3D printer based on photocuring additive manufacturing

Abstract

The utility model belongs to the technical field of 3D printing, and particularly relates to a 3D printer based on photocuring additive manufacturing, which comprises a machine body and a filtering mechanism, a resin tank is mounted on the machine body, the filtering mechanism is arranged in the resin tank, the filtering mechanism comprises a frame body slidably mounted on the resin tank, a filtering plate is mounted below the frame body, and the filtering plate is arranged on the frame body. And the filter plate is in sliding fit with the resin tank, through holes are formed in the two sides of the filter plate, and filter paper is slidably connected into the filter plate. The frame body moves to drive the filter plate to move from one end of the resin tank to the other end of the resin tank, so that the filter paper in the filter plate filters the resin, and when the resin needs to be bottled and recycled, the filtered resin on one side of the filter plate is poured into a bottle. And after the filter plate moves along the resin tank, the resin remaining on the inner wall of the bottom of the resin tank is scraped, so that the convenience of recovering the resin is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to 3D printing technical field, specifically relates to a 3D printer based on light solidification additive manufacturing. BACKGROUND

[0002] Light solidification additive manufacturing (SLA) is a kind of 3D printing technology based on ultraviolet light curing liquid resin. The 3D printer based on light solidification additive manufacturing is mainly composed of light source system, resin tank, printing platform and control system, the light source system selectively irradiates liquid photosensitive resin through the transparent bottom of resin tank, and the printing platform moves up and down to be cured layer by layer, and finally a three-dimensional entity is built.

[0003] The existing 3D printer based on light solidification additive manufacturing in the process of use, the resin in the resin tank usually needs manual filtering to recycle after printing, but manual filtering is by placing the filter paper rolled into a funnel shape at the bottle mouth of resin bottle to filter the impurities in the recycled resin, only a small part of filter paper is inserted at the bottle mouth, so that the connection between filter paper and bottle mouth is not stable, and the filter paper is easily knocked in the process of pouring the resin in the resin tank into the bottle, resulting in the filter paper tilting or even the bottle body toppling, and the convenience of recycling resin is insufficient. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a 3D printer based on light solidification additive manufacturing, which can move the filter plate from one end of the resin tank to the other end by the frame body, so that the filter paper in the filter plate filters the resin, when the resin needs to be bottled and recycled, the filtered resin on one side of the filter plate can be poured into the bottle, and the filter plate scrapes off the resin remaining on the inner wall of the bottom of the resin tank after moving along the resin tank, thereby improving the convenience of recycling resin.

[0005] The technical scheme adopted by the utility model is as follows:

[0006] A 3D printer based on light solidification additive manufacturing, comprising a machine body, a resin tank is installed on the machine body, and further comprising:

[0007] A filtering mechanism is arranged in the resin tank, the filtering mechanism comprises a frame body slidingly installed on the resin tank, a filter plate is installed below the frame body, the filter plate is in sliding cooperation with the resin tank, through holes are formed in the two sides of the filter plate, and filter paper is slidingly connected in the filter plate.

[0008] Wherein, the frame body moves to drive the filter plate to move from one end of the resin tank to the other end, so that the impurities in the resin tank move to the other end.

[0009] The frame is slidably connected to the resin tank. One end of the frame is detachably connected to a slider. The slider is slidably connected to the machine body. The slider is internally threaded with a lead screw. The lead screw is rotatably connected to the machine body. One end of the lead screw is equipped with a motor. The output end of the motor is fixedly connected to the lead screw. The motor is fixedly connected to the machine body.

[0010] The slider has an insertion hole inside, and a plug is fixedly connected to one end of the frame near the slider. The plug slides in conjunction with the insertion hole.

[0011] The inner side of the frame is provided with a sliding groove, and a sliding strip is fixedly connected to the outer wall of the resin tank. The sliding strip slides in conjunction with the sliding groove.

[0012] The filter plate is slidably connected to the frame in the vertical direction. A first screw is provided on the top of the filter plate. The bottom of the first screw abuts against the top of the filter plate. The first screw is threadedly connected to the frame.

[0013] The through hole is provided with several baffles, which are fixedly connected to the filter plate.

[0014] The technical effects achieved by this utility model are as follows:

[0015] The filter paper in this invention is inserted into the filter plate. After the frame moves, the filter plate moves from one end of the resin tank to the other end, so that the filter paper in the filter plate filters the resin. The filtered resin is located on one side of the filter plate, and the filtered impurities are located on the other side of the filter plate. When it is necessary to bottle and recycle the resin, the filtered resin on one side of the filter plate can be poured into the bottle. Compared with the prior art, this invention avoids the situation where the filter paper is rolled into a funnel shape and placed on the bottle mouth, which is easily damaged. This improves the convenience of resin recycling.

[0016] As the filter plate of this invention moves along the resin tank, the bottom of the filter plate scrapes away the resin remaining on the inner wall of the bottom of the resin tank, making it easier to pour the resin remaining on the inner wall of the bottom of the resin tank into a bottle for recycling, thereby improving the convenience of resin recycling. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This utility model Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 This is an exploded view of the resin tank and the filtration mechanism in this utility model;

[0020] Figure 4This is a schematic diagram of the filtration mechanism in this utility model;

[0021] Figure 5 This is an exploded view of the frame and filter plate in this utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the body and the cover in this utility model.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 10. Body; 11. Resin tank; 111. Slide bar; 20. Filtering mechanism; 21. Frame; 211. Insert block; 212. Slide groove; 22. Filter plate; 23. Through hole; 231. Baffle; 24. Filter paper; 31. Slider; 311. Insertion hole; 32. Lead screw; 33. Motor; 34. First screw. Detailed Implementation

[0025] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific implementations of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0026] like Figures 1 to 6 As shown, a 3D printer based on photopolymer additive manufacturing includes a body 10, on which a resin tank 11 is mounted, and a filter mechanism 20. The filter mechanism 20 is disposed in the resin tank 11. The filter mechanism 20 includes a frame 21 slidably mounted on the resin tank 11, and a filter plate 22 is mounted below the frame 21. The filter plate 22 is slidably engaged with the resin tank 11. Through holes 23 are provided on both sides of the filter plate 22, and filter paper 24 is slidably connected inside the filter plate 22.

[0027] It should be noted that the resin tank 11 is equipped with a cover, which is detachably connected to the machine body 10. The bottom of the cover slides vertically with the machine body 10. The resin tank 11 is existing technology and is used to hold uncured liquid photosensitive resin. A printing platform is provided above the resin tank 11. The printing platform is slidably mounted on the machine body 10 via a slide rail. A light source system (not shown in the figure) is provided inside the machine body 10 below the resin tank 11. Both the printing platform and the light source system are existing technology and will not be described in detail here. The resin tank 11 is slidably connected to the machine body 10. The end bodies 10 are detachably mounted together by a second screw. The filter paper 24 is existing technology, which allows resin to pass through but does not allow impurities to pass through, and is used to filter impurities in the resin. The filter paper 24 and the through hole 23 are slidably connected in the vertical direction. The bottom of the through hole 23 is closed, so that the lower end of the filter paper 24 does not contact the bottom inner wall of the resin tank 11. The upper end of the through hole 23 is provided with an opening for the filter paper 24 to enter and exit the through hole 23. In the initial state, the bottom of the filter plate 22 is in contact with the bottom inner wall of the resin tank 11, the filter paper 24 is inserted into the filter plate 22, and the filter paper 24 completely blocks the through hole 23.

[0028] In this embodiment, when the resin needs to be filtered before printing, the frame 21 slides along the resin tank 11, causing the filter plate 22 and filter paper 24 to move from one end of the resin tank 11 to the other end. This allows the resin on one side of the filter plate 22 to pass through the through hole 23 and filter paper 24 and move to the other side of the filter plate 22. During this process, since impurities in the resin cannot pass through the filter paper 24 to filter the resin, after the filter plate 22 moves to one end of the resin tank 11, the impurities in the resin tank 11 accumulate at the end of the resin tank 11 near the filter plate 22. The filter paper 24 divides the interior of the resin tank 11 into two spaces within the gap between the filter plate 22 and the inner wall of the resin tank 11. One space is smaller and contains all impurities, while the other space is larger and contains the filtered resin. This allows the printing platform to move up and down in the larger space and use the filtered resin for printing. When the resin needs to be filtered after printing, the frame 21 slides along the resin tank 11, moving the filter plate 22 and filter paper 24 from one end of the resin tank 11 to the other. This causes the impurities in the resin tank 11 to accumulate on one side of the filter plate 22. The resin is filtered. If it needs to be bottled, the resin tank 11 is removed from the machine body 10. The end of the resin tank 11 away from the filter plate 22 is tilted downwards and aligned with the bottle opening, allowing the resin in the resin tank 11 to flow into the bottle. Since the impurities are located on the side of the filter plate 22 away from the bottle opening, they are blocked by the filter paper 24 and cannot move into the bottle. If it is necessary to scrape the resin remaining on the bottom inner wall of the resin tank 11 into the bottle for collection, the filter plate 22, which has been moved to the end of the resin tank 11 away from the bottle opening, is moved towards the end closer to the bottle opening, so that the filter plate 22... The bottom moves along the inner wall of the bottom of the resin tank 11 and pushes the residual resin toward the side closer to the bottle opening, thereby facilitating the recovery of the residual resin into the bottle. Compared with the prior art, the resin can be filtered before and after printing, avoiding the situation where the filter paper 24 is rolled into a funnel shape and placed on the bottle opening, which is easily damaged. In addition, the bottom of the filter plate 22 moves along the resin tank 11, which also facilitates the scraping of the resin residue on the inner wall of the bottom of the resin tank 11, thereby improving the convenience of resin recovery. The filter paper 24 is slidably connected to the filter plate 22, which facilitates the replacement of the filter paper 24.

[0029] like Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, the frame 21 is slidably connected to the resin tank 11. One end of the frame 21 is detachably connected to a slider 31. The slider 31 is slidably connected to the machine body 10. The slider 31 is internally threaded with a lead screw 32. The lead screw 32 is rotatably connected to the machine body 10. One end of the lead screw 32 is equipped with a motor 33. The output end of the motor 33 is fixedly connected to the lead screw 32. The motor 33 is fixedly connected to the machine body 10.

[0030] It should be noted that baffles are provided on both sides of the slider 31, the baffles are fixedly connected to the machine body 10, and a guide rod is fixedly connected between the two baffles. The slider 31 is slidably connected to the guide rod. The two ends of the lead screw 32 are rotatably connected to the two baffles respectively. The lead screw 32 is rotatably connected to the machine body 10 through the baffles. The motor 33 is fixedly installed on one of the baffles. The motor 33 is fixedly connected to the machine body 10 through the baffle.

[0031] In this embodiment, after the motor 33 operates, its output end drives the lead screw 32 to rotate. The lead screw 32 drives the slider 31 to move along the machine body 10. The slider 31 drives the frame 21 to move along the resin tank 11, thereby facilitating the frame 21 to move the filter plate 22 from one end of the resin tank 11 to the other end. Since the frame 21 and the slider 31 are detachably connected, when it is necessary to remove the resin tank 11 from the machine body 10, the frame 21 is removed from the slider 31. This ensures that after the resin tank 11 is removed, it remains connected to the filter mechanism 20, which facilitates the subsequent bottling of the resin in the resin tank 11 by scraping off the residual resin on the bottom inner wall of the resin tank 11 by moving the filter plate 22.

[0032] like Figure 4 and Figure 5 As shown, the slider 31 has an insertion hole 311 inside, and the frame 21 is fixedly connected to one end near the slider 31 with an insertion block 211, which slides in conjunction with the insertion hole 311.

[0033] It should be noted that the top of the socket 311 is threaded with a third screw, and the bottom of the third screw abuts against the top of the plug 211.

[0034] In this embodiment, when the insert 211 is inserted into the socket 311, the slider 31 limits the frame 21, so that the slider 31 moves and drives the frame 21 to move together. When the insert 211 is pulled out of the socket 311, the slider 31 is separated from the frame 21. At this time, the slider 31 can no longer drive the frame 21 to move together.

[0035] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, a sliding groove 212 is provided on the inner side of the frame 21, and a sliding strip 111 is fixedly connected to the outer wall of the resin tank 11. The sliding strip 111 and the sliding groove 212 are in sliding cooperation.

[0036] It should be noted that the cross-sectional shape of the slide bar 111 and the slide groove 212 is dovetail-shaped or "T"-shaped. The present invention is preferably dovetail-shaped. In the initial state, the frame 21 is located at one end of the resin tank 11, and the slide bar 111 is not inserted into the slide groove 212 at this time.

[0037] In this embodiment, the slider 111 cooperates with the groove 212 to make the process of the frame 21 sliding along the resin tank 11 more stable. When it is necessary to slide the frame 21 and the resin tank 11, the frame 21 is placed at one end of the resin tank 11 from top to bottom, so that the groove 212 and the slider 111 are aligned. The frame 21 is moved to the side closer to the slider 111, so that the slider 111 is inserted into the groove 212, thereby making the frame 21 and the resin tank 11 slide connected.

[0038] like Figure 2 , Figure 4 and Figure 5 As shown, the filter plate 22 is slidably connected to the frame 21 in the vertical direction. A first screw 34 is provided on the top of the filter plate 22. The bottom of the first screw 34 abuts against the top of the filter plate 22. The first screw 34 is threadedly connected to the frame 21.

[0039] It should be noted that a sliding column is fixedly connected to the filter plate 22, and a sliding hole is opened inside the frame 21. The sliding column and the sliding hole slide together in the vertical direction.

[0040] In this embodiment, after the first screw 34 is rotated, the bottom of the first screw 34 pushes the filter plate 22 downward, so that the bottom of the filter plate 22 can fit with the bottom inner wall of the resin tank 11, reducing the gap between the bottom of the filter plate 22 and the bottom inner wall of the resin tank 11, and reducing the possibility of resin moving from one side of the filter plate 22 to the other side through the gap.

[0041] like Figure 4 and Figure 5 As shown, several baffles 231 are provided inside the through hole 23, and the baffles 231 are fixedly connected to the filter plate 22.

[0042] It should be noted that the inner side of the baffle 231 is in close contact with the surface of the filter paper 24.

[0043] In this embodiment, when the resin passes through the through hole 23 and the filter paper 24, the large area of ​​the through hole 23 makes it easy for the filter paper 24 to bend and deform to one side or even be pulled out of the filter plate 22 from the through hole 23. The baffle 231 is in contact with the filter paper 24, which helps to prevent the filter paper 24 from bending and deforming during the process of the resin passing through the filter paper 24, thereby improving the stability of the filter paper 24 in the filter plate 22.

[0044] The working principle of this utility model is as follows: After the frame 21 moves along the resin tank 11, it drives the filter plate 22 to move from one end of the resin tank 11 to the other end. During this process, the resin moves from one side of the filter paper 24 to the other side, thereby filtering impurities in the resin. This avoids the situation where the filter paper 24 is rolled into a funnel shape and placed on the bottle mouth, making it easy to be bumped. The filtered resin is located on one side of the filter paper 24, which makes it easy to pour the filtered resin into the bottle from one side of the filter paper 24. After the filter plate 22 moves along the resin tank 11, the bottom of the filter plate 22 moves along the bottom inner wall of the resin tank 11 to scrape off the residual resin on the bottom inner wall of the resin tank 11, which makes it easy to bottle and recycle the resin, thereby improving the convenience of resin recycling.

[0045] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A 3D printer based on photopolymer additive manufacturing, characterized in that, The machine includes a body (10) on which a resin tank (11) is mounted, and also includes: The filter mechanism (20) is disposed in the resin tank (11). The filter mechanism (20) includes a frame (21) that is slidably mounted on the resin tank (11). A filter plate (22) is installed below the frame (21). The filter plate (22) is slidably engaged with the resin tank (11). Through holes (23) are provided on both sides of the filter plate (22). Filter paper (24) is slidably connected inside the filter plate (22). When the frame (21) moves, it drives the filter plate (22) to move from one end of the resin tank (11) to the other end, so that the impurities in the resin tank (11) move to the other end.

2. The 3D printer based on photopolymer additive manufacturing according to claim 1, characterized in that: The frame (21) is slidably connected to the resin tank (11). One end of the frame (21) is detachably connected to a slider (31). The slider (31) is slidably connected to the machine body (10). The slider (31) is internally threaded with a lead screw (32). The lead screw (32) is rotatably connected to the machine body (10). One end of the lead screw (32) is equipped with a motor (33). The output end of the motor (33) is fixedly connected to the lead screw (32). The motor (33) is fixedly connected to the machine body (10).

3. The 3D printer based on photopolymer additive manufacturing according to claim 2, characterized in that: The slider (31) has an insertion hole (311) inside. The frame (21) is fixedly connected to a plug (211) at one end near the slider (31). The plug (211) slides in conjunction with the insertion hole (311).

4. The 3D printer based on photopolymer additive manufacturing according to claim 2, characterized in that: The inner side of the frame (21) is provided with a sliding groove (212), and a sliding strip (111) is fixedly connected to the outer wall of the resin tank (11). The sliding strip (111) and the sliding groove (212) are in sliding cooperation.

5. The 3D printer based on photopolymer additive manufacturing according to claim 1, characterized in that: The filter plate (22) is slidably connected to the frame (21) in the vertical direction. A first screw (34) is provided above the filter plate (22). The bottom of the first screw (34) abuts against the top of the filter plate (22). The first screw (34) is threadedly connected to the frame (21).

6. The 3D printer based on photopolymer additive manufacturing according to claim 1, characterized in that: The through hole (23) is provided with a number of baffles (231), and the baffles (231) are fixedly connected to the filter plate (22).

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