Leveling device of 3D printing equipment and 3D printing equipment

Abstract

The invention relates to the technical field of 3D printing, and provides a leveling device of 3D printing equipment and the 3D printing device.The leveling device of the 3D printing equipment comprises a printing platform and a moving platform and further comprises four screw rods, a distance sensor, a temperature regulation and control mechanism, a blowing mechanism and a collecting box, the screw rods are in threaded connection with the moving platform, and the distance sensor is arranged on the moving platform; the distance sensor is arranged on the printing head and used for measuring the distance between the printing head and the printing platform, the temperature regulation and control mechanism is used for regulating and controlling the temperature of the printing platform, the temperature change of the printing platform during printing is reduced, and the purging mechanism purges the surface of the printing platform through airflow generated by the temperature regulation and control mechanism. The collecting box is arranged on the moving platform and located on the side, away from the blowing box, of the printing platform, and through the technical scheme, the problems that in the prior art, temperature and impurities affect leveling, and the printing accuracy is reduced are solved.

Description

Technical Field

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

[0002] 3D printing (3DP), also known as additive manufacturing technology, is a technology that manufactures physical parts based on three-dimensional CAD data by accumulating materials layer by layer. First, use computer-aided modeling software (such as CAD software) to design a required three-dimensional model, and then use slicing software to process the data of this model. The 3D printer will select a molding method from a variety of molding principles and print the raw materials layer by layer according to these working paths. When the two-dimensional sheets are stacked together layer by layer, the designed three-dimensional model is manufactured.

[0003] Most of the problems with common 3D printers at present are due to leveling problems. The leveling of 3D printers is very important in printing. The traditional leveling device uses a knob for three-point or four-point leveling, that is, manual adjustment. The knob is turned in turn at the four corners of the printing platform to make the printing platform stable. After multiple adjustments, it is finally adjusted to a state parallel to the nozzle to maintain printing accuracy. The adjustment method is relatively cumbersome and time-consuming. The leveling effect also mainly relies on judgment, and the accuracy is low. Today's printers are also equipped with automatic leveling systems, which use pressure sensors or photoelectric sensors to detect the status of the printing platform, and then control the motor screw to adjust the status of the printing platform according to the detection results. After adjustment, 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, the state of the printing platform will be different at different ambient temperatures, especially before starting up, the temperature of the printing platform is at room temperature. During the printing process, hot materials are stacked on the printing platform, the printing platform is heated, and the position in contact with the printing material heats up first. The temperature of each position of the printing platform is unbalanced, which aggravates the deformation of the printing platform and produces a difference from the previous leveling state, that is, the parallel state between the nozzle and the printing platform is destroyed, resulting in a decrease in the accuracy of the printed object. Therefore, we propose a leveling device and a 3D printing device for 3D printing equipment, which can improve the leveling accuracy of the printing platform and reduce the influence of temperature differences on the leveling of the printing platform. Summary of the invention

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

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

[0006] A leveling device for a 3D printing device, comprising a printing platform and a moving platform, further comprising:

[0007] Screws, four of which are provided, and the four screws are rotatably provided at the four corners of the bottom of the printing platform, respectively, and the screws are threadedly connected to the movable platform;

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

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

[0010] Temperature control box;

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

[0012] A fan, the fan is arranged inside the temperature control box and is used to blow the air in the temperature control box to the printing platform;

[0013] A purge mechanism, wherein the purge mechanism uses the airflow generated by the temperature control mechanism to purge the surface of the printing platform, and the purge mechanism includes:

[0014] A purge box, the purge box is arranged on the mobile platform, and the purge box is connected to the temperature control box;

[0015] A purge pipe, the purge pipe is movably arranged on the movable platform, and the purge pipe is located above the printing platform;

[0016] A nozzle, wherein a plurality of nozzles are provided, and the nozzles are connected to the purge pipe;

[0017] A collection box is arranged on the movable platform, and the collection box is located on a side of the printing platform away from the purge box.

[0018] In order to improve the heating efficiency of the printing platform and reduce the preheating time, an auxiliary heating component is also included, and the auxiliary heating component includes:

[0019] A heating box, the heating box is arranged below the printing platform, the heating box is connected to the temperature control box, and the purge box is connected to the heating box;

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

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

[0022] In order to further reduce the splashing of impurities during purging, a shielding component is also included, and the shielding component includes:

[0023] A mobile frame, wherein the mobile frame is movably arranged on the frame body;

[0024] A telescopic cover is arranged between the movable frame and the frame body, and the telescopic cover is in contact with an edge of the baffle.

[0025] In order to discharge the impurities in the collection box in time, a slag discharge component is also included, and the slag discharge component includes:

[0026] A discharge box, the discharge box is arranged below the collecting box, and the discharge box is connected to a slag discharge pipe;

[0027] A connecting pipe, through which the discharge box is connected to the bottom of the collection box, and a valve is provided on the connecting pipe;

[0028] The collecting box contains liquid.

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

[0030] A frame, wherein a plurality of transparent plates are arranged on the frame, an outlet for taking out workpieces is opened on the frame, and the temperature control box is arranged on the frame;

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

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

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

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

[0035] 1. In the present invention, the print head is driven to move up and down and move laterally through the X-axis driving screw and the Z-axis driving screw, and the mobile platform is driven to drive the printing platform to move longitudinally through the Y-axis driving screw, so that the printing of the workpiece can be realized. At the same time, the print head drives the distance sensor to move within the range of the printing platform, and the distance between each position of the printing platform and the distance sensor is detected. The corresponding screw is driven to rotate according to the distance difference, and the height of the four corners of the printing platform is adjusted. The distance sensor is used for detection again to make the movement of the printing platform and the print head in a parallel state.

[0036] 2. In the present invention, the temperature in the temperature control box is regulated by a temperature controller, and the air is made to flow inside the frame and the temperature control box by a fan to maintain a constant temperature inside the frame, so that the printing platform is maintained at a higher temperature state during printing. At the same time, before printing, the printing platform can be quickly heated by a heater so that it reaches the temperature state during printing in a shorter time. After the deformation due to heat is completed, the printing platform is leveled to reduce the deformation of the printing platform caused by temperature changes and the reduction in printing accuracy caused by it.

[0037] 3. In the present invention, impurities and dust on the surface of the printing platform can be purged to the collecting box by moving the purge tube, and the top of the printing platform is enclosed by a baffle and a telescopic cover to prevent dust and impurities from splashing out and entering the interior of the collecting box. The impurities and dust are adhered to by liquid to prevent the dust from escaping again, and the connecting tube is opened by a valve, and the impurities in the collecting box enter the interior of the discharge box 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 sensors and screws, the present invention controls the temperature inside the temperature control box through a temperature controller, and uses a fan to make the gas in the frame and the temperature control box flow, so that the temperature inside the frame is in a relatively constant state, and the printing platform is quickly heated by the heater to reduce the deformation caused by the temperature change of the printing platform. At the same time, the blow pipe moves to blow the dust and impurities on the surface of the printing platform into the interior of the collection box, and the printing platform is enclosed by a baffle and a telescopic cover. The dust is adsorbed by the liquid in the collection box, and the connecting pipe is opened by a valve to allow the dust to enter the interior of the discharge box with the liquid and be discharged from the slag discharge pipe, thereby reducing the influence of temperature and impurities on leveling and ensuring the accuracy of printing. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0040] Figure 1 It is a structural schematic diagram of the present invention from a first viewing angle;

[0041] Figure 2 It is a structural schematic diagram of the second viewing angle of the present invention;

[0042] Figure 3 It is a structural schematic diagram of the printing platform, the moving platform, the screw and the motor 1 of the present invention;

[0043] Figure 4 It is a schematic diagram of the structure of the temperature control mechanism, the purge mechanism, the collection box and the slag discharge assembly of the present invention;

[0044] Figure 5 It is a schematic diagram of the structure of the temperature control mechanism, the purge mechanism and the auxiliary heating assembly of the present invention;

[0045] Figure 6 It is a schematic diagram of the structure of the baffle, shielding assembly and slag discharge assembly of the present invention;

[0046] Figure 7 For the present invention Figure 1 Schematic diagram of the local enlarged structure at point A in the middle.

[0047] In the figure:

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

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

[0050] 201, purge box; 202, purge pipe; 203, nozzle; 204, electric cylinder 1;

[0051] 301, heating box; 302, heater;

[0052] 401, mobile frame; 402, telescopic cover; 403, electric cylinder 2;

[0053] 501, discharge box; 502, connecting pipe; 503, slag discharge pipe. DETAILED DESCRIPTION

[0054] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] Embodiment 1, as Figures 1 to 7As shown, the present embodiment proposes a leveling device for a 3D printing device, including a printing platform 1 and a moving platform 2, and also including a screw 3, a distance sensor 5, a temperature control mechanism, a purge mechanism and a collection box 6. Compared with the 3D printing device in the prior art that simply uses a sensor and a screw 3, the present invention controls the temperature inside the temperature control box 101 through a temperature controller 102, and makes the gas in the frame 8 and the temperature control box 101 flow through a fan 103, so that the temperature inside the frame 8 is in a relatively constant state, and 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 dust and impurities on the surface of the printing platform 1 into the interior of the collection box 6, and the printing platform 1 is enclosed by a baffle 7 and a telescopic cover 402. The dust is adsorbed by the liquid in the collection box 6, and the connecting pipe 502 is opened by a valve, so that the dust enters the interior of the discharge box 501 with the liquid and is discharged from the slag discharge pipe 503, thereby reducing the influence of temperature and impurities on leveling and ensuring the accuracy of printing.

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

[0057] like 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, the distance sensor 5 monitors the various position states of the printing platform 1 through the movement of the mobile platform 2 and the printing platform 1 itself. According to the detected height change of the printing platform 1, the control motor 4 is turned on to drive the screw 3 to rotate, and the height of the printing platform 1 is adjusted to make the printing platform 1 parallel to the print head 13. After the adjustment is completed, the height of the printing platform 1 is checked again 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 select a photoelectric sensor, which can judge the distance difference between the printing platform 1 and the distance sensor 5, that is, the print head 13 by emitting light and detecting the reflection of the light. 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 prior arts known to those skilled in the art, and are not the main innovations of this embodiment, and are not described in detail here.

[0058] like Figures 1 to 5 As shown, 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 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 to control the temperature inside the temperature control box 101. The fan 103 is arranged inside the temperature control box 101 to blow the air in the temperature control box 101 to the printing platform 1. The temperature inside the temperature control box 101 can be controlled by the temperature controller 102, and the air in the temperature controller 102 is blown into the frame 8 by the fan 103, so that the temperature of the printing environment is controlled by the temperature controller 102, especially the temperature of the printing platform 1 is controlled to maintain it at the printing temperature, thereby reducing the deformation of the printing platform 1 caused by temperature changes, thereby ensuring the printing accuracy.

[0059] like Figures 1 to 7As shown, the purge mechanism uses the airflow generated by the temperature control mechanism to purge the surface of the printing platform 1. The purge mechanism includes a purge box 201, a purge pipe 202 and a nozzle 203. The purge box 201 is arranged on the mobile platform 2 through a support frame. The purge box 201 is connected to the temperature control box 101. The purge pipe 202 is movably arranged on the mobile platform 2. An electric cylinder 204 is arranged on the mobile platform 2 through a mounting frame. The purge pipe 202 is arranged at the output end of the electric cylinder 204. The purge pipe 202 is located above the printing platform 1. A plurality of nozzles 203 are arranged. The nozzles 203 are connected to the purge pipe 202. A 204 can drive the purge tube 202 to move above the printing platform 1, and the air of a specific temperature in the temperature control box 101 is sent into the interior of the purge tube 202 through the fan 103, and is blown toward the printing platform 1 through the nozzle 203. As the purge tube 202 moves, dust and impurities on the surface of the printing platform 1 are blown off. At the same time, the air blown by the nozzle 203 can control the temperature of the printing platform 1, and assist the printing platform 1 to be at a specific temperature, that is, the printing temperature, so that the temperature of the printing platform 1 during and after leveling is constant, thereby reducing the deformation of the printing platform 1 due to temperature changes after leveling, which causes a decrease in printing accuracy.

[0060] like Figures 1 to 6 As shown, the collecting box 6 is arranged on the movable platform 2, and the collecting box 6 is located on the side of the printing platform 1 away from the purge box 201. A collecting port is opened on the top of the collecting box 6. By moving toward the collecting box 6 through the purge tube 202, impurities on the surface of the printing platform 1 are blown into the interior of the collecting box 6 through the collecting port for collection.

[0061] like Figures 1 to 5 As shown, in order to improve the heating efficiency of the printing platform 1 and reduce the preheating time, an auxiliary heating component is also 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 connected to the temperature control box 101, the purge box 201 is connected to the heating box 301, and 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, and at the same time, the fan 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 to the interior of the purge pipe 202, and the hot air is blown to the printing platform 1 through the nozzle 203. While the printing platform 1 is purged, the printing platform 1 is heated, thereby further improving the temperature control efficiency of the printing platform 1.

[0062] like Figures 1 to 6As shown, in order to reduce the splashing of impurities during purging, baffles 7 are provided on both sides of the printing platform 1 perpendicular to the moving direction of the purging tube 202, and the baffles 7 are used to block the two sides of the printing platform 1. At the same time, in order to further reduce the splashing of impurities during purging, a shielding component is also included. The shielding component includes a movable frame 401 and a telescopic cover 402. The movable frame 401 is movably arranged on the frame body 8, and the frame body 8 is provided with an electric cylinder 2 403. The movable frame 401 is arranged at the output end of the electric cylinder 2 403, and the telescopic cover 402 is arranged between the movable frame 401 and the frame body 8. The telescopic cover 402 and The edge of the baffle 7 is in contact, and the movable frame 401 and the telescopic cover 402 can be driven by the electric cylinder 2 403 to move toward the printing platform 1, so that the telescopic cover 402 is blocked between the two baffles 7. The movable frame 401 and the telescopic cover 402 are in the shape of a 7, which blocks the top of the baffle 7 and the side of the baffle 7 close to the collecting box 6 to prevent dust and impurities from escaping when the purge tube 202 purges the printing platform 1, causing pollution in the frame 8. During the printing process, the electric cylinder 2 403 drives the movable frame 401 to be close to the frame 8 to avoid obstruction to the printing of the print head 13.

[0063] like Figures 1 to 6 As shown, in order to discharge the impurities in the collecting box 6 in time, it also includes a slag discharge component, which includes a discharge box 501 and a connecting pipe 502. The discharge box 501 is arranged below the collecting box 6, and the discharge box 501 is connected with a slag discharge pipe 503. The discharge box 501 is connected to the bottom of the collecting box 6 through the connecting pipe 502, and a valve is arranged on the connecting pipe 502. The interior of the collecting box 6 contains liquid. For example, water, oil or other liquids can be placed inside the collecting box 6. After dust and impurities enter the interior of the collecting box 6, the liquid adsorbs the impurities and dust to prevent them from being lifted up again. At the same time, the valve is opened regularly to allow the dust and impurities inside the collecting box 6 to flow into the interior of the discharge box 501 with the liquid, and then be discharged from the frame 8 through the slag discharge pipe 503, and are cleaned and recycled. A delivery pump is arranged outside the frame 8, and a liquid adding pipe is arranged on the collecting box 6. The liquid adding pipe is connected to the delivery pump through a telescopic hose. The delivery pump delivers the liquid to the liquid adding pipe to add new liquid to the interior of the collecting box 6.

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

[0065] First, turn on the temperature controller 102 and the heater 302. The heater 302 releases heat to quickly heat the printing platform 1. The temperature controller 102 controls the temperature in the temperature control box 101. The fan 103 blows the air in the temperature control box 101 into the interior of the heating box 301, and at the same time sends the high-temperature air in the heating box 301 to the purge pipe 202. The electric cylinder 2 403 drives the movable frame 401 to move, and the telescopic cover 402 extends to cover the top and edge of the two baffles 7. The electric cylinder 1 204 drives the purge pipe 202 to move toward the collection box 6, and blows impurities and dust on the surface of the printing platform 1 into the interior of the collection box 6. The dust and impurities are absorbed by the liquid, and then the valve is opened 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 2 403 drives the movable frame 401 to return to its original position, compresses the telescopic cover 402, and the electric cylinder 1 204 drives the purge pipe 202 to return to its original position. The delivery pump sends new liquid into the interior of the collection box 6.

[0066] To level the printing platform 1, first lower the print head 13 and the distance sensor 5 to a certain height, and detect the distance between multiple points of the printing platform 1 and the print head 13 by moving the mobile platform 2 on the Y axis and the print head 13 on the X axis. The distance sensor 5 senses the difference in distance, controls the corresponding motor 4 to start, drives the screw 3 to rotate a certain angle, and adjusts 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 status of each point 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] Embodiment 2, as Figures 1 to 7As shown, this embodiment discloses a 3D printing device, which uses the leveling device of the above-mentioned 3D printing device, and also includes a frame 8, a Z-axis driving screw 9, an X-axis driving screw 10 and a Y-axis driving screw 11. A plurality of transparent plates are arranged on the frame 8, and the internal space of the frame 8, that is, the printing space, is isolated from the external environment by the transparent plates to form a closed 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 to avoid deformation due to temperature changes, which causes the printing material to deviate from the predetermined track during the printing process, thereby ensuring the accuracy of the printing. A take-out port for taking out the workpiece is opened on the frame 8, and an opening and closing door 12 is arranged at the take-out port. The take-out port can be opened and closed by the opening and closing door 12, and the printed workpiece can be taken out. The workpiece is taken out from the removal port, the temperature control box 101 is arranged on the frame 8, the Z-axis driving screw 9 is arranged on the frame 8, the X-axis driving screw 10 is arranged on the nut of the Z-axis driving screw 9, the print head 13 is arranged on the nut of the X-axis driving screw 10, the Y-axis driving screw 11 is arranged on the frame 8, and the movable platform 2 is arranged on the nut of the Y-axis driving screw 11. The Z-axis driving screw 9 can drive the X-axis driving screw 10 to be raised and lowered, that is, the height of the print head 13 and the distance sensor 5 is adjusted, the X-axis driving screw 10 can drive the print head 13 and the distance sensor 5 to move in the X-axis direction, and the Y-axis driving screw 11 can drive the printing platform 1 to move in the Y-axis direction, so that the print head 13 can be located at various positions above the printing platform 1.

[0068] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should 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 for measuring the distance between the print head (13) and the printing platform (1); A temperature control mechanism, the temperature control mechanism being used to control the temperature of the printing platform (1) to reduce temperature changes of the printing platform (1) during printing; 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); A collection box (6), wherein the collection box (6) is arranged on the mobile platform (2).

2. The leveling device for 3D printing equipment according to claim 1, characterized in that: The temperature control mechanism comprises: 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) is arranged inside the temperature control box (101), and is used to blow the air in the temperature control box (101) to the printing platform (1).

3. The leveling device for 3D printing equipment according to claim 2, characterized in that: 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).

4. The leveling device for 3D printing equipment according to claim 3, characterized in that: Also included is 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).

5. The leveling device for 3D printing equipment according to claim 4, 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).

6. The leveling device for 3D printing equipment according to claim 5, 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).

7. The leveling device for 3D printing equipment according to claim 6, characterized in that: Also included is a slag discharge assembly, the slag discharge assembly comprising: A discharge box (501), the discharge box (501) is arranged below the collection box (6), and the discharge box (501) is 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.

8. A 3D printing device, using the leveling device of the 3D printing device according to claim 7, 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 movable platform (2) is arranged on the Y-axis driving screw (11).

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