A leveling device for a 3D printing device and a 3D printing device

Abstract

The present invention relates to the technical field of 3D printing, and provides a leveling device and a 3D printing device for a 3D printing device. The leveling device of the 3D printing device includes a printing platform and a moving platform, and further includes screws, a distance sensor, a temperature control mechanism, a purging mechanism, and a collection box. There are four screws, and the screws are threadedly connected to the moving platform. The distance sensor is arranged on the print head and is used to measure the distance between the print head and the printing platform. The temperature control mechanism is used to control the temperature of the printing platform to reduce the temperature change during printing of the printing platform. The purging mechanism uses the airflow generated by the temperature control mechanism to purge the surface of the printing platform. The collection box is arranged on the moving platform, and the collection box is located on one side of the printing platform away from the purging box. Through the above technical solution, the problems in the prior art that temperature and impurities affect leveling and reduce the printing accuracy are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printing, and specifically, to a leveling device for a 3D printing device and a 3D printing device. Background Art

[0002] 3D printing (3DP), also known as additive manufacturing technology, is a technology for manufacturing solid parts by the method of layer-by-layer material accumulation based on three-dimensional CAD data. First, a required three-dimensional model is designed using computer-aided modeling software (such as CAD software), and then this model is processed with slicing software. The 3D printer will select a forming method from a variety of forming principles, and print the raw materials layer by layer according to these working paths. When the two-dimensional thin slices are stacked layer by layer, the designed three-dimensional model is manufactured and formed.

[0003] In most common 3D printers currently, most problems occur due to leveling problems. The leveling of 3D printers is very important during printing. The traditional leveling device uses a knob for three-point or four-point leveling, that is, manual adjustment. The knob is rotated in turn at the four corners of the printing platform to make the printing platform tend to be stable. After multiple adjustments, it is finally adjusted to a parallel state with the nozzle to maintain printing accuracy. The adjustment method is relatively cumbersome, takes a long time, and the leveling effect mainly depends on human judgment, with low accuracy. Current printers are also equipped with an automatic leveling system, which uses a pressure sensor or a photoelectric sensor, etc. to detect the state of the printing platform, and then controls the motor screw, etc. to adjust the state of the printing platform according to the detection results. After adjustment, a re-inspection is carried out until the printing platform is adjusted. The accuracy and efficiency have been greatly improved. When adjusting the printing platform, if there are printing residues or other impurities on the printing platform, it will affect the detection results. And due to thermal expansion and contraction, at different ambient temperatures, the state of the printing platform will be different. Especially before starting up, the temperature of the printing platform is at room temperature. During printing, hot materials are stacked on the printing platform, the printing platform is heated, and the positions in contact with the printing material heat up first. The temperatures of different positions on the printing platform are unbalanced, which exacerbates the deformation of the printing platform and causes a difference from the state during previous leveling, that is, the parallel state between the nozzle and the printing platform is damaged, resulting in a decrease in the accuracy of the printed object. Therefore, we propose a leveling device for a 3D printing device and a 3D printing device, which can improve the leveling accuracy of the printing platform and at the same time reduce the influence of temperature difference on the leveling of the printing platform. Summary of the Invention

[0004] The present invention proposes a leveling device for a 3D printing device and a 3D printing device, which solves the problem in the prior art that temperature and impurities affect leveling and reduce the accuracy of printing.

[0005] The technical solution of the present invention is as follows:

[0006] The leveling device of the 3D printing device includes a printing platform and a moving platform, and further includes:

[0007] Screws. There are four screws, and the four screws are respectively rotatably arranged at the four corner positions of the bottom of the printing platform. The screws are threadedly connected to the moving platform;

[0008] A distance sensor. The distance sensor is arranged on the print head and is used to measure the distance between the print head and the printing platform;

[0009] A temperature control mechanism. The temperature control mechanism is used to control the temperature of the printing platform and reduce the temperature change of the printing platform during printing. The temperature control mechanism includes:

[0010] A temperature control box;

[0011] A thermostat. The thermostat is arranged inside the temperature control box and is used to control the temperature inside the temperature control box;

[0012] A blower. The blower is arranged inside the temperature control box and is used to blow the air inside the temperature control box to the printing platform;

[0013] A purging mechanism. The purging mechanism uses the airflow generated by the temperature control mechanism to purge the surface of the printing platform. The purging mechanism includes:

[0014] A purging box. The purging box is arranged on the moving platform, and the purging box is communicated with the temperature control box;

[0015] A purging pipe. The purging pipe is movably arranged on the moving platform, and the purging pipe is located above the printing platform;

[0016] Nozzles. There are multiple nozzles, and the nozzles are communicated with the purging pipe;

[0017] A collection box. The collection box is arranged on the moving platform, and the collection box is located on the side of the printing platform away from the purging box.

[0018] To improve the heating efficiency of the printing platform and reduce the preheating time, an auxiliary heating component is further included. The auxiliary heating component includes:

[0019] A heating box. The heating box is arranged below the printing platform, the heating box is communicated with the temperature control box, and the purging box is communicated with the heating box;

[0020] A heater. The heater is arranged inside the heating box.

[0021] To reduce the splashing of impurities during purging, baffles are provided on both sides of the printing platform along the direction perpendicular to the moving direction of the purging pipe.

[0022] To further reduce the splashing of impurities during purging, a shielding assembly is further included, and the shielding assembly includes:

[0023] A moving frame, which is movably arranged on the frame body;

[0024] A telescopic cover, which is arranged between the moving frame and the frame body, and the edge of the telescopic cover contacts the baffle.

[0025] To timely discharge the impurities in the collection box, a slag discharging assembly is further included, and the slag discharging assembly includes:

[0026] A discharging box, which is arranged below the collection box, and the discharging box is communicated with a slag discharging pipe;

[0027] A connecting pipe, the discharging box is communicated with the bottom of the collection box through the connecting pipe, and a valve is arranged on the connecting pipe;

[0028] The interior of the collection box contains liquid.

[0029] The present invention also proposes a 3D printing device, which uses the leveling device of the above-mentioned 3D printing device, and further includes:

[0030] A frame body, on which a plurality of transparent plates are arranged, an extraction opening for taking out the workpiece is opened on the frame body, and the temperature control box is arranged on the frame body;

[0031] A Z-axis driving lead screw, which is arranged on the frame body;

[0032] An X-axis driving lead screw, which is arranged on the Z-axis driving lead screw, and the print head is arranged on the X-axis driving lead screw;

[0033] A Y-axis driving lead screw, which is arranged on the frame body, and the moving platform is arranged on the Y-axis driving lead screw.

[0034] The working principle and beneficial effects of the present invention are as follows:

[0035] 1. In the present invention, the X-axis drive screw and the Z-axis drive screw drive the print head to move up and down and horizontally, and the Y-axis drive screw drives the moving platform to drive the printing platform to move longitudinally, enabling the printing of workpieces. At the same time, the print head drives the distance sensor to move within the range of the printing platform, detects the distances between various positions of the printing platform and the distance sensor, drives the corresponding screw to rotate according to the distance difference, adjusts the heights of the four corner positions of the printing platform, and through re-detection by the distance sensor, makes the movement of the printing platform and the print head parallel.

[0036] 2. In the present invention, the temperature controller regulates the temperature inside the temperature control box, and the fan enables air to flow inside the frame and the temperature control box to maintain a constant temperature inside the frame, so that the printing platform is maintained at a relatively high temperature state during printing. At the same time, before printing, the printing platform can be quickly heated by the heater to reach the temperature state during printing within a short time. After the thermal deformation is completed, the printing platform is leveled again to reduce the deformation of the printing platform caused by temperature changes and the resulting reduction in printing accuracy.

[0037] 3. In the present invention, by moving the purge pipe, impurities and dust on the surface of the printing platform can be purged towards the collection box. The baffle and the telescopic cover enclose the area above the printing platform to prevent dust and impurities from splashing out. The impurities and dust enter the interior of the collection box, and the liquid adheres to the impurities and dust to prevent the dust from escaping again. By opening the valve of the connecting pipe, the impurities in the collection box enter the interior of the discharge box along with the liquid and are discharged through the slag discharge pipe.

[0038] 4. Therefore, compared with the 3D printing equipment in the prior art that simply uses the cooperation of sensors and screws, in the present invention, the temperature controller regulates the temperature inside the temperature control box, the fan enables the gas inside the frame and the temperature control box to flow, so that the temperature inside the frame is in a relatively constant state, the heater quickly heats the printing platform to reduce the deformation caused by temperature changes of the printing platform. At the same time, the blowing pipe moves to blow the dust and impurities on the surface of the printing platform into the interior of the collection box. The baffle and the telescopic cover enclose the printing platform, the liquid in the collection box adsorbs the dust, and by opening the valve of the connecting pipe, the dust enters the interior of the discharge box along with the liquid and is discharged from the slag discharge pipe, reducing the influence of temperature and impurities on leveling and ensuring the accuracy of printing. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The following further describes the present invention in detail with reference to the drawings and specific embodiments.

[0040] Figure 1 is a schematic structural view of the first perspective of the present invention;

[0041] Figure 2 is a schematic structural view of the second perspective of the present invention;

[0042] Figure 3 Schematic diagram of the printing platform, mobile platform, screw, and first motor of the present invention;

[0043] Figure 4 Schematic diagram of the temperature control mechanism, purging mechanism, collection box, and slag discharge assembly of the present invention;

[0044] Figure 5 Schematic diagram of the temperature control mechanism, purging mechanism, and auxiliary heating assembly of the present invention;

[0045] Figure 6 Schematic diagram of the baffle, shielding assembly, and slag discharge assembly of the present invention;

[0046] Figure 7 of the present invention Figure 1 Partial enlarged schematic diagram at position A in

[0047] In the figure:

[0048] 1. Printing platform; 2. Mobile platform; 3. Screw; 4. First motor; 5. Distance sensor; 6. Collection box; 7. Baffle; 8. Frame; 9. Z-axis drive lead screw; 10. X-axis drive lead screw; 11. Y-axis drive lead screw; 12. Opening and closing door; 13. Print head;

[0049] 101. Temperature control box; 102. Temperature controller; 103. Fan;

[0050] 201. Purging box; 202. Purging pipe; 203. Nozzle; 204. First electric cylinder;

[0051] 301. Heating box; 302. Heater;

[0052] 401. Mobile frame; 402. Telescopic cover; 403. Second electric cylinder;

[0053] 501. Discharge box; 502. Connecting pipe; 503. Slag discharge pipe. Detailed implementation manners

[0054] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0055] Embodiment 1, as Figures 1 to 7As shown in the figure, this embodiment proposes a leveling device for a 3D printing device, which includes a printing platform 1 and a moving platform 2, and also includes a screw 3, a distance sensor 5, a temperature control mechanism, a purging mechanism and a collection box 6. Compared with the way of simply using a sensor and a screw 3 in the existing 3D printing device, in the present invention, the temperature inside the temperature control box 101 is regulated by a thermostat 102, and the gas in the frame 8 and the temperature control box 101 is made to flow by a blower 103, so that the temperature inside the frame 8 is in a relatively constant state. The printing platform 1 is quickly heated by a heater 302 to reduce the deformation caused by the temperature change of the printing platform 1. At the same time, the blowing pipe moves to blow the dust and impurities on the surface of the printing platform 1 into the interior of the collection box 6. The printing platform 1 is surrounded by a baffle 7 and a telescopic cover 402, and the dust is adsorbed by the liquid in the collection box 6. By opening the valve of the connecting pipe 502, the dust enters the interior of the discharge box 501 along with the liquid and is discharged from the slag discharge pipe 503, reducing the influence of temperature and impurities on leveling and ensuring the printing accuracy.

[0056] As Figures 1 to 3 shown, four screws 3 are provided, and the four screws 3 are respectively rotatably arranged at the four corner positions of the bottom of the printing platform 1. A motor 1 4 is arranged at the bottom of the printing platform 1. The screw 3 is arranged at the output end of the motor 1 4 through a reducer. The screw 3 is threadedly connected to the moving platform 2. By driving the screw 3 to rotate by the motor 1 4, and through the threaded connection between the screw 3 and the moving platform 2, the motor 1 4 and the corners of the printing platform 1 can be driven to lift, so as to adjust the height of each position of the printing platform 1. The pitch of the screw 3 is small, and fine adjustment of the printing platform 1 can be realized. The printing platform 1 has a certain elasticity, and finally tends to be parallel to the moving plane of the print head 13 under the driving and lifting of the screw 3.

[0057] As Figures 1 to 3As shown, the distance sensor 5 is arranged on the print head 13 and is used to measure the distance between the print head 13 and the printing platform 1. The print head 13 drives the distance sensor 5 to move. At the same time, through the movement of the moving platform 2 and the printing platform 1 itself, the distance sensor 5 monitors the state of each position of the printing platform 1. According to the detected height change of the printing platform 1, the first motor 4 is controlled to start, driving the screw 3 to rotate, so as to adjust the height of the printing platform 1, and make the printing platform 1 adjusted to a state parallel to the print head 13. After the adjustment is completed, the height of the printing platform 1 is rechecked by the distance sensor 5 to ensure the parallel state of the printing platform 1 and the print head 13. The distance sensor 5 can be an optoelectronic sensor, which emits light and detects the reflection of the light to judge the distance difference between the printing platform 1 and the distance sensor 5, that is, the print head 13. When the distance difference exceeds a certain range, the distance sensor 5 sends a signal to notify the control system to make adjustments. The distance sensor 5 and the control system are well-known prior arts to those skilled in the art and are not the main innovation points of this embodiment, so they will not be elaborated here.

[0058] As Figures 1 to 5 shown, the temperature control mechanism is used to control the temperature of the printing platform 1 and reduce the temperature change during printing of the printing platform 1. The temperature control mechanism includes a temperature control box 101, a temperature controller 102 and a fan 103. The temperature control box 101 is installed on the frame 8. The temperature controller 102 is arranged inside the temperature control box 101 and is used to control the temperature inside the temperature control box 101. The fan 103 is arranged inside the temperature control box 101 and is used to blow the air inside the temperature control box 101 to the printing platform 1. The temperature inside the temperature control box 101 can be controlled through the temperature controller 102, and the air inside the temperature controller 102 is blown into the inside of the frame 8 through the fan 103, so as to control the temperature of the printing environment, especially to control the temperature of the printing platform 1, and keep it at the printing temperature, reducing the deformation of the printing platform 1 caused by temperature changes, thereby ensuring the printing accuracy.

[0059] As Figures 1 to 7As shown in the figure, the purging mechanism uses the airflow generated by the temperature control mechanism to purge the surface of the printing platform 1. The purging mechanism includes a purging box 201, a purging pipe 202, and a nozzle 203. The purging box 201 is arranged on the moving platform 2 through a support frame. The purging box 201 is communicated with the temperature control box 101. The purging pipe 202 is movably arranged on the moving platform 2. An electric cylinder 204 is arranged on the moving platform 2 through a mounting frame. The purging pipe 202 is arranged at the output end of the electric cylinder 204. The purging pipe 202 is located above the printing platform 1. A plurality of nozzles 203 are arranged. The nozzles 203 are communicated with the purging pipe 202. The electric cylinder 204 can drive the purging pipe 202 to move above the printing platform 1. The air at a specific temperature in the temperature control box 101 is sent into the interior of the purging pipe 202 by the blower 103 and blown onto the printing platform 1 through the nozzles 203. As the purging pipe 202 moves, the dust and impurities on the surface of the printing platform 1 are blown off. At the same time, the air blown by the nozzles 203 can control the temperature of the printing platform 1, assisting the printing platform 1 to be at a specific temperature, that is, the printing temperature, so that the temperature of the printing platform 1 is constant during and after leveling, reducing the deformation of the printing platform 1 caused by temperature changes after leveling and resulting in a reduction in printing accuracy.

[0060] As Figures 1 to 6 shown in the figure, a collection box 6 is arranged on the moving platform 2. The collection box 6 is located on the side of the printing platform 1 away from the purging box 201. A collection port is opened at the top of the collection box 6. By moving the purging pipe 202 towards the collection box 6, the impurities on the surface of the printing platform 1 are blown into the interior of the collection box 6 through the collection port for collection.

[0061] As Figures 1 to 5 shown in the figure, to improve the heating efficiency of the printing platform 1 and reduce the preheating time, an auxiliary heating component is further included. The auxiliary heating component includes a heating box 301 and a heater 302. The heating box 301 is arranged below the printing platform 1. The heating box 301 is communicated with the temperature control box 101. The purging box 201 is communicated with the heating box 301. The heater 302 is arranged inside the heating box 301. Before leveling, the bottom of the printing platform 1 is heated by the heater 302. At the same time, the blower 103 blows air into the interior of the heating box 301, and at the same time, the hot air in the heating box 301 is blown into the interior of the purging pipe 202. The hot air is blown onto the printing platform 1 through the nozzles 203. While purging the printing platform 1, the printing platform 1 is heated, further improving the temperature control efficiency of the printing platform 1.

[0062] As Figures 1 to 6As shown in the figure, to reduce the splashing of impurities during purging, baffles 7 are provided on both sides of the printing platform 1 along the direction perpendicular to the moving direction of the purging pipe 202. The two sides of the printing platform 1 are blocked by the baffles 7. At the same time, to further reduce the splashing of impurities during purging, a shielding assembly is further included. The shielding assembly includes a moving frame 401 and a telescopic cover 402. The moving frame 401 is movably arranged on the frame body 8. An electric cylinder two 403 is arranged on the frame body 8. The moving frame 401 is arranged at the output end of the electric cylinder two 403. The telescopic cover 402 is arranged between the moving frame 401 and the frame body 8. The edge of the telescopic cover 402 contacts the baffle 7. The electric cylinder two 403 can drive the moving frame 401 and the telescopic cover 402 to move towards the printing platform 1, so that the telescopic cover 402 shields between the two baffles 7. The moving frame 401 and the telescopic cover 402 are in a shape of '7', blocking the top of the baffle 7 and the side of the baffle 7 close to the collection box 6, avoiding the escape of dust and impurities when the purging pipe 202 purges the printing platform 1 and causing pollution inside the frame body 8. During the printing process, the electric cylinder two 403 drives the moving frame 401 to be in a position close to the frame body 8 to avoid obstructing the printing of the print head 13.

[0063] As Figures 1 to 6 shown, to timely discharge the impurities in the collection box 6, a slag discharging assembly is further included. The slag discharging assembly includes a discharging box 501 and a connecting pipe 502. The discharging box 501 is arranged below the collection box 6. The discharging box 501 is connected with a slag discharging pipe 503. The discharging box 501 is connected to the bottom of the collection box 6 through the connecting pipe 502. A valve is arranged on the connecting pipe 502. There is liquid in the collection box 6. For example, water or oil or other liquid can be placed inside the collection box 6. After dust and impurities enter the collection box 6, the liquid adsorbs the impurities and dust, preventing them from being lifted again. At the same time, the valve is regularly opened to make the dust and impurities in the collection box 6 flow into the inside of the discharging box 501 along with the liquid, and then discharged from the frame body 8 through the slag discharging pipe 503, and recycled after being cleaned. A transfer pump is arranged outside the frame body 8. A liquid adding pipe is arranged on the collection box 6. The liquid adding pipe is connected to the transfer pump through a telescopic hose. The transfer pump sends the liquid to the liquid adding pipe to add new liquid to the inside of the collection box 6.

[0064] The working principle or usage process of the leveling device of this 3D printing device is as follows:

[0065] First, turn on the thermostat 102 and the heater 302. The heater 302 releases heat to quickly heat the printing platform 1. The thermostat 102 controls the temperature inside the temperature control box 101. The blower 103 blows the air inside the temperature control box 101 into the interior of the heating box 301, and at the same time sends the high-temperature air inside the heating box 301 to the purging pipe 202. The electric cylinder two 403 drives the moving frame 401 to move, and the telescopic cover 402 extends to shield the tops and edges of the two baffles 7. The electric cylinder one 204 drives the purging pipe 202 to move towards the collection box 6, blowing the impurities and dust on the surface of the printing platform 1 into the interior of the collection box 6. The dust and impurities are adsorbed by the liquid. Then, open the valve to allow the impurities to enter the interior of the discharge box 501 with the liquid and be discharged through the slag discharge pipe 503. The electric cylinder two 403 drives the moving frame 401 to return to the original position, compressing the telescopic cover 402. The electric cylinder one 204 drives the purging pipe 202 to return to the original position, and the transfer pump sends new liquid into the interior of the collection box 6;

[0066] Level the printing platform 1. First, lower the print head 13 and the distance sensor 5 to a certain height. By moving the moving platform 2 in the Y-axis and the print head 13 in the X-axis, detect the distances between multiple points on the printing platform 1 and the print head 13. The distance sensor 5 senses the difference in distance and controls the corresponding motor one 4 to start, driving the screw 3 to rotate a certain angle to adjust the height of the corresponding position of the printing platform 1. After the adjustment is completed, the print head 13 and the printing platform 1 move again to detect the states of various points on the printing platform 1 to ensure that the printing platform 1 is adjusted to a state parallel to the print head 13, and then printing can be carried out.

[0067] Example 2, as Figures 1 to 7As shown in the figure, this embodiment discloses a 3D printing device that uses the leveling device of the above-mentioned 3D printing device. It further includes a frame 8, a Z-axis driving lead screw 9, an X-axis driving lead screw 10, and a Y-axis driving lead screw 11. A plurality of transparent plates are arranged on the frame 8. Through the transparent plates, the internal space of the frame 8, that is, the printing space, is isolated from the external environment to form a sealed space. The temperature of the internal space of the frame 8 is controlled by a temperature control box, so that the printing platform 1 is in a relatively stable temperature state, avoiding deformation caused by temperature changes, which may lead to the printing material deviating from the predetermined track during the printing process, thereby ensuring the printing accuracy. An outlet for taking out the workpiece is provided on the frame 8, and an opening and closing door 12 is arranged at the outlet. The outlet can be opened and closed through the opening and closing door 12, and the printed workpiece can be taken out from the outlet. The temperature control box 101 is arranged on the frame 8, the Z-axis driving lead screw 9 is arranged on the frame 8, the X-axis driving lead screw 10 is arranged on the nut of the Z-axis driving lead screw 9, the printing head 13 is arranged on the nut of the X-axis driving lead screw 10, the Y-axis driving lead screw 11 is arranged on the frame 8, and the moving platform 2 is arranged on the nut of the Y-axis driving lead screw 11. The Z-axis driving lead screw 9 can drive the X-axis driving lead screw 10 to lift, that is, adjust the height of the printing head 13 and the distance sensor 5. The X-axis driving lead screw 10 can drive the printing head 13 and the distance sensor 5 to move in the X-axis direction, and the Y-axis driving lead screw 11 can drive the printing platform 1 to move in the Y-axis direction, so that the printing head 13 can be in various positions above the printing platform 1.

[0068] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A leveling device for a 3D printing device, comprising a printing platform (1) and a moving platform (2), characterized in that: Also includes: Screw rods (3), four of which are provided, and the four screw rods (3) are rotatably provided at the four corners of the bottom of the printing platform (1), and the screw rods (3) are threadedly connected to the movable platform (2); A distance sensor (5), the distance sensor (5) being arranged on the print head (13) and being used to measure the distance between the print head (13) and the printing platform (1); A temperature control mechanism, the temperature control mechanism is used to control the temperature of the printing platform (1) to reduce the temperature change of the printing platform (1) during printing, the temperature control mechanism comprising: Temperature control box (101); A temperature controller (102), the temperature controller (102) being arranged inside the temperature control box (101) and being used to control the temperature inside the temperature control box (101); a fan (103), the fan (103) being arranged inside the temperature control box (101) and being used to blow air inside the temperature control box (101) to the printing platform (1); A purge mechanism, wherein the purge mechanism uses the airflow generated by the temperature control mechanism to purge the surface of the printing platform (1), and the purge mechanism comprises: A purge box (201), the purge box (201) being arranged on the mobile platform (2), the purge box (201) being in communication with the temperature control box (101); A purge pipe (202), the purge pipe (202) being movably arranged on the movable platform (2), the purge pipe (202) being located above the printing platform (1); A nozzle (203), wherein a plurality of nozzles (203) are provided, and the nozzles (203) are connected to the purge pipe (202); A collection box (6), the collection box (6) being arranged on the mobile platform (2); An auxiliary heating component, the auxiliary heating component comprising: A heating box (301), the heating box (301) being arranged below the printing platform (1), the heating box (301) being connected to the temperature control box (101), and the purge box (201) being connected to the heating box (301); A heater (302), wherein the heater (302) is arranged inside the heating box (301).

2. The leveling device for 3D printing equipment according to claim 1, characterized in that: Baffles (7) are provided on both sides of the printing platform (1) perpendicular to the moving direction of the purge tube (202).

3. The leveling device for 3D printing equipment according to claim 2, characterized in that: Also included is a shielding component, the shielding component comprising: A movable frame (401), wherein the movable frame (401) is movably arranged on the frame body (8); A telescopic cover (402), wherein the telescopic cover (402) is arranged between the movable frame (401) and the frame body (8), and the telescopic cover (402) is in contact with an edge of the baffle (7).

4. The leveling device for 3D printing equipment according to claim 3, characterized in that: Also included is a slag discharge assembly, the slag discharge assembly comprising: A discharge box (501), the discharge box (501) being arranged below the collection box (6), the discharge box (501) being connected to a slag discharge pipe (503); A connecting pipe (502), the discharge box (501) is connected to the bottom of the collection box (6) through the connecting pipe (502), and a valve is provided on the connecting pipe (502); The collecting box (6) contains liquid inside.

5. A 3D printing device, using the leveling device of the 3D printing device according to claim 4, characterized in that: Also includes: A frame (8), wherein a plurality of transparent plates are arranged on the frame (8), an outlet for taking out workpieces is opened on the frame (8), and the temperature control box (101) is arranged on the frame (8); A Z-axis driving screw (9), wherein the Z-axis driving screw (9) is arranged on the frame (8); An X-axis driving screw (10), wherein the X-axis driving screw (10) is arranged on the Z-axis driving screw (9), and the print head (13) is arranged on the X-axis driving screw (10); A Y-axis driving screw (11), wherein the Y-axis driving screw (11) is arranged on the frame (8), and the mobile platform (2) is arranged on the Y-axis driving screw (11).

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