A flip type printing platform for a 3D printer

Abstract

The application discloses a kind of 3D printer with turnover printing platform, it is related to 3D printing technical field, including base, turnover mechanism and fixed horizontal plate, the front side of the base is provided with turnover mechanism.This kind of 3D printer with turnover printing platform, through two electric rotating shafts required synchronous work by turnover mechanism, through accurate control system and transmission device, ensure that printing platform can rotate smoothly, and keep correct angle, connecting cylinder rod and installation strip are installed by connecting pin shaft mode, to ensure that printing platform can keep stable under different angles, driven limit roller and limit telescopic rod cooperate work, for control the rotation range and position of printing platform, ensure that printing process does not occur out-of-range rotation, by the cooperation of careful design between the above components, can effectively improve the stability and performance of turnover printing platform, ensure that printing process proceeds smoothly, output high-quality printing quality.

Description

Technical Field

[0001] This invention belongs to the field of 3D printing technology, and particularly relates to a flip-type printing platform for a 3D printer. Background Technology

[0002] A flip-top printing platform is a common 3D printer design that allows the printing platform to be flipped during the printing process to print complex structures or objects that require support. This design helps avoid the influence of the support structure on the printed object, improving print quality and printing speed. At the same time, a flip-top printing platform can also achieve multi-material printing. By switching the print head and flip-top platform, different materials can be used in the same model.

[0003] Currently, flip-type printing platforms have unique advantages in the field of 3D printing. However, they cannot stably adjust the flip angle during flipping, making it difficult to operate when printing complex structures and angles in various directions. This requires switching flip platforms, which reduces the performance and reliability of flip-type printing platforms. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the current flip-type printing platform cannot adjust the flip angle in all directions when flipping, which reduces the performance and reliability of the flip-type printing platform.

[0005] To achieve the above objectives, the specific technical solution of the present invention is as follows: a flip-type printing platform for a 3D printer, comprising a base, a flipping mechanism and a fixed horizontal plate, wherein the flipping mechanism is provided on the front side of the base; The flipping mechanism includes a support bar, a first electric rotating shaft, a mounting bar, a connecting cylinder rod, a connecting support rod, a rectangular groove, a driven limiting roller, a second electric rotating shaft, a drive shaft seat, and a limiting telescopic rod. Two drive shaft seats are fixedly installed on opposite sides of the front of the flipping mechanism. The second electric rotating shaft is located near the top of the drive shaft seat's inner cavity. One end of the second electric rotating shaft is fixedly connected to the support bar, and the other end of the support bar is connected to the first electric rotating shaft. The mounting bar is assembled to the top of the first electric rotating shaft via a connector. A limiting telescopic rod is fixedly installed on the top of the drive shaft seat. A rectangular groove is formed on the front side of the mounting bar, and a driven limiting roller is located within the rectangular groove. The top end of the limiting telescopic rod is assembled to the driven limiting roller, and a connecting support rod is located on the inner side of the driven limiting roller.

[0006] As a further embodiment of the present invention, a translation mechanism is provided at the top of the mounting strip. The translation mechanism includes a drive motor, a transmission guide rod, a groove, a limiting roller, and a transmission belt. The drive motor is located on the left rear side of the translation mechanism. The groove is formed in the inner cavity of the translation mechanism. The transmission guide rod is located in the inner cavity of the translation mechanism. The transmission belt is sleeved on the surface of the transmission guide rod. The limiting rollers are respectively located on both sides of the inner cavity of the translation mechanism and sleeved on the inner side of the transmission belt. A transmission shaft is provided on the right side of the drive motor. The fixed cross plate is connected to the surface of the transmission belt.

[0007] As a further embodiment of the present invention, a support frame is fixedly installed at the bottom of the translation mechanism, and the bottom of the support frame is fixedly connected to the top of the mounting strip.

[0008] As a further embodiment of the present invention, a heating bed mechanism is provided on the top of the fixed horizontal plate. The heating bed mechanism includes a groove block, fastening bolts, supporting diagonal rods, a heater, a fixing block, a ventilation groove, and a fixing buckle. The fixing block is fixedly installed at the center of the bottom of the heating bed mechanism and located at the middle of the fixed horizontal plate. One end of the supporting diagonal rod is provided on all four sides of the fixing block. The fixing buckle is fixedly installed on all four sides of the bottom of the heating bed mechanism. The other end of the supporting diagonal rod is fixedly connected to the fixing buckle. Grooves are clamped and installed on both sides of the heating bed mechanism. Fastening bolts are threaded on the front and rear sides of the outer surface of the groove block. The ventilation groove is clamped on the surface of the heating bed mechanism.

[0009] As a further embodiment of the present invention, a drive mechanism is provided on the top of the base. The drive mechanism includes a servo motor, a first threaded sleeve, a first threaded screw, a drive gear, a transmission belt, a driven gear, a second threaded sleeve, a second threaded screw, and a fixed seat. The servo motor is located on the lower left side of the front of the drive mechanism. The servo motor is connected to the first threaded screw via a coupling. The first threaded sleeve is fitted onto the surface of the first threaded screw. The top end of the first threaded screw is connected to the drive gear. The fixed seat is located on the lower right side of the front of the drive mechanism. The top of the fixed seat is provided with a second threaded screw. The surface of the second threaded screw is fitted with a second threaded sleeve. The top end of the second threaded screw is provided with a driven gear. The transmission belt meshes with the surface of the drive gear, and its other end meshes with the surface of the driven gear.

[0010] As a further embodiment of the present invention, a dual drive structure is fixedly installed on the inner side of the first threaded sleeve. The dual drive structure is fixedly installed with an extruder after being fitted with a driver. Limiting guide plates are fixedly installed on the upper and lower sides of the front of the drive mechanism near the top.

[0011] As a further embodiment of the present invention, through holes are provided on both sides of the front of the base, and the flipping mechanism is inserted into the inner cavity of the through holes and penetrates the inner cavity of the base through the limiting guide rods provided on both sides, and electric walking wheels are provided around the bottom of the flipping mechanism.

[0012] A flip-type printing platform for a 3D printer, the method of use of which is as follows: S1. Firstly, the heating bed mechanism can ensure that the printing material maintains an appropriate temperature during the printing process for materials such as ABS, which helps to improve the printing success rate and printing quality. In addition, the support diagonal bar set at the bottom of the heating bed mechanism can effectively ensure the support effect of the heating bed mechanism. S2. The second electric rotating shaft can drive the support bar to rotate in the inner cavity of the drive shaft seat. When the support bar rotates upward, it can cooperate with the first electric rotating shaft to tilt the mounting bar and the components above it. At the same time, the limit telescopic rod can automatically extend and retract when the mounting bar is tilted, which can provide additional support and stability, thereby ensuring stability during flipping. S3. After the flipping mechanism adjusts the angle, the drive motor set by the translation mechanism drives the transmission shaft to rotate, and the transmission belt meshing with it can rotate. At the same time, the transmission guide rod and the limit roller cooperate to ensure the stable transmission of the transmission belt, which can directly drive the fixed horizontal plate and the above components to move, thereby realizing the adjustment of the printing position. S4. Secondly, after the machine base is installed and fixed, the electric walking wheels can be used to adjust the position of the flipping mechanism and the above components directly on the front and rear sides of the machine base. The extruder is responsible for pushing the molten printing material, usually plastic filaments, to the nozzle and controlling the flow and stop of the material during the printing process, so as to stack the thermoplastic material layer by layer to the designated position. The dual drive structure can realize the lateral movement of the extruder. S5. The servo motor can drive the first threaded screw to rotate, which in turn drives the drive gear to rotate. The teeth of the drive gear mesh with the transmission belt, transmitting power to the transmission belt. The transmission belt, through meshing with the drive gear, transmits power to the driven gear. The driven gear receives power, meshes with the transmission belt, and rotates under the traction of the transmission belt. The driven gear, through meshing, transmits power to the second threaded screw, thereby realizing the longitudinal movement of the first and second threaded sleeves and achieving vertical adjustment of the extruder's position.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The flipping mechanism requires two electric rotating shafts to work synchronously. Through a precise control system and transmission device, it ensures that the printing platform can rotate smoothly and maintain the correct angle. The connecting cylinder and mounting strip are installed by connecting pins to ensure that the printing platform can remain stable at different angles. The driven limit roller and the limit telescopic rod work together to control the rotation range and position of the printing platform, ensuring that it will not rotate beyond the range during printing. Through the careful design and cooperation of the above components, the stability and performance of the flipping printing platform can be effectively improved, ensuring that the printing process proceeds smoothly and outputs high-quality prints. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure provided in an embodiment of the present invention; Figure 2 This is a partial schematic diagram of the drive mechanism and the flipping mechanism provided in an embodiment of the present invention; Figure 3 This is a bottom view of the heating bed mechanism structure provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the translation mechanism structure provided in an embodiment of the present invention; Figure 5 This is a partial bottom view of the base structure provided in an embodiment of the present invention; Figure 6 This is provided by the embodiments of the present invention. Figure 2 Enlarged view of the structure at point A in the middle.

[0015] Explanation of markings in the diagram: 1. Base; 2. Drive mechanism; 201. Servo motor; 202. First threaded sleeve; 203. First threaded screw; 204. Drive gear; 205. Transmission belt; 206. Driven gear; 207. Second threaded sleeve; 208. Second threaded screw; 209. Fixed seat; 3. Dual drive structure; 4. Limiting guide plate; 5. Extruder; 6. Heated bed mechanism; 601. Groove block; 602. Fastening bolt; 603. Supporting diagonal bar; 604. Heater; 605. Fixed block; 606. Ventilation slot; 60 7. Fixing buckle; 7. Translation mechanism; 701. Drive motor; 702. Transmission guide rod; 703. Groove; 704. Limiting roller; 705. Transmission belt; 8. Support frame; 9. Tilting mechanism; 901. Support bar; 902. First electric rotating shaft; 903. Mounting bar; 904. Connecting cylinder rod; 905. Connecting support rod; 906. Rectangular groove; 907. Driven limiting roller; 908. Second electric rotating shaft; 909. Drive shaft seat; 910. Limiting telescopic rod; 10. Through hole; 11. Fixing cross plate; 12. Electric traveling wheel. Detailed Implementation

[0016] To further understand the invention's content, features, and effects, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0017] The structure of the present invention will now be described in detail with reference to the accompanying drawings.

[0018] Example 1: like Figures 1 to 6 As shown, the present invention provides a flip-type printing platform for a 3D printer, including a base 1, a flipping mechanism 9 and a fixed horizontal plate 11, wherein the flipping mechanism 9 is provided on the front side of the base 1. The flipping mechanism 9 includes a support bar 901, a first electric rotating shaft 902, a mounting bar 903, a connecting cylinder rod 904, a connecting support rod 905, a rectangular groove 906, a driven limiting roller 907, a second electric rotating shaft 908, a drive shaft seat 909, and a limiting telescopic rod 910. There are two drive shaft seats 909, which are fixedly installed on both sides of the front of the flipping mechanism 9. The second electric rotating shaft 908 is located near the top of the inner cavity of the drive shaft seat 909. One end of the second electric rotating shaft 908 is connected to the support bar 901. The support bar 901 is fixedly connected to the first electric rotating shaft 902 at one end. The mounting bar 903 is assembled and connected to the top of the first electric rotating shaft 902 through a connector. The top of the drive shaft seat 909 is fixedly installed with a limiting telescopic rod 910. A rectangular groove 906 is provided on the front side of the mounting bar 903. A driven limiting roller 907 is provided in the inner cavity of the rectangular groove 906. The top end of the limiting telescopic rod 910 is assembled and connected to the driven limiting roller 907. A connecting support rod 905 is provided on the inner side of the driven limiting roller 907.

[0019] refer to Figure 2 , Figure 3 , Figure 4 and Figure 6A translation mechanism 7 is provided at the top of the mounting strip 903. The translation mechanism 7 includes a drive motor 701, a transmission guide rod 702, a groove 703, a limiting roller 704, and a transmission belt 705. The drive motor 701 is located on the left rear side of the translation mechanism 7. The groove 703 is formed in the inner cavity of the translation mechanism 7. The transmission guide rod 702 is located in the inner cavity of the translation mechanism 7. The transmission belt 705 is sleeved on the surface of the transmission guide rod 702. The limiting roller 704 is respectively located on both sides of the inner cavity of the translation mechanism 7 and sleeved on the inner side of the transmission belt 705. A transmission shaft is provided on the right side of the drive motor 701. The fixed cross plate 11 is connected to the surface of the transmission belt 705. A support frame 8 is fixedly installed at the bottom of the translation mechanism 7. The bottom of the support frame 8 is fixedly connected to the top of the mounting strip 903. According to claim 2, a 3D printing... A flip-type printing platform for a printer is characterized in that: a heating bed mechanism 6 is provided on the top of a fixed horizontal plate 11. The heating bed mechanism 6 includes a slot block 601, fastening bolts 602, supporting diagonal rods 603, a heater 604, a fixing block 605, a ventilation slot 606, and a fixing buckle 607. The fixing block 605 is fixedly installed at the center of the bottom of the heating bed mechanism 6 and is located at the middle of the fixed horizontal plate 11. One end of the supporting diagonal rod 603 is provided around the fixing block 605. The fixing buckle 607 is fixedly installed around the bottom of the heating bed mechanism 6. The other end of the supporting diagonal rod 603 is fixedly connected to the fixing buckle 607. The slot blocks 601 are clamped and installed on both sides of the heating bed mechanism 6. Fastening bolts 602 are threaded on the front and rear sides of the outer surface of the slot block 601. The ventilation slot 606 is clamped on the surface of the heating bed mechanism 6.

[0020] The above scheme is adopted: the drive motor 701 of the translation mechanism 7 drives the transmission shaft to rotate, and the transmission belt 705 meshing with it can rotate. At the same time, the transmission guide rod 702 and the limiting roller rod 704 cooperate to ensure the stable transmission of the transmission belt 705, which can directly drive the fixed horizontal plate 11 and above components to move, thereby realizing the adjustment of the printing position. The heating bed mechanism 6 can be used for printing materials such as ABS, ensuring that the printing material maintains an appropriate temperature during the printing process, which helps to improve the printing success rate and printing quality. The support diagonal rod 603 set at the bottom of the heating bed mechanism 6 can ensure the support effect of the heating bed mechanism 6. The fastening bolt 602 realizes the installation and disassembly of the heating bed mechanism 6.

[0021] Example 2: refer to Figure 1 , Figure 2 and Figure 5A drive mechanism 2 is provided on the top of the base 1. The drive mechanism 2 includes a servo motor 201, a first threaded sleeve 202, a first threaded screw 203, a drive gear 204, a transmission belt 205, a driven gear 206, a second threaded sleeve 207, a second threaded screw 208, and a fixed seat 209. The servo motor 201 is located on the lower left side of the front of the drive mechanism 2. The servo motor 201 is connected to the first threaded screw 203 via a coupling. The first threaded sleeve 202 is fitted onto the surface of the first threaded screw 203. The top end of the first threaded screw 203 is connected to the drive gear 204. The fixed seat 209 is located on the lower right side of the front of the drive mechanism 2. The top of the fixed seat 209 is provided with the second threaded screw 208. 08. A second threaded sleeve 207 is fitted onto the surface of the second threaded screw 208. A driven gear 206 is provided at the top of the second threaded screw 208. The transmission belt 205 meshes with the surface of the driving gear 204, and the other end meshes with the surface of the driven gear 206. A double drive structure 3 is fixedly installed on the inner side of the first threaded sleeve 202. An extruder 5 is fixedly installed on the double drive structure 3 after being fitted onto the driver. Limiting guide plates 4 are fixedly installed on the upper and lower sides of the front of the drive mechanism 2 near the top. Through holes 10 are provided on both sides of the front of the machine base 1. The flipping mechanism 9 is inserted into the inner cavity of the through holes 10 through the limiting guide rods provided on both sides and penetrates the inner cavity of the machine base 1. Electric walking wheels 12 are provided around the bottom of the flipping mechanism 9.

[0022] Using the above scheme: the servo motor 201 can drive the first threaded screw 203 to rotate, and when rotating, it can drive the drive gear 204 to rotate. The teeth of the drive gear 204 mesh with the transmission belt 205, transmitting power to the transmission belt 205. The transmission belt 205, through meshing with the drive gear 204, transmits power to the driven gear 206. The driven gear 206 can receive power, mesh with the transmission belt 205, and rotate under the traction of the transmission belt 205. The driven gear 206 transmits power to the second threaded screw 208 through meshing, thereby realizing the longitudinal movement of the first threaded sleeve 202 and the second threaded sleeve 207, realizing the vertical adjustment of the position of the extruder 5, thus effectively ensuring the stable movement of the extruder 5. The electric traveling wheels 12 can quickly and directly realize the position adjustment of the flipping mechanism 9 and above directly on the front and rear sides of the machine base 1.

[0023] Working principle of the invention: In use, the position of the heating bed mechanism 6 is first adjusted. The dual drive structure 3 enables the lateral movement of the extruder 5. The servo motor 201 drives the first threaded screw 203 to rotate, which in turn drives the drive gear 204 to rotate. The teeth of the drive gear 204 mesh with the transmission belt 205, transmitting power to the transmission belt 205. The transmission belt 205, through meshing with the drive gear 204, transmits power to the driven gear 206. The driven gear 206 receives power, meshes with the transmission belt 205, and rotates under the traction of the transmission belt 205. The driven gear 206, through meshing, transmits power to the second threaded screw 208, thereby realizing the longitudinal movement of the first threaded sleeve 202 and the second threaded sleeve 207, achieving vertical adjustment of the position of the extruder 5. The second electric rotating shaft 908 can drive the support bar 901 to rotate within the drive shaft seat 909. When the support bar 901 rotates upward, it can cooperate with the first electric rotating shaft 902 to drive the support bar 901 to rotate. The mounting strip 903 and its components are tilted, and the limiting telescopic rod 910 can automatically extend and retract when the mounting strip 903 is tilted, providing additional support and stability to ensure stability during flipping. After the flipping mechanism 9 adjusts the angle, the drive motor 701 of the translation mechanism 7 drives the transmission shaft to rotate, and the transmission belt 705 meshing with it can rotate. At the same time, the transmission guide rod 702 and the limiting roller rod 704 cooperate to ensure the stable transmission of the transmission belt 705, which can directly drive the fixed horizontal plate 11 and its components to move, thereby adjusting the printing position. The heating bed mechanism 6 is designed for printing materials such as ABS, ensuring that the printing material maintains an appropriate temperature during the printing process. The support inclined rod 603 at the bottom of the heating bed mechanism 6 can ensure the support effect of the heating bed mechanism 6. The extruder 5 is responsible for pushing the molten printing material, usually plastic filaments, to the nozzle and controlling the flow and stop of the material during the printing process, so as to stack the thermoplastic material layer by layer to the designated position.

[0024] In summary, this 3D printer uses a flip-type printing platform. The flipping mechanism 9 allows for synchronous operation of two electric rotating shafts. A precise control system and transmission device ensure smooth rotation of the printing platform while maintaining the correct angle. The connecting cylinder 904 and mounting strip 904 are installed via connecting pins to ensure stability at different angles. The driven limit roller 907 and the limit telescopic rod 910 work together to control the rotation range and position of the printing platform, preventing over-rotation during printing. This carefully designed coordination between the components effectively improves the stability and performance of the flip-type printing platform, ensuring smooth printing and high-quality output. It solves the problem of current flip-type printing platforms being unable to fully adjust the flip angle during flipping, which reduces their performance and reliability.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flip-type printing platform for a 3D printer, comprising a base (1), a flipping mechanism (9), and a fixed horizontal plate (11), characterized in that: A flipping mechanism (9) is provided on the front side of the base (1); The flipping mechanism (9) includes a support bar (901), a first electric rotating shaft (902), a mounting bar (903), a connecting cylinder rod (904), a connecting support rod (905), a rectangular groove (906), a driven limiting roller (907), a second electric rotating shaft (908), a drive shaft seat (909), and a limiting telescopic rod (910). There are two drive shaft seats (909), which are fixedly installed on both sides of the front of the flipping mechanism (9). The second electric rotating shaft (908) is located near the top of the inner cavity of the drive shaft seat (909). One end of the second electric rotating shaft (908) is connected to the support bar (901). The support bar (901) is fixedly connected to the first electric shaft (902) at the other end. The mounting bar (903) is assembled and connected to the top of the first electric shaft (902) through a connector. The top of the drive shaft seat (909) is fixedly installed with a limiting telescopic rod (910). A rectangular groove (906) is provided on the front side of the mounting bar (903). A driven limiting roller (907) is provided in the inner cavity of the rectangular groove (906). The top end of the limiting telescopic rod (910) is assembled and connected to the driven limiting roller (907). A connecting support rod (905) is provided on the inner side of the driven limiting roller (907).

2. The flip-type printing platform for a 3D printer according to claim 1, characterized in that: The top of the mounting strip (903) is provided with a translation mechanism (7). The translation mechanism (7) includes a drive motor (701), a transmission guide rod (702), a groove (703), a limiting roller (704), and a transmission belt (705). The drive motor (701) is located on the left rear side of the translation mechanism (7). The groove (703) is opened in the inner cavity of the translation mechanism (7). The transmission guide rod (702) is located in the inner cavity of the translation mechanism (7). The transmission belt (705) is sleeved on the surface of the transmission guide rod (702). The limiting roller (704) is respectively located on both sides of the inner cavity of the translation mechanism (7) and sleeved on the inner side of the transmission belt (705). A transmission shaft is provided on the right side of the drive motor (701). The fixed cross plate (11) is connected to the surface of the transmission belt (705).

3. The flip-type printing platform for a 3D printer according to claim 2, characterized in that: The bottom of the translation mechanism (7) is fixedly installed with a support frame (8), and the bottom of the support frame (8) is fixedly connected to the top of the mounting strip (903).

4. The flip-type printing platform for a 3D printer according to claim 2, characterized in that: A heating bed mechanism (6) is provided on the top of the fixed horizontal plate (11). The heating bed mechanism (6) includes a groove block (601), fastening bolts (602), supporting diagonal rods (603), heaters (604), fixing blocks (605), ventilation slots (606), and fixing buckles (607). The fixing blocks (605) are fixedly installed at the center of the bottom of the heating bed mechanism (6) and located at the middle of the fixed horizontal plate (11). One end of the supporting diagonal rods (603) is provided around the fixing blocks (605). Fixing buckles (607) are fixedly installed around the bottom of the heating bed mechanism (6). The other end of the supporting diagonal rods (603) is fixedly connected to the fixing buckles (607). The groove blocks (601) are clamped on both sides of the heating bed mechanism (6). Fastening bolts (602) are threaded on the front and rear sides of the outer surface of the groove blocks (601). The ventilation slots (606) are clamped on the surface of the heating bed mechanism (6).

5. The flip-type printing platform for a 3D printer according to claim 1, characterized in that: A drive mechanism (2) is provided on the top of the base (1). The drive mechanism (2) includes a servo motor (201), a first threaded sleeve (202), a first threaded screw (203), a drive gear (204), a transmission belt (205), a driven gear (206), a second threaded sleeve (207), a second threaded screw (208), and a fixed seat (209). The servo motor (201) is located on the lower left side of the front of the drive mechanism (2). The servo motor (201) is connected to the first threaded screw (203) via a coupling. The first threaded sleeve (202) is sleeved and installed on the first threaded screw (208). The surface of a threaded screw (203) is provided. The top end of the first threaded screw (203) is connected to the driving gear (204). The fixed seat (209) is located on the lower right side of the front side of the drive mechanism (2). The top of the fixed seat (209) is provided with a second threaded screw (208). The surface of the second threaded screw (208) is fitted with a second threaded sleeve (207). The top end of the second threaded screw (208) is provided with a driven gear (206). The transmission belt (205) meshes with the surface of the driving gear (204) and the other end meshes with the surface of the driven gear (206).

6. A flip-type printing platform for a 3D printer according to claim 5, characterized in that: The inner side of the first threaded sleeve (202) is fixedly installed with a dual drive structure (3). The dual drive structure (3) is fixedly installed with an extruder (5) after being fitted with a driver. The upper and lower sides of the front of the drive mechanism (2) near the top are fixedly installed with limit guide plates (4).

7. A flip-type printing platform for a 3D printer according to claim 1, characterized in that: The base (1) has through holes (10) on both sides of the front. The flipping mechanism (9) is inserted into the cavity of the through hole (10) and passes through the cavity of the base (1) by the limiting guide rods on both sides. Electric walking wheels (12) are provided around the bottom of the flipping mechanism (9).

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