A light-cured 3D printer for processing magnetic resins

Abstract

The application discloses a photocuring 3D printer for processing magnetic resin, and belongs to the technical field of 3D printing, which comprises a tray, a magnetic scraper coating mechanism is arranged on one side of the top of the tray, the magnetic scraper coating mechanism comprises a driving piece in transmission connection with the tray, a hollow scraper main body is in transmission connection with the driving piece, the scraper main body is located in the tray, a plurality of groups of permanent magnets are arranged in the scraper main body at equal intervals, a release film assembly is arranged in the tray, a digital light processing device is arranged below the tray, and a forming assembly is arranged on the side, away from the driving piece, of the top of the tray. The magnetic scraper coating mechanism is arranged to solve the leveling problem of high-viscosity magnetic resin in the printing process and the alignment problem of the magnetization direction; the scraper main body uniformly scrapes and levels the resin through movement, the waiting time for automatic leveling is saved, and therefore the printing speed is greatly improved; meanwhile, the height of the scraper main body can be adjusted, so that the thickness of the resin layer can be accurately controlled.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of 3D printing, and particularly relates to a photocuring 3D printer for processing magnetic resin. BACKGROUND

[0002] The existing printing equipment has certain limitations for the photocuring 3D printing scheme of high-viscosity magnetic resin. Due to the presence of magnetic particles, the viscosity of the resin is significantly increased, especially in elastic (such as rubber-like and silicone-like) resin, the increased viscosity will cause poor resin flowability, and it is difficult to uniformly coat on the release film. At the same time, the black magnetic particles (neodymium iron boron particles) doped in the photosensitive resin will absorb a large amount of ultraviolet light, resulting in a decrease in the penetration depth of light in the photocuring process, and it is difficult to effectively cure the resin in the deeper layer, thereby affecting the printing precision and interlayer adhesion. In addition, the interaction between high-viscosity resin and magnetic particles will also slow down the printing speed, and the inconsistent magnetic field distribution of the magnetic particles will cause local particle aggregation, which will increase the risk of separation between layers, thereby affecting the stability and quality of printing. Therefore, the existing equipment often faces problems such as low printing precision, slow printing speed, and weak interlayer adhesion when processing high-viscosity magnetic resin. SUMMARY

[0003] The purpose of the present application is to provide a photocuring 3D printer for processing magnetic resin to solve the problems existing in the prior art.

[0004] To achieve the above-mentioned purpose, the present application provides the following scheme: the present application provides a photocuring 3D printer for processing magnetic resin, which comprises a tray, a magnetic scraper coating mechanism is arranged on one side of the top of the tray, the magnetic scraper coating mechanism comprises a driving member in transmission connection with the tray, a hollow scraper main body is drivingly connected to the driving member, the scraper main body is located in the tray, a plurality of groups of permanent magnets are arranged in the scraper main body at equal intervals, a release film assembly is arranged in the tray, a digital light processing device is arranged below the tray, and a forming assembly is arranged on the side of the tray away from the driving member.

[0005] Preferably, the driving member comprises a first connecting rod and a second connecting rod rotatably connected to the scraper main body, respectively, a first connecting shaft is fixedly connected to one end of the first connecting rod away from the scraper main body, a second connecting shaft is fixedly connected to one end of the second connecting rod away from the scraper main body, the first connecting shaft and the second connecting shaft are respectively installed in the tray through bearings, a rudder is fixedly connected to the top surface of the first connecting rod, and the side of the tray close to the rudder is fixedly connected with the rudder.

[0006] Preferably, the permanent magnet is a sheet-shaped permanent magnet.

[0007] Preferably, the center of the tray is provided with a first through hole, the release film assembly comprises a release film clamp fixed to the bottom surface of the first through hole, and the release film clamp is provided with a release film.

[0008] Preferably, the digital light processing device is a digital light processing projector, and the digital light processing projector is located below the release film assembly.

[0009] Preferably, the forming assembly comprises a linear motion platform, and the linear motion platform is drivingly connected with a printing platform, and the printing platform is located above the tray.

[0010] The present application discloses the following technical effects: the magnetic scraper coating mechanism is equipped to solve the leveling problem of high-viscosity magnetic resin in the printing process and the alignment problem of the magnetization direction; the scraper body uniformly scrapes the resin through movement, which saves the waiting time of automatic leveling, thereby greatly improving the printing speed; at the same time, the height of the scraper body can be adjusted to accurately control the thickness of the resin layer, reduce the required amount of resin and reduce the interaction between the printed object and the resin. In addition, the scraper body is provided with multiple permanent magnets, which guide the alignment of the magnetic particles in the resin through the generation of a uniform magnetic field, thereby improving the printing precision and success rate. BRIEF DESCRIPTION OF DRAWINGS

[0011] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated in and constitute a part of this application. The embodiments of the present application illustrated in the drawings and their descriptions are used to explain the present application and are not intended to limit the present application. In the drawings:

[0012] Figure 1 A structural schematic view of a light-cured 3D printer for processing magnetic resin according to the present application;

[0013] Figure 2 A structural schematic view of a magnetic scraper coating mechanism according to the present application;

[0014] Figure 3 A schematic view of a permanent magnet arrangement according to the present application;

[0015] Figure 4 A structural schematic view of a scraper body movement trajectory according to the present application;

[0016] Figure 5 A magnetic field schematic view of a scraper body according to the present application;

[0017] Figure 6 A structural schematic view of a scraper body movement process according to the present application.

[0018] In the figure: 1, tray; 2, scraper main body; 3, permanent magnet; 4, first connecting rod; 5, second connecting rod; 6, first connecting shaft; 7, second connecting shaft; 8, steering wheel; 9, first through hole; 10, release film clamp; 11, release film; 12, digital light processing projector; 13, linear motion platform; 14, printing platform. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0020] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0021] Referring to Figures 1-6 As shown in the figure, the embodiment provides a photocuring 3D printer for processing magnetic resin, which comprises a tray 1, a magnetic scraper coating mechanism is arranged on one side of the top of the tray 1, the magnetic scraper coating mechanism comprises a driving member in transmission connection with the tray 1, a hollow scraper main body 2 is in transmission connection with the driving member, the scraper main body 2 is located in the tray 1, a plurality of groups of permanent magnets 3 are arranged in the scraper main body 2 at equal intervals, a release film assembly is arranged in the tray 1, a digital light processing device is arranged below the tray 1, and a forming assembly is arranged on the side of the tray 1 away from the driving member.

[0022] The magnetic scraper coating mechanism is provided to solve the problems of leveling and alignment of the magnetization direction of the high-viscosity magnetic resin during printing; the scraper main body 2 uniformly scrapes the resin through movement, which saves the waiting time of automatic leveling, thereby greatly improving the printing speed; at the same time, the height of the scraper main body 2 can be adjusted to accurately control the thickness of the resin layer, thereby reducing the amount of resin required and reducing the interaction between the printed object and the resin. In addition, the scraper main body 2 is provided with a plurality of groups of permanent magnets 3, which guide the alignment of the magnetic particles in the resin by generating a uniform magnetic field, thereby improving the printing precision and success rate.

[0023] Further optimization scheme, the driving member comprises a first connecting rod 4 and a second connecting rod 5 in rotational connection with the scraper main body 2 respectively, a first connecting shaft 6 is fixedly connected to one end of the first connecting rod 4 away from the scraper main body 2, a second connecting shaft 7 is fixedly connected to one end of the second connecting rod 5 away from the scraper main body 2, the first connecting shaft 6 and the second connecting shaft 7 are respectively installed in the tray 1 through bearings, a steering wheel 8 is fixedly connected to the top surface of the first connecting rod 4, and one side of the tray 1 close to the steering wheel 8 is fixedly connected with the steering wheel 8.

[0024] The height of the scraper body 2 can be fixed with the tray 1 and adjusted up and down by inserting the bearing hole on the tray 1. The scraper body 2 moves along a circular arc and is driven by a rudder 8 which is fixed with one side of the tray 1. By setting the driving part, the included angle between the scraper body 2 and the tray 1 remains unchanged during the movement.

[0025] Further optimization scheme, the permanent magnet 3 is a sheet-shaped permanent magnet.

[0026] Further optimization scheme, the center of the tray 1 is provided with a first through hole 9, and the release film assembly comprises a release film clamp 10 fixed on the bottom surface of the first through hole 9. The release film clamp 10 is provided with a release film 11, and the release film 11 is located in the first through hole 9.

[0027] The release film clamp 10 is composed of upper and lower two parts, and the release film 11 is clamped in the upper and lower two parts. The release film 11 is fixed by tightening the screw.

[0028] The release film clamp 10 and the tray 1 are respectively provided with screw holes, and the release film clamp 10 is fixed on the tray 1 by tightening the screw.

[0029] Further optimization scheme, the digital light processing device is a digital light processing projector 12, and the digital light processing projector 12 is located below the release film assembly.

[0030] Further optimization scheme, the forming assembly comprises a linear motion platform 13, and the linear motion platform 13 is drivingly connected with a printing platform 14, and the printing platform 14 is located above the tray 1.

[0031] In use, the release film 11 is fixed in the release film clamp 10, and then the release film clamp 10 is installed on the bottom surface of the tray 1. The scraper assembly is fixed on the tray 1 and the release film assembly, and the required scraping thickness is adjusted. The printing platform 14 is installed on the linear motion platform 13.

[0032] The magnetic scraper coating mechanism can be fixed with the tray 1 and adjusted in height up and down by inserting the bearing hole on the tray 1.

[0033] By setting the initial height of the linear motion platform 13, the starting position of the printing platform 14 is set on the surface of the release film 11 as the printing zero point.

[0034] In use, a suitable amount of high-viscosity magnetic photosensitive resin is added to the tray 1, and the scraper body 2 is moved to scrape the resin to a set scraping thickness, while the magnetic particles in the resin are aligned by the magnetic field on the surface of the scraper body 2. Specifically, the permanent magnet 3 embedded in the scraper body 2 generates a uniform magnetic field on the surface of the scraper, and the direction of the magnetic field is consistent with the direction of the scraper movement. During the scraping process, the magnetic field on the surface of the scraper acts on the magnetic particles in the photosensitive resin, causing the magnetic particles to align in the direction of the magnetic field under the guidance of the magnetic field. In addition, the movement of the scraper body 2 is driven by the first connecting rod 4, the second connecting rod 5 and the rudder 8, and the movement trajectory is stable and controllable, and the direction is always at a constant angle with the tray 1, ensuring that the resin layer is uniform in thickness at different positions and the alignment direction of the magnetic particles is consistent.

[0035] After scraping, the scraper body 2 returns to one side of the tray 1, the printing platform 14 is lowered to a set height, the digital light processing projector 12 is projected, and the magnetic photosensitive resin is cured on the printing platform 14, then the printing platform 14 is raised and separated from the release film 11, and continues to rise to a certain height to provide space for the movement of the scraper body 2, and the scraper body 2 performs scraping movement.

[0036] After scraping, the above process is repeated. The component is printed layer by layer on the printing platform 14.

[0037] In the description of the present application, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the present application.

[0038] The above-described embodiments are only preferred modes of the present application, and do not limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements to the technical solutions of the present application made by those skilled in the art shall fall within the protection scope of the present application.

Claims

1. A photocured 3D printer for processing magnetic resins, characterized by: The application discloses a material disc (1) provided with a magnetic scraper coating mechanism on one side of the top of the material disc (1), the magnetic scraper coating mechanism comprises a driving element in driving connection with the material disc (1), a hollow scraper main body (2) is in driving connection with the driving element, the scraper main body (2) is located in the material disc (1), a plurality of groups of permanent magnets (3) are arranged in the scraper main body (2) at equal intervals, a release film assembly is arranged in the material disc (1), a digital light processing device is arranged below the material disc (1), and a forming assembly is arranged on the side, away from the driving element, of the material disc (1) and above the material disc (1).

2. The photocured 3D printer for processing magnetic resin according to claim 1, characterized in that: The driving element comprises a first connecting rod (4) and a second connecting rod (5) in rotational connection with the scraper main body (2) respectively, a first connecting shaft (6) is fixedly connected to one end, away from the scraper main body (2), of the first connecting rod (4), a second connecting shaft (7) is fixedly connected to one end, away from the scraper main body (2), of the second connecting rod (5), the first connecting shaft (6) and the second connecting shaft (7) are arranged in the material disc (1) through bearings respectively, a rudder (8) is fixedly connected to the top surface of the first connecting rod (4), and one side of the material disc (1), close to the rudder (8), is fixedly connected with the rudder (8).

3. The photocured 3D printer for processing magnetic resin according to claim 1, characterized in that: The permanent magnets (3) are sheet-shaped permanent magnets.

4. The photocured 3D printer for processing magnetic resin according to claim 1, characterized in that: A first through hole (9) is arranged in the center of the material disc (1), a release film clamp (10) is fixedly connected to the bottom surface of the first through hole (9), a release film (11) is arranged in the release film clamp (10), and the release film (11) is located in the first through hole (9).

5. The photocured 3D printer for processing magnetic resin according to claim 1, characterized in that: The digital light processing device is a digital light processing projector (12), and the digital light processing projector (12) is located below the release film assembly.

6. The photocured 3D printer for processing magnetic resin according to claim 1, characterized in that: The forming assembly comprises a linear motion platform (13), the linear motion platform (13) is in driving connection with a printing platform (14), and the printing platform (14) is located above the material disc (1).

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