A liquid level regulating device for light-cured resin

Abstract

The utility model provides a kind of photopolymerization resin liquid level leveling device, it is related to 3D printing equipment technical field, including upper support frame, middle support frame and lower base, the tail portion of upper support frame and middle support frame tail portion rotationally connected, the lower portion of middle support frame is provided with lower base, the middle portion of middle support frame is rotationally connected with middle threaded rod, the middle portion of middle support frame is slidably connected with middle sliding block, the both sides of middle sliding block are rotationally connected with upper support rod, the tail portion of lower base is rotationally connected with lower connecting rotary stand, the lower end of side threaded support column and the top of lower base are rotationally connected, side threaded support column and side connecting rotary stand middle portion are threadedly connected. By upper support frame and middle support frame, photopolymerization resin liquid level left and right, front and back double-dimension inclination angle adjustment can be realized, adjustment is convenient and fast, solve the leveling of the existing resin liquid level more through the mode of increasing gasket, layer by layer adding gasket leads to the problem of more troublesome adjustment.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing equipment technology, and in particular to a device for leveling the liquid surface of photocurable resin. Background Technology

[0002] Photopolymer resin 3D printing is an additive manufacturing technology based on photopolymerization reaction. It uses light of a specific wavelength (ultraviolet light, visible light, etc.) to irradiate photosensitive resin, causing the resin to rapidly crosslink and solidify from a liquid state to a solid state, and then build a three-dimensional solid model by layering.

[0003] 3D printers using UV LCD screens irradiate resin from below, causing it to solidify on a liftable molding platform. The platform then rises continuously, layering the resin. The unsolidified resin is in a liquid state, and the level of the resin surface is crucial. If the resin surface is tilted, it will no longer be parallel to the molding platform, causing changes in the adhesion between the resin and the platform. This can lead to the resin model easily detaching after molding. Current methods for leveling the resin surface often involve adding shims, which is cumbersome due to the layering of shims. Summary of the Invention

[0004] This invention provides a leveling device for the surface of photocurable resin. The upper support frame and the middle support frame can adjust the tilt angle of the photocurable resin surface in two dimensions: left and right, and front and back. The adjustment is convenient and quick, ensuring that the surface of the photocurable resin is kept in a horizontal state. This ensures that the surface of the photocurable resin and the printing platform remain parallel, avoiding the problem of insufficient adhesion between the printing platform and the resin caused by the tilt of the liquid surface.

[0005] This utility model provides a leveling device for a light-curing resin liquid level, specifically including: an upper support frame, a middle support frame and a lower base. The tail of the upper support frame and the tail of the middle support frame are rotatably connected. The lower base is provided below the middle support frame. The upper support frame, the middle support frame and the lower base are all rectangular plate structures. An extension bracket is slidably connected to the head of the upper support frame, and a side tightening screw is screwed to the side of the head of the upper support frame.

[0006] Furthermore, a central threaded rod is rotatably connected to the central support frame, and a central slider is horizontally slidably connected to the central support frame. Upper support rods are rotatably connected to both sides of the central slider.

[0007] Furthermore, the central threaded rod and the central slider are threadedly connected, and the upper end of the upper support rod is rotatably connected to the bottom of the upper support frame. When the central threaded rod rotates, it drives the central slider to move horizontally along the central support frame through the thread. The central slider drives the upper support rods on both sides to deflect around the rotation node, and the upper support rods support and adjust the tilt angle of the upper support frame.

[0008] Furthermore, the lower base is rotatably connected to a lower connecting frame at its tail end, the lower end of the side threaded support column is rotatably connected to the top of the lower base, and the side threaded support column and the side connecting frame are threadedly connected in the middle.

[0009] Furthermore, the side connecting frame is slidably connected to the sliding grooves on both sides and the lower connecting frame, and the lower connecting frame is slidably connected to the middle support frame.

[0010] Furthermore, the lower connecting slide and the lower connecting rotating frame are symmetrically slidably connected to both sides of the middle support frame. The lower connecting slide and the lower connecting rotating frame slide in the lower guide grooves opened on the left and right sides of the middle support frame along its length direction, and slide along the middle support frame to the corresponding center position of the printer.

[0011] Furthermore, when the side tightening screw and the expansion bracket are in tight contact, the expansion bracket is in a fixed state. When the side tightening screw is screwed out of the sliding groove and disengaged from the expansion bracket, the expansion bracket can slide back and forth along the sliding groove of the upper support frame.

[0012] This utility model provides a device for leveling the liquid level of light-curable resin, which has the following beneficial effects: The upper and middle support frames allow for dual-dimensional tilt angle adjustment of the UV-curing resin surface, both horizontally and vertically. This adjustment is convenient and quick, ensuring the UV-curing resin surface remains horizontal and parallel to the printing platform. This avoids the problem of insufficient adhesion between the printing platform and the resin caused by the tilted surface, effectively preventing defects such as detachment and delamination of printed parts during the molding process.

[0013] The movable extension bracket adapts to 3D printing equipment of different sizes, greatly improving the device's versatility for different models and specifications of photopolymer printers. The lower connecting carriage and the lower connecting rotating carriage slide along the middle support frame to the corresponding center position of the printer, improving the stability of the support and avoiding device shaking caused by the offset of the support point. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0015] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0016] In the attached diagram: Figure 1 A schematic diagram of the overall structure of this application is shown; Figure 2 A schematic diagram of the upper support frame structure of this application is shown; Figure 3A schematic diagram of the support frame structure in this application is shown; Figure 4 A schematic diagram of the lower base structure of this application is shown; Figure 5 A schematic diagram of the lower connecting carriage of this application is shown; Figure 6 This diagram shows the structure of the upper support frame, middle support frame, and lower base in their separated states according to this application. Figure label: 1. Upper support frame; 101. Extension bracket; 102. Side tightening screw; 2. Middle support frame; 201. Middle threaded rod; 202. Middle slider; 203. Upper support rod; 3. Lower base; 301. Lower connecting frame; 302. Side threaded support column; 303. Side connecting frame; 304. Lower connecting slide. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0018] Example 1: Please refer to Figures 1 to 6 : This utility model proposes a leveling device for a photocurable resin liquid surface, comprising: an upper support frame 1, a middle support frame 2, and a lower base 3. All three components are rectangular plate structures. An extension bracket 101 is slidably connected to the head of the upper support frame 1, and a side-tightening screw 102 is screwed to the side of the head of the upper support frame 1. The tail of the upper support frame 1 is rotatably connected to the tail of the middle support frame 2. A central threaded rod 201 is rotatably connected to the middle of the middle support frame 2, and the middle of the middle support frame 2 slides horizontally. A middle slider 202 is connected, and upper support rods 203 are rotatably connected to both sides of the middle slider 202. A lower base 3 is provided below the middle support frame 2, and a lower connecting frame 301 is rotatably connected to the tail of the lower base 3. The lower end of the side threaded support column 302 is rotatably connected to the top of the lower base 3. The side threaded support column 302 and the side connecting frame 303 are threadedly connected in the middle. The sliding grooves on both sides of the side connecting frame 303 are slidably connected to the lower connecting slide 304. The lower connecting slide 304 is slidably connected to the middle support frame 2.

[0019] In this embodiment, the central threaded rod 201 and the central slider 202 are threadedly connected, and the upper end of the upper support rod 203 is rotatably connected to the bottom of the upper support frame 1. When the central threaded rod 201 rotates, it drives the central slider 202 to move horizontally along the central support frame 2 through the thread. The central slider 202 drives the upper support rods 203 on both sides to deflect around the rotation node. The upper support rods 203 support and adjust the tilt angle of the upper support frame 1 to achieve horizontal calibration of the light-curing resin liquid surface.

[0020] In this embodiment, the lower connecting slide 304 and the lower connecting rotating frame 301 are symmetrically slidably connected on both sides of the middle support frame 2. The lower connecting slide 304 and the lower connecting rotating frame 301 slide in the lower guide grooves opened on the left and right sides of the middle support frame 2 along its length direction. The lower connecting slide 304 and the lower connecting rotating frame 301 slide along the middle support frame 2 to the corresponding center position of the printer. The center support improves the stability of the support.

[0021] In this embodiment, when the side tightening screw 102 and the expansion bracket 101 are in tight contact, the expansion bracket 101 is in a fixed state. When the side tightening screw 102 is screwed out of the sliding groove and disengaged from the expansion bracket 101, the expansion bracket 101 can slide back and forth along the sliding groove of the upper support frame 1 to adjust the overall length of the upper support frame 1 and improve the versatility for different models and specifications of light curing printers.

[0022] In this second embodiment, based on the first embodiment, a level is provided on both sides of the upper support frame 1. The level extends in the front-to-back direction and is used to detect the front-to-back levelness of the upper support frame 1. A level is provided on both sides of the middle support frame 2. The level extends in the left-to-right direction and is used to detect the left-to-right levelness of the middle support frame 2. The level can be seen intuitively through the level, thus realizing the auxiliary leveling of the light-curing resin liquid surface.

[0023] The working principle of this embodiment is as follows: The photopolymer 3D printer is placed on the top of the upper support frame 1. The vertical surface of the extension bracket 101 is attached to the side of the upper support frame 1. The extension bracket 101 of the upper support frame 1 is adjustable and can be fixed by the side tightening screw 102. The movement and expansion of the extension bracket 101 can adapt to 3D printing equipment of different sizes, breaking through the limitation of the traditional leveling device of "single size adaptation". It greatly improves the universality of the device for different models and specifications of photopolymer printers, and reduces the cost for users to purchase leveling devices separately for different equipment. The lower connecting slide 304 and the lower connecting rotating frame 301 slide along the middle support frame 2 to the center position corresponding to the printer, improving the stability of the support and avoiding the shaking of the device caused by the offset of the support point. It further improves the overall stability and load-bearing reliability of the device, and is especially suitable for long-term use scenarios of heavy resin tanks such as large-capacity industrial photopolymer printers. The middle support frame 2 drives the middle slider 202 to move via the central threaded rod 201. The middle slider 202 drives the upper support rod 203 to support and adjust the left and right tilt angles of the upper support frame 1. The side threaded support column 302 of the lower base 3, in conjunction with the sliding and rotation of the side connecting rotating frame 303 and the lower connecting slide 304, can simultaneously adjust the front and back tilt angles of the middle support frame 2. Through the upper support frame 1 and the middle support frame 2, the tilt angles of the photocurable resin liquid surface can be adjusted in both left and right and front and back dimensions. The adjustment is convenient and quick, ensuring that the photocurable resin liquid surface is kept in a horizontal state and that the photocurable resin liquid surface and the printing platform remain parallel, avoiding the problem of "insufficient adhesion between the printing platform and the resin" caused by the liquid surface tilt. This device effectively prevents defects such as detachment and delamination of printed parts during the molding process, significantly improving the molding quality and stability of photopolymer printing. In photopolymer printing, the adhesion between the resin surface and the molding platform directly determines the initial adhesion of the printed parts. This device ensures that the liquid surface and the platform are closely parallel and in close contact through leveling in the front-back and left-right directions. This ensures that the platform and resin form a uniform initial contact pressure, avoiding "weak adhesion areas" caused by excessive local contact gaps or uneven pressure. It is especially suitable for large-size, high-precision photopolymer printing scenarios such as industrial-grade parts printing and dental model printing, providing stable adhesion guarantee for the entire process of printing from "initial molding to complete curing" and reducing the printing failure rate.

[0024] The following points should be noted in this article: 1. The accompanying drawings of the embodiments disclosed herein only involve structures relevant to the embodiments disclosed herein; other structures may refer to general designs.

[0025] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0026] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A device for leveling the liquid level of a photocurable resin, comprising: The upper support frame (1), the middle support frame (2) and the lower base (3) are characterized in that the tail of the upper support frame (1) and the tail of the middle support frame (2) are rotatably connected, the lower base (3) is provided below the middle support frame (2), the middle threaded rod (201) is rotatably connected to the middle of the middle support frame (2), the middle slider (202) is slidably connected to the middle of the middle support frame (2), and the upper support rod (203) is rotatably connected to both sides of the middle slider (202).

2. The photocurable resin liquid leveling device according to claim 1, characterized in that, The upper support frame (1) is slidably connected to an extension bracket (101) at its head, and a side tightening screw (102) is screwed onto the side of the upper support frame (1).

3. The photocurable resin liquid leveling device according to claim 1, characterized in that, The central threaded rod (201) and the central slider (202) are threadedly connected, and the upper end of the upper support rod (203) is rotatably connected to the bottom of the upper support frame (1).

4. The photocurable resin liquid leveling device according to claim 1, characterized in that, The lower base (3) is rotatably connected to a lower connecting frame (301) at its tail end. The lower end of the side threaded support column (302) is rotatably connected to the top of the lower base (3). The side threaded support column (302) and the side connecting frame (303) are threadedly connected in the middle.

5. The photocurable resin liquid leveling device according to claim 4, characterized in that, The side connecting frame (303) is slidably connected to the two sides of the lower connecting slide (304), and the lower connecting slide (304) is slidably connected to the middle support frame (2).

6. The photocurable resin liquid leveling device according to claim 5, characterized in that, The lower connecting slide (304) and the lower connecting rotating frame (301) are symmetrically slidably connected on both sides of the middle support frame (2).

7. The photocurable resin liquid leveling device according to claim 2, characterized in that, When the side tightening screw (102) and the expansion bracket (101) are in tight contact, the expansion bracket (101) is in a fixed state.

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