3D printer nozzle

Abstract

The utility model relates to the technical field of 3D printer components, in particular to a 3D printer nozzle which comprises a nozzle body, and a connecting column is fixedly mounted at the top of the nozzle body. The electromagnet is started and powered on, the electromagnet can drive the sliding disc to be attracted to the bottom of the fixed disc, in the process, the protection piece, the movable piece and the wiping cotton move upwards to expose and rub the nozzle body, dust on the nozzle body can be wiped, and the nozzle body is convenient to use; when the nozzle body does not need to be used, the nozzle body and the electromagnet are closed, at the moment, the sliding disc vertically slides downwards due to the dead weight, the wiping cotton can cover and protect the nozzle body again, and in the descending process of the wiping cotton, the wiping cotton rubs with the surface of the nozzle body, so that dust adhering to the nozzle body in the using process is wiped, and the using effect of the nozzle body is improved. The interference of dust on the nozzle main body can be reduced, so that the use effect of the nozzle main body can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printer components, in particular to a 3D printer nozzle. Background Art

[0002] 3D printing technology is also known as rapid prototyping manufacturing technology. Its basic principle is to repeatedly print a certain thickness of material on a platform, in a cycle, until the entire molded part is generated. Among them, the nozzle is the simplest and most critical part of the 3D printer. It is very important to maintain it in daily life. In order to ensure the success rate of model printing and extend the service life of the nozzle, a protective structure is usually set on the nozzle.

[0003] For example, the patent specification of an existing Chinese patent (publication number: CN210309067U) discloses a 3D printer nozzle. When the nozzle is not in use, the magnet blocks arranged on the sides of the four protective plates attract each other, so that the sides of the four protective plates are in close contact, and the discharge port at the lower end of the nozzle is sealed and protected to prevent dust from entering the discharge port at the lower end of the nozzle.

[0004] However, in the implementation of the relevant technology, it is found that the 3D printer nozzle of the above design has the following problems: although the 3D printer nozzle can be dust-proof when the nozzle is not in use, the nozzle is exposed when in use, which makes dust adhere to the nozzle, and the 3D printer nozzle involved in the above can only play a protective role, so that dust always adheres to the nozzle, which may affect the use effect of the nozzle. In view of this, a 3D printer nozzle is provided to overcome the above defects. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a 3D printer nozzle.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a 3D printer nozzle, comprising a nozzle body, a connecting column is fixedly installed on the top of the nozzle body, a fixed plate is fixedly sleeved on the connecting column, a piston rod is arranged at the bottom of the fixed plate, a sliding plate is arranged at the telescopic end of the piston rod, an electromagnet is arranged at the top of the sliding plate, the fixed plate is made of iron, and the fixed plate and the electromagnet are magnetically connected, two protective parts are symmetrically arranged at the bottom of the sliding plate, movable parts are arranged on the opposite sides of the two protective parts, a wiping cotton is arranged on one side of the movable part, and the wiping cotton is against the nozzle body.

[0007] As a further description of the above technical solution: the number of the electromagnets is four, and the four electromagnets are symmetrically arranged on both sides of the top of the sliding plate. The setting of multiple electromagnets can ensure that the adsorption force is increased when the electromagnets are turned on, thereby ensuring that the sliding plate can be normally adsorbed with the fixed plate.

[0008] As a further description of the above technical solution: a return spring is provided on one side opposite to the two protective parts, and the other end of the return spring is fixedly connected to the movable part. By providing the return spring, since the bottom of the nozzle body is wide at the top and narrow at the bottom, the movable part can compress the return spring and move closer to the protective part when the wiping cotton slides upward, thereby avoiding the problem of interference in the movement of the movable part and ensuring the normal operation of the nozzle.

[0009] As a further description of the above technical solution: heat sinks are provided on opposite sides of the two movable parts, and a plurality of heat dissipation holes are opened on the protective part, which can quickly absorb the heat generated by the nozzle body and dissipate it, which helps to extend the service life of the nozzle and improve its performance.

[0010] As a further description of the above technical solution: the heat sink is made of copper.

[0011] As a further description of the above technical solution: the outer surface of the connecting column is provided with an external thread, and the external thread is used to cooperate with the internal threaded hole adapted on the printer. The internal threaded hole is opened in advance at the appropriate position of the printer, and then the connecting column is screwed into its internal threaded hole, so that the nozzle can be easily installed.

[0012] As a further description of the above technical solution: the number of the piston rods is two, and the two piston rods are symmetrically arranged between the fixed plate and the sliding plate. The arrangement of the two piston rods can improve the stability of the sliding plate during movement and avoid the problem of tilting on both sides of the sliding plate.

[0013] As a further description of the above technical solution: the outer surface of the return spring is wrapped with a waterproof film, which can effectively delay the rust problem of the return spring, thereby helping to extend the service life of the return spring.

[0014] The utility model has the following beneficial effects:

[0015] The 3D printer nozzle designed by the utility model turns on the electromagnet and energizes the electromagnet, so that the electromagnet drives the sliding plate to be adsorbed on the bottom of the fixed plate. During this process, the protective part, the movable part and the wiping cotton move upward to expose the nozzle body and rub it, so that the dust on the nozzle body can be wiped, which makes it convenient to use the nozzle body. When the nozzle body is no longer needed, the nozzle body and the electromagnet are turned off. At this time, the sliding plate slides vertically downward due to its own weight. At this time, the wiping cotton can cover the nozzle body for protection again, and in the process of the wiping cotton descending, the wiping cotton will rub against the surface of the nozzle body, so that the dust adhered to the nozzle body when in use can be wiped, which can help reduce the interference of dust on the nozzle body, thereby helping to ensure the use effect of the nozzle body.

[0016] The 3D printer nozzle designed by the utility model is provided with a reset spring. Since the bottom of the nozzle body is wide at the top and narrow at the bottom, when the wiping cotton slides upward, the movable part can compress the reset spring and move close to the protective part, thereby avoiding the problem of interference in the movement of the movable part and ensuring the normal operation of the nozzle. Through the cooperation of the heat sink and the heat dissipation hole, the heat generated by the nozzle body can be quickly absorbed and dissipated, which helps to extend the service life of the nozzle and improve the performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the nozzle body and the movable part separated from each other in the utility model;

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the external whole of the utility model;

[0019] Figure 3 For this utility model Figure 1 Enlarged view of point A in the middle.

[0020] Legend:

[0021] 1. Nozzle body; 2. Connecting column; 3. Piston rod; 4. Sliding plate; 5. Electromagnet; 6. Protective part; 7. Movable part; 8. Wiping cotton; 9. Reset spring; 10. Heat sink; 11. Heat dissipation hole; 12. External thread; 13. Fixed plate. DETAILED DESCRIPTION

[0022] Reference Figure 1-3The utility model provides a 3D printer nozzle: it includes a nozzle body 1, a connecting column 2 is fixedly installed on the top of the nozzle body 1, a fixing plate 13 is fixedly sleeved on the connecting column 2, a piston rod 3 is arranged at the bottom of the fixing plate 13, a sliding plate 4 is arranged at the telescopic end of the piston rod 3, an electromagnet 5 is arranged on the top of the sliding plate 4, the fixing plate 13 is made of iron, and the fixing plate 13 and the electromagnet 5 are magnetically connected, two protective parts 6 are symmetrically arranged at the bottom of the sliding plate 4, and movable parts 7 are arranged on the opposite sides of the two protective parts 6. A wiping cotton 8 is arranged on one side of the movable part 7, and the wiping cotton 8 is against the nozzle body 1. The outer surface of the connecting column 2 is provided with an external thread 12, and the external thread 12 is used to match the internal thread hole adapted on the printer.

[0023] In the specific implementation, firstly, an internal threaded hole is opened in advance at a suitable position of the printer, and then the connecting column 2 is screwed into the internal threaded hole to install the nozzle. Then, when the nozzle is not needed, the protective member 6, the movable member 7 and the wiping cotton 8 are in a state of wrapping the nozzle body 1. When the nozzle is needed, the electromagnet 5 is turned on and energized. Since the material of the fixed disk 13 is iron and the fixed disk 13 is fixed, the electromagnet 5 will drive the sliding disk 4 to move toward the fixed disk 13 and adsorb on the bottom of the fixed disk 13. In this process, the protective member 6, the movable member 7 and the wiping cotton 8 move upward to expose the nozzle body 1. And rub the nozzle body 1 so that the dust on the nozzle body 1 can be wiped off, and the nozzle body 1 can be used conveniently. When the nozzle body 1 is no longer needed, the nozzle body 1 and the electromagnet 5 are closed. At this time, the sliding plate 4 slides vertically downward due to its own weight until the piston rod 3 is extended and retracted to the maximum. At this time, the wiping cotton 8 can cover and protect the nozzle body 1 again. In addition, in the process of the wiping cotton 8 descending, the wiping cotton 8 will also rub against the surface of the nozzle body 1, so that the dust adhered to the nozzle body 1 during use can be wiped off, which can help reduce the interference of dust on the nozzle body 1, thereby helping to ensure the use effect of the nozzle body 1.

[0024] As a further implementation of the above technical solution: the number of electromagnets 5 is four, and the four electromagnets 5 are symmetrically arranged on both sides of the top of the sliding plate 4. The arrangement of multiple electromagnets 5 can ensure that the adsorption force is increased when the electromagnets 5 are turned on, thereby ensuring that the sliding plate 4 can be normally adsorbed with the fixed plate 13.

[0025] As a further implementation of the above technical solution: a return spring 9 is provided on the opposite side of the two protective members 6, and the other end of the return spring 9 is fixedly connected to the movable member 7. By providing the return spring 9, since the bottom of the nozzle body 1 is wide at the top and narrow at the bottom, when the wiping cotton 8 slides upward, the movable member 7 can compress the return spring 9 and move closer to the protective member 6, thereby avoiding the problem of movement interference of the movable member 7 and ensuring the normal operation of the nozzle.

[0026] As a further implementation of the above technical solution: a heat sink 10 is provided on the opposite side of the two movable parts 7, and a plurality of heat dissipation holes 11 are provided on the protective part 6. The heat sink 10 is made of copper. Since copper has a strong heat absorption capacity, it can quickly absorb the heat generated by the nozzle body 1, and then quickly dissipate it with the heat dissipation holes 11, which helps to extend the service life of the nozzle and improve the performance.

[0027] As a further implementation of the above technical solution: the number of piston rods 3 is two, and the two piston rods 3 are symmetrically arranged between the fixed plate 13 and the sliding plate 4. The arrangement of the two piston rods 3 can improve the stability of the sliding plate 4 during movement and avoid the problem of tilting of both sides of the sliding plate 4.

[0028] As a further implementation of the above technical solution: the outer surface of the reset spring 9 is wrapped with a waterproof film, which can effectively delay the corrosion of the reset spring 9, thereby helping to extend the service life of the reset spring 9.

[0029] Working principle:

[0030] When using the utility model, firstly, an internal threaded hole is opened in advance at a suitable position of the printer, and then the connecting column 2 is screwed into the internal threaded hole thereof to install the nozzle. Then, when the nozzle is not needed, the protective member 6, the movable member 7 and the wiping cotton 8 are in a state of wrapping the nozzle body 1. When the nozzle is needed, the electromagnet 5 is turned on and energized. Since the material of the fixed disk 13 is iron and the fixed disk 13 is fixedly arranged, the electromagnet 5 will drive the sliding disk 4 to move toward the fixed disk 13 and be adsorbed on the bottom of the fixed disk 13. During this process, the protective member 6, the movable member 7 and the wiping cotton 8 move upward to expose the nozzle body 1 and rub the nozzle body When the nozzle body 1 is no longer needed, the nozzle body 1 and the electromagnet 5 are closed. At this time, the sliding plate 4 slides vertically downward due to its own weight until the piston rod 3 is extended and retracted to the maximum. At this time, the wiping cotton 8 can cover and protect the nozzle body 1 again. In addition, during the descent of the wiping cotton 8, the wiping cotton 8 will also rub against the surface of the nozzle body 1, so that the dust adhered to the nozzle body 1 during use can be wiped off, which can help reduce the interference of dust on the nozzle body 1, thereby helping to ensure the use effect of the nozzle body 1.

[0031] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A 3D printer nozzle, comprising a nozzle body (1), characterized in that: A connecting column (2) is fixedly mounted on the top of the nozzle body (1), a fixed disk (13) is fixedly sleeved on the connecting column (2), a piston rod (3) is arranged at the bottom of the fixed disk (13), a sliding disk (4) is arranged at the telescopic end of the piston rod (3), an electromagnet (5) is arranged at the top of the sliding disk (4), the fixing disk (13) is made of iron, and the fixing disk (13) and the electromagnet (5) are magnetically connected, two protective parts (6) are symmetrically arranged at the bottom of the sliding disk (4), and movable parts (7) are arranged on opposite sides of the two protective parts (6), and a wiping cotton (8) is arranged on one side of the movable part (7), and the wiping cotton (8) is against the nozzle body (1).

2. A 3D printer nozzle according to claim 1, characterized in that: The number of the electromagnets (5) is four, and the four electromagnets (5) are symmetrically arranged on both sides of the top of the sliding plate (4).

3. A 3D printer nozzle according to claim 1, characterized in that: A return spring (9) is provided on one opposite side of the two protective members (6), and the other end of the return spring (9) is fixedly connected to the movable member (7).

4. A 3D printer nozzle according to claim 1, characterized in that: A heat sink (10) is provided on one side opposite to the two movable parts (7), and a plurality of heat dissipation holes (11) are provided on the protective part (6).

5. A 3D printer nozzle according to claim 4, characterized in that: The heat sink (10) is made of copper.

6. A 3D printer nozzle according to claim 1, characterized in that: The outer surface of the connecting column (2) is provided with an external thread (12), and the external thread (12) is used to match the internal thread hole adapted on the printer.

7. A 3D printer nozzle according to claim 1, characterized in that: The number of the piston rods (3) is two, and the two piston rods (3) are symmetrically arranged between the fixed plate (13) and the sliding plate (4).

8. A 3D printer nozzle according to claim 3, characterized in that: The outer surface of the return spring (9) is wrapped with a waterproof film.

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