3D printer and printing method thereof
By using heat conduction pipes and circulation pump systems in 3D printers to regulate nozzle temperature in real time, the problem of nozzle temperature fluctuations affecting printing accuracy is solved, and more efficient temperature control and printing accuracy are achieved.
Patent Information
- Application Number
- CN202411486843.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-23
- Publication Date
- 2025-01-17
AI Technical Summary
The accuracy of 3D printers is affected by nozzle temperature control. Too low or too high temperature will affect the extrusion speed and the adhesive performance of the material, resulting in low printing accuracy.
A 3D printer is designed, using a heat conduction pipe and a circulation pump system, which monitors the nozzle temperature in real time through a temperature sensor, and uses the circulating pump to tick coolant to exchange heat and heat dissipate fins to accelerate heat dissipation, achieving accurate control of the nozzle temperature.
Effectively prevent the nozzle temperature from being too high or too low, improve the accuracy of material extrusion, reduce defective accidents caused by temperature, and improve printing accuracy and efficiency.
Smart Images
Figure CN119319678A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of 3D printers, and in particular to a 3D printer and a printing method thereof. Background Art
[0002] 3D printer technology is becoming more and more mature and popular. More and more 3D printing enthusiasts feel the unique charm of 3D printing technology. Low cost, high efficiency and high precision have won their favor. However, 3D printing accuracy has always been a headache. With the improvement of 3D printing technology, the accuracy of 3D printing is also improved as much as possible, but it can only improve the accuracy of some 3D printers. There are many factors that affect the accuracy of 3D printers: 3D printer temperature, 3D printing speed, 3D printing consumables, etc. It is very important to control the temperature of the printer nozzle, which is used to determine the bonding performance, stacking performance, and base width of the 3D printing material. Therefore, the temperature of the nozzle must be controlled appropriately. If the temperature is too low, the speed of the extruder will be affected. If the temperature of the nozzle is too high, the material will tend to change from liquid to liquid and cannot form precise filaments. These will affect the accuracy of printing. For this reason, we propose a 3D printer and a printing method thereof. Summary of the invention
[0003] The object of the present invention is to provide a 3D printer and a printing method thereof to solve the problems raised in the above background technology.
[0004] To achieve the above-mentioned object, the present invention provides the following technical solutions: a 3D printer and a printing method thereof, comprising a printing box, wherein a printer head is arranged in the printing box; The inner cavity of the printing box is provided with a working cavity, a sliding rod is transversely provided on the upper part of the working cavity, a printer head is slidably sleeved on the sliding rod, and two cooling fans are provided on the top of the rear side of the working cavity; A nozzle is provided at the bottom of the printer head, and the nozzle comprises an inner shell and an outer shell, and a heat conducting pipe is wound around the inner shell; A temperature control box is installed at the lower front part of the printer head, a temperature adjustment component is installed in the temperature control box, a temperature sensor is installed on the right side of the temperature control box, and a temperature sensor is also arranged on the left side of the nozzle.
[0005] Preferably, the heat conducting pipe is a copper pipe and is clamped along the extension arc of the inner shell; the outer shell is sleeved on the inner shell, and an installation groove corresponding to the heat conducting pipe is opened on the inner wall of the outer shell, and the heat conducting pipe is correspondingly clamped in the installation groove during installation.
[0006] Preferably, an adjustment button is provided on the front side of the temperature control box; the temperature control component includes a circulation pump, heat dissipation fins, a fan and a control mainboard, and the temperature control box is interconnected with the heat pipe; the temperature sensor is electrically connected to the control board.
[0007] Preferably, a sliding block is provided on the top of the printer head, the sliding block is sleeved on the sliding rod, a driving motor is provided in the inner cavity of the sliding block, a driving wheel is provided at one end of the driving motor close to the sliding rod, and the driving wheel is rollingly mounted on the surface of the sliding rod.
[0008] Preferably, the left and right side surfaces and the front side surface of the printing box are provided with protective glass, the protective glass is tempered glass, and the front side of the protective glass is provided with a glass door that flips up and down.
[0009] Preferably, a heat dissipation fan is provided in the middle of the front side of the printer head, and the heat dissipation fan there is arranged inwardly in the inner cavity of the printer head.
[0010] Preferably, the heat conducting pipe is filled with cooling liquid, and the heat conducting pipe and the circulation pump directly form a circulation loop.
[0011] Preferably, the heat pipes are arranged to pass through the heat dissipation fins, and the fan is correspondingly arranged at a position close to the heat dissipation fins; the temperature control box fan is hollow at a position close to the fan, so that the hot air blown out by the fan can be dissipated.
[0012] Compared with the prior art, the present invention has the following beneficial effects: This scheme aims to provide a 3D printer that can adjust the nozzle temperature. When the temperature rises, the temperature sensor on the nozzle will detect it. When the temperature detected by the temperature sensor exceeds the preset threshold, the circulation pump is started. The circulation pump pumps the coolant in the heat pipe for circulation. Since the heat pipe is wrapped around the inner shell, the heat generated on the inner shell will be exchanged with the heat pipe at the first time, thereby introducing the heat into the coolant. With the operation of the circulation pump, the heated coolant is pumped to the heat dissipation fins, where the heat is quickly dissipated through multi-layered fins and fans to achieve the purpose of rapid cooling. At the same time, the cooled coolant will again pass through the nozzle for heat exchange with the operation of the circulation pump; when the temperature of the nozzle detected by the temperature sensor is lower than the preset threshold, the temperature control box will stop the circulation pump to prevent the temperature at the nozzle from being too low and affecting the extrusion speed. Reasonable regulation can reduce the defective product accidents caused by the nozzle due to temperature. It is very efficient and can reduce the influence of temperature on material extrusion, greatly improving the accuracy of printing. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is the front view of the present invention; Figure 2It is a side view of the present invention; Figure 3 It is a schematic diagram of the printer head of the present invention; Figure 4 This is a schematic diagram of disassembling the nozzle of the present invention; Figure 5 It is a schematic diagram of the temperature control box of the present invention.
[0014] In the figure: 1 printer case, 2 working chamber, 3 sliding rod, 4 printer head, 5 cooling fan, 6 nozzle, 61 inner shell, 62 outer shell, 63 heat pipe, 7 temperature control box, 71 temperature adjustment component, 72 temperature sensor. DETAILED DESCRIPTION
[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0016] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Example
[0017] See also Figure 1-5 , the present invention provides a 3D printer and a printing method technical solution thereof: comprising a printing box 1, in which a printer head 4 is arranged; The inner cavity of the printer case 1 is provided with a working cavity 2, a sliding rod 3 is transversely provided on the upper part of the working cavity 2, a printer head 4 is slidably sleeved on the sliding rod 3, and two cooling fans 5 are provided on the top of the rear side of the working cavity 2; A nozzle 6 is provided at the bottom of the printer head 4. The nozzle 6 includes an inner shell 61 and an outer shell 62. A heat conducting pipe 63 is wound around the inner shell 61. The heat conducting pipe 63 is a copper pipe and is clamped along the extension arc of the inner shell 61. The outer shell 62 is sleeved on the inner shell 61, and a mounting groove corresponding to the heat pipe 63 is opened on the inner wall of the outer shell 61. When installing, the heat pipe 63 is correspondingly clamped in the mounting groove; A temperature control box 7 is installed at the lower front part of the printer head 4, a temperature control component 71 is installed in the temperature control box 7, a temperature sensor 72 is installed on the right side of the temperature control box 7, and a temperature sensor 72 is also provided on the left side of the nozzle 6; The front side of the temperature control box 7 is provided with an adjustment button; the temperature control component 71 includes a circulation pump, a heat dissipation fin, a fan and a control main board, and the temperature control box 7 is interconnected with the heat pipe 63; the temperature sensor 72 is electrically connected to the control board; A slide block is provided on the top of the printer head 4, and the slide block is sleeved on the slide rod 3. A driving motor is provided in the inner cavity of the slide block 3. A driving wheel is provided at one end of the driving motor close to the slide rod 3, and the driving wheel is rollingly mounted on the surface of the slide rod 3. The left and right sides and the front side of the printer case 1 are provided with protective glass; a cooling fan 5 is provided in the middle of the front side of the printer head 4; When using this solution, the designed 3D model needs to be sliced before it is imported into the 3D printer. The slicing software cuts the 3D model into a series of slices, each of which represents a cross section of the model at a certain height. These slice files contain the shape, size and height information of each layer during the printing process, as well as the type and thickness of material required for printing. Slicing software can also optimize the model to reduce printing time and material consumption; for example, the software can automatically repair minor defects in the model and adjust the model's support structure to improve printing quality and stability; The slice file needs to be imported into the 3D printer; different 3D printers may have different operation interfaces and import methods, and the user needs to operate according to the instructions of the printer; during the printing process, the nozzle 6 of the printer will stack the material layer by layer according to the information in the slice file, and gradually build a three-dimensional entity; At the same time, the driving motor drives the printer head 4 to move back and forth on the sliding rod 3, and a lifting motor is also provided on the printer head 4 to control the limited lifting and lowering of the nozzle 6 in the up and down directions to achieve relative displacement of the X-axis and the Y-axis; At the same time, the 3D printer of this solution is provided with a temperature regulating structure at the nozzle 6, and the coolant in the heat pipe 63 is regulated by the temperature control box 7 to exchange the heat at the nozzle 6; The temperature control of nozzle 6 is very important, as it determines the bonding performance, stacking performance, and base width of the 3D printing material. Therefore, the temperature of nozzle 6 must be controlled appropriately. If the temperature is too low, the speed of the extruder will be affected. If the temperature of nozzle 6 is too high, the material will tend to become liquid and cannot form precise filaments. When the temperature rises, the temperature sensor 72 on the nozzle 6 will detect it. When the temperature detected by the temperature sensor 72 exceeds the preset threshold, the circulation pump is started, and the circulation pump pumps the coolant in the heat pipe 63 for circulation. Since the heat pipe 63 is wound around the inner shell 61, the heat generated on the inner shell 61 will be exchanged with the heat pipe 61 at the first time, thereby introducing the heat into the coolant. With the operation of the circulation pump, the heated coolant is pumped to the heat dissipation fins, and the heat is quickly dissipated at the heat dissipation fins through the multi-layered fins and fans, so as to achieve the purpose of rapid cooling. At the same time, the cooled coolant will again exchange heat through the nozzle 6 with the operation of the circulation pump. When the temperature of the nozzle 6 detected by the temperature sensor 72 is lower than the preset threshold, the temperature control box 7 will stop the circulation pump to prevent the temperature at the nozzle 6 from being too low and affecting the extrusion speed. Reasonable regulation can reduce the defective product accidents caused by the temperature of the nozzle 6, which is very efficient.
[0018] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the claims involved.
[0019] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A 3D printer and a printing method thereof, comprising a printing box (1), wherein a printer head (4) is arranged in the printing box (1), characterized in that: The inner cavity of the printing box (1) is provided with a working cavity (2), a sliding rod (3) is transversely arranged on the upper part of the working cavity (2), a printing head (4) is slidably sleeved on the sliding rod (3), and two cooling fans (5) are arranged on the top of the rear side of the working cavity (2); A nozzle (6) is provided at the bottom of the printer head (4), the nozzle (6) comprising an inner shell (61) and an outer shell (62), a heat conducting pipe (63) being wound around the inner shell (61); A temperature control box (7) is installed at the lower front part of the printer head (4), a temperature adjustment component (71) is installed in the temperature control box (7), a temperature sensor (72) is installed on the right side of the temperature control box (7), and a temperature sensor (72) is also arranged on the left side of the nozzle (6).
2. A 3D printer and a printing method thereof according to claim 1, characterized in that: The heat conducting pipe (63) is a copper pipe and is clamped along the extension arc of the inner shell (61); the outer shell (62) is sleeved on the inner shell (61), and an installation groove corresponding to the heat conducting pipe (63) is opened on the inner wall of the outer shell (61); during installation, the heat conducting pipe (63) is correspondingly clamped in the installation groove.
3. A 3D printer and a printing method thereof according to claim 1, characterized in that: The front side of the temperature control box (7) is provided with an adjustment button; the temperature adjustment component (71) comprises a circulation pump, heat dissipation fins, a fan and a control main board; the temperature control box (7) and the heat conduction pipe (63) are interconnected; and the temperature sensor (72) is electrically connected to the control board.
4. A 3D printer and a printing method thereof according to claim 1, characterized in that: A sliding block is arranged on the top of the printer head (4), and the sliding block is sleeved on the sliding rod (3). A driving motor is arranged in the inner cavity of the sliding block (3). A driving wheel is arranged at one end of the driving motor close to the sliding rod (3), and the driving wheel is rollingly mounted on the surface of the sliding rod (3).
5. A 3D printer and a printing method thereof according to claim 1, characterized in that: The left and right side surfaces and the front side surface of the printer case (1) are both provided with protective glass, the protective glass is tempered glass, and a glass door that flips up and down is provided on the front side of the protective glass.
6. A 3D printer and a printing method thereof according to claim 1, characterized in that: A heat dissipation fan (5) is arranged in the middle of the front side of the printer head (4), and the heat dissipation fan (5) is arranged inwardly in the inner cavity of the printer head (4).
7. A 3D printer and a printing method thereof according to claim 3, characterized in that: The heat conducting pipe (63) is filled with cooling liquid, and the heat conducting pipe (63) and the circulation pump directly form a circulation loop.