Precision-adjustable 3D printer scraper device

Abstract

The utility model relates to the related technical field of 3D printing, in particular to a precision-adjustable 3D printer scraper device which comprises a base, a display screen is fixedly connected to the surface of one side of the base, a sliding rail is fixedly connected to the surface of the upper portion of the base, and a workbench is slidably connected to the surface of the upper portion of the sliding rail. According to the precision-adjustable 3D printer scraper device, adjustment is convenient and efficient, accurate adjustment of the height of the scraper can be achieved by simply rotating the grip, the structural stability is high, a stable mechanical structure is formed through the symmetrically-distributed moving part, the fixed rod and other parts, shaking and deviation are not likely to be generated in the adjustment and working process, it is ensured that the printing process is stable and reliable, and the printing efficiency is improved. The 3D printer is simple in structure, convenient to use, wide in applicability and capable of being flexibly adapted to printing materials with different characteristics, the ideal material laying effect can be achieved by adjusting the height of the scraper for both resin with good fluidity and granular metal powder, and the application scene of the 3D printer is greatly expanded.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing technology, and in particular to a precision adjustable scraper device for a 3D printer. Background Technology

[0002] In the field of 3D printing technology, 3D printers are the core equipment for additive manufacturing. Based on computer-designed three-dimensional model data, they directly manufacture solid objects by layering various materials such as plastics, metal powders, and resins. From customized dentures and orthopedic implants in the medical field to complex parts in the aerospace field, 3D printers have broken through many limitations of traditional manufacturing and greatly expanded the boundaries of manufacturing due to their advantages of rapid prototyping and personalized customization. However, during the printing process, the uniform application of printing material directly affects the precision and quality of the finished product, which requires a key component to ensure this. Therefore, a precision-adjustable 3D printer scraper device is particularly needed.

[0003] Chinese patent CN221793818U, published on October 1, 2024, discloses a 3D printer scraper. It allows for easy cleaning by manually pressing down on the protective frame, thus improving scraper safety. The printer also uses pressure on the protective frame for movement, providing a cushioning effect and enhancing scraper protection. However, this 3D printer scraper still relies heavily on continuous manual operation. From pre-printing parameter adjustments to frequent scraper position calibrations due to material properties and model changes during printing, operators must constantly monitor and manually intervene. This high-intensity, continuous human investment not only increases the operator's workload but also increases the risk of operational errors due to fatigue, ultimately affecting the overall efficiency and precision of the 3D printing product. Utility Model Content

[0004] The purpose of this invention is to provide a precision-adjustable 3D printer scraper device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a precision adjustable 3D printer scraper device, comprising a base, a display screen fixedly connected to one side surface of the base, a sliding rail fixedly connected to the upper surface of the base, a worktable slidably connected to the upper surface of the sliding rail, a movable frame fixedly connected to one side surface of the base, a nozzle device slidably connected to one side surface of the movable frame, and a scraper mechanism provided on one side surface of the worktable.

[0006] The scraping mechanism includes a blade. The blade is slidably connected to one side surface of the workbench. The blade is slidably connected with a fixed block. A placement groove is formed on one side surface of the fixed block. A fixing rod penetrates and connects to one side surface of the fixed block. A moving part is fixedly connected to one side surface of the fixing rod. The outer wall surface of the moving part is slidably connected with a moving housing. A limiting groove is formed on one side surface of the moving housing. A guiding rod is fixedly connected to the inner wall surface of the limiting groove. A threaded rod is threadedly connected to the inner wall surface on one side of the moving part. A grip is fixedly connected to the upper surface of the threaded rod.

[0007] Preferably, there are two moving housings with the same size, and they are symmetrically distributed along the central axis of the fixing rod. There are two sliding tracks with the same size, and they are symmetrically distributed along one side surface of the base close to the workbench.

[0008] Preferably, there are two fixing rods with the same size, and they are symmetrically distributed along the central axis of the moving part. The fixing rods are parallel to the workbench.

[0009] Preferably, there are two moving parts with the same size, and they are symmetrically distributed along the central axis of the fixing rod. The outer wall size of the end of the moving part away from the fixing rod matches the inner wall size of the limiting groove.

[0010] Preferably, the cross-section of the moving part is designed in an "I" shape. The two moving parts and the two fixing rods are arranged in a "square" shape.

[0011] Preferably, there are multiple fixed blocks, blades and placement grooves with the same size, and they are arranged at equal distances along the fixing rod. The inner wall size of the placement groove matches the outer surface size of one end of the blade close to the fixed block.

[0012] Preferably, the blade is at an inclined angle. The cross-sections of the blade and the placement groove are both designed in an "L" shape.

[0013] Compared with existing technologies, the advantages of this utility model are as follows: This precision-adjustable 3D printer scraper device, through the scraper mechanism, offers convenient and efficient adjustment. The scraper height can be precisely adjusted simply by rotating the handle. Compared to traditional scraper devices, it significantly reduces adjustment time and labor costs. The threaded engagement between the threaded rod and the moving part, the support provided by the moving shell, and the guiding design of the guide rod and the limiting groove enable the scraper height adjustment to be precise to the finest degree, meeting various high-precision 3D printing tasks. It boasts strong structural stability; the symmetrically distributed moving parts, fixed rods, and other components form a robust mechanical structure, preventing shaking or deviation during adjustment and operation, ensuring a stable and reliable printing process. It also has wide applicability, flexibly adapting to various printing materials with different properties. Whether it's resin with good flowability or granular metal powder, ideal material laying effects can be achieved by adjusting the scraper height, greatly expanding the application scenarios of 3D printers. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

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

[0016] Figure 3 This is a schematic diagram of the scraper mechanism of this utility model;

[0017] Figure 4 This is a schematic diagram of the disassembled scraper mechanism of this utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the blade and the placement groove of this utility model.

[0019] In the diagram: 1. Base; 2. Display screen; 3. Sliding rail; 4. Workbench; 5. Movable frame; 6. Nozzle assembly; 7. Scraper mechanism; 701. Blade; 702. Fixing block; 703. Placement slot; 704. Fixing rod; 705. Moving part; 706. Moving housing; 707. Limiting slot; 708. Guide rod; 709. Threaded rod; 710. Handle. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-5This utility model provides a technical solution: a precision adjustable 3D printer scraper device, including a base 1, a display screen 2 fixedly connected to one side surface of the base 1, a sliding rail 3 fixedly connected to the upper surface of the base 1, a worktable 4 slidably connected to the upper surface of the sliding rail 3, a movable frame 5 fixedly connected to one side surface of the base 1, a nozzle device 6 slidably connected to one side surface of the movable frame 5, and a scraper mechanism 7 provided on one side surface of the worktable 4.

[0022] The scraper mechanism 7 includes a blade 701, which is slidably connected to one side surface of the worktable 4. A fixing block 702 is slidably connected to the blade 701. A placement groove 703 is formed on one side surface of the fixing block 702. A fixing rod 704 is connected through one side surface of the fixing block 702. A movable component 705 is fixedly connected to one side surface of the fixing rod 704. A movable housing 706 is slidably connected to the outer wall surface of the movable component 705. A limiting groove 707 is formed on one side surface of the movable housing 706. A guide rod 708 is fixedly connected to the inner wall surface of the limiting groove 707. A threaded rod 709 is threadedly connected to the inner wall surface of one side of the movable component 705. A handle 710 is fixedly connected to the upper surface of the threaded rod 709. Through the arrangement of the blade 701, fixing block 702, placement groove 703, fixing rod 704, movable component 705, movable housing 706, limiting groove 707, guide rod 708, threaded rod 709, and handle 710, during use, rotating the handle... 710 drives the threaded rod 709 to rotate. Since the threaded rod 709 is threadedly connected to the moving part 705, the rotating threaded rod 709 will push or pull the moving part 705 to slide along the guide rod 708 on the inner wall of the moving housing 706 in the limiting groove 707. The two symmetrically distributed moving parts 705 move synchronously, thereby driving the fixed rod 704 and its fixedly connected fixed block 702 to translate. The fixed block 702 fixes the blade 701 through the placement groove 703. As the fixed block 702 moves, the height of the scraper can be adjusted to adapt to different printing materials and precision requirements. In addition, since the blade 701 and the placement groove 703 are both "L" shaped and the blade 701 is at an inclined angle, the blade 701 can scrape off excess material during the movement of the worktable 4 along the sliding rail 3. The height of the scraper can be adjusted by simply rotating the handle 710. Combined with the movement of the worktable 4, the work can be completed. The operation is simple and quick, greatly shortening the adjustment time and reducing the labor input.

[0023] Furthermore, two movable housings 706 of the same size are provided and are symmetrically distributed along the central axis of the fixed rod 704. Two sliding rails 3 of the same size are provided and are symmetrically distributed along the side surface of the base 1 near the worktable 4. Through the provision of movable housings 706, during use, the two symmetrically distributed movable housings 706 provide a stable track and limiting space for the moving part 705. The symmetrical distribution design ensures that when the threaded rod 709 drives the moving part 705 to slide, it can strictly translate along the predetermined direction and avoid deviation or shaking.

[0024] Furthermore, two fixed rods 704 of the same size are provided and are symmetrically distributed along the central axis of the moving part 705. The fixed rods 704 are parallel to the worktable 4. With the setting of the fixed rods 704, when the moving part 705 slides along the guide rod 708 under the drive of the threaded rod 709, the two fixed rods 704 move synchronously, driving all the fixed blocks 702 and the blades 701 on them to move at the same speed and in the same direction. This parallel distribution structure design ensures that the blades 701 always maintain a constant relative angle and height difference with the worktable 4 during the adjustment process, avoiding uneven material laying caused by unilateral force or angular deviation.

[0025] Furthermore, two movable parts 705 of the same size are provided and are symmetrically distributed along the central axis of the fixed rod 704. The outer wall dimension of the end of the movable part 705 away from the fixed rod 704 matches the inner wall dimension of the limiting groove 707. Through the arrangement of the movable part 705 and the limiting groove 707, during use, the movement trajectory of the movable part 705 is strictly limited due to the tight fit between the movable part 705 and the limiting groove 707, ensuring that it can only move in a straight line in a fixed direction, eliminating lateral deviation or shaking, and ensuring the stability of the mechanism.

[0026] Furthermore, the cross-section of the movable component 705 is designed in the shape of an "I". The two movable components 705 and the two fixed rods 704 are arranged in a "U" shape. Through the setting of the movable component 705, the "I" shaped cross-section of the movable component 705 increases the contact area with the limiting groove 707 and the movable housing 706 during use. When the threaded rod 709 drives the movable component 705 to slide along the guide rod 708, it can not only effectively distribute the force, but also enhance the stability during the movement process.

[0027] Furthermore, multiple fixing blocks 702, blades 701, and placement slots 703 of the same size are provided and are arranged at equal intervals along the fixing rod 704. The inner wall size of the placement slot 703 matches the outer surface size of the end of the blade 701 closest to the fixing block 702. Through the arrangement of the fixing blocks 702, blades 701, and placement slots 703, in use, the fixing blocks 702 are tightly fitted with the blades 701 through the placement slots 703. When the moving part 705 moves the fixing rod 704 horizontally, all fixing blocks 702 can move synchronously, thereby driving the equally spaced blades 701 to adjust their height uniformly. The precise size matching between the placement slots 703 and the blades 701 ensures that the blades 701 are stable and do not wobble after installation. During the movement of the worktable 4, these blades 701 can continuously and evenly scrape off excess printing material, spreading the material evenly like combing hair.

[0028] Furthermore, the blade 701 is inclined, and both the blade 701 and the placement groove 703 have an "L" shaped cross-section. With the blade 701 in place, when the worktable 4 moves along the sliding track 3, the inclined blade 701 can cut into the printing material layer at a certain angle. Compared with a vertical blade, this inclined design makes the blade 701 more evenly stressed when scraping off excess material.

[0029] Working principle: During operation, the nozzle device 6 of this adjustable precision 3D printer's scraper mechanism is responsible for depositing printing material layer by layer onto the worktable 4, while the scraper mechanism 7 ensures a smooth material surface. When the scraper precision needs to be adjusted, the operator can rotate the handle 710 to rotate the threaded rod 709. Since the threaded rod 709 is threadedly connected to the moving part 705, the rotating threaded rod 709 will push or pull the moving part 705 to slide along the guide rod 708 on the inner wall of the moving housing 706 within the limiting groove 707. The two symmetrically distributed moving parts 705 move synchronously, thereby driving the fixed rod 704 and its fixedly connected fixing block 7. 02. The fixed block 702 fixes the blade 701 through the placement groove 703. As the fixed block 702 moves, the height of the scraper can be adjusted to adapt to different printing materials and precision requirements. In addition, since both the blade 701 and the placement groove 703 are "L" shaped and the blade 701 is at an inclined angle, the blade 701 can scrape off excess material as the worktable 4 moves along the sliding rail 3, so that the printing material is evenly spread on the worktable 4, ensuring the flatness and thickness accuracy of each layer of printing material, and providing a guarantee for high-precision molding of 3D printing. This completes the use of a precision adjustable 3D printer scraper device.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A precision-adjustable 3D printer scraper device, comprising a base (1), characterized in that: One side surface of the base (1) is fixedly connected with a display screen (2). The upper surface of the base (1) is fixedly connected with a sliding track (3). The upper surface of the sliding track (3) is slidably connected with a workbench (4). One side surface of the base (1) is fixedly connected with a movable frame (5). One side surface of the movable frame (5) is slidably connected with a nozzle device (6). One side surface of the workbench (4) is provided with a scraping mechanism (7). The scraping mechanism (7) includes a blade (701). The blade (701) is slidably connected to one side surface of the workbench (4). The blade (701) is slidably connected with a fixed block (702). A placement groove (703) is formed on one side surface of the fixed block (702). One side surface of the fixed block (702) is penetrated and connected with a fixing rod (704). One side surface of the fixing rod (704) is fixedly connected with a moving member (705). The outer wall surface of the moving member (705) is slidably connected with a moving housing (706). A limiting groove (707) is formed on one side surface of the moving housing (706). A guiding rod (708) is fixedly connected to the inner wall surface of the limiting groove (707). The inner wall surface of one side of the moving member (705) is threadedly connected with a threaded rod (709). A grip (710) is fixedly connected to the upper surface of the threaded rod (709).

2. The precision-adjustable 3D printer scraper device according to claim 1, characterized in that: There are two moving housings (706) with the same size, and they are symmetrically distributed along the central axis of the fixing rod (704). There are two sliding tracks (3) with the same size, and they are symmetrically distributed along one side surface of the base (1) close to the workbench (4).

3. The precision-adjustable 3D printer scraper device according to claim 1, characterized in that: There are two fixing rods (704) with the same size, and they are symmetrically distributed along the central axis of the moving member (705). The fixing rod (704) is parallel to the workbench (4).

4. The precision-adjustable 3D printer scraper device according to claim 1, characterized in that: There are two moving members (705) with the same size, and they are symmetrically distributed along the central axis of the fixing rod (704). The outer wall size of one end of the moving member (705) away from the fixing rod (704) matches the inner wall size of the limiting groove (707).

5. The precision-adjustable 3D printer scraper device according to claim 1, characterized in that: The cross-section of the moving member (705) is designed in an "I" shape. The two moving members (705) and the two fixing rods (704) are arranged in a "square" shape.

6. The precision-adjustable 3D printer scraper device according to claim 1, characterized in that: There are multiple fixing blocks (702), blades (701) and placement grooves (703) with the same size, and they are arranged at equal intervals along the fixing rod (704). The inner wall size of the placement groove (703) matches the outer surface size of one end of the blade (701) close to the fixing block (702).

7. The precision-adjustable 3D printer scraper device according to claim 1, characterized in that: The blade (701) is at an inclined angle. The cross-sections of the blade (701) and the placement groove (703) are both designed in an "L" shape.

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