Scraper structure for 3D printer

Abstract

The utility model discloses a scraper structure for a 3D printer, and particularly relates to the field of printer scraper production, a pair of through grooves is formed in one side of a mounting groove, and insertion blocks which can move left and right and can be connected with fixing grooves in an inserted mode are mounted in the through grooves; a pair of positioning grooves matched with the inserting blocks is formed in one side of the blade. By pulling a pull rod outwards, the pull rod drives the two turning rods and the two inserting blocks to move outwards, so that the rear side ends of the two inserting blocks are separated from the fixing grooves and are located in the through holes, and meanwhile, the connecting springs are stretched; then the blade is completely inserted into the mounting groove, then the pull rod is loosened, the connecting spring rebounds to drive the two inserting blocks to move backwards to penetrate through the positioning groove to be connected with the fixing groove in an inserted mode, and therefore mounting of the blade on the fixing body is completed. The blade may also be removed by an opposite step. The matching of the structure achieves the effect that the blade is convenient to mount and dismount.

Description

Technical Field

[0001] The utility model relates to the technical field of printer scraper production, in particular to a scraper structure for a 3D printer. Background Art

[0002] The technology of 3D printing using photosensitive resin is developing rapidly. This technology is a high-precision additive manufacturing technology. Conventional 3D printers have a resin tank, which contains liquid photosensitive resin. The 3D printing platform is immersed in the photosensitive resin. The printing platform can be raised and lowered in the vertical direction. The 3D printer also includes a scraping mechanism used in conjunction with the 3D printing platform. The scraper of the scraping mechanism extends into the resin tank. The scraper can move horizontally but cannot move vertically.

[0003] A Chinese patent disclosed a scraper structure for a 3D printer with a publication number of CN210759273U, and the application date is 2019.08.26. The patented technology divides the scraper into two parts: a blade and a blade body. After the blade is worn, it is not necessary to disassemble the entire blade, only the blade needs to be replaced. At the same time, the blade is fixed to both sides of the bottom of the blade body by bolts, so that the blade can be easily removed from the blade body, solving the problem of the troublesome removal of the scraper. However, when disassembling or installing the blade, the above patent is inconvenient to use tools to unscrew the bolts that fix the blade because the blade body is inside the printer, which leads to the inconvenience of removing and installing the blade. Therefore, those skilled in the art provide a scraper structure for a 3D printer to solve the problems raised in the above background technology. Utility Model Content

[0004] The utility model aims to provide a scraper structure for a 3D printer, which is convenient for installing or removing a blade inside the 3D printer.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A scraper structure for a 3D printer comprises a fixed body, a mounting groove is provided at the bottom of the fixed body, a blade for easy disassembly is installed inside the mounting groove, a pair of fixed grooves is provided on one side of the mounting groove, a pair of through grooves is provided on one side of the mounting groove, an insert block which can move left and right and can be plugged into the fixed groove is installed inside the through groove; a pair of positioning grooves which are compatible with the insert block are provided on one side of the blade.

[0007] As a further solution of the utility model: a pair of sliding grooves are opened on one side of the fixed body, a connecting spring is fixedly connected to one side of the sliding groove, a turning rod is fixedly connected to the other side of the connecting spring, one side of the turning rod is fixedly connected to the insert block; and pull rods are fixedly connected to the opposite sides of the two turning rods.

[0008] As a further solution of the utility model: one side of the turning rod is adapted to the size of the sliding groove.

[0009] As a further solution of the utility model: an observation hole is opened in the middle of the front side of the blade, and a glass piece is installed inside the observation hole.

[0010] As a further solution of the utility model: an air inlet hole is opened on one side of the installation groove, and a vent hole is opened on one side of the blade.

[0011] As a further solution of the utility model: mirror-symmetrical right-angle grooves are provided on both sides of the blade.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The scraper structure for the 3D printer is to pull the pull rod outward, and the pull rod drives the two turning rods and the two plug blocks to move outward, so that the rear side ends of the two plug blocks are separated from the fixed groove and located inside the through hole, and the connecting spring is stretched at the same time; then the blade is completely inserted into the installation groove, and then the pull rod is released, and the connecting spring rebounds and drives the two plug blocks to move backward through the positioning groove and plug into the fixed groove, thereby completing the installation of the blade on the fixed body. The blade can also be removed by the reverse steps. The cooperation of the above structure achieves the effect of convenient installation and disassembly of the blade.

[0014] In addition, the 3D printer uses a scraper structure. By starting the vacuum machine, the vacuum machine creates a vacuum inside the mounting slot through the air pipe. When the blade reciprocates back and forth during the 3D printing process, the vacuum effect can make the cavity absorb a certain height of resin and eliminate bubbles generated in the resin, thereby improving the 3D printing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of a split three-dimensional structure of a scraper structure for a 3D printer;

[0016] Figure 2 A schematic diagram of a three-dimensional structure of a fixed main body section in a scraper structure for a 3D printer;

[0017] Figure 3 A schematic diagram of a partial three-dimensional structure of a fixed body in a scraper structure for a 3D printer when viewed from above;

[0018] Figure 4 It is a right-view cross-sectional schematic diagram of the overall structural connection of a scraper structure for a 3D printer.

[0019] In the figure: 10, fixed body; 11, installation slot; 12, fixed slot; 13, through slot; 14, air inlet; 20, sliding slot; 21, connecting spring; 22, turning rod; 23, plug block; 24, pull rod; 30, blade; 31, positioning slot; 32, vent hole; 33, observation hole; 34, glass piece; 35, right-angle slot. DETAILED DESCRIPTION

[0020] like Figure 1 As shown, a scraper structure for a 3D printer includes a fixed body 10, which is installed inside the 3D printer. A mounting groove 11 is provided at the bottom of the fixed body 10, and a blade 30 that is easy to disassemble is installed inside the mounting groove 11.

[0021] refer to Figure 2 , 3 The left and right sides of the back of the installation slot 11 are provided with fixing slots 12, the left and right sides of the front of the installation slot 11 are provided with through slots 13, and the middle position of the back side of the installation slot 11 is provided with an air inlet hole 14;

[0022] refer to Figure 2 The fixed body 10 has sliding grooves 20 on the left and right sides of the front surface, and a connecting spring 21 is fixedly connected to the rear side of the sliding groove 20. A turning rod 22 is fixedly connected to the front side of the connecting spring 21. The turning rod 22 is slidably connected to the sliding groove 20 at a, and an insert block 23 is fixedly connected to the rear side of the turning rod 22 at b. The insert block 23 is slidably connected to the through groove 13. The opposite sides of the two turning rods 22 are fixedly connected to pull rods 24.

[0023] Preferably, the portion a of the turning rod 22 is adapted to the size of the sliding slot 20 , so that when the turning rod 22 moves forward and backward, the turning rod 22 can be guided and limited.

[0024] When the fixed body 10 is not connected to the blade 30 , the connecting spring 21 supports the turning rod 22 so that the turning rod 22 is retracted into the sliding groove 20 at a point a, and at this time, the insert block 23 is plugged into the fixed groove 12 .

[0025] refer to Figure 1 , 4 The width of the blade 30 matches the width of the installation slot 11, so that the blade 30 is easily inserted into the installation slot 11. Positioning slots 31 are provided on the left and right sides of the front of the blade 30. The two positioning slots 31 correspond to the positions of the fixing slots 12, and the positioning slots 31 match the size of the insert block 23.

[0026] When in use, the pull rod 24 is pulled outward, and the pull rod 24 drives the two turning rods 22 and the two inserting blocks 23 to move outward, so that the rear side ends of the two inserting blocks 23 are separated from the fixing groove 12 and located inside the through groove 13, and the connecting spring 21 is stretched at the same time; then the blade 30 is completely inserted into the installation groove 11, and then the pull rod 24 is released, and the connecting spring 21 rebounds and drives the two inserting blocks 23 to move backward through the positioning groove 31 and plug into the fixing groove 12, thereby completing the installation of the blade 30 on the fixed body 10. The blade 30 can also be removed by the reverse steps.

[0027] refer to Figure 1 A vent hole 32 is provided in the middle of the front side of the blade 30. When the blade 30 is installed in the mounting groove 11, the vent hole 32 is communicated with the air inlet hole 14, and then the outside of the air inlet hole 14 is connected to the vacuum machine through an air pipe. When in use, the vacuum machine is started, and the vacuum machine generates a vacuum inside the mounting groove 11 through the air pipe. When the blade 30 reciprocates back and forth during the 3D printing process, the vacuum effect can make the cavity absorb a certain height of resin and eliminate bubbles generated in the resin, thereby improving the effect of 3D printing.

[0028] refer to Figure 1 , 4 An observation hole 33 is provided in the middle of the front side of the blade 30 , and a glass sheet 34 is installed inside the observation hole 33 , so that the liquid level can be checked through the observation hole 33 during the 3D printing process.

[0029] refer to Figure 1 , 4 The front and rear sides of the blade 30 are provided with mirror-symmetrical right-angle grooves 35. During the 3D printing process, the right-angle grooves 35 can facilitate the lateral movement of the blade 30, and can also puncture bubbles in the resin and scrape off some impurities.

[0030] The working principle of the utility model is: pull the pull rod 24 outward, the pull rod 24 drives the two turning rods 22 and the two plug blocks 23 to move outward, so that the rear side ends of the two plug blocks 23 are separated from the fixed groove 12 and located inside the through groove 13, and the connecting spring 21 is stretched at the same time; then the blade 30 is completely inserted into the installation groove 11, and then the pull rod 24 is released, and the connecting spring 21 rebounds and drives the two plug blocks 23 to move backward through the positioning groove 31 and plug into the fixed groove 12, thereby completing the installation of the blade 30 on the fixed body 10. The blade 30 can also be removed by the reverse steps.

[0031] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A scraper structure for a 3D printer, comprising a fixed body (10), a mounting groove (11) is provided at the bottom of the fixed body (10), a blade (30) which is convenient for disassembly is installed inside the mounting groove (11), characterized in that: A pair of fixing grooves (12) are provided on one side of the interior of the installation groove (11); a pair of through grooves (13) are provided on one side of the installation groove (11); an insert block (23) which can move leftward and rightward and can be plugged into the fixing groove (12) is installed inside the through groove (13); and a pair of positioning grooves (31) which are compatible with the insert block (23) are provided on one side of the blade (30).

2. A scraper structure for a 3D printer according to claim 1, characterized in that: A pair of sliding grooves (20) are provided on one side of the fixed body (10); a connecting spring (21) is fixedly connected to one side of the sliding groove (20); a turning rod (22) is fixedly connected to the other side of the connecting spring (21); one side of the turning rod (22) is fixedly connected to an insert block (23); and a pull rod (24) is fixedly connected to the opposite sides of the two turning rods (22).

3. A scraper structure for a 3D printer according to claim 2, characterized in that: One side of the turning rod (22) is matched in size to the sliding groove (20).

4. A scraper structure for a 3D printer according to claim 1, characterized in that: An observation hole (33) is provided in the middle of the front side of the blade (30), and a glass sheet (34) is installed inside the observation hole (33).

5. The scraper structure for a 3D printer according to claim 1, characterized in that: An air inlet hole (14) is provided on one side of the installation groove (11), and an air vent hole (32) is provided on one side of the blade (30).

6. A scraper structure for a 3D printer according to claim 1, characterized in that: Mirror-symmetrical right-angle grooves (35) are formed on both sides of the blade (30).

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