nozzles, and connecting the two nozzles with the material source of the solid model and the material source of the support component respectively through the pipeline, the solid model is printed with the solid model material, and the solid model is printed by using the solid model material. The material of the support component is printed on the support component, which realizes the obvious separation of different areas of the 3D model, which is convenient for the trimming of the support component and avoids the damage to the solid model part during the trimming process. The natural flow through the nozzle ensures the accuracy of the printing process.

Example

As shown in Figures 1-2, this embodiment provides a nozzle device for 3D printing, including a first feed pipe 1, a second feed pipe 2, a first pipe joint 3, and a second pipe The joint 4 , the radiator 5 , the first straight pipe 6 , the second straight pipe 7 , the first heating block 8 , the second heating block 9 , the first nozzle 10 and the second nozzle 11 .

One end of the first feeding pipe 1 is connected with the material source of the solid model, and the other end of the first feeding pipe 1 is connected with one end of the first pipe joint 3; the other end of the first pipe joint 3 is connected with the first pipe of the radiator 5 The side inlet is connected; one end of the second feed pipe 2 is connected with the material source of the support assembly, and the other end of the second feed pipe 2 is connected with one end of the second pipe joint 4; the other end of the second pipe joint is connected with the radiator 5. The second pipe side inlet is connected; by arranging a pipe joint between the feed pipe and the pipe side inlet of the radiator, the reliability of the connection between the feed pipe and the radiator is improved.

In this embodiment, the material for printing the solid model is stored in the material source of the solid model, and the material for printing the supporting component is stored in the material source of the support component; the material for printing the solid model is the same as the material for printing the supporting component The material properties are the same, but the color of the material is different; the material used for printing the solid model and the material used for printing the support component are distinguished by different colors, which improves the recognition of the support component and ensures the smoothness of the support component trimming process. accuracy.

The first tube side outlet of the radiator 5 is connected to one end of the first straight tube 6, and the other end of the first straight tube 6 is connected to the first nozzle 10; the second tube side outlet of the radiator 5 is connected to the second straight tube 7. One end is connected, and the other end of the second straight pipe 7 is connected with the second nozzle 11 .

The shell side of the radiator 5 is connected with a cooling working medium; wherein, the shell side inlet of the radiator 5 is connected with the cooling working medium source, and the shell side outlet of the radiator 5 is connected with the cooling working medium circulation device; In order to refrigerate the cooling working medium after heat exchange, the cooling working medium after cooling is passed into the cooling working medium source; the shell side outlet of the radiator is connected with the cooling working medium circulation device to realize the recycling of the cooling working medium.

The first heating block 8 is sleeved on the outside of the first straight tube 6, and the second heating block 9 is sleeved on the outside of the second straight pipe 7; the first heating block 8 and the second heating block 9 are made of copper heat conduction blocks; The copper heat-conducting block is evenly provided with a number of heating holes; each heating hole is respectively provided with a thermal resistance 12, and the power supply end of the thermal resistance 12 is connected to an external power supply; in this embodiment, the heating block is a copper-made heat-conducting block, High thermal conductivity and good temperature control accuracy.

The first nozzle 10 is provided with a first solenoid valve switch, and the second nozzle 11 is provided with a second solenoid valve switch; the first solenoid valve switch and the second solenoid valve switch are interlocked; by arranging a solenoid valve on the nozzle switch, and interlock the solenoid valve switches on the two nozzles to ensure the accuracy of solid model printing and support assembly printing.

Instructions:

In this embodiment, the raw materials for printing the solid model and the raw materials for printing the support components enter through two feed pipes respectively; and in the two straight pipes, respectively, under the heating action of the heating block, the raw materials are made from solid state. It becomes liquid and is sprayed out by the nozzle at the end of the straight pipe to realize the solid structure of printing the solid model and the supporting component in the working plane; wherein, the heating block is heated by a thermal resistance to make the temperature reach the preset temperature value ; During the printing process, when printing to the solid model, the first nozzle is in the state of spraying material, and at the same time, the second nozzle is in the closed state; when printing to the support assembly, the first nozzle is in the closed state, and the second nozzle is in the spraying state The state of the material, and then realize the distinction between the printed solid model and the support components.

The nozzle device for 3D printing described in this embodiment prints by setting two nozzles; the two nozzles are drawn through a pipeline with two different colors of printing materials; The material for printing the solid model, and the second nozzle ejects the material for printing the support component; during the printing process, the solid model and the support component are printed in different colors; after the printing is completed, the required solid model is obtained by manually trimming the support component ; This embodiment realizes the rapid resolution and separation of the solid model and the support assembly; thus ensuring the quality and efficiency of printing.

When in use, the material of the solid model and the material of the support component are respectively filled through the two feeding tubes; in order to ensure the quality of printing, the material properties of the solid model material and the material of the supporting component of the two feeding tubes are the same, and there is only a difference in color; printing During the process of printing, through the identification of the solid model, the material of the solid model is used to print the solid model; when the support component is printed, another nozzle is used to spit material, so as to ensure that the printed solid model and the support component are of different colors, thereby ensuring the support The removal of components is more convenient.

The nozzle device for 3D printing of the utility model can distinguish the solid model and the support component in different colors, can prevent the solid model from being damaged in the process of shearing support, accurately and quickly identify the position of the support component, and ensure the The quality of processing; so that after the printing is completed, the support components added in the printing process can be quickly removed, and after the key parts with smaller size are printed, the solid model and the supporting components can be well distinguished, and the printed solid model can be well protected. completeness.

The above-mentioned embodiment is only one of the embodiments that can realize the technical solution of the present invention. The scope of protection of the present invention is not only limited by the present embodiment, but also included in the technical scope disclosed by the present invention. Any Variations, substitutions, and other embodiments will readily occur to those skilled in the art.

Claims (7)

1. A nozzle device for 3D printing is characterized by comprising a first feeding pipe (1), a second feeding pipe (2), a radiator (5), a first straight pipe (6), a second straight pipe (7), a first heating block (8), a second heating block (9), a first nozzle (10) and a second nozzle (11); one end of the first feeding pipe (1) is connected with a solid model material source, and the other end of the first feeding pipe is connected with a first pipe side inlet of the radiator (5); one end of the second feeding pipe (2) is connected with the material source of the supporting component, and the other end of the second feeding pipe is connected with a second pipe side inlet of the radiator (5);

a first pipe side outlet of the radiator (5) is connected with one end of a first straight-through pipe (6), and the other end of the first straight-through pipe (6) is connected with a first nozzle (10); an outlet on the second pipe side of the radiator (5) is connected with one end of a second straight-through pipe (7), and the other end of the second straight-through pipe (7) is connected with a second nozzle (11);

a cooling working medium is introduced to the shell side of the radiator (5); the first heating block (8) is sleeved on the outer side of the first straight-through pipe (6), and the second heating block (9) is sleeved on the outer side of the second straight-through pipe (7).

2. A nozzle arrangement for 3D printing according to claim 1, characterized in that the shell-side inlet of the heat sink (5) is connected to a source of cooling medium and the shell-side outlet of the heat sink (5) is connected to a cooling medium circulation means; and the cooling working medium circulating device is used for refrigerating the cooling working medium subjected to heat exchange, and the refrigerated cooling working medium is introduced into the cooling working medium source.

3. A nozzle device for 3D printing according to claim 1, wherein the first heating block (8) and the second heating block (9) are both copper heat conducting blocks; a plurality of heating holes are uniformly formed in the copper heat conduction block; each heating hole is internally provided with a thermal resistor (12), and the power supply end of each thermal resistor (12) is connected with an external power supply.

4. A nozzle arrangement for 3D printing according to claim 1, wherein the material for printing the solid model is stored in a solid model material source, and the material for printing the support member is stored in a support member material source.

5. A nozzle device for 3D printing according to claim 1, characterized in that a first pipe joint (3) is provided between the first feed pipe (1) and the first pipe-side inlet of the heat sink (5); one end of the first pipe joint (3) is communicated with the first feeding pipe (1), and the other end of the first pipe joint (3) is communicated with a first pipe side inlet of the radiator (5).

6. A nozzle device for 3D printing according to claim 1, wherein a second pipe joint (4) is provided between the second feed pipe (2) and the second pipe-side inlet of the heat sink (5); one end of the second pipe joint (4) is communicated with the second feeding pipe (2), and the other end of the second pipe joint (4) is communicated with a second pipe side inlet of the radiator (5).

7. A nozzle device for 3D printing according to claim 1, characterized in that a first solenoid valve switch is arranged on the first nozzle (10) and a second solenoid valve switch is arranged on the second nozzle (11); the first electromagnetic valve switch and the second electromagnetic valve switch are arranged in an interlocking mode.

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