阅读说明：本技术 一种3d打印机喷头及3d打印机 (3D print head and 3D printer ) 是由 陈炫玮 黄斌 罗陆锋 于 2020-07-20 设计创作，主要内容包括：本发明提供了一种3D打印机喷头,包括喷头主体以及镜像设置于喷头主体两侧的风道,风道通过管道与散热风扇连接,散热风扇固定连接于喷头主体的外周上,风道的出风口指向喷头主体的下方,风道的内壁上设置有隔音结构,隔音结构包括第一吸音层和隔声层,第一吸音层包括凸起部和凹陷部,凹陷部贴附在隔声层上,凸起部与隔声层之间形成空气层,同时还提供相应的3D打印机。本发明通过使用风道设计,能够有效精准的对3D打印机喷头挤出的耗材进行控温,通过在风道中增加隔音结构,有效降低噪声,达到更好的隔音静音效果,而且通过使用平衡机构和负压腔的配合使用,能够更方便的完成具有斜度的结构,使得具有斜度的结构看起来更自然,从而减少打印时间。(The invention provides a 3D printer nozzle which comprises a nozzle main body and air channels arranged on two sides of the nozzle main body in a mirror image mode, wherein the air channels are connected with a radiating fan through pipelines, the radiating fan is fixedly connected to the periphery of the nozzle main body, an air outlet of the air channel points to the lower side of the nozzle main body, a sound insulation structure is arranged on the inner wall of the air channel and comprises a first sound absorption layer and a sound insulation layer, the first sound absorption layer comprises a protruding portion and a recessed portion, the recessed portion is attached to the sound insulation layer, an air layer is formed between the protruding portion and the sound insulation layer, and meanwhile a corresponding 3D printer is further provided. According to the invention, through the design of the air duct, the temperature of consumables extruded by the 3D printer nozzle can be effectively and accurately controlled, the noise is effectively reduced by adding the sound insulation structure in the air duct, a better sound insulation and silencing effect is achieved, and through the matched use of the balance mechanism and the negative pressure cavity, the structure with the inclination can be more conveniently completed, so that the structure with the inclination looks more natural, and the printing time is reduced.)

1. The utility model provides a 3D print head, its characterized in that, including shower nozzle main part and mirror image set up in the wind channel of shower nozzle main part both sides, the wind channel passes through the pipeline and is connected with radiator fan, radiator fan fixed connection in the periphery of shower nozzle main part, the air outlet in wind channel is directional the below of shower nozzle main part, be provided with sound-proof structure on the inner wall in wind channel, sound-proof structure includes first sound absorption layer and sound insulation layer, and first sound absorption layer includes bellying and depressed part, and the depressed part is attached on the sound insulation layer, forms the air bed between bellying and the sound insulation layer.

2. The 3D printer nozzle as claimed in claim 1, wherein a wind deflector for limiting wind volume is disposed on the wind outlet of the wind tunnel, and the wind deflector is rotatably connected to the edge of the wind outlet through a rotating structure disposed on the edge of the wind outlet.

3. The 3D printer head of claim 3, wherein the rotation mechanism is coupled to a motor.

4. A3D printer comprising a frame, a thermal bed assembly, a movement assembly, and the 3D printer head of any of claims 1-3, the thermal bed assembly disposed in the frame, the movement assembly fixedly connected in the frame, the 3D printer head slidably connected to the movement assembly; wherein the content of the first and second substances,

the hot bed assembly is configured for supporting the printing consumables and preventing the printing consumables from generating quality problems due to too fast temperature change;

the moving assembly is configured to drive the 3D printer nozzle to move along a horizontal interface;

the 3D printer head configured to print a printing consumable onto the thermal bed assembly.

5. The 3D printer according to claim 4, wherein the heat bed body has a negative pressure chamber therein, the upper surface of the heat bed body has a plurality of through holes, and the negative pressure chamber is communicated with the outside through the through holes.

6. The 3D printer according to claim 5, wherein the through holes comprise a peripheral through hole and a central through hole, the peripheral through hole is disposed on the outer periphery of the upper surface of the thermal bed main body, and the central through hole is disposed in the center of the upper surface of the thermal bed main body.

Technical Field

The invention relates to the field of 3D printing equipment, in particular to a 3D printer.

Background

At present, 3D printers are developed faster, and most common is a hot-melt type 3D printer, and the basic printing principle is to print each layer of section of a model layer by layer from bottom to top on a hot bed; before starting the model entity, a base surface is printed on the hot bed, and the shape of the base surface is generally as shown in fig. 1 and is formed by reciprocating lines; after the base surface is finished, the model entity can be printed above the base surface. In the printing process of the 3D printer, in order to ensure that the base surface and the hot bed have enough adhesive force and avoid the movement of the model, the hot bed always keeps higher temperature, generally about 110 ℃; however, in the actual printing process, the heat dissipation of the outer contour of the bottom of the model is obviously superior to the heat dissipation of the interior of the model, so the outer contour of the bottom of the model is easy to dry; when a printer nozzle continuously applies shearing force and pressure to the edge of the upper part of the model, the bottom of the model on the different side of the nozzle is easy to tilt upwards, namely a bottom curling effect is formed, and finally the model is dragged transversely, so that the printing cannot be continued; the current method for solving the problem is to stick adhesive tapes on the surface of the hot bed to enhance the friction force between the base surface and the hot bed, which obviously wastes time and labor and is very troublesome.

Meanwhile, the existing 3D printer is unreasonable in heat dissipation, the whole process cannot be well assisted by self-heating generated by the spray head, the overall structure is unreasonable in arrangement, and in the heat dissipation process, noise can be generated by using air cooling, so that the working environment is affected.

Disclosure of Invention

The invention provides a 3D printer nozzle and a 3D printer to solve the problems,

in order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a 3D print head, include shower nozzle main part and mirror image set up in the wind channel of shower nozzle main part both sides, the wind channel passes through the pipeline and is connected with radiator fan, radiator fan fixed connection in the periphery of shower nozzle main part, the air outlet in wind channel is directional the below of shower nozzle main part, be provided with sound-proof structure on the inner wall in wind channel, sound-proof structure includes first sound absorption layer and sound insulation layer, and first sound absorption layer includes bellying and depressed part, and the depressed part is attached on the sound insulation layer, forms the air bed between bellying and the sound insulation layer.

The 3D printer nozzle is optional, a wind shield for limiting the air quantity is arranged on an air outlet of the air channel, and the wind shield is connected with the edge of the air outlet in a rotating mode through a rotating structure arranged on the edge of the air outlet.

The 3D printer nozzle is optional, and the rotating mechanism is connected with the motor.

A 3D printer comprising a frame, a thermal bed assembly disposed in the frame, a movement assembly fixedly connected in the frame, and the 3D printer head of any of claims 1-3 slidably connected to the movement assembly; wherein the content of the first and second substances,

the hot bed assembly is configured for supporting the printing consumables and preventing the printing consumables from generating quality problems due to too fast temperature change;

the moving assembly is configured to drive the 3D printer nozzle to move along a horizontal interface;

the 3D printer head configured to print a printing consumable onto the thermal bed assembly.

The utility model provides a and 3D printer, optionally, it has the negative pressure chamber to open in the hot bed main part, it has a plurality of through-hole to open on the upper surface of hot bed main part, the negative pressure chamber passes through-hole and external intercommunication.

The utility model provides a and 3D printer, optionally, the through-hole includes peripheral through-hole and central through-hole, peripheral through-hole set up in the upper surface periphery of hot bed main part, central through-hole set up in the upper surface center of hot bed main part.

The beneficial technical effects obtained by the invention are as follows:

1. through using the design of wind channel, can be effective accurate right the consumptive material that 3D print head extruded is controlled the temperature.

2. Through increase sound-proof structure in the wind channel, effectively reduce the noise, reach better syllable-dividing silence effect.

3. By using the balance mechanism and the negative pressure chamber in cooperation, the structure having the inclination can be completed more conveniently, so that the structure having the inclination looks more natural, thereby reducing the printing time.

4. Through the cooperation of balance mechanism and negative pressure chamber is used, effectively solves the problem that the work piece sticks up the limit.

Drawings

The invention will be further understood from the following description in conjunction with the accompanying drawings. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the embodiments. Like reference numerals designate corresponding parts throughout the different views.

Fig. 1 is a schematic structural diagram of a 3D printer head according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an air duct according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a sound insulating structure according to one embodiment of the present invention;

FIG. 4 is a schematic structural view of a sound insulating structure according to one embodiment of the present invention;

FIG. 5 is an enlarged view of the structure at A in FIG. 4;

FIG. 6 is a schematic structural view of a sound insulating structure according to one embodiment of the present invention;

FIG. 7 is a schematic cross-sectional view taken along line B-B of FIG. 6;

FIG. 8 is a schematic structural diagram of a 3D printer according to one embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a 3D printer according to one embodiment of the present invention;

FIG. 10 is a schematic top view of a heat bed assembly according to one embodiment of the present invention;

FIG. 11 is a schematic view of the bottom surface of the hotbed assembly according to one embodiment of the present invention.

Description of reference numerals: 1. a frame; 2. a hot bed assembly; 21. a negative pressure chamber; 22. a central through hole; 23. a peripheral via; 24. a Z-direction moving mechanism; 25. a balance plate; 26. a tilt sensor; 27. a laser transmitter; 3. a mobile assembly; 31. an X-direction moving mechanism; 32. a first Y-direction moving mechanism; 33. a second Y-direction moving mechanism; 4. a 3D printer nozzle; 41. a nozzle body; 42. an air duct; 43. a first sound absorbing layer; 431. a boss portion; 432. a recessed portion; 44. a sound insulating layer; 45. an air layer; 46. a wind deflector.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to embodiments thereof;

the invention relates to a 3D printer nozzle and a 3D printer, which explain the following embodiments according to the description of the attached drawings: