A 3D printing device capable of precise temperature control

Abstract

The utility model provides a kind of 3D printing device of accurate temperature control, it is related to 3D printing technical field, and it includes: 3D printer, 3D printer is connected with temperature control printing platform, the nozzle side surface of 3D printer is equipped with infrared thermometer, four spiral push cylinders are fixedly connected in temperature control printing platform inside, one column air outlet is respectively set in temperature control printing platform upper surface four edges, 3D printing device in the utility model has temperature control function, by the cooperation of temperature control printing platform inside flow guide fan, air heating wire, heated air is sent upwards by air outlet, the upper area of temperature control printing platform is heated, avoid the situation that the cooling speed of plastic heating extrusion after 3D printing device nozzle is influenced by low temperature environment, avoid the situation that the flowability of material is reduced due to cooling too fast, interlayer adhesion is weak, heating effective area can be adjusted according to the height change of nozzle in the operation process of 3D printer, and effective temperature control range is adjusted according to printing process.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing technology, and in particular to a 3D printing device with precise temperature control. Background Technology

[0002] 3D printing is a rapid prototyping technology that creates three-dimensional objects by slicing digital models into layers and stacking materials one by one. It can achieve rapid and personalized manufacturing of complex structures without the need for traditional molds and is widely used in prototyping, medical implants, aerospace components, educational innovation and other fields.

[0003] Traditional printer printheads lack insulation in their working area. When used in low-temperature environments, the cooling rate of the plastic filaments after being heated and extruded by the printhead is accelerated due to the low ambient temperature. This reduces the fluidity of the material, making extrusion difficult, resulting in weak interlayer adhesion, low print strength, and a tendency for material shortages and filament breakage, thus affecting the print quality of the model. Utility Model Content

[0004] This invention provides a 3D printing device with precise temperature control to solve the problem that traditional printer nozzles lack insulation structures in their working area. When used in low-temperature environments, the nozzle heats and extrudes the plastic filaments, which then cools down faster, reducing material fluidity. This leads to difficulties in extrusion, weak interlayer adhesion, low strength of printed parts, and a tendency for material shortages and filament breakage, all of which affect the printing quality of the model.

[0005] This utility model provides a 3D printing device with precise temperature control, specifically including: a 3D printer, a temperature-controlled printing stage connected to the 3D printer, an infrared thermometer installed on the side of the nozzle of the 3D printer, four spiral push cylinders fixedly connected inside the temperature-controlled printing stage, a row of air jets opened at the four edges of the upper surface of the temperature-controlled printing stage, a printing stage base plate fixedly connected to the bottom of the temperature-controlled printing stage, a circular air inlet penetrating through the center of the printing stage base plate, an air heating wire connected inside the air inlet, an air guide plate support fixedly connected at the four apex positions inside the temperature-controlled printing stage, two parallel airflow guide plates provided below each row of air jets, the upper edge of the airflow guide plate is hinged to the air guide plate support, the lower edges of two adjacent airflow guide plates are hinged together to parallel support plates, and the push rod end of the spiral push cylinder is attached to the inner surface of the airflow guide plate near the center of the temperature-controlled printing stage.

[0006] Furthermore, the inner wall of the air inlet is fixedly connected with an inlet inner edge of an annular structure.

[0007] Furthermore, a circular air intake filter plate is installed inside the air intake opening, and the air intake filter plate is fixedly connected to the inner edge of the inlet by screws.

[0008] Furthermore, a temperature regulating cavity is provided above the inner edge of the inlet by a cylindrical enclosure, and a rectangular circumferential nozzle is provided through the outer cylindrical enclosure of the temperature regulating cavity.

[0009] Furthermore, the air heating wire is installed inside the temperature control chamber, and the air heating wire is located above the air intake filter plate. A flow guide fan is provided inside the temperature control chamber, and the flow guide fan is located above the air heating wire.

[0010] Furthermore, two reset top springs are provided between the airflow guide plate and the inner wall of the temperature-controlled printing table. The two ends of the reset top springs are respectively fixedly connected to the inner wall of the temperature-controlled printing table and the surface of the airflow guide plate away from the center of the temperature-controlled printing table.

[0011] This invention provides a 3D printing device with precise temperature control, which has the following beneficial effects: The 3D printing device of this invention has a temperature control function. Through the cooperation of the internal air guide fan and air heating wire of the temperature-controlled printing table, heated air is delivered upward through the jet nozzle to heat the area above the temperature-controlled printing table. This avoids the situation where the nozzle of the 3D printing device is affected by the low temperature environment, which would cause the plastic to cool down faster after heating and extrusion. It also avoids the situation where the material fluidity is reduced and the interlayer adhesion is weak due to excessively rapid cooling.

[0012] Furthermore, by combining the spiral pusher cylinder with the airflow guide plate, the direction of the airflow guide plate can be adjusted, thereby adjusting the direction of the heated airflow. The effective heating area can be adjusted according to the change in nozzle height during the operation of the 3D printer, and the effective temperature control range can be adjusted according to the printing process.

[0013] In addition, while heating the air, it also heats the temperature-controlled printing table, reducing the temperature difference between the material and the temperature-controlled printing table during the printing process. This prevents the printed model from deforming due to excessive temperature difference between the plastic and the temperature-controlled printing table, reduces the cooling and solidification rate of the plastic, improves the fluidity of the material during printing, and increases interlayer adhesion. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0015] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0016] In the attached diagram: Figure 1 A schematic diagram of the overall structure of this application is shown; Figure 2 A schematic diagram of the structure of the bottom of the temperature-controlled printing stage of this application is shown; Figure 3A schematic diagram of the internal structure of the temperature-controlled printing station of this application is shown; Figure 4 A schematic diagram of the airflow guide plate of this application is shown; Figure 5 A schematic diagram of the parallel support plate of this application is shown; Figure 6 A schematic diagram of the temperature control cavity of this application is shown; Figure 7 This application shows Figure 1 A magnified structural diagram of point A in the middle.

[0017] Figure label: 1. 3D printer; 2. Temperature-controlled printing table; 201. Air nozzle; 202. Printing table base plate; 203. Air inlet; 204. Inlet inner edge; 205. Air inlet filter plate; 206. Temperature control chamber; 207. Circumferential nozzle; 3. Infrared thermometer; 4. Spiral pusher cylinder; 5. Air guide plate support; 6. Airflow guide plate; 601. Reset top spring; 7. Parallel support plate; 8. Air heating wire; 9. Guide fan. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] Example 1: Please refer to Figures 1 to 7 : This invention proposes a 3D printing device with precise temperature control, comprising: a 3D printer 1, a temperature-controlled printing stage 2 connected to the 3D printer 1, an infrared thermometer 3 mounted on the side of the nozzle of the 3D printer 1, four spiral push cylinders 4 fixedly connected inside the temperature-controlled printing stage 2, a row of air nozzles 201 respectively opened at the four edges of the upper surface of the temperature-controlled printing stage 2, a printing stage base plate 202 fixedly connected to the bottom of the temperature-controlled printing stage 2, a circular air inlet 203 penetrating through the center of the printing stage base plate 202, an air heating wire 8 connected inside the air inlet 203, and an air guide plate support 5 fixedly connected at the four apex positions inside the temperature-controlled printing stage 2, below each row of air nozzles 201. Two parallel airflow guide plates 6 are provided. The upper edge of the airflow guide plate 6 is hinged to the air guide plate support 5, and the lower edges of the two adjacent airflow guide plates 6 are hinged to the parallel support plate 7. The push rod end of the spiral push cylinder 4 is attached to the inner surface of the airflow guide plate 6 near the center of the temperature-controlled printing stage 2. Through the cooperation of the internal airflow fan 9 and air heating wire 8 of the temperature-controlled printing stage 2, the heated air is delivered upward through the jet nozzle 201 to heat the area above the temperature-controlled printing stage 2. This avoids the 3D printing device nozzle from being affected by the low temperature environment, which would reduce the fluidity of the material, make the material difficult to extrude, weaken the interlayer adhesion, and result in low strength of the printed parts. It would also prevent the occurrence of material shortage and filament breakage, which would affect the printing quality of the model.

[0020] In this embodiment, an annular inner edge 204 is fixedly connected to the inner wall of the air inlet 203. A circular air filter plate 205 is installed inside the opening of the air inlet 203. The air filter plate 205 is fixedly connected to the inner edge 204 of the inlet by screws. The air filter plate 205 filters the air entering the temperature-controlled printing station 2, intercepts dust and other impurities in the air, and avoids dust and other impurities from affecting printing.

[0021] In this embodiment, a temperature regulating cavity 206 is provided above the inner edge 204 of the inlet by a cylindrical enclosure. A rectangular circumferential nozzle 207 is provided through the outer cylinder of the temperature regulating cavity 206. An air heating wire 8 is installed inside the temperature regulating cavity 206 and is located above the air intake filter plate 205. A guide fan 9 is provided inside the temperature regulating cavity 206 and is located above the air heating wire 8. By the action of the guide fan 9, the surrounding air pressure is changed, so that air enters the temperature regulating cavity 206 through the air intake port 203, is heated by the air heating wire 8, and flows into the temperature-controlled printing table 2 through the circumferential nozzle 207. It is then sprayed outward to the vicinity of the printer nozzle through the airflow guide plate 6.

[0022] In Example 2, based on Example 1, two reset top springs 601 are provided between the airflow guide plate 6 and the inner wall of the temperature-controlled printing stage 2. The two ends of the reset top springs 601 are fixedly connected to the inner wall of the temperature-controlled printing stage 2 and the surface of the airflow guide plate 6 away from the center of the temperature-controlled printing stage 2, respectively. Under normal conditions, the reset top springs 601 push the airflow guide plate 6 towards the center of the temperature-controlled printing stage 2. Through the cooperation of the spiral push cylinder 4 and the airflow guide plate 6, the direction of the airflow guide plate 6 can be adjusted, thereby adjusting the direction of the heated airflow. The effective heating area can be adjusted according to the height change of the nozzle during the operation of the 3D printer, and the effective temperature control range can be adjusted according to the printing process to achieve the adjustment of the hot air jet direction.

[0023] The working principle of this embodiment is as follows: When the 3D printer 1 is working, the air heating wire 8 and the air guide fan 9 are turned on. The air guide fan 9 guides air from the bottom of the temperature-controlled printing table 2 through the air inlet 203 into the temperature-controlled chamber 206, and through the air heating wire 8 to heat the air entering the temperature-controlled chamber 206. The air is then sprayed outward through the circumferential nozzle 207, and under the action of air pressure, it enters the space between the two airflow guide plates 6, and is finally sprayed outward through the jet nozzle 201. The slope of the airflow guide plates 6 can be adjusted by the spiral push cylinder 4 to adjust the direction of air jetting. Hot air is delivered upwards through the jet nozzle 201 to heat the area above the temperature-controlled printing stage 2. This prevents the nozzle of the 3D printing device from being affected by the low temperature environment, which would reduce the fluidity of the material, making it difficult to extrude, resulting in weak interlayer adhesion, low strength of the printed parts, and easy occurrence of material shortage and filament breakage, thus affecting the printing quality of the model. As the printing progresses, during the slow upward movement of the nozzle, the spiral push cylinder 4 is controlled to contract, so that the airflow guide plate 6 slowly moves vertical under the thrust of the reset top spring 601, adjusting the jet direction to move upwards to achieve the nozzle tracking effect.

[0024] The following points should be noted in this article: 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in a general design.

[0025] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0026] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A 3D printing device with precise temperature control, comprising: A 3D printer (1) is connected to a temperature-controlled printing table (2). The 3D printer (1) is characterized by having an infrared thermometer (3) installed on the side of the nozzle; four spiral push cylinders (4) fixedly connected inside the temperature-controlled printing table (2); a row of air jets (201) opened at the four edges of the upper surface of the temperature-controlled printing table (2); a printing table base plate (202) fixedly connected to the bottom of the temperature-controlled printing table (2); and a circular air inlet (203) penetrating through the center of the printing table base plate (202). An air heating wire (8) is connected inside the air inlet (203). An air guide plate support (5) is fixedly connected to each of the four top corners inside the temperature control printing table (2). Two parallel airflow guide plates (6) are provided below each row of air jets (201). The upper edge of the airflow guide plate (6) is hinged to the air guide plate support (5). The lower edges of two adjacent airflow guide plates (6) are hinged to a parallel support plate (7). The push rod end of the spiral push cylinder (4) is attached to the inner surface of the airflow guide plate (6) near the center of the temperature control printing table (2). 2.The 3D printing device with precise temperature control of claim 1, wherein, The inner wall of the air inlet (203) is fixedly connected to the inner edge (204) of the inlet with an annular structure. 3.The 3D printing device of claim 2, wherein The air inlet (203) has a circular air filter plate (205) installed inside the opening, and the air filter plate (205) is fixedly connected to the inner edge of the inlet (204) by screws. 4.The 3D printing device with precise temperature control of claim 3, wherein, A temperature regulating cavity (206) is provided above the inner edge (204) of the inlet by a cylindrical enclosure, and a rectangular circumferential nozzle (207) is provided through the outer cylinder of the temperature regulating cavity (206). 5.The 3D printing device with precise temperature control of claim 4, wherein, The air heating wire (8) is installed inside the temperature control cavity (206). The air heating wire (8) is located above the air intake filter plate (205). The temperature control cavity (206) is equipped with a flow guide fan (9), which is located above the air heating wire (8). 6.The 3D printing device with precise temperature control of claim 1, wherein, Two reset top springs (601) are provided between the airflow guide plate (6) and the inner wall of the temperature control printing table (2). The two ends of the reset top springs (601) are respectively fixedly connected to the inner wall of the temperature control printing table (2) and the surface of the airflow guide plate (6) away from the center of the temperature control printing table (2).

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