Self-checking device for a flexible electronic 3D printing apparatus

Abstract

The application provides a self-checking device of a flexible electronic 3D printing device, relates to the technical field of balance detection, and comprises a self-checking device body and a printing nozzle. The self-checking device body comprises a printing platform, a guide rail, a balance detection module and a driving mechanism. The surface of the printing platform is provided with an arc-shaped groove. The guide rail is welded on the top of the printing platform, and a self-checking interlayer is arranged in the middle of the guide rail. The self-checking interlayer is arranged above the arc-shaped groove. The surface of the guide rail is provided with the balance detection module. The balance detection module is moved along the guide rail by moving the nozzle. The movement stability of the nozzle is detected by the detection box at the rear end in the moving process. The structure can eliminate the interference of the nozzle on the detection result when the nozzle moves along a straight line, improve the accuracy and reliability of the detection, and detect the material spraying uniformity of the nozzle and realize efficient repeated detection.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of balance detection, in particular to a self-checking device for a flexible electronic 3D printing device. BACKGROUND

[0002] A small deviation in the moving track of the nozzle in the flexible electronic 3D printing device will cause misalignment between layers or uneven material accumulation, directly affecting the dimensional tolerance of the printed part, and the nozzle moving speed and extrusion rate need to be dynamically matched. If the movement is unstable, it will cause the molten material to flow or be extruded in excess, resulting in cavities or nodule defects. When printing overhanging structures or hollow grids (such as biomedical stents), nozzle jitter will cause support point deviation, resulting in a 3-4 times higher risk of cross-layer collapse, so the self-checking device needs to be built to regularly detect and process the moving stability of the nozzle part.

[0003] In the prior art, the moving balance detection process of the nozzle part in the flexible electronic 3D printing device will adopt a vibration sensor component directly mounted on the nozzle, but this scheme will interfere with the moving state of the vibration sensor due to the nozzle part being always in a high-speed moving state, resulting in low detection accuracy and easy errors. On the other hand, when the nozzle shakes with a high frequency during movement, the conventional detection scheme cannot obtain the vibration deviation direction, so the detection result is not accurate enough. SUMMARY

[0004] To solve the problems in the background art, the present application provides a self-checking device for a flexible electronic 3D printing device, which can detect the moving stability of the nozzle by moving the nozzle control balance detection module along the guide rail and detecting the nozzle by the rear detection box during movement. This structure can eliminate the interference of the nozzle moving along a straight line on the detection result, improve the accuracy and reliability of the detection, and also can detect the material uniformity of the nozzle and realize efficient repeated detection.

[0005] In order to achieve the above object, the application is realized by the following technical scheme: a self-checking device of a flexible electronic 3D printing device, comprising a self-checking device body and a printing nozzle, the self-checking device body comprises a printing platform, a guide rail, a balance detection module and a driving mechanism, the surface of the printing platform is provided with an arc-shaped groove, the guide rail is welded on the top of the printing platform, and a self-checking interlayer is provided in the middle of the guide rail, the self-checking interlayer is provided above the arc-shaped groove, the surface of the guide rail is provided with the balance detection module, the rear end of the balance detection module is integrally formed with a detection box, the inside of the detection box is provided with a detection cavity, the bottom of the printing platform is provided with the driving mechanism, the driving mechanism passes through the inside of the arc-shaped groove, the printing nozzle is installed above the printing platform, and the printing nozzle is controlled and driven by the shaft moving system of the printer to be connected with the top of the balance detection module, and the bottom of the printing nozzle is aligned with the middle position of the arc-shaped groove.

[0006] Further, the guide rail comprises a front baffle, a rear end plate and a supporting plate, the outer side of the front baffle is integrally formed with an extension plate, the surface of the extension plate is embedded with a first magnetic plate, the surface of the front baffle is provided with a strip-shaped hole, and the surface of the supporting plate is embedded with a light source and a fixed partition plate.

[0007] Further, the number of the light sources is two, each light source is in a strip-shaped structure, and the two light sources are installed on the two sides of the fixed partition plate, and the supporting plate is integrally formed at the top end of the rear end plate.

[0008] Further, the front baffle and the rear end plate are welded on the surface of the printing platform, the self-checking interlayer is provided between the front baffle and the rear end plate, the surface of the supporting plate is flush with the top of the front baffle, and the first magnetic plate is arranged at one end of the extension plate.

[0009] Further, the balance detection module comprises a detection box, a transmission frame and a limiting plate, the detection box is integrally formed at the rear end of the transmission frame, the top of the transmission frame is welded with a positioning plate, the middle of the positioning plate is provided with a positioning hole, the two sides of the positioning plate are attached with third magnetic plates, the inside of the detection box is embedded with a movable partition plate, the two ends of the movable partition plate are integrally formed with surrounding plates, and the top end of the inner wall of the detection box is embedded with a photosensitive module.

[0010] Further, the top of the printing nozzle is screwed with a pressing plate, the side edge of the pressing plate is attached with a fourth magnetic plate, the printing nozzle is used to pass through the inside of the positioning hole, the pressing plate is used to be attached with the surface of the positioning plate, and the fourth magnetic plate is used to be attached with the third magnetic plate.

[0011] Further, the front end bottom of the transmission frame is welded with a limiting plate, the bottom of the limiting plate is attached with a second magnetic plate, the second magnetic plate is used for being attached to the first magnetic plate, a telescopic sleeve is screwed on the surface of the limiting plate, a spring rod is inserted in the telescopic sleeve, and a roller is installed at the tail end of the spring rod.

[0012] Further, the bottom of the transmission frame passes through the inside of the strip-shaped hole, an industrial camera is screwed at the bottom end of the transmission frame, the limiting plate is pressed on the surface of the extension plate through the second magnetic plate at the bottom, and the roller is abutted against the surface of the front baffle through the spring rod.

[0013] Further, the driving mechanism comprises a motor and a receiving column, the motor is screwed at the end of the printing platform, the receiving column is connected with the output shaft part of the motor through a shaft coupling, and a notch is formed in the bottom of the arc-shaped groove.

[0014] Further, a scraping strip is attached on the inner wall of the arc-shaped groove, the bottom of the scraping strip is aligned with the edge of the notch, the top of the scraping strip is abutted against the surface of the receiving column, and the printing head sprays the printing material to the surface of the receiving column.

[0015] The beneficial effects of the present application are as follows:

[0016] 1. The self-checking equipment of the flexible electronic 3D printing device moves the balance detection module along the guide rail by moving the nozzle, and detects the movement stability of the nozzle through the detection box at the rear end in the moving process. The structure can eliminate the interference of the nozzle on the detection result when moving along a straight line, and improves the accuracy and reliability of the detection.

[0017] 2. The self-checking equipment of the flexible electronic 3D printing device controls the nozzle to spray materials at a uniform speed during the straight-line movement of the nozzle in the guide rail, and cooperates with the rear-end vision system to collect the continuity and uniformity of the bottom sprayed materials. With the scheme, more intuitive stability test results are obtained, and the detection purpose of the material spraying uniformity of the nozzle is achieved.

[0018] 3. The self-checking equipment of the flexible electronic 3D printing device controls the receiving column receiving the sprayed materials to rotate through the driving mechanism, so that the sprayed materials can be quickly rotated and scraped after each movement detection is completed, so as to realize an efficient repeated detection process. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is an outline structural schematic view of the self-checking equipment of the flexible electronic 3D printing device.

[0020] Figure 2Structure diagram of the guiding track part of the present application;

[0021] Figure 3 Structure diagram of the driving mechanism part of the present application;

[0022] Figure 4 Structure diagram of the balance detection module part of the present application;

[0023] Figure 5 Split diagram of the detection box part of the present application;

[0024] Figure 6 Structure diagram of the printing nozzle part of the present application;

[0025] Figure 7 Structure diagram of the limiting plate part of the present application;

[0026] In the figure: 1, printing platform; 2, guiding track; 3, balance detection module; 4, driving mechanism; 5, front baffle; 6, rear end plate; 7, supporting plate; 8, self-checking interlayer; 9, light source; 10, fixed partition; 11, extension plate; 12, strip-shaped hole; 13, first magnetic attraction plate; 14, motor; 15, bearing column; 16, arc-shaped groove; 17, notch; 18, scraping strip; 19, detection box; 20, transmission frame; 21, industrial camera; 22, positioning plate; 23, positioning hole; 24, third magnetic attraction plate; 25, limiting plate; 26, telescopic sleeve; 27, second magnetic attraction plate; 28, photosensitive module; 29, movable partition; 30, coaming; 31, detection cavity; 32, printing nozzle; 33, pressing plate; 34, fourth magnetic attraction plate; 35, spring rod; 36, roller; 37, supporting frame. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, purposes and effects realized by the present application easy to understand, the present application is further described below in combination with specific embodiments.

[0028] Please refer to Figures 1 to 7The application provides the following technical scheme: a self-checking device of a flexible electronic 3D printing device, comprising a self-checking device body and a printing nozzle 32, the self-checking device body comprises a printing platform 1, a guide rail 2, a balance detection module 3 and a driving mechanism 4, an arc-shaped groove 16 is formed in the surface of the printing platform 1, the guide rail 2 is welded at the top of the printing platform 1, and a self-checking interlayer 8 is formed in the middle of the guide rail 2, the self-checking interlayer 8 is formed above the arc-shaped groove 16, the balance detection module 3 is installed on the surface of the guide rail 2, a detection box 19 is integrally formed at the rear end of the balance detection module 3, a detection cavity 31 is formed in the inside of the detection box 19, the driving mechanism 4 is installed at the bottom of the printing platform 1 and passes through the inside of the arc-shaped groove 16, the printing nozzle 32 is installed above the printing platform 1, and the printing nozzle 32 is controlled to be driven to be connected with the top of the balance detection module 3 through the shaft moving system of the printer, and the bottom of the printing nozzle 32 is aligned with the middle position of the arc-shaped groove 16. The self-checking device is built on the printing platform 1 in the 3D printer, and the stability of the printing nozzle 32 during translation is detected.

[0029] When the application is used, the guide rail 2 is installed on the surface of the printing platform 1, in the process of printing, when the printing nozzle 32 needs to be self-checked, the printing nozzle 32 is moved to the top of the guide rail 2 through the shaft moving system of the printer, and then the printing nozzle 32 is moved downward until the printing nozzle 32 is connected with the balance detection module 3, at this time, the printing nozzle 32 can be controlled to move along the guide rail 2, and whether the printing nozzle 32 moves longitudinally during movement is detected through the photosensitive module 28 in the inside of the detection box 19 at the rear end. At the same time, the printing material is sprayed downward from the bottom of the printing nozzle 32 during the movement of the printing nozzle 32, the printing material forms a point linear state on the receiving column 15, and the distribution of the sprayed material is identified and detected by means of the industrial camera 21, so that the stability of the printing nozzle 32 during movement and the continuity of material spraying are further obtained.

[0030] The guiding rail 2 comprises a front baffle 5, a rear end plate 6 and a supporting plate 7. The outer side of the front baffle 5 is integrally formed with an extension plate 11. The surface of the extension plate 11 is embedded with a first magnetic plate 13. The surface of the front baffle 5 is provided with a strip-shaped hole 12. The surface of the supporting plate 7 is embedded with a light source 9 and a fixed partition plate 10. The number of the light source 9 is two. Each light source 9 is in a strip-shaped structure. Two light sources 9 are respectively installed on the two sides of the fixed partition plate 10. The supporting plate 7 is integrally formed at the top end of the rear end plate 6. The front baffle 5 and the rear end plate 6 are welded on the surface of the printing platform 1. The self-checking interlayer 8 is arranged between the front baffle 5 and the rear end plate 6. The surface of the supporting plate 7 is flush with the top of the front baffle 5. The first magnetic plate 13 is arranged at one end of the extension plate 11. During the process of controlling the straight-line movement of the nozzle in the guiding rail 2, the nozzle sprays the material at a uniform speed. Combined with the rear visual system, the continuity and uniformity of the bottom sprayed material can be collected. The scheme can obtain more intuitive stability test results. The detection purpose of the material spraying uniformity of the nozzle is achieved.

[0031] Specifically, after the printing nozzle 32 is lowered, it is first embedded into the inside of the balance detection module 3. The movement of the printing nozzle 32 drives the balance detection module 3 to move synchronously. During the process, the bottom of the printing nozzle 32 is always aligned with the lower receiving column 15. Therefore, the printing nozzle 32 can continuously spray the material to the surface of the receiving column 15. The distribution of the bottom sprayed material is collected by the industrial camera 21 to achieve the purpose of whether the movement and spraying process of the printing nozzle 32 is stable.

[0032] The balance detection module 3 includes a detection box 19, a transmission frame 20 and a limiting plate 25, the detection box 19 is integrally formed at the rear end of the transmission frame 20, the top of the transmission frame 20 is welded with a positioning plate 22, the middle of the positioning plate 22 is provided with a positioning hole 23, the two sides of the positioning plate 22 are attached with third magnetic plates 24, the inside of the detection box 19 is embedded with a movable partition plate 29, both ends of the movable partition plate 29 are integrally formed with a coaming 30, and the top end of the inner wall of the detection box 19 is embedded with a photosensitive module 28. The top of the printing nozzle 32 is screwed with a pressing plate 33, the side of the pressing plate 33 is attached with a fourth magnetic plate 34, the printing nozzle 32 is used to pass through the inside of the positioning hole 23, the pressing plate 33 is used to be attached with the surface of the positioning plate 22, and the fourth magnetic plate 34 is used to be attached with the third magnetic plate 24. The front end of the transmission frame 20 is welded with a limiting plate 25 at the bottom, the bottom of the limiting plate 25 is attached with a second magnetic plate 27, the second magnetic plate 27 is used to be attached with the first magnetic plate 13, the surface of the limiting plate 25 is screwed with a telescopic sleeve 26, the inside of the telescopic sleeve 26 is inserted with a spring rod 35, and the end of the spring rod 35 is installed with a roller 36. The bottom of the transmission frame 20 passes through the inside of the strip-shaped hole 12, the bottom end of the transmission frame 20 is screwed with an industrial camera 21, the limiting plate 25 is pressed on the surface of the extension plate 11 through the second magnetic plate 27 at the bottom, and the roller 36 is abutted against the surface of the front baffle 5 through the spring rod 35. The balance detection module 3 moves along the guide rail 2 by moving the nozzle, and the detection box 19 at the rear end is used to detect the movement stability of the nozzle during movement, which can eliminate the interference of the nozzle moving along a straight line on the detection result, and improve the accuracy and reliability of the detection.

[0033] Specifically, in the initial state, the balance detection module 3 is at the end of the extension plate 11 and is adsorbed and attached by the second magnetic adsorption plate 27 and the first magnetic adsorption plate 13 at the bottom, that is, the initial position of the entire balance detection module 3 can be positioned and processed, and after the print head 32 is moved downward, the print head 32 is embedded into the inside of the positioning hole 23, and when the print head 32 is controlled to translate, the print head 32 can push the positioning plate 22 to move the entire balance detection module 3 along the guide rail 2. During the process, if the print head 32 always moves stably, the movable partition plate 29 inside the transmission bin is always aligned with the fixed partition plate 10 at the bottom, so the two light sources 9 parts always directly irradiate into the detection cavity 31, and the bottom photosensitive module 28 detects it. When the print head 32 is not balanced enough and shakes, it can drive the detection bin at the back end of the transmission frame 20 to translate, at this time the movable partition plate 29 deviates to one side and blocks one of the light sources 9, so that the photosensitive module 28 part receives the change of the light source 9 signal, thereby judging that the print head 32 shakes during the movement process, and according to the signal change frequency and degree of the two photosensitive modules 28, the direction of the print head 32 deviation can be judged. The spring rod 35 always pushes the roller 36 against the front baffle 5 during the movement process, and cooperates with the adsorption effect between the third magnetic adsorption plate 24 and the fourth magnetic adsorption plate 34 to ensure that the entire balance detection module 3 does not rotate.

[0034] In the embodiment, the driving mechanism 4 includes a motor 14 and a receiving column 15. The motor 14 is screwed at the end of the printing platform 1, and the receiving column 15 is connected with the output shaft part of the motor 14 through a shaft coupling. The bottom of the arc-shaped groove 16 is provided with a notch 17. A scraping strip 18 is attached to the inner wall of the arc-shaped groove 16. The bottom of the scraping strip 18 is aligned with the edge of the notch 17, and the top of the scraping strip 18 abuts against the surface of the receiving column 15. The printing head 32 sprays printing materials to the surface of the receiving column 15. The receiving column 15 at the bottom receives the sprayed materials and rotates under the control of the driving mechanism 4. Therefore, after each movement for detection, the sprayed materials can be quickly rotated and scraped off, so as to realize an efficient repeated detection process.

[0035] Specifically, the materials sprayed by the printing head 32 are received by the receiving column 15 at the inner side, and the printing head 32 moves along the self-checking interlayer 8 from one end to the other end to complete a single detection. After completing a single detection, the motor 14 is started to drive the receiving column 15 to rotate, so that the sprayed materials on the receiving column 15 are scraped off by the scraping strip 18 at the bottom. The printing head 32 is controlled to move again to repeat the above spraying and detection process.

[0036] The foregoing merely illustrates the principles of the application and various embodiments are now described with reference to the drawings. This application is not limited to the embodiments described but is intended to encompass any and all changes and modifications within the spirit and scope of the underlying principles thereof. Thus, to those skilled in the art, it will be apparent from this disclosure that various modifications and changes can be made in the implementation without departing from the true spirit and scope of the application.

[0037] In addition, it should be understood that although the description herein is made on the basis of the embodiments, not every embodiment contains only one independent technical solution, and the description herein is made only for the sake of clarity, and those skilled in the art should understand the description as a whole, and the technical solutions in each embodiment can also be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. A self-checking device for a flexible electronic 3D printing apparatus, comprising a self-checking device body and a printing nozzle (32), characterized in that: The self-checking device body comprises a printing platform (1), a guide rail (2), a balance detection module (3) and a driving mechanism (4), the surface of the printing platform (1) is provided with an arc-shaped groove (16), the guide rail (2) is welded on the top of the printing platform (1), and a self-checking interlayer (8) is formed in the middle of the guide rail (2), the self-checking interlayer (8) is arranged above the arc-shaped groove (16), the balance detection module (3) is mounted on the surface of the guide rail (2), the rear end of the balance detection module (3) is integrally formed with a detection box (19), the inside of the detection box (19) is provided with a detection cavity (31), the bottom of the printing platform (1) is provided with the driving mechanism (4), the driving mechanism (4) passes through the inside of the arc-shaped groove (16), the printing nozzle (32) is arranged above the printing platform (1), and the printing nozzle (32) is connected with the top of the balance detection module (3) through the shaft moving system of the printer, and the bottom of the printing nozzle (32) is aligned with the middle position of the arc-shaped groove (16), the balance detection module (3) comprises the detection box (19), a transmission frame (20) and a limiting plate (25), the rear end of the detection box (19) is integrally formed with the transmission frame (20), the top of the transmission frame (20) is welded with the limiting plate (22), the middle of the limiting plate (22) is provided with a positioning hole (23), the two sides of the limiting plate (22) are attached with third magnetic plates (24), the inside of the detection box (19) is embedded with a movable partition plate (29), the two ends of the movable partition plate (29) are integrally formed with a surrounding plate (30), the top end of the inner wall of the detection box (19) is embedded with a photosensitive module (28), the top of the printing nozzle (32) is screwed with a pressing plate (33), the side of the pressing plate (33) is attached with a fourth magnetic plate (34), the printing nozzle (32) passes through the inside of the positioning hole (23), the pressing plate (33) is attached with the surface of the limiting plate (22), and the fourth magnetic plate (34) is attached with the third magnetic plate (24). 2.The self-checking device of a flexible electronic 3D printing apparatus according to claim 1, wherein: The guide rail (2) comprises a front baffle (5), a rear end plate (6) and a supporting plate (7), the outer side of the front baffle (5) is integrally formed with an extension plate (11), the surface of the extension plate (11) is embedded with a first magnetic plate (13), the surface of the front baffle (5) is provided with a strip-shaped hole (12), and the surface of the supporting plate (7) is embedded with a light source (9) and a fixed partition plate (10). 3.The self-checking device of a flexible electronic 3D printing apparatus according to claim 2, wherein: The number of the light source (9) is two, each light source (9) is in a strip-shaped structure, and the two light sources (9) are arranged on the two sides of the fixed partition plate (10), and the supporting plate (7) is integrally formed on the top end of the rear end plate (6). 4.The self-checking device of a flexible electronic 3D printing apparatus according to claim 2, wherein: The front baffle (5) and the rear end plate (6) are welded on the surface of the printing platform (1), the self-checking interlayer (8) is opened between the front baffle (5) and the rear end plate (6), the surface of the supporting plate (7) is flush with the top of the front baffle (5), and the first magnetic plate (13) is arranged at one end of the extension plate (11). 5.The self-checking device of a flexible electronic 3D printing apparatus according to claim 1, wherein: The bottom of the front end of the transmission frame (20) is welded with a limiting plate (25), the bottom of the limiting plate (25) is attached with a second magnetic plate (27), the second magnetic plate (27) is used for being attached to the first magnetic plate (13), the surface of the limiting plate (25) is screwed with a telescopic sleeve (26), the telescopic sleeve (26) is internally inserted with a spring rod (35), and the tail end of the spring rod (35) is installed with a roller (36). 6.The self-checking device of a flexible electronic 3D printing apparatus according to claim 5, wherein: The bottom of the transmission frame (20) passes through the inside of the strip-shaped hole (12), the bottom end of the transmission frame (20) is screwed with an industrial camera (21), the limiting plate (25) is pressed on the surface of the extension plate (11) through the second magnetic plate (27) at the bottom, and the roller (36) is abutted against the surface of the front baffle (5) through the spring rod (35). 7.The self-checking device of a flexible electronic 3D printing apparatus according to claim 1, wherein: The driving mechanism (4) comprises a motor (14) and a receiving column (15), the motor (14) is screwed at the end of the printing platform (1), the receiving column (15) is connected with the output shaft part of the motor (14) through a shaft coupling, and the bottom of the arc-shaped groove (16) is provided with a notch (17). 8.The self-checking device of a flexible electronic 3D printing apparatus according to claim 7, wherein: The inner wall of the arc-shaped groove (16) is attached with a scraping strip (18), the bottom of the scraping strip (18) is aligned with the edge of the notch (17), the top of the scraping strip (18) is abutted against the surface of the receiving column (15), and the printing head (32) sprays the printing material to the surface of the receiving column (15).

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