An inkjet 3D printing apparatus

Abstract

The utility model discloses a kind of inkjet 3D printing equipment, including printing platform, nozzle cleaning assembly, lifting module, forming platform, powder laying assembly, longitudinal beam, crossbeam and printing assembly;Forming platform is connected with the upper portion of lifting module;Longitudinal beam is installed on printing platform, crossbeam and powder laying assembly are slidably connected with longitudinal beam and initial position is located at the both ends of longitudinal beam, and printing assembly is slidably connected with crossbeam;Nozzle cleaning assembly is located at the side of printing platform;Powder laying assembly includes powder bin, vibration motor, powder laying roller, upper driving motor, powder falling plate, direct vibration motor, feeding shaft and lower driving motor;Vibration motor is connected with powder bin, feeding shaft is located just below the discharge port of powder bin, and upper driving motor is connected with feeding shaft;Powder falling plate is located below feeding shaft, and direct vibration motor is connected with powder falling plate;Powder laying roller is located at the lower portion of powder bin, and lower driving motor is connected with powder laying roller.The equipment can clean residual binder and dust on nozzle, and improve printing quality.

Description

Technical Field

[0001] This utility model belongs to the field of printing equipment technology, specifically an inkjet 3D printing device. Background Technology

[0002] Inkjet 3D printing technology uses digital models as a basis, and obtains a shaped model by spraying binder layer by layer to bond and solidify powder. This technology has been widely used in industries such as sand casting, mechanical structure processing, and biopharmaceuticals, demonstrating great potential and advantages.

[0003] During the printing process, the printhead sprays adhesive. If residual adhesive is not cleaned promptly, it can easily cause blockages, leading to a decrease in print quality. The printing process also generates a significant amount of dust, and prolonged exposure of the printhead to a high-dust environment can also cause blockages. To address this problem, this invention proposes an inkjet 3D printing device. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the technical problem to be solved by this utility model is to provide an inkjet 3D printing device.

[0005] The present invention solves the aforementioned technical problem by adopting the following technical solution:

[0006] An inkjet 3D printing device, characterized in that it includes a printing platform, a nozzle cleaning assembly, a lifting module, a forming platform, a powder spreading assembly, longitudinal beams, cross beams, and a printing assembly;

[0007] The lifting module is installed below the printing platform, and the forming platform is connected to the upper part of the lifting module; the longitudinal beam is installed on the printing platform, and the crossbeam and powder spreading component are slidably connected to the longitudinal beam and are initially located at both ends of the longitudinal beam; the printing component is slidably connected to the crossbeam; the nozzle cleaning component is located on one side of the printing platform.

[0008] The powder spreading assembly includes a powder hopper, a vibrating motor, powder spreading rollers, an upper drive motor, a powder dropping plate, a linear vibrating motor, a feeding shaft, and a lower drive motor. The vibrating motor is connected to the powder hopper, the feeding shaft is located directly below the outlet of the powder hopper, and the upper drive motor is connected to the feeding shaft. The powder dropping plate is located below the feeding shaft, and the linear vibrating motor is connected to the powder dropping plate. The powder spreading rollers are located at the bottom of the powder hopper, and the lower drive motor is connected to the powder spreading rollers.

[0009] Furthermore, the nozzle cleaning assembly includes a lifting base, an ultrasonic vibrator, and a water tank; the fixed end of the lifting base is connected to the printing platform, and the movable end of the lifting base is connected to the water tank; the ultrasonic vibrator is connected to the water tank.

[0010] Furthermore, the device also includes a main powder recovery chamber and a secondary powder recovery chamber; the main powder recovery chamber and the secondary powder recovery chamber are installed on the printing platform and are located at both ends of the forming platform, respectively.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model is equipped with a printhead cleaning component. After the printing component completes the printing task of one layer, it returns to the initial position and uses the printhead cleaning component to automatically soak and clean the printhead to remove residual adhesive and dust, thereby solving the problem of printhead clogging and affecting printing effect, and improving printing quality.

[0013] 2. The structure of the powder spreading component is simpler. The powder first falls onto the powder dispensing plate, and then the powder is scattered onto the forming platform by the vibration of the powder dispensing plate. Then it is evenly spread by the powder spreading roller. This powder spreading structure is more suitable for small printing equipment. Attached Figure Description

[0014] Figure 1 This is an isometric view of the present invention;

[0015] Figure 2 This is a side view of the present invention;

[0016] Figure 3 This is a structural diagram of the powder spreading component of this utility model;

[0017] Figure 4 This is a structural diagram of the nozzle cleaning assembly of this utility model;

[0018] In the diagram: 1. Printing platform; 2. Nozzle cleaning assembly; 3. Lifting module; 4. Forming platform; 5. Powder spreading assembly; 6. Longitudinal beam; 7. Crossbeam; 8. Main powder recovery bin; 9. Secondary powder recovery bin; 10. Printing assembly;

[0019] 21. Lifting base; 22. Ultrasonic vibrator; 23. Water tank; 51. Powder silo; 52. Vibration motor; 53. Powder spreading roller; 54. Upper drive motor; 55. Powder dropping plate; 56. Straight vibration motor; 57. Powder detector; 58. Feeding shaft; 59. Lower drive motor. Detailed Implementation

[0020] Specific embodiments are given below with reference to the accompanying drawings. These specific embodiments are only used to further describe the technical solution of this utility model in detail, and are not intended to limit the scope of protection of this application.

[0021] This utility model provides an inkjet 3D printing device, including a printing platform 1, a nozzle cleaning assembly 2, a lifting module 3, a forming platform 4, a powder spreading assembly 5, a longitudinal beam 6, a cross beam 7, and a printing assembly 10.

[0022] The lifting module 3 is installed below the printing platform 1, and the forming platform 4 is connected to the upper part of the lifting module 3. The forming platform 4 is also embedded in the hollow area in the center of the printing platform 1. The lifting module 3 realizes the lifting and lowering of the forming platform 4, and the material deposition of the powder spreading component 5 completes the layer-by-layer printing. The longitudinal beam 6 is fixed on the printing platform 1, and the crossbeam 7 is connected to the longitudinal beam 6 and can move back and forth along the longitudinal beam 6. The powder spreading component 5 is connected to the longitudinal beam 6 and can move back and forth along the longitudinal beam 6. The printing component 10 is connected to the crossbeam 7 and can move back and forth along the crossbeam 7. The initial positions of the powder spreading component 5 and the printing component 10 are located at the two ends of the forming platform 4, and their movements are independent of each other, realizing non-interference collaborative operation of powder spreading and printing. The nozzle cleaning component 2 is located on one side of the printing platform 1 and below the printing component 10. When the printing component 10 returns to the initial position, the nozzle cleaning component 2 automatically cleans the nozzle of the printing component 10 to keep the nozzle surface clean and improve its working life and printing quality.

[0023] The powder spreading assembly 5 includes a powder hopper 51, a vibrating motor 52, a powder spreading roller 53, an upper drive motor 54, a powder dropping plate 55, a linear vibrating motor 56, a powder detector 57, a feeding shaft 58, and a lower drive motor 59. The powder hopper 51 has an inlet and outlet with automatically opening and closing sealing covers. The vibrating motor 52 and the powder detector 57 are fixed to the side wall of the powder hopper 51. The vibrating motor 52 drives the powder hopper 51 to vibrate for easy powder dropping, and the powder detector 57 is used to detect whether there is powder in the powder hopper 51. Powder; the feeding shaft 58 is located directly below the discharge port of the powder hopper 51, ensuring that the powder falls onto the feeding shaft 58. The upper drive motor 54 is connected to the feeding shaft 58, driving the feeding shaft 58 to rotate. The powder dropping plate 55 is located below the feeding shaft 58, and the direct vibration motor 56 is connected to the powder dropping plate 55, driving the powder dropping plate 55 to vibrate, causing the powder to fall onto the forming platform 4. The powder spreading roller 53 is located at the lower part of the powder hopper 51, and the lower drive motor 59 is connected to the powder spreading roller 53, driving the powder spreading roller 53 to rotate to spread the powder. During the powder spreading process, the vibration motor 52 drives the powder hopper 51 to vibrate, causing the powder to fall. The feeding shaft 58 rotates, causing the powder to fall onto the powder dropping plate 55. The direct vibration motor 56 drives the powder dropping plate 55 to vibrate, causing the powder to fall onto the forming platform 4. The lower drive motor 59 drives the powder spreading roller 53 to rotate, evenly spreading the powder scattered on the forming platform 4.

[0024] The printhead cleaning assembly 2 includes a lifting base 21, an ultrasonic vibrator 22, and a water tank 23. The fixed end of the lifting base 21 is connected to the printing platform 1, and the moving end of the lifting base 21 is connected to the water tank 23. The lifting base 21 has a built-in lifting function, which enables the water tank 23 to be raised and lowered. The ultrasonic vibrator 22 is connected to the bottom of the water tank 23, which vibrates the water tank 23. In the working state, the water tank 23 contains a special cleaning solution for cleaning the printhead. The cleaning process is as follows: the printhead of the printing assembly 10 is moved directly above the water tank 23, and the lifting base 21 moves the water tank 23 upward until the printhead is completely immersed in the special cleaning solution. During the immersion process, the ultrasonic vibrator 22 is activated to vibrate the water tank 23. The cavitation effect formed by the high-frequency vibration further enhances the cleaning effect, effectively removing residual adhesive and dust from the printhead.

[0025] The device also includes a main powder recovery chamber 8 and a secondary powder recovery chamber 9. Both the main powder recovery chamber 8 and the secondary powder recovery chamber 9 are installed on the printing platform 1, located at both ends of the forming platform 4 respectively. The main powder recovery chamber 8 is located below the powder spreading component 5 and is used to recover the powder that falls off the forming platform 4 during the process of the powder spreading component 5 returning to its initial position. The secondary powder recovery chamber 9 is located below the printing component 10 and is used to recover the powder that falls off the forming platform 4 during the powder spreading process of the powder spreading component 5.

[0026] The powder spreading component 5, printing component 10, nozzle cleaning component 2, and lifting module 3 are characterized by independent operation. For example, when the powder spreading component 5 is in the powder adding state, the printing component 10 can still print, which improves work efficiency.

[0027] The working principle and process of this utility model are as follows:

[0028] Powder spreading: Start the lifting module 3 to raise and lower the forming platform 4 to the initial position; the powder spreading component 5 starts to work, the sealing cover of the powder hopper 51 outlet opens, the vibration motor 52 drives the powder hopper 51 to vibrate and make the powder fall, the feeding shaft 58 rotates to make the powder fall onto the powder dropping plate 55, the direct vibration motor 56 drives the powder dropping plate 55 to vibrate and make the powder fall onto the forming platform 4. At the same time, the powder spreading component 5 moves from left to right along the longitudinal beam 6, and the lower drive motor 59 drives the powder spreading roller 53 to rotate, thereby evenly spreading the powder that has fallen onto the forming platform 4; when one layer of powder is laid, the powder spreading component 5 returns to the initial position and waits to perform the next powder spreading task;

[0029] Printing: The printing assembly 10 starts working. The crossbeam 7 moves from right to left along the longitudinal beam 6 in a step-by-step manner, driving the printing assembly 10 to move from right to left. Each step width is the same as the effective spray width of the printhead. At the step width, the printing assembly 10 moves along the crossbeam 7. During this process, the printhead sprays adhesive, causing the powder to adhere and solidify. After printing one step width, the printing assembly 10 returns to its initial position on the crossbeam 7. Then, the crossbeam 7 drives the printing assembly 10 to move one step width, and the printing assembly 10 prints as the crossbeam 7 moves. This cycle continues until one layer of inkjet printing is completed. After this, the printing assembly 10 returns to its initial position under the action of the crossbeam 7.

[0030] Cleaning: The printhead cleaning assembly 2 starts working, the lifting base 21 moves to raise and lower the water tank 23 to a suitable position, so that the printhead is completely immersed in the special cleaning solution; the ultrasonic vibrator 22 is activated to vibrate the water tank 23 to remove the adhesive and dust on the surface of the printhead; after the printhead cleaning is completed, the printing assembly 10 waits to perform the next printing task.

[0031] Restart the lifting module 3 to drive the forming platform 4 to descend by one layer thickness; repeat the above process to print by layer-by-layer bonding.

[0032] Any aspects not covered in this utility model are applicable to the prior art.

Claims

1. An inkjet 3D printing device, characterized in that, Includes printing platform, printhead cleaning assembly, lifting module, forming platform, powder spreading assembly, longitudinal beams, cross beams, and printing assembly; The lifting module is installed below the printing platform, and the forming platform is connected to the upper part of the lifting module; the longitudinal beam is installed on the printing platform, and the crossbeam and powder spreading component are slidably connected to the longitudinal beam and are initially located at both ends of the longitudinal beam; the printing component is slidably connected to the crossbeam; the nozzle cleaning component is located on one side of the printing platform. The powder spreading assembly includes a powder hopper, a vibrating motor, powder spreading rollers, an upper drive motor, a powder dropping plate, a linear vibrating motor, a feeding shaft, and a lower drive motor. The vibrating motor is connected to the powder hopper, the feeding shaft is located directly below the outlet of the powder hopper, and the upper drive motor is connected to the feeding shaft. The powder dropping plate is located below the feeding shaft, and the linear vibrating motor is connected to the powder dropping plate. The powder spreading rollers are located at the bottom of the powder hopper, and the lower drive motor is connected to the powder spreading rollers.

2. The inkjet 3D printing equipment according to claim 1, characterized in that, The nozzle cleaning assembly includes a lifting base, an ultrasonic vibrator, and a water tank; the fixed end of the lifting base is connected to the printing platform, and the movable end of the lifting base is connected to the water tank; the ultrasonic vibrator is connected to the water tank.

3. The inkjet 3D printing equipment according to claim 1 or 2, characterized in that, The equipment also includes a main powder recovery chamber and a secondary powder recovery chamber; the main powder recovery chamber and the secondary powder recovery chamber are installed on the printing platform and are located at both ends of the forming platform, respectively.

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