Platform stabilizing device for laser 3D printing

Abstract

The invention provides a platform stabilizing device for laser 3D printing, and relates to the field of laser 3D printing, the platform stabilizing device comprises a three-dimensional printing platform, four stabilizing mechanisms are arranged at the bottom of the three-dimensional printing platform, each stabilizing mechanism comprises a fixed cylinder, and the fixed cylinders are fixedly connected to the bottom surface of the three-dimensional printing platform; the bottom face of the fixed cylinder fixedly communicates with a circular suction cup, the inner wall of the fixed cylinder is slidably connected with a circular piston, and the upper surface of the circular piston is fixedly connected with a movable column. According to the platform stabilizing device for laser 3D printing, a circular piston on a movable column can be driven to extract air in a circular suction cup, so that the circular suction cup is adsorbed to a plane, and the device is stably fixed to the placement plane, so that the stability of the device during laser 3D printing is improved; and the problem that product quality is affected due to errors of products printed by the laser 3D printer caused by shaking is effectively avoided.

Description

Technical Field

[0001] This invention relates to a platform stabilization device, specifically a platform stabilization device for laser 3D printing, belonging to the field of laser 3D printing technology. Background Technology

[0002] Laser 3D printing, also known as additive manufacturing or rapid prototyping, is a technology that uses digital model files as a basis and employs powdered metal or plastic and other bondable materials to construct objects layer by layer. Laser 3D printing is usually achieved using digital material printers and is often used in mold making, industrial design and other fields to create models. Later, it was gradually used for the direct manufacturing of some products, and there are already parts printed using this technology.

[0003] Since laser 3D printing equipment is used for high-precision metal parts, it is generally placed directly on the workbench when printing workpieces. During the XYZ axis linkage operation of the laser 3D printer, there is a high possibility that the bottom of the laser 3D printer will shake due to vibration, which will lead to errors in the printed products and affect the product quality.

[0004] On the other hand, a search revealed a dual-beam laser 3D printing device disclosed in patent number CN112596343B. This device improves the printing efficiency of traditional laser direct-write systems and significantly reduces processing time and costs through parallel dual-beam printing. However, this device lacks the ability to quickly replace the Z-axis threaded rod on the laser 3D printer. Since the Z-axis threaded rod drives the planar printed part up and down, after prolonged use, it will wear and slightly bend, causing the planar printed part to shift or wobble during vertical movement. To maintain the stability of laser 3D printing, the Z-axis threaded rod generally needs to be replaced periodically. However, replacing the Z-axis threaded rod usually requires removing the surrounding coverings and components, making the replacement process cumbersome and affecting the maintenance efficiency of the laser 3D printer. Therefore, we provide a platform stabilization device for laser 3D printing to solve these problems. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] The purpose of this invention is to provide a platform stabilization device for laser 3D printing in order to solve the above-mentioned problems, thereby addressing the difficulty in quickly replacing the Z-axis threaded rod on a laser 3D printer in the prior art.

[0007] (II) Technical Solution

[0008] This invention is achieved through the following technical solution: a platform stabilization device for laser 3D printing, comprising a three-dimensional printing platform, four stabilization mechanisms provided at the bottom of the three-dimensional printing platform, each stabilization mechanism comprising a fixed cylinder, the fixed cylinder being fixedly connected to the bottom surface of the three-dimensional printing platform, a circular suction cup being fixedly connected to the bottom surface of the fixed cylinder, a circular piston being slidably connected to the inner wall of the fixed cylinder, a movable column being fixedly connected to the upper surface of the circular piston, a fixed blocking block being fixedly connected to the inner wall of the fixed cylinder, and the movable column penetrating the outer surface of the fixed blocking block and being slidably connected to the fixed blocking block;

[0009] Two limiting rods are fixedly connected to the outer surface of the 3D printing platform. A fixed frame is provided above the 3D printing platform. Both limiting rods are fixedly connected to the outer surface of the fixed frame. A clamping mechanism is provided on the outside of both limiting rods. The clamping mechanism includes a movable frame. A flatbed printer is fixedly connected to the outer surface of the movable frame. A threaded block is slidably connected to the inner wall of the movable frame. A clamping block is fixedly connected to the outer surface of the threaded block. A pin is fixedly connected to the outer surface of the clamping block.

[0010] A lifting threaded rod is provided between the two limiting rods. A threaded tube is threadedly connected to the outer surface of the lifting threaded rod. Two slots adapted to the pins are opened on the outer surface of the threaded tube. A limiting mechanism is provided outside the lifting threaded rod. The limiting mechanism includes two semi-annular blocks. A limiting post is fixedly connected to the outer surface of each of the two semi-annular blocks.

[0011] Preferably, a fixed plate is fixedly connected to the upper end of the movable column, and the fixed plate is slidably connected to the fixed cylinder. One end of the fixed plate is hinged to a hinge rod via a pin, and the end of the hinge rod away from the fixed plate is hinged to a slider via a pin. When the slider moves closer to the fixed cylinder, the slider will drive the fixed plate to move upward through the hinge rod. When the slider moves away from the fixed cylinder, the slider will drive the fixed plate to move downward through the hinge rod.

[0012] Preferably, a slide rail is fixedly connected to the outer surface of the fixed cylinder, the slider is slidably connected to the inner wall of the slide rail, a telescopic spring is fixedly connected to the outer surface of the slider, the end of the fixed cylinder away from the slider is fixedly connected to the inner wall of the slide rail, and a fixed long rod is fixedly connected to the outer surface of the slider. The slide rail increases the stability of the slider during movement and prevents it from deviating. The telescopic spring ensures that after the slider is no longer restricted, it will be reset by the spring pressure of the telescopic spring, allowing it to move away from the fixed cylinder.

[0013] Preferably, a sleeve is fixedly connected to the outer surface of the slide rail, and two reinforcing ribs are fixedly connected between the sleeve and the fixed cylinder. A wedge-shaped locking tongue is slidably connected to the inner wall of the sleeve, and a limiting groove adapted to the wedge-shaped locking tongue is opened on the outer surface of the fixed long rod. When the fixed long rod moves, the limiting groove will engage with the wedge-shaped locking tongue, so that the slider on the fixed long rod is limited.

[0014] Preferably, a second telescopic spring is fixedly connected to the outer surface of the wedge-shaped locking tongue. The end of the second telescopic spring away from the wedge-shaped locking tongue is fixedly connected to the inner top wall of the sleeve. A pull rod is fixedly connected to the outer surface of the wedge-shaped locking tongue. A sliding groove adapted to the pull rod is opened on the outer surface of the sleeve. The pull rod is slidably connected to the sleeve through the sliding groove. With the setting of the second telescopic spring, the wedge-shaped locking tongue is subjected to the spring pressure of the second telescopic spring, maintaining the locking effect of the wedge-shaped locking tongue on the restricted groove. With the setting of the pull rod, the operator can pull the pull rod to release the wedge-shaped locking tongue from the restricted groove.

[0015] Preferably, two fixed tubes are fixedly connected to the outer surface of the movable frame, and a pressing threaded rod is provided on the outside of the movable frame. Both fixed tubes are rotatably connected to the pressing threaded rod. The pressing threaded rod meshes with a threaded block. Rotating the pressing threaded rod causes the threaded block to move, causing the threaded block to drive the pin on the clamping block to approach the threaded tube, so that the pin is inserted into the groove of the threaded tube, thereby limiting the threaded tube and preventing it from rotating.

[0016] Preferably, a motor is fixedly connected to the upper surface of the fixing frame, and a plug is fixedly connected to the output end of the motor. The upper end of the lifting threaded rod is provided with a socket that matches the plug. After the plug is inserted into the socket, the motor is controlled to rotate the plug, so that the plug drives the lifting threaded rod to rotate through the socket.

[0017] Preferably, a square plug is fixedly connected to the bottom end of the lifting threaded rod, and a rotating circular plate is rotatably connected to the outer surface of the 3D printing platform. The outer surface of the rotating circular plate is provided with a square groove that matches the square plug. By setting the square plug, the stability of the rotation of the lifting threaded rod is increased after the square plug is inserted into the square groove of the square plug.

[0018] Preferably, both semi-annular blocks are adapted to the lifting threaded rod, and the outer surfaces of the socket and plug are provided with insertion holes adapted to the limiting post. Two symmetrical connecting blocks are fixedly connected to the outer surfaces of the two semi-annular blocks. After the two semi-annular blocks are combined, they form a complete ring and are fitted onto the lifting threaded rod, so that the limiting post is inserted into the insertion holes of the lifting threaded rod and the plug. At the same time, the two semi-annular blocks are fixed together by two bolts.

[0019] This invention provides a platform stabilization device for laser 3D printing, which has the following beneficial effects:

[0020] 1. This invention incorporates four stabilizing mechanisms. After the device is placed on a flat surface, pushing the fixed rod moves the slider and lifts the fixed plate via the hinge rod. This causes the fixed plate to drive the circular piston on the movable column to extract air from the circular suction cup, allowing the circular suction cup to adhere to the flat surface. This stabilizes the device on the placement surface, thereby increasing its stability during laser 3D printing and effectively preventing errors in the printed products caused by shaking, which could affect product quality.

[0021] 2. This invention, by incorporating a clamping mechanism and a limiting mechanism, allows for the removal and replacement of the lifting threaded rod when necessary. The rotating and pressing mechanism moves the clamping block away from the threaded tube, preventing the pin from engaging with the threaded tube. Simultaneously, the bolts on the two connecting blocks are removed, separating the two semi-annular blocks. This prevents the semi-annular blocks from limiting the lifting threaded rod and the plug, allowing workers to directly lift and remove the lifting threaded rod, thus completing the disassembly. This eliminates the need to remove the packaging and covering, enabling direct replacement of the lifting threaded rod and increasing the ease and efficiency of maintenance. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0024] Figure 3 This is a three-dimensional structural diagram of the stabilizing mechanism of the present invention;

[0025] Figure 4 This is a three-dimensional structural diagram of the interior of the fixed cylinder of the present invention;

[0026] Figure 5 This is a schematic diagram of a portion of the split structure of the stabilizing mechanism of the present invention;

[0027] Figure 6 This is a three-dimensional structural diagram of the lifting threaded rod after assembly according to the present invention;

[0028] Figure 7 This is a schematic diagram of the split structure of the lifting threaded rod of the present invention;

[0029] Figure 8 For the present invention Figure 7 Enlarged view of point A in the middle;

[0030] Figure 9 This is a three-dimensional structural diagram of the clamping mechanism of the present invention.

[0031] [Explanation of Key Component Symbols]

[0032] 1. 3D printing platform;

[0033] 2. Stabilizing mechanism; 201. Fixed cylinder; 202. Circular suction cup; 203. Fixed blocking block; 204. Circular piston; 205. Movable column; 206. Fixed plate; 207. Hinge rod; 208. Slider; 209. Slide rail; 210. Telescopic spring one; 211. Sleeve; 212. Reinforcing rib; 213. Wedge-shaped locking tongue; 214. Pull rod; 215. Telescopic spring two; 216. Fixed long rod; 217. Restricted groove;

[0034] 3. Limiting rod; 4. Fixing bracket; 5. Motor; 6. Lifting threaded rod; 7. Threaded tube;

[0035] 8. Clamping mechanism; 801. Movable frame; 802. Threaded block; 803. Clamping block; 804. Pin; 805. Pressing threaded rod; 806. Fixed tube;

[0036] 9. Limiting mechanism; 901. Semi-circular block; 902. Limiting post; 903. Connecting block;

[0037] 10. Plug; 11. Flatbed printer; 12. Socket; 13. Rotating round plate; 14. Square plug. Detailed Implementation

[0038] This invention provides a platform stabilization device for laser 3D printing.

[0039] Please see Figure 1 , Figure 3 , Figure 4 and Figure 5 The device includes a 3D printing platform 1, with four stabilizing mechanisms 2 at its bottom. Each stabilizing mechanism 2 includes a fixed cylinder 201, which is fixedly connected to the bottom surface of the 3D printing platform 1. A circular suction cup 202 is fixedly connected to the bottom surface of the fixed cylinder 201. A circular piston 204 is slidably connected to the inner wall of the fixed cylinder 201. A movable column 205 is fixedly connected to the upper surface of the circular piston 204. A fixing block 203 is fixedly connected to the inner wall of the fixed cylinder 201. The movable column 205 passes through the outer surface of the fixing block 203 and is slidably connected to the fixing block 203. When the circular piston 204 moves upward, it draws air from the circular suction cup 202, causing the circular suction cup 202 to adhere to the plane, thus stabilizing the device on the placement plane and increasing its stability during laser 3D printing.

[0040] A fixed plate 206 is fixedly connected to the upper end of the movable column 205. The fixed plate 206 is slidably connected to the fixed cylinder 201. One end of the fixed plate 206 is hinged to a hinge rod 207 via a pin. The end of the hinge rod 207 away from the fixed plate 206 is hinged to a slider 208 via a pin. When the slider 208 moves closer to the fixed cylinder 201, the slider 208 will drive the fixed plate 206 to move upward through the hinge rod 207. When the slider 208 moves away from the fixed cylinder 201, the slider 208 will drive the fixed plate 206 to move downward through the hinge rod 207.

[0041] A slide rail 209 is fixedly connected to the outer surface of the fixed cylinder 201. The slider 208 is slidably connected to the inner wall of the slide rail 209. A telescopic spring 210 is fixedly connected to the outer surface of the slider 208. The end of the fixed cylinder 201 away from the slider 208 is fixedly connected to the inner wall of the slide rail 209. The slide rail 209 increases the stability of the slider 208 when it moves and prevents the slider 208 from deviating when it moves. The telescopic spring 210 allows the slider 208 to be reset by the spring pressure of the telescopic spring 210 after it is no longer restricted, so that the slider 208 moves away from the fixed cylinder 201.

[0042] A sleeve 211 is fixedly connected to the outer surface of the slide rail 209. Two reinforcing ribs 212 are fixedly connected between the sleeve 211 and the fixed cylinder 201. A wedge-shaped locking tongue 213 is slidably connected to the inner wall of the sleeve 211. A fixed long rod 216 is fixedly connected to the outer surface of the slider 208. A limiting groove 217 adapted to the wedge-shaped locking tongue 213 is opened on the outer surface of the fixed long rod 216. When the fixed long rod 216 moves, the limiting groove 217 will engage with the wedge-shaped locking tongue 213, so that the slider 208 on the fixed long rod 216 is limited.

[0043] A telescopic spring 215 is fixedly connected to the outer surface of the wedge-shaped locking tongue 213. One end of the telescopic spring 215 away from the wedge-shaped locking tongue 213 is fixedly connected to the inner top wall of the sleeve 211. A pull rod 214 is fixedly connected to the outer surface of the wedge-shaped locking tongue 213. A sliding groove adapted to the pull rod 214 is opened on the outer surface of the sleeve 211. The pull rod 214 is slidably connected to the sleeve 211 through the sliding groove of the sleeve 211. With the setting of the telescopic spring 215, the wedge-shaped locking tongue 213 is subjected to the spring pressure of the telescopic spring 215, maintaining the locking effect of the wedge-shaped locking tongue 213 on the restricted groove 217. With the setting of the pull rod 214, the operator can pull the pull rod 214 to release the wedge-shaped locking tongue 213 from the restricted groove 217.

[0044] Please see Figure 2 , Figure 6 ,and Figure 9Two limiting rods 3 are fixedly connected to the outer surface of the 3D printing platform 1. A fixed frame 4 is provided above the 3D printing platform 1. Both limiting rods 3 are fixedly connected to the outer surface of the fixed frame 4. A clamping mechanism 8 is provided outside each of the two limiting rods 3. The clamping mechanism 8 includes a movable frame 801. A flatbed printer 11 is fixedly connected to the outer surface of the movable frame 801. A threaded block 802 is slidably connected to the inner wall of the movable frame 801. A clamping block 803 is fixedly connected to the outer surface of the threaded block 802. An insert is fixedly connected to the outer surface of the clamping block 803. Pin 804, two fixed tubes 806 are fixedly connected to the outer surface of the movable frame 801. A pressing threaded rod 805 is provided on the outside of the movable frame 801. Both fixed tubes 806 are rotatably connected to the pressing threaded rod 805. The pressing threaded rod 805 meshes with the threaded block 802. Rotating the pressing threaded rod 805 causes the threaded block 802 to move, causing the threaded block 802 to drive the pin 804 on the clamping block 803 to approach the threaded tube 7, so that the pin 804 is inserted into the slot of the threaded tube 7, thereby limiting the threaded tube 7 and preventing the threaded tube 7 from rotating.

[0045] A lifting threaded rod 6 is provided between the two limiting rods 3. A threaded tube 7 is threadedly connected to the outer surface of the lifting threaded rod 6. Two slots adapted to the pins 804 are opened on the outer surface of the threaded tube 7. A motor 5 is fixedly connected to the upper surface of the fixing frame 4. A plug 10 is fixedly connected to the output end of the motor 5. A socket 12 adapted to the plug 10 is opened at the upper end of the lifting threaded rod 6. After the plug 10 is inserted into the socket 12, the motor 5 is controlled to drive the plug 10 to rotate, so that the plug 10 drives the lifting threaded rod 6 to rotate through the socket 12. A square plug 14 is fixedly connected to the bottom end of the lifting threaded rod 6. A rotating circular plate 13 is rotatably connected to the outer surface of the 3D printing platform 1. A square slot adapted to the square plug 14 is opened on the outer surface of the rotating circular plate 13. The square plug 14 increases the stability of the rotation of the lifting threaded rod 6 after it is inserted into the square slot.

[0046] Please see Figure 7 and Figure 8 The lifting threaded rod 6 is provided with a limiting mechanism 9 on its exterior. The limiting mechanism 9 includes two semi-annular blocks 901. The outer surfaces of the two semi-annular blocks 901 are fixedly connected to limiting posts 902. The two semi-annular blocks 901 are adapted to the lifting threaded rod 6. The outer surfaces of the socket 12 and the plug 10 are provided with insertion holes adapted to the limiting posts 902. The outer surfaces of the two semi-annular blocks 901 are fixedly connected to two symmetrical connecting blocks 903. The two semi-annular blocks 901 are combined to form a complete ring and are sleeved on the lifting threaded rod 6, so that the limiting posts 902 are inserted into the insertion holes of the lifting threaded rod 6 and the plug 10. At the same time, the two semi-annular blocks 901 are fixed together by two bolts.

[0047] Working principle: After the device is placed on a flat surface, pushing the fixed rod 216 moves the slider 208 and lifts the fixed plate 206 via the hinge rod 207. This causes the fixed plate 206 to move the circular piston 204 on the movable column 205, drawing air from the circular suction cup 202, causing the suction cup 202 to adhere to the flat surface. This stabilizes the device on the surface, increasing its stability during laser 3D printing and effectively preventing errors in the printed product caused by shaking, thus affecting product quality. When it is necessary to remove or replace the lifting threaded rod 6, [the following steps are taken]. The rotating and pressing threaded rod 805 drives the clamping block 803 away from the threaded tube 7, so that the pin 804 is no longer stuck with the threaded tube 7. It also controls the removal of the bolts on the two connecting blocks 903, causing the two semi-annular blocks 901 to separate. The two semi-annular blocks 901 do not limit the lifting threaded rod 6 and the plug 10. The operator can directly lift the lifting threaded rod 6 and move it upward to remove the lifting threaded rod 6, thus completing the disassembly of the lifting threaded rod 6. This allows the device to replace the lifting threaded rod 6 directly without removing the wrapping and covering parts, increasing the convenience of the device's maintenance and improving the efficiency of the maintenance work.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A platform stabilizing device for laser 3D printing, comprising a three-dimensional printing platform (1), characterized in that: The bottom of the three-dimensional printing platform (1) is provided with four stabilizing mechanisms (2), the stabilizing mechanism (2) comprises a fixed cylinder (201), the fixed cylinder (201) is fixedly connected to the bottom surface of the three-dimensional printing platform (1), the bottom surface of the fixed cylinder (201) is fixedly connected with a circular suction cup (202), the inner wall of the fixed cylinder (201) is slidably connected with a circular piston (204), the upper surface of the circular piston (204) is fixedly connected with a movable column (205), the inner wall of the fixed cylinder (201) is fixedly connected with a fixed blocking block (203), the movable column (205) penetrates through the outer surface of the fixed blocking block (203) and is slidably connected with the fixed blocking block (203); The outer surface of the three-dimensional printing platform (1) is fixedly connected with two limiting rods (3), the upper side of the three-dimensional printing platform (1) is provided with a fixed frame (4), both of the limiting rods (3) are fixedly connected to the outer surface of the fixed frame (4), the outer part of both of the limiting rods (3) is provided with a clamping mechanism (8), the clamping mechanism (8) comprises a movable frame (801), the outer surface of the movable frame (801) is fixedly connected with a planar printer (11), the inner wall of the movable frame (801) is slidably connected with a threaded block (802), the outer surface of the threaded block (802) is fixedly connected with a clamping block (803), the outer surface of the clamping block (803) is fixedly connected with a latch (804); A lifting threaded rod (6) is arranged between the two limiting rods (3), the outer surface of the lifting threaded rod (6) is threadedly connected with a threaded tube (7), the outer surface of the threaded tube (7) is provided with two clamping grooves matched with the latch (804), the outer part of the lifting threaded rod (6) is provided with a limiting mechanism (9), the limiting mechanism (9) comprises two half-ring blocks (901), the outer surface of both of the half-ring blocks (901) is fixedly connected with a limiting column (902).

2. The platform stabilizing device for laser 3D printing according to claim 1, characterized in that: The upper end of the movable column (205) is fixedly connected with a fixed plate (206), the fixed plate (206) is slidably connected with the fixed cylinder (201), one end of the fixed plate (206) is hingedly connected with a hinged rod (207) through a pin shaft, the end of the hinged rod (207) away from the fixed plate (206) is hingedly connected with a sliding block (208) through a pin shaft.

3. The platform stabilizing device for laser 3D printing according to claim 2, characterized in that: The outer surface of the fixed cylinder (201) is fixedly connected with a sliding rail (209), the sliding block (208) is slidably connected to the inner wall of the sliding rail (209), the outer surface of the sliding block (208) is fixedly connected with a telescopic spring I (210), the end of the fixed cylinder (201) away from the sliding block (208) is fixedly connected to the inner wall of the sliding rail (209), the outer surface of the sliding block (208) is fixedly connected with a fixed long rod (216).

4. The platform stabilizing device for laser 3D printing according to claim 3, characterized in that: The outer surface of the sliding rail (209) is fixedly connected with a sleeve (211), two reinforcing ribs (212) are fixedly connected between the sleeve (211) and the fixed cylinder (201), the inner wall of the sleeve (211) is slidably connected with a wedge-shaped lock tongue (213), and the outer surface of the fixed long rod (216) is provided with a restricted groove (217) matched with the wedge-shaped lock tongue (213).

5. The platform stabilizing device for laser 3D printing according to claim 4, characterized in that: The outer surface of the wedge-shaped lock tongue (213) is fixedly connected with a telescopic spring two (215), one end of the telescopic spring two (215) away from the wedge-shaped lock tongue (213) is fixedly connected to the inner top wall of the sleeve (211), the outer surface of the wedge-shaped lock tongue (213) is fixedly connected with a pull rod (214), the outer surface of the sleeve (211) is provided with a sliding groove matched with the pull rod (214), and the pull rod (214) is slidably connected with the sleeve (211) through the sliding groove of the sleeve (211).

6. The platform stabilizing device for laser 3D printing of claim 1, wherein: The outer surface of the movable frame (801) is fixedly connected with two fixed pipes (806), the movable frame (801) is provided with an extrusion threaded rod (805) outside, both the fixed pipes (806) are rotatably connected with the extrusion threaded rod (805), and the extrusion threaded rod (805) is engaged with the threaded block (802).

7. The platform stabilizing device for laser 3D printing of claim 1, wherein: The upper surface of the fixed frame (4) is fixedly connected with a motor (5), the output end of the motor (5) is fixedly connected with a female connector (10), and the upper end of the lifting threaded rod (6) is provided with a female socket (12) matched with the female connector (10).

8. The platform stabilizing device for laser 3D printing of claim 1, wherein: The bottom end of the lifting threaded rod (6) is fixedly connected with a square connector (14), the outer surface of the three-dimensional printing platform (1) is rotatably connected with a rotating circular plate (13), and the outer surface of the rotating circular plate (13) is provided with a square groove matched with the square connector (14).

9. The platform stabilizing device for laser 3D printing according to claim 7, characterized in that: The female socket (12) and the female connector (10) are both provided with a plug hole matched with the limiting column (902), and the outer surfaces of the two half-ring blocks (901) are both fixedly connected with two symmetrical connecting blocks (903).

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