3D composite material printer

Abstract

The 3D composite material printer structurally comprises a computer, a moving machine, a printing head, an objective table, a lifting frame and a base, the computer is matched with the lifting frame and the moving machine in an electrical connection mode, the printing head is installed below the moving machine, and the lifting frame and the objective table are fixedly connected to the upper portion of the base; the computer is used for controlling the lifting frame to ascend and descend to a certain height, and then the moving machine is controlled to move left and right on the lifting frame, so that when the moving machine moves, bubbles in molten liquid are spirally crushed by means of the extruder in the middle of the moving machine, are guided into the printing head and then are sprayed out from the middle of the printing head; and the positioning arm and the guide piece are matched to overlap and uniformly smear liquid layer by layer and press and deposit the liquid to form a three-dimensional real object, so that a frizz surface can be prevented from appearing after a support is removed after a printed object is formed, and the printing effect of the machine on a 3D composite material is ensured.

Description

Technical Field

[0001] This invention relates to the field of printers, and in particular, to a 3D composite material printer. Background Technology

[0002] With the development of 3D printing technology, the requirements for forming materials are becoming increasingly stringent, particularly in terms of mechanical, biomedical, electrical, and chemical properties. However, the current state of 3D printers and forming materials is still insufficient to meet these requirements. Taking the widely used fused filament (FFF) printing as an example, commercially available forming materials are limited to a few types of plastic composites such as ABS, PLA (polylactic acid), and nylon. Furthermore, it utilizes hot-melt technology to melt the composite material into a liquid state at high temperatures, then extrudes the molten material layer by layer to form a three-dimensional object. During this process, as the computer-controlled barrel moves left and right on the crossarm to extrude the material, the liquid material, composed of multiple melted materials, will slosh around synchronously within the barrel, easily creating air bubbles. These bubbles continuously burst during material extrusion, making it difficult to achieve high-quality printing along a specific path. This results in a rough surface after the printed object is removed from its support, reducing the printing quality of the 3D composite material. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a 3D composite material printer, the structure of which includes a computer, a mobile unit, a print head, a stage, a lifting frame, and a base. The computer is electrically connected to the lifting frame and the mobile unit. The print head is installed below the mobile unit, and the lifting frame and the stage are fixedly connected to the base. The mobile machine includes an electric roller, a heating rod, an extruder, and a frame. The electric roller is electrically connected to the computer and is installed inside the frame. The frame slides on the horizontal arm of the lifting frame via the electric roller, and the extruder is located inside the frame.

[0004] As a further improvement of the present invention, the extruder includes a composite material strip, a discharge port, a guide plate, a barrel, and a screw component. The composite material strip is connected through the heating rod and the inside of the screw component. The screw component is installed inside the discharge port and between the bottom of the heating rod. The discharge port is fixedly connected between the barrel and the sleeve frame. The guide plate is sleeved and connected inside the barrel.

[0005] As a further improvement of the present invention, the spiral component includes a ball bearing, a scraper, and a rubber strip. The ball bearing is disposed on the upper and lower sides of the scraper. The scraper has a spiral structure, with its middle part spirally connected to the outside of the composite material strip, and both ends of the scraper are fixedly connected between the inside of the discharge port and the bottom of the heating rod. The rubber strip is installed on the outside of the scraper and is interference-fitted inside the guide plate.

[0006] As a further improvement of the present invention, the printhead includes a collar, a pressure cylinder, a connecting pipe, a nozzle, and an adjustment plate. The collar is fixedly connected between the pressure cylinder and the adjustment plate. The connecting pipe and the nozzle are provided in the middle of the adjustment plate. The pressure cylinder is welded to the lower part of the sleeve frame.

[0007] As a further improvement of the present invention, the nozzle includes a positioning arm, a guide, a spring, and a protective sleeve. The positioning arm has three parts located below the adjustment disc, and the bottom of the positioning arm is equipped with a guide via a spring. The protective sleeve is movably engaged inside the guide. The protective sleeve is a hollow frustum structure that is interference-fitted with the connecting pipe, and a spring is fixedly connected to the bottom edge of the protective sleeve.

[0008] As a further improvement of the present invention, the positioning arm includes a positioning plate, a limiting block, a main arm body, and a running strip. One end of the positioning plate is fixedly connected to the tip of the main arm body, and the other end of the positioning plate is slidably fitted under the adjustment disc. The main arm body is a three-dimensional triangular pyramid structure, and its bottom is hinged to the back of the guide member through the limiting block and a spring. A running strip is welded to the inclined side of the main arm body. The running strip is interference-fitted inside the limiting block. The limiting block is a flexible structure that can be extended to a certain size.

[0009] As a further improvement of the present invention, the adjustment disc includes a guide rail and a disc body. Three guide rails are provided on the vertical edge surface of the disc body, and a locking plate is slidably fitted below the guide rails.

[0010] As a further improvement of the present invention, the guide includes a telescopic fan, an output nozzle, a ring, and a slanted pressure plate. The telescopic fan and the slanted pressure plate are sleeved and connected to the outside of the output nozzle, and the telescopic fan and the slanted pressure plate are movably engaged inside the ring. The upper part of the ring is fixedly connected to a limiting block, and the inside of the ring is interference-fitted with the telescopic fan and the slanted pressure plate on the conical outer surface of the protective sleeve. Beneficial effects

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention utilizes a computer-controlled lifting frame to raise and lower to a certain height, and then controls the moving machine to move left and right on the lifting frame. During the movement of the moving machine, the extruder in the middle spirals and crushes the air bubbles in the molten liquid, and then guides it into the inside of the print head. It is then sprayed out from the middle of the print head. With the help of the positioning arm and guide component, the liquid is layered and spread evenly, and pressed and deposited to form a three-dimensional object. This avoids the appearance of a rough surface after the support is removed after the printed object is formed, and ensures the printing effect of the machine on 3D composite materials.

[0012] The invention features a helical structure in the scraper that gradually expands outward when pressed down by the heating rod. This causes the outer rubber strip to slide spirally on the inner wall of the guide plate, allowing it to roll up and down to carry the liquid. In addition, the rollers crush and expel air bubbles from the liquid, preventing air bubbles from damaging the overall texture of the printed material.

[0013] This invention uses the main arm to support the descending protective sleeve under the disc body. Simultaneously, it adjusts the angle on the guide component with the limit block as the fulcrum, and slides radially on the equidistant and orderly textured surface of the guide rail, transmitting a certain amount of vibration to the guide component in the middle, so that the output nozzle can output an equal amount of liquid. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a 3D composite material printer according to the present invention.

[0015] Figure 2 This is a cross-sectional structural diagram of the mobile device of the present invention.

[0016] Figure 3 This is a schematic diagram of the planar structure of the extruder of the present invention.

[0017] Figure 4 This is a three-dimensional structural diagram of the spiral component of the present invention.

[0018] Figure 5 This is a schematic diagram of the planar structure of the printhead of the present invention.

[0019] Figure 6 This is a schematic diagram of the planar structure of the nozzle of the present invention.

[0020] Figure 7 This is a bottom view of the positioning arm structure of the present invention.

[0021] Figure 8 This is a bottom view of the guide component of the present invention.

[0022] In the diagram: Computer-3, Mobile Unit-1, Print Head-2, Platform-4, Lifting Frame-6, Base-5, Electric Roller-1q, Heating Rod-1w, Extruder-1e, Frame-1r, Composite Material Strip-e1, Discharge Port-e2, Guide Plate-e3, Material Cylinder-e4, Spiral Component-e5, Ball Bearing-e51, Scraper-e52, Adhesive Strip-e53, Collar-2a, Pressure Cylinder-2s, Connecting Pipe-2d, Nozzle-2f, Adjusting Disc-2g, Positioning Arm-f1, Guide Component-f2, Spring-f3, Protective Cover-f4, Positioning Plate-f11, Limiting Block-f12, Main Arm Body-f13, Running Bar-f14, Guide Rail-g1, Disc Body-g2, Telescopic Fan-f21, Output Nozzle-f22, Ring-f23, Inclined Pressure Plate-f24. Implementation

[0023] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0024] like Figures 1-4 As shown, the present invention provides a 3D composite material printer, the structure of which includes a computer 3, a mobile unit 1, a print head 2, a stage 4, a lifting frame 6, and a base 5. The computer 3 is electrically connected to the lifting frame 6 and the mobile unit 1. The print head 2 is installed below the mobile unit 1. The lifting frame 6 and the stage 4 are fixedly connected to the base 5. The mobile machine 1 includes an electric roller 1q, a heating rod 1w, an extruder 1e, and a frame 1r. The electric roller 1q is electrically connected to the computer 3 and is installed inside the frame 1r. The frame 1r is slidably fitted above the horizontal arm of the lifting frame 6 via the electric roller 1q, and the extruder 1e is provided inside the frame 1r.

[0025] The extruder 1e includes a composite material strip e1, an outlet e2, a guide plate e3, a barrel e4, and a screw e5. The composite material strip e1 is connected through the heating rod 1w and the inside of the screw e5. The screw e5 is installed inside the outlet e2 and between the bottom of the heating rod 1w. The outlet e2 is fixedly connected between the barrel e4 and the sleeve 1r. The guide plate e3 is sleeved inside the barrel e4. The inner wall of the guide plate e3 is inclined and has a certain angle, which facilitates the control of the melted liquid by matching with the screw e5, and efficiently defoams downward and squeezes out the liquid to avoid liquid residue.

[0026] The spiral component e5 includes a ball bearing e51, a scraper e52, and a rubber strip e53. The ball bearing e51 is located on the upper and lower sides of the scraper e52. The scraper e52 has a spiral structure, with its middle part spirally connected to the outside of the composite material strip e1. Both ends of the scraper e52 are fixedly connected between the inside of the outlet e2 and the bottom of the heating rod 1w. The rubber strip e53 is installed on the outside of the scraper e52 and is interference-fitted inside the guide plate e3. As the spiral structure of the scraper e52 expands outward under pressure, the rubber strip e53 slides along the inner wall of the guide plate e3, and together with the ball bearing e51, it crushes and discharges air bubbles in the liquid.

[0027] Based on the above embodiments, the specific working principle is as follows: Computer 3 controls the lifting frame 6 to rise and fall to a certain height according to the height of the printed material. Then, it controls the electric roller 1q to drive the frame 1r to move left and right on the lifting frame 6. The heating rod 1w in the middle of the frame 1r of the moving machine 1 pulls the composite material strip e1 down in real time and heats and melts the composite material strip e1 at the same time, so that the composite material strip e1 melts into liquid and flows into the material cylinder e4. During this process, the heating rod 1w presses down on the spiral scraper e52, so that the scraper e52 is flattened at the same time. The upper and lower fixed ball bearings e51 between the composite material strip e1 and the material cylinder e4 expand outward in a spiral at the same time, so that the outer rubber strip e53 is pressed against the inside of the material cylinder e4 to form a sealed space. The spiral structure of the flattened scraper e5 will come closer to each other, pressurizing the melted liquid and crushing the air bubbles in the liquid with the help of the ball bearings e51 on its surface. Then, the liquid is efficiently and directionally spirally transported and discharged into the print head 2, avoiding liquid residue and agitation of air bubbles. Example

[0028] like Figures 5-8 As shown, based on Embodiment 1, the present invention combines the following structural components: the print head 2 includes a collar 2a, a pressure cylinder 2s, a connecting pipe 2d, a nozzle 2f, and an adjusting plate 2g. The collar 2a is fixedly connected between the pressure cylinder 2s and the adjusting plate 2g. The adjusting plate 2g has the connecting pipe 2d and the nozzle 2f in the middle. The pressure cylinder 2s is welded to the bottom of the frame 1r.

[0029] The nozzle 2f includes a positioning arm f1, a guide member f2, a spring f3, and a protective sleeve f4. The positioning arm f1 has three parts located below the adjustment disc 2g, and the guide member f2 is installed at the bottom of the positioning arm f1 via the spring f3. The protective sleeve f4 is movably engaged inside the guide member f2. The protective sleeve f4 is a hollow frustum structure that is interference-fitted with the connecting pipe 2d, and the bottom edge of the protective sleeve f4 is fixedly connected to the spring f3.

[0030] The positioning arm f1 includes a positioning plate f11, a limiting block f12, a main arm body f13, and a running strip f14. One end of the positioning plate f11 is fixedly connected to the tip of the main arm body f13, and the other end of the positioning plate f11 is slidably fitted under the adjusting disc 2g. The main arm body f13 is a three-dimensional triangular pyramid structure, and its bottom is hinged to the back of the guide member f2 through the limiting block f12 and the spring f3. The running strip f14 is welded to the inclined side of the main arm body f13. The running strip f14 is interference-fitted inside the limiting block f12. The limiting block f12 is a flexible structure that can be extended to a certain size, and can run against the running strip f14 within a certain range to limit and stop the swing of the main arm body f13.

[0031] The adjustment disc 2g includes a guide rail g1 and a disc body g2. The guide rail g1 has three rails on the vertical edge surface of the disc body g2, and a positioning plate f11 is slidably fitted below the guide rail g1, providing a space for angle adjustment of the positioning plate f11 and the main arm body f13. The texture on its surface is equidistant and orderly, and when the positioning plate f11 and the main arm body f13 sway, it can transmit a certain vibration to the guide member f2 in the middle.

[0032] The guide component f2 includes a telescopic fan f21, an output nozzle f22, a circular ring f23, and a slanted pressure plate f24. The telescopic fan f21 and the slanted pressure plate f24 are sleeved and connected to the outside of the output nozzle f22, and the telescopic fan f21 and the slanted pressure plate f24 are movably engaged inside the circular ring f23. The upper part of the circular ring f23 is fixedly connected to the limiting block f12, and the inside of the circular ring f23 is interference-fitted with the telescopic fan f21 and the slanted pressure plate f24 on the conical outer surface of the protective sleeve f4.

[0033] Based on the above embodiments, the specific working principle is as follows: After the pressurizing cylinder 2s receives the liquid from the outlet e2, it pressurizes and pushes the liquid from the connecting pipe 2d to the inside of the protective sleeve f4. This allows the protective sleeve f4 to be subjected to gravity, pressing down on the main arm body f13. The tension in the protective sleeve f4 also pulls on the spring f3, causing the spring f3 to pull on the bottom of the main arm body f13. The main arm body f13, using the limiting block f12 as a fulcrum, tilts within its bent structure, leaning towards the outside of the protective sleeve f4. Within a certain range, the protective sleeve f4 is clamped and fixed inside the ring f23, allowing the protective sleeve f4 to concentrate the liquid in a fixed position and output the liquid directly to the outlet nozzle f22. The main arm body f13 then swings... During the retraction process, the machine slides radially along the guide rail g1 under the disc g2 using the pointed locking plate f11. As it slides, it agitates the surface texture of the guide rail g1, generating a certain vibration to the ring f23. This facilitates the downward opening of the telescopic fan f21 and the inclined pressure plate f24 inside the ring f23 along the frustum-shaped structure of the protective sleeve f4. The arc-shaped surface of the inclined pressure plate f24 protrudes and abuts against the outside of the output nozzle f22, thereby spreading and evenly mixing the liquid output from the output nozzle f22, and pressing it to deposit and form a three-dimensional object. This prevents the appearance of a rough surface after the printed object is removed from the support, ensuring the printing effect of the machine on 3D composite materials.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A 3D composite material printer, characterized in that: Its structure includes a computer (3), a mobile unit (1), a print head (2), a platform (4), a lifting frame (6), and a base (5). The computer (3) is electrically connected to the lifting frame (6) and the mobile unit (1). The print head (2) is installed below the mobile unit (1). The lifting frame (6) and the platform (4) are fixedly connected above the base (5). The mobile machine (1) includes an electric roller (1q), a heating rod (1w), an extruder (1e), and a frame (1r). The electric roller (1q) is electrically connected to the computer (3), and the electric roller (1q) is installed inside the frame (1r). The frame (1r) is slidably fitted above the horizontal arm of the lifting frame (6) through the electric roller (1q), and the extruder (1e) is provided inside the frame (1r).

2. A 3D composite material printer according to claim 1, characterized in that: The extruder (1e) includes a composite material strip (e1), an outlet (e2), a guide plate (e3), a barrel (e4), and a screw (e5). The composite material strip (e1) is connected through the heating rod (1w) and the inside of the screw (e5). The screw (e5) is installed inside the outlet (e2) and between the bottom of the heating rod (1w). The outlet (e2) is fixedly connected between the barrel (e4) and the sleeve (1r). The guide plate (e3) is sleeved inside the barrel (e4).

3. A 3D composite material printer according to claim 2, characterized in that: The spiral component (e5) includes a ball bearing (e51), a scraper (e52), and a rubber strip (e53). The ball bearing (e51) is located on the upper and lower sides of the scraper (e52). The middle part of the scraper (e52) is spirally connected to the outside of the composite material strip (e1), and both ends of the scraper (e52) are fixedly connected between the inside of the outlet (e2) and the bottom of the heating rod (1w). The rubber strip (e53) is installed on the outside of the scraper (e52) and is interference-fitted inside the guide plate (e3).

4. A 3D composite material printer according to claim 1, characterized in that: The printhead (2) includes a collar (2a), a pressure cylinder (2s), a connecting pipe (2d), a nozzle (2f), and an adjustment disc (2g). The collar (2a) is fixedly connected between the pressure cylinder (2s) and the adjustment disc (2g). The adjustment disc (2g) has a connecting pipe (2d) and a nozzle (2f) in the middle. The pressure cylinder (2s) is welded to the bottom of the sleeve frame (1r).

5. A 3D composite material printer according to claim 4, characterized in that: The nozzle (2f) includes a positioning arm (f1), a guide (f2), a spring (f3), and a protective sleeve (f4). The positioning arm (f1) is located below the adjusting plate (2g), and the guide (f2) is installed at the bottom of the positioning arm (f1) via the spring (f3). The protective sleeve (f4) is movably engaged inside the guide (f2). The protective sleeve (f4) is a hollow frustoconical structure that is interference-fitted with the connecting pipe (2d), and the bottom edge of the protective sleeve (f4) is fixedly connected to the spring (f3).

6. A 3D composite material printer according to claim 5, characterized in that: The positioning arm (f1) includes a positioning plate (f11), a limiting block (f12), a main arm body (f13), and a running strip (f14). One end of the positioning plate (f11) is fixedly connected to the tip of the main arm body (f13), and the other end of the positioning plate (f11) is slidably fitted under the adjusting plate (2g). The bottom of the main arm body (f13) is hinged to the back of the guide member (f2) through the limiting block (f12) and the spring (f3). The running strip (f14) is welded to the inclined side of the main arm body (f13), and the running strip (f14) is interference-fitted inside the limiting block (f12).

7. A 3D composite material printer according to claim 4, characterized in that: The adjustment disc (2g) includes a guide rail (g1) and a disc body (g2). The guide rail (g1) has three rails on the surface of the disc body (g2), and a locking plate (f11) is slidably fitted under the guide rail (g1).

8. A 3D composite material printer according to claim 5, characterized in that: The guide component (f2) includes a telescopic fan (f21), an output nozzle (f22), a ring (f23), and a slanted pressure plate (f24). The telescopic fan (f21) and the slanted pressure plate (f24) are sleeved and connected to the outside of the output nozzle (f22), and the telescopic fan (f21) and the slanted pressure plate (f24) are movably engaged inside the ring (f23). The upper part of the ring (f23) is fixedly connected to a limiting block (f12), and the inside of the ring (f23) is interference-fitted with the telescopic fan (f21) and the slanted pressure plate (f24) on the outer surface of the protective sleeve (f4).

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