3D printer discharging device with adjustable scraper knife

Abstract

The invention discloses a scraper-knife-adjustable 3D printer discharging device, and belongs to the technical field of 3D printing, the scraper-knife-adjustable 3D printer discharging device comprises a scraper knife structure arranged at the top of a printer platform and a driving structure arranged at the bottom of the printer platform, and the two ends of the scraper knife structure are connected with the driving structure through supporting structures correspondingly; the scraper knife structure comprises a scraper knife body and a scraper knife reinforcing plate which are both connected with the supporting structure. The scraper knife body makes contact with the top face of a printer platform, the scraper knife reinforcing plate is located at the top of the scraper knife body, a plurality of connecting point positions are arranged between the scraper knife body and the scraper knife reinforcing plate, one connecting point position is located in the middle of the scraper knife body, and the positions, close to the connecting point positions, of the scraper knife reinforcing plate are connected with jacking pieces through threads respectively. After the scraper knife body deforms, the deformation of the scraper knife body is adjusted through the jacking piece, so that the scraper knife can effectively work, the service life of the scraper knife is prolonged, the frequency of replacing the scraper knife due to the deformation of the scraper knife is reduced, and the maintenance cost of 3D printing is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printing, and particularly relates to a 3D printer unloading device with an adjustable scraper blade. Background Art

[0002] During the 3D printing process, a scraper blade is used to remove the printed object or excess printing material on the printing platform. In printing technologies such as FDM (Fused Deposition Modeling) and SLA (Stereolithography Apparatus), the adhesion between the printed part and the printing platform is relatively strong. The traditional manual scraping method is prone to damage the printed part and has low efficiency. In addition, the existing scraper blade has a simple structure, usually a single flat plate. When scraping the model, the acting force is concentrated on the blade edge and the contact area with the model, lacking a reasonable force dispersion structure. During the use of such a scraper blade, the blade part of the scraper blade or the entire scraper blade structure is prone to upward bending or twisting deformation due to uneven force or material deformation. This deformation will cause the scraper blade to be unable to effectively remove the material on the printing platform, affecting the printing quality. If the deformation is serious, it may also damage the surface of the printing platform. Summary of the Invention

[0003] The purpose of the present invention is to provide a 3D printer unloading device with an adjustable scraper blade, so as to solve the problem that the scraper blade of the existing 3D printer is prone to deformation when the force is too large, resulting in the inability to effectively remove the material on the printing platform and damaging the printing platform seriously in severe cases.

[0004] The technical solution of the present invention to solve the above technical problems is as follows:

[0005] A 3D printer unloading device with an adjustable scraper blade includes: a scraper blade structure arranged on the top of the printer platform and a driving structure arranged on the bottom of the printer platform, and both ends of the scraper blade structure are respectively connected to the driving structure through a support structure;

[0006] The scraper blade structure includes a scraper blade body and a scraper blade reinforcement plate both connected to the support structure; the scraper blade body contacts the top surface of the printer platform, the scraper blade reinforcement plate is located on the top of the scraper blade body, and there are multiple connection points between the scraper blade body and the scraper blade reinforcement plate. One of the connection points is located in the middle of the scraper blade body, and flat head screws are respectively connected by threads at positions on the scraper blade reinforcement plate close to the connection points.

[0007] Further, flat head screws are respectively arranged on both sides of the connection point located in the middle of the scraper blade body, and the flat head screws corresponding to other connection points are close to the middle of the scraper blade body.

[0008] Further, the connection points are connected by bolts, and the flat head screws are used as the top pressure parts.

[0009] Further, guiding inclined surfaces are respectively provided on both sides of the above-mentioned scraper reinforcing plate, and the guiding inclined surfaces are flush with the cutting-edge inclined surfaces of the scraper blade body.

[0010] Further, the above-mentioned supporting structure includes a connecting plate in a Z shape. The top of the connecting plate is horizontally arranged and connected to the end of the scraper structure. The bottom of the connecting plate is horizontally arranged and connected to the driving structure through a plurality of connecting members.

[0011] Further, the above-mentioned driving structure includes two moving components respectively connected to the supporting structure and a driving component for driving the two moving components to move synchronously. The moving component includes a driving wheel and a driven wheel respectively arranged at the bottoms of both ends of the printer platform, a belt connecting the driving wheel and the driven wheel, a slide rail arranged at the bottom of the printer platform, a slider slidably matched with the slide rail, and a support plate connected to the slider and used for connecting to the connecting plate. A belt pressing block is arranged between the support plate and the slider, and the belt is fixed between the slider and the belt pressing block.

[0012] Further, the above-mentioned connecting member is a screw. The screw passes through the connecting plate and is threadedly connected to the support plate. A compression spring is sleeved on the connecting member, and both ends of the compression spring are respectively in contact with the support plate and the connecting plate.

[0013] Further, the above-mentioned driving component includes a driving member, a driving wheel connected to the driving member, and a first linkage rod connected to the driving wheel. Both ends of the first linkage rod are respectively connected to the driving wheels of the two moving components, and a second linkage rod is connected between the driven wheels of the two moving components.

[0014] Further, the above-mentioned driving member and the driving wheel are connected by a belt or a gear.

[0015] Further, a photoelectric coupler baffle is connected to the bottom of one of the connecting plates, and photoelectric couplers are respectively arranged at both ends of the bottom of the printer platform and are matched with the photoelectric coupler baffle.

[0016] The present invention has the following beneficial effects:

[0017] (1) In the present invention, a scraper reinforcing plate is connected to the scraper blade body, and a plurality of connection points are formed at the connection positions. A pressing member is arranged near the connection points. After the scraper blade body is deformed, the deformation of the scraper blade body is adjusted through the pressing member, so as to ensure that the scraper can work effectively, extend the service life of the scraper, reduce the frequency of replacing the scraper due to the deformation of the scraper, and reduce the maintenance cost of 3D printing.

[0018] (2) The present invention connects a blade reinforcement plate to the blade body. After the blade body and the blade reinforcement plate are connected together, the cross-sectional area of ​​the overall structure can be increased, thereby improving the overall rigidity and the bearing capacity of the entire structure. When the blade body is subjected to a larger load, it can still maintain a smaller deformation, significantly improving the deformation resistance of the blade, extending the service life of the blade, reducing the frequency of replacing the blade due to blade deformation, and reducing the maintenance cost of 3D printing. At the same time, the blade can scoop up the model more stably and accurately, thereby improving the success rate and product quality of 3D printing, reducing model damage and printing failure caused by blade problems, and improving production efficiency.

[0019] (3) The connecting plate of the present invention is connected to the driving structure through a connecting piece, and provides a preload force for the shovel blade through a compression spring, while providing a buffer for the shovel blade during operation. The position of the connecting piece is adjustable, so that the compression degree of the compression spring can be adjusted, and thus the preload force of the shovel blade can be adjusted.

[0020] (4) The driving assembly of the present invention drives the two moving assemblies to move synchronously, thereby driving the two ends of the shovel to move synchronously, ensuring stable movement of the shovel. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front structural schematic diagram of a 3D printer unloading device with an adjustable blade according to the present invention;

[0022] Figure 2 It is a schematic diagram of the back structure of the 3D printer unloading device with adjustable blade of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the scraper structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the connection structure between the scraper structure and the support structure of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the driving structure of the present invention;

[0026] Figure 6 for Figure 5 Enlarged view of part A.

[0027] In the figure: 10-shovel blade structure; 11-shovel blade body; 12-shovel blade reinforcement plate; 13-connection point; 14-top pressure piece; 15-guide slope; 20-driving structure; 21-moving component; 22-driving component; 30-supporting structure; 31-connecting plate; 32-connecting piece; 33-compression spring; 34-optical coupling baffle; 35-optical coupling; 211-driving wheel; 212-driven wheel; 213-belt; 214-slide rail; 215-slider; 216-support plate; 217-belt pressure block; 221-driving piece; 222-driving wheel; 223-first linkage rod; 224-second linkage rod. DETAILED DESCRIPTION

[0028] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0029] Please refer to Figure 1 and Figure 2 The present embodiment provides a 3D printer unloading device with an adjustable scraper, comprising: a scraper structure 10 disposed on the top of the printer platform and a driving structure 20 disposed on the bottom of the printer platform, and the two ends of the scraper structure 10 are respectively connected to the driving structure 20 through a supporting structure 30. The scraper structure 10 is used to scrape off the structure on the printer platform, the driving structure 20 is used to drive the scraper structure 10 to reciprocate, and the supporting structure 30 is used to connect the two ends of the scraper structure 10 to the driving structure 20 respectively.

[0030] Please refer to Figure 3 The blade structure 10 includes a blade body 11 and a blade reinforcement plate 12. The blade body 11 is placed horizontally on the top of the printer platform, and the blade reinforcement plate 12 overlaps the top of the blade body 11. The ends of the blade reinforcement plate 12 and the blade body 11 are connected to the corresponding support structure 30 through the same connecting bolt. After the blade body 11 and the blade reinforcement plate 12 are connected together, the cross-sectional area of ​​the overall structure can be increased, thereby improving the overall rigidity and the bearing capacity of the entire structure. When the blade body 11 is subjected to a greater load, it can still maintain a small deformation, significantly improve the deformation resistance of the blade, extend the service life of the blade, reduce the frequency of blade replacement due to blade deformation, and reduce the maintenance cost of 3D printing. At the same time, the blade can scoop the model more stably and accurately, improve the success rate and product quality of 3D printing, reduce model damage and printing failure caused by blade problems, and improve production efficiency.

[0031] There are also a plurality of connection points 13 provided between the scraper reinforcement plate 12 and the scraper blade body 11. The connection points 13 are connection points formed by connecting with bolts or screws. One of the connection points 13 is located at the middle position of the scraper blade body 11. Pressure members 14 are respectively connected by threads at positions on the scraper reinforcement plate 12 close to the connection points 13. After the scraper blade body 11 is deformed, the deformation of the scraper blade body 11 is adjusted by the pressure members 14, so as to ensure that the scraper can work effectively, extend the service life of the scraper, reduce the frequency of replacing the scraper due to the deformation of the scraper, and reduce the maintenance cost of 3D printing.

[0032] In this embodiment, pressure members 14 are respectively provided on both sides of the connection point 13 located in the middle of the scraper blade body 11. The pressure members 14 corresponding to other connection points 13 are closer to the middle part of the scraper blade body 11. Since the force-bearing position of the scraper blade body 11 during work is closer to its middle position, this structure can effectively adjust the deformation of the scraper blade body 11. In this embodiment, the pressure members 14 are flat head screws. Obviously, the pressure members 14 can also adopt any structure or component provided with an external thread and capable of pressing the scraper blade body 11.

[0033] In this embodiment, in order to facilitate the removal of the structure, guiding inclined surfaces 15 are respectively provided on both sides of the scraper reinforcement plate 12, and the guiding inclined surfaces 15 are flush with the blade inclined surfaces on both sides of the scraper blade body 11.

[0034] Please refer to Figure 4 , the support structure 30 includes a connecting plate 31 in a Z shape. The top of the connecting plate 31 is horizontally arranged and fixedly connected with the ends of the scraper blade body 11 and the scraper reinforcement plate 12 together. The bottom of the connecting plate 31 is also horizontally arranged and connected with the driving structure 20 through a plurality of connecting members 32.

[0035] Please refer to Figures 4 to 6 , the driving structure 20 includes two moving components 21 and a driving component 22 for driving the two moving components 21 to move synchronously. The two moving components 21 respectively correspond to both ends of the scraper structure 10, and the moving direction is along the longitudinal direction of the printer platform, so as to drive the scraper structure 10 to move longitudinally along the printer platform. The moving component 21 includes a driving wheel 211 and a driven wheel 212 respectively arranged at the bottoms of both ends of the printer platform, a belt 213 connecting the driving wheel 211 and the driven wheel 212, a slide rail 214 arranged at the bottom of the printer platform, a slider 215 slidably matched with the slide rail 214, and a support plate 216 connected with the slider 215 and used for connecting with the connecting plate 31. The support plate 216 is in a U shape, and a belt pressing block 217 is arranged inside it. The belt 213 is fixed between the slider 215 and the belt pressing block 217. In this embodiment, in order to prevent the belt pressing block 217 from slipping with the belt 213, a plurality of conical spikes are arranged at the position where the belt pressing block 217 contacts the belt 213.

[0036] In this embodiment, the connecting member 32 is a screw rod. The top end of the screw rod passes through the connecting plate 31 and is threadedly connected to the support plate 216. At the same time, a compression spring 33 that always maintains a compressed state is sleeved on the connecting member 32. The two ends of the compression spring 33 are respectively in contact with the support plate 216 and the connecting plate 31. The compression spring 33 provides a pre-tightening force for the scraper, and at the same time provides buffering for the scraper during the working process. Moreover, the position of the connecting member 32 is adjustable, so that the compression degree of the compression spring 33 can be adjusted, that is, the pre-tightening force of the scraper can be adjusted.

[0037] The driving assembly 22 includes a driving member 221, a driving wheel 222 connected to the driving member 221, and a first linkage rod 223 connected to the driving wheel 222. The driving member 221 is a motor, which is installed at the bottom of the printer platform. The driving wheel 222 and the driving member 221 can be connected by a belt or a gear. The two ends of the first linkage rod 223 are respectively connected to the driving wheels 211 of the two moving assemblies 21 to achieve synchronous movement between the two driving wheels 211. In addition, in order to better achieve synchronous movement, a second linkage rod 224 is connected between the driven wheels 212 of the two moving assemblies 21 to ensure synchronous movement between the two driven wheels 212, so as to ensure that both ends of the scraper can move synchronously, enable the scraper to operate stably, and ensure the quality of the structure after scraping.

[0038] In this embodiment, a light-coupling baffle 34 is connected to the bottom of one of the connecting plates 31. Light-couplings 35 that cooperate with the light-coupling baffle 34 are respectively provided at both ends of the bottom of the printer platform, which act at the starting and ending points of the movement of the scraper to ensure that the scraper will not move excessively.

[0039] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A 3D printer unloading device with an adjustable blade, characterized in that: include: A scraper structure (10) arranged on the top of the printer platform and a drive structure (20) arranged on the bottom of the printer platform, wherein both ends of the scraper structure (10) are connected to the drive structure (20) via support structures (30) respectively; The scraper blade structure (10) comprises a scraper blade body (11) and a scraper blade reinforcement plate (12) both connected to the support structure (30); the scraper blade body (11) contacts the top surface of the printer platform, the scraper blade reinforcement plate (12) is located on the top of the scraper blade body (11), and a plurality of connection points (13) are provided between the scraper blade body (11) and the scraper blade reinforcement plate (12), one of the connection points (13) is located in the middle of the scraper blade body (11), and the positions on the scraper blade reinforcement plate (12) close to the connection points (13) are respectively connected with top pressure pieces (14) through threads.

2. The 3D printer unloading device with adjustable blade according to claim 1, characterized in that: The pressing pieces (14) are respectively provided on both sides of the connection point (13) located in the middle of the scraper blade (11), and the pressing pieces (14) corresponding to the other connection points (13) are close to the middle of the scraper blade (11).

3. The 3D printer unloading device with adjustable blade according to claim 1, characterized in that: The connection points (13) are connected by bolts, and the pressing piece (14) is a flat head screw.

4. The 3D printer unloading device with adjustable blade according to claim 1, characterized in that: Guide slopes (15) are respectively provided on both sides of the scraper blade reinforcement plate (12), and the guide slopes (15) are flush with the blade slopes of the scraper blade body (11).

5. The 3D printer unloading device with adjustable blade according to any one of claims 1 to 4, characterized in that: The support structure (30) comprises a Z-shaped connecting plate (31), the top of the connecting plate (31) being arranged horizontally and connected to the end of the scraper structure (10), and the bottom of the connecting plate (31) being arranged horizontally and connected to the driving structure (20) via a plurality of connecting members (32).

6. The 3D printer unloading device with adjustable blade according to claim 5, characterized in that: The driving structure (20) comprises two moving components (21) respectively connected to the supporting structure (30) and a driving component (22) driving the two moving components (21) to move synchronously; the moving component (21) comprises a driving wheel (211) and a driven wheel (212) respectively arranged at the bottom of both ends of the printer platform, a belt (213) connecting the driving wheel (211) and the driven wheel (212), a slide rail (214) arranged at the bottom of the printer platform, a slider (215) slidably matched with the slide rail (214), and a supporting plate (216) connected to the slider (215) and used to be connected to the connecting plate (31); a belt pressing block (217) is provided between the supporting plate (216) and the slider (215), and the belt (213) is fixed between the slider (215) and the belt pressing block (217).

7. The 3D printer unloading device with adjustable blade according to claim 6, characterized in that: The connecting member (32) is a screw rod, which passes through the connecting plate (31) and is threadedly connected to the support plate (216). A compression spring (33) is sleeved on the connecting member (32), and two ends of the compression spring (33) are respectively in contact with the support plate (216) and the connecting plate (31).

8. The 3D printer unloading device with adjustable blade according to claim 6, characterized in that: The driving assembly (22) comprises a driving member (221), a driving wheel (222) connected to the driving member (221), and a first linkage rod (223) connected to the driving wheel (222); two ends of the first linkage rod (223) are respectively connected to driving wheels (211) of two moving assemblies (21); and a second linkage rod (224) is connected between the driven wheels (212) of the two moving assemblies (21).

9. The 3D printer unloading device with adjustable blade according to claim 8, characterized in that: The driving member (221) and the driving wheel (222) are connected by a belt or a gear.

10. The 3D printer unloading device with adjustable blade according to claim 5, characterized in that: An optical coupling baffle (34) is connected to the bottom of one of the connecting plates (31), and optical couplings (35) matching the optical coupling baffle (34) are respectively provided at two ends of the bottom of the printer platform.

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