3D printing nozzle device capable of rapidly changing materials based on Weisenberg effect

Abstract

The utility model provides a 3D printing spray head device capable of rapidly changing materials based on the Weisenberg effect. The 3D printing spray head device comprises a mounting seat, a micro sliding table module, a rotating motor, a rotating motor fixing plate, a coupler, a micro needle, a centering baffle ring, a needle cylinder fixing rubber ring, an upper needle cylinder fixing plate, a disposable needle cylinder, a lower needle cylinder fixing plate, a dispensing needle head and a pin. According to the 3D printing nozzle, the traditional structure of the 3D printing nozzle based on the Weisenberg effect is improved, electric adjustment of the height of the microneedle is achieved, and therefore the printing efficiency and precision are improved. And through the use of the disposable needle cylinder, ink of different materials can be efficiently switched, and meanwhile, the manufacturing cost of the spray head is greatly reduced. In addition, a centering baffle ring is additionally arranged at the top of the microneedle, and a two-end supporting structure is formed, so that the centering performance of the microneedle is enhanced, the reverse flow of the solution is effectively prevented, and the stability of ink pumping is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of 3D printing equipment, and in particular relates to a 3D printing nozzle device capable of rapid material replacement based on the Weissenberg effect. Background Art

[0002] In the field of aircraft engines and gas turbines, core components such as turbine blades and aircraft bearings often operate in harsh environments of high temperature and high pressure, which are prone to failures such as fatigue and wear. Therefore, online monitoring of the surface temperature of the above components is of great significance to the intelligent development of aircraft engines and gas turbines. Traditional discrete sensors are difficult to meet the needs of non-destructive in-situ temperature monitoring of components due to their large size and the need to dig holes for installation.

[0003] Thin-film sensors usually use a coating process to deposit thin films with a thickness of several nanometers to tens of microns directly on the structure to be measured, which has the advantages of no disturbance, fast response speed, small size and in-situ measurement. The existing magnetron sputtering process faces challenges such as difficulty in preparing masks, insufficient uniformity of coating thickness and limited chamber size when depositing thin films on complex curved surfaces.

[0004] The print head device based on the Weissenberg effect can realize the reliable transportation of high-viscosity ink and has been applied to the preparation of high-temperature thin-film sensors. It has the advantages of low cost, high efficiency and the ability to deposit functional thin films on curved surfaces without masks. However, the existing 3D print head device based on the Weissenberg effect has problems such as high cost, low efficiency and difficulty in realizing fast multi-material printing. Summary of the invention

[0005] In view of the above technical problems, the utility model provides a 3D printing nozzle device capable of rapid material change based on the Weissenberg effect, aiming to overcome the above problems in the prior art.

[0006] In order to solve the above technical problems, the technical solution of the utility model is as follows:

[0007] A 3D printing nozzle device capable of rapid material replacement based on the Weissenberg effect, the 3D printing nozzle device having a mounting plate 1 arranged in a vertical direction, a micro slide module 2 vertically arranged on the mounting plate 1, a rotating motor fixing plate 4 arranged on the micro slide module 2, and the micro slide module 2 being used to drive the rotating motor fixing plate 4 to move up and down;

[0008] A rotating motor 3 is fixed on the rotating motor fixing plate 4, and the output shaft of the rotating motor 3 is connected to the microneedle 6. Under the action of the micro slide module 2, the rotating motor 3 drives the microneedle 6 to move up and down when moving up and down;

[0009] Below the micro slide module 2, an upper syringe fixing plate 9 and a lower syringe fixing plate 11 are sequentially arranged above and below the mounting plate 1;

[0010] The disposable syringe 10 is fixed on the upper syringe fixing plate 9 and the lower syringe fixing plate 11;

[0011] The lower end of the disposable syringe 10 is connected to the dispensing needle 12.

[0012] The microneedle 6 passes through the dispensing needle 12 , and the lower end of the microneedle 6 is located at the lower port of the dispensing needle 12 .

[0013] Further,

[0014] The output shaft of the rotary motor 3 is connected to the microneedle 6 via a coupling 5 .

[0015] Further,

[0016] The coupling 5 is a rigid coupling.

[0017] Further,

[0018] The upper part of the disposable syringe 10 is fixed to the upper syringe fixing plate 9 by sleeve-engaging with the syringe fixing rubber ring 8, and the syringe fixing rubber ring 8 is fixed to the upper syringe fixing plate 9 by screws. The lower part of the disposable syringe 10 is fixed to the lower syringe fixing plate 11 by screws.

[0019] Further,

[0020] A centering retaining ring 7 is fixed to the inner side of the upper end of the disposable syringe 10. The centering retaining ring 7 is located above the syringe fixing rubber ring 8. A through hole is provided in the center of the centering retaining ring 7. The microneedle 6 passes through the through hole, and the through hole forms a clearance fit with the microneedle 6.

[0021] Further,

[0022] The micro slide module 2 includes a frame fixed on the mounting plate 1 and a transmission linear motor or an axial linear motor or a pneumatic slide arranged on the frame. The transmission linear motor or the axial linear motor or the pneumatic slide drives the rotating motor fixing plate 4 to move up and down.

[0023] Further,

[0024] The two ends of the coupling 5 are connected to the output shaft of the rotary motor 3 and the upper end of the microneedle 6 through the pins 13 .

[0025] The purpose of the utility model is to develop a printing nozzle device with quickly replaceable ink and good direct writing uniformity, which has the following advantages: 1. This patent improves the traditional structure of the traditional 3D printing nozzle device that integrates the printing microneedle and the direct writing platform, so that the direct writing microneedle can be electrically adjusted in height to improve the printing accuracy; 2. This patent can realize the rapid replacement of disposable cavities and achieve the effect of rapid ink change, which greatly reduces the cost of preparing the cavity and significantly improves the direct writing efficiency; 3. This patent adds a centering baffle ring and improves it to a double-end support, which improves the centering of the microneedle and can also block the upward flow of liquid, making the printing more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0027] Figure 2 It is a top view of the utility model;

[0028] Figure 3 For this utility model Figure 2 AA section view in;

[0029] Figure 4 For this utility model Figure 3 A magnified view of part A in FIG.

[0030] Figure 5 For this utility model Figure 3 A magnified view of part B in FIG.

[0031] In the figure, there are mounting plate 1, micro slide module 2, rotating motor 3, rotating motor fixing plate 4, coupling 5, micro needle 6, centering retaining ring 7, syringe fixing rubber ring 8, upper syringe fixing plate 9, disposable syringe 10, lower syringe fixing plate 11, dispensing needle 12, and pin 13. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0033] In the description of the present invention, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0036] According to the above analysis, there are three main disadvantages of the existing technology:

[0037] Disadvantage 1: The existing printing nozzle device cavity based on the Weissenberg effect needs to be cleaned after use and it is difficult to quickly replace different functional inks.

[0038] Disadvantage 2: The length of the microneedle extending out of the dispensing needle of the existing printing nozzle device based on the Weissenberg effect is manually adjusted, with limited accuracy and low efficiency.

[0039] Disadvantage 3: The microneedle of the existing printing nozzle device based on the Weissenberg effect is fixed at one end. During direct writing, the end of the microneedle is prone to swing, affecting the uniformity of the printing line width.

[0040] Based on this, the present application discloses a 3D printing nozzle device with fast material change based on Weissenberg effect, including a mounting seat 1, a micro slide module 2 (linear stepper motor, including a fixed frame), a rotary motor 3, a rotary motor fixing plate 4, a coupling 5, a micro needle 6, a centering retaining ring 7, a syringe fixing rubber ring 8 (for preventing a disposable syringe 10 from loosening), an upper syringe fixing plate 9, a disposable syringe 10, a lower syringe fixing plate 11, a dispensing needle 12, and a pin 13. Through a series of fixing modules, the direct writing device is stably fixed on the slide of the linear stepper motor to realize the movement of the direct writing micro needle in the vertical direction.

[0041] Specifically, Figure 1 , 2 As shown, the 3D printing nozzle device of the present application has a mounting plate 1 arranged in a vertical direction, and the mounting plate 1 is used to fix the entire 3D printing nozzle device.

[0042] A micro slide module 2 is vertically arranged on the mounting plate 1 , and a rotary motor fixing plate 4 is arranged on the micro slide module 2 . The micro slide module 2 drives the rotary motor fixing plate 4 to move up and down.

[0043] A rotating motor 3 is fixed on the rotating motor fixing plate 4, and the output shaft of the rotating motor 3 is connected to the microneedle 6 through a coupling 5. Under the action of the micro slide module 2, the rotating motor 3 drives the microneedle 6 to move up and down when it moves up and down.

[0044] Below the micro slide module 2 , an upper syringe fixing plate 9 and a lower syringe fixing plate 11 are sequentially arranged above and below the mounting plate 1 .

[0045] The upper part of the disposable syringe 10 is fixed to the upper syringe fixing plate 9 by sleeve-engaging with the syringe fixing rubber ring 8, and the syringe fixing rubber ring 8 is fixed to the upper syringe fixing plate 9 by screws. The lower part of the disposable syringe 10 is fixed to the lower syringe fixing plate 11 by screws.

[0046] The lower end of the disposable syringe 10 is connected to the dispensing needle 12 , and a centering retaining ring 7 is fixed on the inner side of the upper end. The centering retaining ring 7 is located above the syringe fixing rubber ring 8 , and a through hole is provided in the center of the centering retaining ring 7 .

[0047] like Figure 4 , 5 As shown, the microneedle 6 passes through the through hole and the dispensing needle 12, and the lower end of the microneedle 6 is located at the lower end of the dispensing needle 12, and the through hole and the microneedle 6 form a clearance fit.

[0048] like Figure 1 As shown, the micro-slide module 2 includes a frame fixed on the mounting plate 1, a screw arranged on the frame and a motor driving the screw to rotate, and a thread corresponding to the screw is arranged on the rotating motor fixing plate 4, and the rotating motor fixing plate 4 can be driven to move up and down when the motor rotates; or the micro-slide module 2 may include a frame fixed on the mounting plate 1 and a linear stepping motor.

[0049] like Figure 3 As shown, the two ends of the coupling 5 are connected to the output shaft of the rotating motor 3 and the upper end of the microneedle 6 through a pin 13.

[0050] The motor used in the micro slide module of this patent to adjust the height of the microneedle can also be a traditional transmission linear motor, an axial linear motor, a pneumatic slide, etc.

[0051] 1. This patent improves the traditional structure of the traditional 3D printing nozzle device that integrates the printing microneedle with the direct writing platform, so that the direct writing microneedle can be electrically adjusted in height to improve the printing accuracy.

[0052] 2. This patent can realize the rapid replacement of disposable cavities and achieve the effect of rapid ink change, which greatly reduces the cost of preparing cavities and significantly improves direct writing efficiency.

[0053] 3. This patent adds a centering baffle ring and improves it to a double-end support, which improves the centering of the microneedle and can block the upward flow of liquid, making printing more stable.

[0054] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is 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 printing nozzle device capable of rapid material replacement based on the Weissenberg effect, characterized in that: The 3D printing nozzle device comprises a mounting plate (1) arranged in a vertical direction, a micro slide module (2) is vertically arranged on the mounting plate (1), a rotating motor fixing plate (4) is arranged on the micro slide module (2), and the micro slide module (2) is used to drive the rotating motor fixing plate (4) to move up and down; A rotating motor (3) is fixed on the rotating motor fixing plate (4), and the output shaft of the rotating motor (3) is connected to the microneedle (6). Under the action of the micro-slide module (2), the rotating motor (3) drives the microneedle (6) to move up and down when it moves up and down; Below the micro slide module (2), an upper syringe fixing plate (9) and a lower syringe fixing plate (11) are sequentially arranged above and below the mounting plate (1); The disposable syringe (10) is fixed on the upper syringe fixing plate (9) and the lower syringe fixing plate (11); The lower end of the disposable syringe (10) is connected to the glue dispensing needle (12). The microneedle (6) passes through the glue dispensing needle (12), and the lower end of the microneedle (6) is located at the lower port of the glue dispensing needle (12).

2. According to claim 1, a 3D printing nozzle device with rapid material replacement based on the Weissenberg effect is characterized in that: The output shaft of the rotating motor (3) is connected to the microneedle (6) via a coupling (5).

3. According to claim 2, a 3D printing nozzle device with rapid material replacement based on the Weissenberg effect is characterized in that: The coupling (5) is a rigid coupling.

4. According to claim 3, a 3D printing nozzle device with rapid material replacement based on Weissenberg effect is characterized in that: The upper part of the disposable syringe (10) is fixed to the upper syringe fixing plate (9) by sleeve-engaging with the syringe fixing rubber ring (8), the syringe fixing rubber ring (8) is fixed to the upper syringe fixing plate (9) by screws, and the lower part of the disposable syringe (10) is fixed to the lower syringe fixing plate (11) by screws.

5. According to claim 4, a 3D printing nozzle device with rapid material replacement based on Weissenberg effect is characterized in that: A centering retaining ring (7) is fixed on the inner side of the upper end of the disposable syringe (10), and the centering retaining ring (7) is located above the syringe fixing rubber ring (8). A through hole is provided at the center of the centering retaining ring (7), and the microneedle (6) passes through the through hole, and the through hole forms a clearance fit with the microneedle (6).

6. A 3D printing nozzle device capable of rapid material replacement based on the Weissenberg effect according to claim 5, characterized in that: The micro slide module (2) comprises a frame fixed on the mounting plate (1) and a transmission linear motor or an axial linear motor or a pneumatic slide arranged on the frame, wherein the transmission linear motor or the axial linear motor or the pneumatic slide drives the rotating motor fixing plate (4) to move up and down.

7. A 3D printing nozzle device capable of rapid material replacement based on the Weissenberg effect according to claim 6, characterized in that: The two ends of the coupling (5) are connected to the output shaft of the rotating motor (3) and the upper end of the microneedle (6) through pins (13).

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