3D printing equipment and process for color coated steel plate

Abstract

The invention discloses color coated steel plate 3D printing equipment and technology, and relates to the technical field of coated steel plate 3D printing. The equipment comprises a bearing bottom frame, and two sets of limiting frames are symmetrically and fixedly arranged on the bearing bottom frame; a 3D printing spray head is arranged between the two sets of limiting frames and used for conducting 3D printing on a steel plate coating, and adjusting modules are arranged on the limiting frames and used for adjusting the position of the 3D printing spray head; the bearing bottom frame is further provided with a bearing plate used for bearing a steel plate, the bearing plate is fixed to the driving frame, the bearing bottom frame is further provided with a movement module, and the movement module is used for adjusting the driving frame to move in the length direction of the bearing bottom frame; a baking box body is further fixedly arranged on one side of the bearing bottom frame, and a heating module is arranged on the baking box body so as to heat an inner cavity of the baking box body; the positioning cavity can be sealed through the cover plate, so that high-temperature gas in the baking box body is prevented from leaking through the positioning cavity, and the heat preservation effect is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printing of coated steel plates, and in particular to a 3D printing device and process for color coated steel plates. Background Art

[0002] Color-coated steel 3D printing is an innovative technology that combines 3D additive manufacturing with color coating. By gradually depositing metal materials (such as steel substrates) and simultaneously applying a color coating, it enables personalized design and efficient production of components such as refrigerator housings. 3D printing allows for the integrated molding of complex surface textures (such as wood grain, marble, and metallic touch) and color coatings, enhancing product value and meeting consumers' diverse demands for refrigerator appearances (such as rust-industrial styles, rock slab aesthetics, and gradient matte finishes).

[0003] After 3D printing, the color coating typically requires high-temperature baking (depending on the coating type, the temperature range is approximately 120°C-200°C, and the time is 15-60 minutes). This is a critical step in film formation, allowing the resin in the coating to cross-link and form a dense, continuous protective film. This enhances the coating's adhesion, hardness, wear resistance, corrosion resistance, and weather resistance, ensuring color stability and preventing subsequent changes or shedding.

[0004] In the existing technology, after the color coating of the steel plate is completed through 3D printing, a robot is usually used to transfer it to a baking device to bake the coating. However, in the process of transferring the steel plate to the baking equipment, the baking equipment needs to be opened before discharging the material. During the opening process, the high-temperature air inside it can easily diffuse from the open end, thereby affecting the thermal insulation effect of the baking equipment. The high-temperature air after opening floats in the workshop, making the workshop temperature too high. When it is summer, it also affects the normal operation of the workers in the workshop. Summary of the Invention

[0005] The present invention provides a color-coated steel plate 3D printing device and process, which can solve the following problems existing in the prior art:

[0006] After the colored coating on the surface of the steel plate is 3D printed, when it is transferred to the baking equipment, the opening of the baking equipment needs to be opened, which causes the high-temperature air inside to diffuse, resulting in poor thermal insulation performance.

[0007] A color-coated steel plate 3D printing device comprises a supporting base frame, on which two sets of limiting frames are symmetrically fixedly arranged;

[0008] A 3D printing nozzle is provided between the two sets of limit frames for 3D printing the steel plate coating. An adjustment module is provided on the limit frame for adjusting the position of the 3D printing nozzle;

[0009] The supporting frame is further provided with a supporting plate for supporting the steel plate, the supporting plate is fixed to the driving frame, and the supporting frame is further provided with a motion module, the motion module is used to adjust the driving frame to move along the length direction of the supporting frame; a baking box is further fixedly arranged on one side of the supporting frame, and a heating module is provided on the baking box to heat the inner cavity of the baking box;

[0010] The bottom of the baking box is provided with an opening, and a sealing partition is slidably embedded in the opening. The baking box is also provided with a driving part, which is used to drive the sealing partition to slide on the bottom of the baking box.

[0011] Preferably, the 3D printing nozzle is fixed to one side of the nozzle mounting frame, and the adjustment module includes a positioning frame arranged between the two sets of limit frames;

[0012] Wherein, the positioning frame is provided with an adjusting portion, which is used to drive the 3D printing nozzle to reciprocate along the length direction of the positioning frame.

[0013] Preferably, the adjustment module further includes a lifting portion arranged on the limiting frame, and the lifting portion is used to drive the positioning frame to move up and down in the vertical direction.

[0014] Preferably, the motion module includes two groups of brackets symmetrically fixed on the supporting base frame, the two groups of brackets are respectively provided with first pulleys for rotation, the first pulleys on both sides are provided with first synchronous belts, the driving frame is fixed on the first synchronous belt, and the first motor is fixedly provided at the bottom of one group of brackets, and the driving end of the first motor is fixed to the first pulley.

[0015] Preferably, the lifting part includes screws that are rotatably arranged on one side of the limit frame, and a second motor is fixedly arranged on the limit frame. The driving end of the second motor is fixed to the screw, and a nut is spirally sleeved on the screw. The nut is fixed to the lifting frame that is slidably sleeved on the limit frame, and the two ends of the positioning frame are respectively fixed to the lifting frame.

[0016] Preferably, the adjustment part includes a second pulley rotatably arranged on the lifting frames on both sides, a second synchronous belt is sleeved on the second pulleys on both sides, the nozzle mounting frame is fixed to the second synchronous belt, and one side of the second pulley is fixed to the output end of the third motor fixed on the lifting frame.

[0017] Preferably, the supporting plate is provided with a first baffle, a second baffle, a third baffle and a fourth baffle in sequence in an enclosed manner; the first baffle, the second baffle, the third baffle and the fourth baffle enclose to form a positioning cavity for positioning the steel plate.

[0018] Preferably, a limit rod is fixed on the outer side of each baffle, and a limit seat fixed to the bearing plate is provided on the limit rod;

[0019] Wherein, the limiting rod is provided with a first spring.

[0020] Preferably, a cover plate is fixedly arranged on the side of the opening end of the baking box body close to the limiting frame, the length of the cover plate is equal to the length of the second baffle, and the lower surface of the cover plate is flush with the opening end of the baking box body;

[0021] Wherein, a positioning rod is fixedly arranged on one side wall of the baking box away from the limiting frame, a sliding sleeve on the positioning rod is provided with a sliding seat fixed to the sealing partition, and a second spring is provided on the positioning rod.

[0022] A color-coated steel plate 3D printing process, applied to the above-mentioned color-coated steel plate 3D printing device, comprises the following steps:

[0023] Place the steel plate to be processed on a movable carrying plate;

[0024] The adjustment module adjusts the position of the 3D printing nozzle in real time to print on the surface of the steel plate;

[0025] After the surface coating of the steel plate is 3D printed, the motion module drives the carrier plate to be transported toward the baking box. When the carrier plate moves to the side edge of the bottom opening of the baking box, the drive unit synchronously drives the sealing partition to move away from the limit frame until the steel plate moves to the bottom of the baking box.

[0026] The heating module is started to bake the coating on the surface of the steel plate.

[0027] The present invention provides a 3D printing device and process for color-coated steel plates, which have the following beneficial effects:

[0028] 1) After the surface coating of the steel plate of the present invention is 3D printed, the motion module drives the carrier plate to be transported toward the baking box. When the carrier plate moves to the side edge of the bottom opening of the baking box, as the carrier plate continues to move, the driving unit in this embodiment synchronously drives the sealing partition to move away from the limit frame, and the movement speed of the carrier plate and the sealing partition is consistent. Therefore, in the process of transporting the steel plate to the bottom open end of the baking box, the carrier plate can have a certain sealing effect on the open end. Compared with the prior art of directly opening the opening completely, the baking box of the present invention has a better insulation effect during the loading process, so as to avoid the phenomenon of high temperature loss inside the opening due to excessive opening. After each loading is completed, the time required for heating is shortened, and the baking efficiency is higher.

[0029] 2) After the coating of the steel plate of the present invention is baked, as the motion module drives the carrier plate to move toward the limit frame to remove the steel plate from the baking box, the driving unit synchronously drives the sealing partition to reset and move during the removal of the carrier plate to re-seal the opening, effectively preventing the high temperature inside the baking box from dissipating too quickly and reducing costs; after the carrier plate removes the steel plate, since the color coating has been completely solidified, the present invention can directly remove the steel plate from the carrier plate by means of mechanical arm adsorption or clamping, without causing damage to the color coating, and with higher quality stability;

[0030] 3) In the present invention, as the supporting plate drives each baffle to move toward the baking box body, the first baffle first abuts against the sealing partition. As the first baffle continues to move, it can push the sealing partition to slide synchronously. During the movement, the sealing partition can synchronously drive the sliding seat to slide on the positioning rod to compress the second spring and generate elastic force to facilitate the subsequent driving of each component to reset; accordingly, as each baffle moves to the bottom of the open end of the baking box body, the present invention can seal the positioning cavity by a cover plate to prevent the high-temperature gas in the baking box body from leaking through the positioning cavity, thereby further improving the insulation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Schematic diagram of the structure of a color coated steel plate 3D printing device provided by the present invention Figure 1 ;

[0032] Figure 2 Schematic diagram of the structure of a color coated steel plate 3D printing device provided by the present invention Figure 2 ;

[0033] Figure 3 This is a schematic diagram of the main structure of a color-coated steel plate 3D printing device provided by the present invention;

[0034] Figure 4 A schematic structural diagram of a baffle in a color-coated steel plate 3D printing device provided by the present invention;

[0035] Figure 5 A schematic diagram of the structure of a positioning cavity in a color-coated steel plate 3D printing device provided by the present invention;

[0036] Figure 6 Schematic diagram of the structure of a color coated steel plate 3D printing device provided by the present invention Figure 3 ;

[0037] Figure 7 A schematic cross-sectional view of a color-coated steel plate 3D printing device provided by the present invention;

[0038] Figure 8This is a schematic diagram of the structure of a color-coated steel plate 3D printing device provided by the present invention during baking of the steel plate coating.

[0039] Description of reference numerals:

[0040] 1. Carrying frame; 2. Second motor; 3. Carrying plate; 4. Baking box; 5. 3D printing nozzle; 101. Limiting frame; 102. Guide rail; 103. Positioning frame; 104. First motor; 105. Bracket; 106. First pulley; 107. First synchronous belt; 201. Screw; 202. Nut; 203. Lifting frame; 204. Third motor; 205. Second pulley; 206. Second synchronous belt; 301, drive frame; 302, first baffle; 303, second baffle; 304, third baffle; 305, fourth baffle; 306, limit seat; 307, limit rod; 308, first spring; 401, heating module; 402, sealing partition; 403, sliding seat; 404, positioning rod; 405, second spring; 406, cover plate; 501, nozzle mounting frame; 502, delivery pipe. DETAILED DESCRIPTION

[0041] The specific embodiments of the present invention are described in detail below, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0042] Example 1

[0043] like Figures 1 to 3 As shown, an embodiment of the present invention provides a color-coated steel plate 3D printing device, including a supporting base 1, on which two groups of limit frames 101 are symmetrically fixedly arranged; specifically, in this embodiment, the limit frames 101 are fixed to the supporting base 1 by bolt connection, and accordingly, this embodiment can open a plurality of threaded holes on the supporting base 1 to facilitate adjustment of the horizontal position of the limit frames 101 on the supporting base 1.

[0044] A 3D printing nozzle 5 is positioned between the two sets of limiting frames 101 for 3D printing the steel plate coating. The limiting frames 101 are provided with an adjustment module for adjusting the position of the 3D printing nozzle 5. It should be noted that the 3D printing nozzle 5 of this embodiment is connected to a plurality of delivery tubes 502, each of which is used to transport a different color of 3D printing substrate to achieve 3D printing of the steel plate's colored coating. Accordingly, during 3D printing of the steel plate by the 3D printing nozzle 5 of this embodiment, the adjustment module can be used to adjust the position of the 3D printing nozzle 5 in real time to ensure that the steel plate surface is fully printed.

[0045] In this embodiment, a carrying plate 3 for supporting the steel plate is further provided on the carrying base 1, and the carrying plate 3 is fixed on the driving frame 301, wherein the carrying base 1 is also provided with a motion module, and the motion module is used to adjust the driving frame 301 to move along the length direction of the carrying base 1; specifically, in this embodiment, the steel plate to be processed is placed on a movable carrying plate 3, and in the process of 3D printing of the steel plate, the steel plate can be driven to move by the motion module to adjust the relative position between the steel plate and the 3D printing nozzle 5 in real time, so as to achieve full printing of the steel plate surface. Accordingly, after printing, the steel plate of this embodiment can also be directly output through the motion module and processed in the next step, without the need for a robot or manual secondary transfer, which is more efficient. Moreover, since the coating on the surface of the steel plate is not completely cured, it is easy to cause damage to the coating during the movement. This embodiment can effectively protect the color coating on the surface of the steel plate that is not completely cured.

[0046] See also Figure 1-Figure 3 as well as Figure 7 A baking box 4 is fixedly arranged on one side of the supporting base frame 1, and a heating module 401 is provided on the baking box 4 to heat the inner cavity of the baking box 4; specifically, the heating module 401 of this embodiment can adopt a resistive heating device, and this embodiment does not limit its specific model to meet the actual application requirements. Among them, this embodiment can adjust the temperature range of the heating module 401 to 120℃-200℃ and the time to 15-60 minutes according to the type of 3D printed coating.

[0047] As a further solution of this embodiment, an opening is provided at the bottom of the baking box 4, and a sealing partition 402 is slidably embedded in the opening. The baking box 4 is also provided with a driving part, which is used to drive the sealing partition 402 to slide at the bottom of the baking box 4; it can be explained that after the surface coating of the steel plate in this embodiment is completed after 3D printing, the carrying plate 3 is driven by the motion module to be transported toward the baking box 4, and when the carrying plate 3 moves to the side edge of the bottom opening of the baking box 4, as the carrying plate 3 continues to move, this embodiment synchronously drives the sealing partition 402 to move away from the limiting frame 101 through the driving part, and the movement speed of the carrying plate 3 and the sealing partition 402 is consistent. Therefore, in the process of transporting the steel plate to the bottom open end of the baking box 4, the carrying plate 3 can have a certain sealing effect on the open end. Compared with the prior art that directly opens the opening completely, the baking box 4 in this embodiment has a better insulation effect during the loading process to avoid the phenomenon of high temperature loss inside due to excessive opening of the opening. After each loading is completed, the time required for heating is shortened, and the baking efficiency is higher.

[0048] Correspondingly, when the steel plate coating is baked, as the motion module drives the supporting plate 3 to move toward the limit frame 101 to move the steel plate out of the baking box 4, during the moving of the supporting plate 3, the driving part synchronously drives the sealing partition 402 to reset and move to close the opening again, effectively avoiding the high temperature inside the baking box 4 from dissipating too quickly and reducing costs; after the supporting plate 3 moves the steel plate out, since the color coating has been completely solidified and formed, this embodiment can directly use a robot adsorption or clamping method to remove the steel plate from the supporting plate 3, which will not cause damage to the color coating and has higher quality stability.

[0049] Example 2

[0050] Based on Example 1, please refer to Figure 1-Figure 4 The 3D printing nozzle 5 is fixed to one side of the nozzle mounting frame 501, and the adjustment module includes a positioning frame 103 arranged between the two sets of limit frames 101, wherein the positioning frame 103 is provided with an adjustment part, and the adjustment part is used to drive the 3D printing nozzle 5 to reciprocate along the length direction of the positioning frame 103; specifically, the direction in which the first adjustment part drives the 3D printing nozzle 5 to move is perpendicular to the direction in which the motion module adjusts the driving frame 301 to move. By cooperating with the adjustment part and the motion module, the 3D printing nozzle 5 can be used to fully print the coating on the surface of the steel plate.

[0051] In this embodiment, the adjustment module also includes a lifting part arranged on the limit frame 101, and the lifting part is used to drive the positioning frame 103 to rise and fall in the vertical direction; it can be explained that in the initial state, there is a certain distance between the 3D printing nozzle 5 and the steel plate. When 3D printing is required, the positioning frame 103 is driven down by the lifting part to adjust the distance between the 3D printing nozzle 5 and the steel plate.

[0052] As a further solution of this embodiment, please refer to Figure 1 and Figure 6 , the motion module includes two groups of brackets 105 symmetrically fixed on the bearing chassis 1, and the two groups of brackets 105 are respectively rotatably provided with first pulleys 106, and the first synchronous belts 107 are sleeved on the first pulleys 106 on both sides, and the driving frame 301 is fixed on the first synchronous belt 107, and the first motor 104 is fixedly provided at the bottom of one group of brackets 105, and the driving end of the first motor 104 is fixed to the first pulley 106; it can be explained that, in this embodiment, when adjusting the horizontal position of the steel plate, the first pulley 106 can be driven to rotate by the first motor 104, and the first synchronous belt 107 can be driven to transmit during the rotation of the first pulley 106, and the driving frame 301 can be synchronously driven to move through the first synchronous belt 107;

[0053] See also Figure 1 and Figure 2The lifting part includes a screw 201 that is respectively rotatably arranged on one side of the limiting frame 101. The limiting frame 101 is also fixedly provided with a second motor 2. The driving end of the second motor 2 is fixed to the screw 201. A nut 202 is spirally sleeved on the screw 201. The nut 202 is fixed to a lifting frame 203 that is slidably sleeved on the limiting frame 101. Both ends of the positioning frame 103 are respectively fixed to the lifting frame 203. It can be explained that in this embodiment, when adjusting the height of the 3D printing nozzle 5, the screw 201 can be driven to rotate by the second motor 2. During the movement of the nut 202 on the screw 201, the lifting frame 203 can be synchronously driven to rise and fall on the limiting frame 101, thereby synchronously driving the positioning frame 103 to rise and fall.

[0054] In addition, the adjustment part includes a second pulley 205 that is rotatably arranged on the lifting frames 203 on both sides, and a second synchronous belt 206 is provided on the second pulleys 205 on both sides. The nozzle mounting frame 501 is fixed to the second synchronous belt 206, and one side of the second pulley 205 is fixed to the output end of the third motor 204 fixed on the lifting frame 203; it can be explained that when the 3D printing nozzle 5 is adjusted to move along the length direction of the positioning frame 103, the second pulley 205 can be driven to rotate by the third motor 204. During the rotation of the second pulley 205, the second synchronous belt 206 can be synchronously driven to transmit, and the second synchronous belt 206 can synchronously drive the nozzle mounting frame 501 and the 3D printing nozzle 5 to move.

[0055] It should be noted that in order to improve the stability of the driving frame 301 moving along the length direction of the supporting chassis 1, it is possible to refer to Figure 1 At least one set of guide rails 102 is fixedly arranged in the supporting base 1, and a slide fixed to the bottom of the driving frame 301 is slidably arranged in the guide rails 102; specifically, during the movement of the driving frame 301, the slide can be synchronously driven to slide in the guide rails 102, which can improve the stability of the movement of the driving frame 301 on the one hand, and guide the movement of the driving frame 301 on the other hand to avoid the phenomenon of movement deviation.

[0056] For further information, see Figure 1 and Figure 4-Figure 6 When the 3D printing nozzle 5 of this embodiment prints the coating on the surface of the steel plate, in order to position the steel plate and improve the accuracy of printing the coating on the steel plate, in this embodiment, the first baffle 302, the second baffle 303, the third baffle 304 and the fourth baffle 305 are arranged in sequence in an enclosed manner on the carrier plate 3; the first baffle 302, the second baffle 303, the third baffle 304 and the fourth baffle 305 enclose to form a positioning cavity for positioning the steel plate; it can be explained that, before printing the coating on the surface of the steel plate, the steel plate is placed in the positioning cavity, and the side edges of the steel plate are respectively fitted with the baffles on the corresponding side, thereby achieving the effect of positioning the steel plate to improve the subsequent printing accuracy.

[0057] In this embodiment, since each baffle is in contact with the side edge of the steel plate, when the 3D printing nozzle 5 prints on the edge of the steel plate, the movement trajectory of the 3D printing nozzle 5 will produce motion interference with the baffle. Accordingly, a limit rod 307 is fixed on the outer side of each baffle, and a limit seat 306 fixed to the carrier plate 3 is slidably sleeved on the limit rod 307, wherein a first spring 308 is provided on the limit rod 307, one end of the first spring 308 is fixed to the limit seat 306, and the other end is fixed to the baffle. It can be explained that when the 3D printing nozzle 5 of this embodiment prints the coating on the surface of the steel plate, as the 3D printing nozzle 5 prints on the edge of the steel plate, the movement trajectory of the 3D printing nozzle 5 will produce motion interference with the baffle. Accordingly, a limit rod 307 is fixed on the outer side of the baffle, and a limit seat 306 fixed to the carrier plate 3 is slidably sleeved on the limit rod 307, wherein a first spring 308 is provided on the limit rod 307, The printing nozzle 5 moves to the side edge position on the steel plate, and the 3D printing nozzle 5 first contacts the baffle, and then can push the baffle to move a certain distance in the direction away from the positioning cavity to reserve the space required for the 3D printing nozzle 5 to print, so as not to cause interference. Accordingly, during the movement of the baffle, it synchronously drives the limit rod 307 to slide in the limit seat 306 to compress the first spring 308 and generate elastic force. As the 3D printing nozzle 5 moves from the edge of the steel plate to the inside, the first spring 308 can synchronously drive the baffle to return to its initial position through the limit rod 307.

[0058] It should also be noted that after the printing of the steel plate of this embodiment is completed, as the motion module drives the carrier plate 3 to be transported toward the baking box 4, the carrier plate 3 synchronously drives the steel plate to move. Since the coating on the surface of the steel plate is not completely cured, the upper surface of the steel plate needs to maintain a certain distance from the bottom open end of the baking box 4 to avoid damage to the coating caused by the bottom open end of the baking box 4. In this embodiment, please refer to Figure 3Since each baffle is enclosed on the steel plate to form a closed structure, the supporting plate 3 of this embodiment can synchronously drive each baffle to move during the movement. Based on this, the upper surface of each baffle can slide and fit with the bottom open end of the baking box body 4 during the movement. Correspondingly, a cover plate 406 is fixedly arranged on the side of the opening end of the baking box body 4 close to the limiting frame 101. The length of the cover plate 406 is equal to the length of the second baffle 303, and the lower surface of the cover plate 406 is flush with the open end of the baking box body 4. A positioning rod 404 is fixedly arranged on the side wall of the baking box body 4 away from the limiting frame 101. A sliding sleeve is provided on the positioning rod 404 with a sliding seat 403 fixed to the sealing partition 402. A second spring 405 is provided on the positioning rod 404. One end of the second spring 405 It is fixed to the sliding seat 403, and the other end is fixed to the end of the positioning rod 404; it can be explained that as the supporting plate 3 drives the baffles to move toward the baking box body 4, the first baffle 302 first abuts against the sealing partition 402, and as the first baffle 302 continues to move, it can push the sealing partition 402 to slide synchronously. During the movement of the sealing partition 402, it can synchronously drive the sliding seat 403 to slide on the positioning rod 404 to compress the second spring 405 and generate elastic force, so as to facilitate the subsequent driving of each component to reset; accordingly, as each baffle moves to the bottom of the open end of the baking box body 4, this embodiment can seal the positioning cavity by the cover plate 406 to prevent the high-temperature gas in the baking box body 4 from leaking through the positioning cavity, thereby further improving the insulation effect.

[0059] A 3D printing process for color-coated steel plates includes the following steps:

[0060] See also Figure 1-Figure 4 , S1, placing the steel plate to be processed on the movable carrying plate 3;

[0061] S2, the adjustment module adjusts the position of the 3D printing nozzle 5 in real time to print on the surface of the steel plate;

[0062] S3. After the surface coating of the steel plate is 3D printed, the motion module drives the carrier plate 3 to be transported toward the baking box 4. When the carrier plate 3 moves to the side edge of the bottom opening of the baking box 4, the driving unit synchronously drives the sealing partition 402 to move away from the limiting frame 101 until the steel plate moves to the bottom of the baking box 4 (see Figure 8 );

[0063] S4, start the heating module 401 to bake the coating on the surface of the steel plate, the baking temperature range is 120°C-200°C, and the time is 15-60 minutes;

[0064] S5. After baking is completed, the motion module drives the steel plate to move out from the open end.

[0065] The above disclosures are only a few specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the scope of protection of the present invention.

Claims

1. A color-coated steel plate 3D printing device, comprising a supporting base (1), wherein two sets of limiting frames (101) are symmetrically fixedly arranged on the supporting base (1); It is characterized by: A 3D printing nozzle (5) is provided between the two groups of the limiting frames (101) for performing 3D printing on the steel plate coating, and an adjustment module is provided on the limiting frame (101) for adjusting the position of the 3D printing nozzle (5); The carrier base (1) is further provided with a carrier plate (3) for supporting the steel plate, the carrier plate (3) being fixed on the driving frame (301), and the carrier base (1) is further provided with a motion module, the motion module being used to adjust the driving frame (301) to move along the length direction of the carrier base (1); a baking box (4) is further fixedly arranged on one side of the carrier base (1), and a heating module (401) is provided on the baking box (4) to heat the inner cavity of the baking box (4); The bottom of the baking box (4) is provided with an opening, and a sealing partition (402) is slidably embedded in the opening. The baking box (4) is also provided with a driving part, which is used to drive the sealing partition (402) to slide at the bottom of the baking box (4).

2. The color-coated steel plate 3D printing device according to claim 1, characterized in that: The 3D printing nozzle (5) is fixed to one side of the nozzle mounting frame (501), and the adjustment module includes a positioning frame (103) arranged between two groups of limiting frames (101); The positioning frame (103) is provided with an adjusting portion, which is used to drive the 3D printing nozzle (5) to reciprocate along the length direction of the positioning frame (103).

3. The color-coated steel plate 3D printing device according to claim 2, characterized in that: The adjustment module further comprises a lifting portion arranged on the limiting frame (101), and the lifting portion is used to drive the positioning frame (103) to move up and down in a vertical direction.

4. The color-coated steel plate 3D printing device according to claim 1, characterized in that: The motion module comprises two groups of brackets (105) symmetrically fixed on a bearing chassis (1), first pulleys (106) are rotatably arranged on the two groups of brackets (105), first synchronous belts (107) are sleeved on the first pulleys (106) on both sides, a driving frame (301) is fixed on the first synchronous belt (107), a first motor (104) is fixedly arranged on the bottom of one group of brackets (105), and a driving end of the first motor (104) is fixed to the first pulley (106).

5. The color-coated steel plate 3D printing device according to claim 3, characterized in that: The lifting part comprises a screw (201) rotatably arranged on one side of the limiting frame (101); a second motor (2) is fixedly arranged on the limiting frame (101); a driving end of the second motor (2) is fixed to the screw (201); a nut (202) is spirally sleeved on the screw (201); the nut (202) is fixed to a lifting frame (203) slidably sleeved on the limiting frame (101); and both ends of the positioning frame (103) are fixed to the lifting frame (203).

6. The color-coated steel plate 3D printing device according to claim 5, characterized in that: The adjustment part comprises a second pulley (205) rotatably arranged on the lifting frames (203) on both sides, a second synchronous belt (206) is sleeved on the second pulleys (205) on both sides, the nozzle mounting frame (501) is fixed to the second synchronous belt (206), and one side of the second pulley (205) is fixed to the output end of the third motor (204) fixed on the lifting frame (203).

7. The color-coated steel plate 3D printing device according to claim 1, characterized in that: The bearing plate (3) is provided with a first baffle (302), a second baffle (303), a third baffle (304) and a fourth baffle (305) in sequence in an enclosed manner; the first baffle (302), the second baffle (303), the third baffle (304) and the fourth baffle (305) enclose and form a positioning cavity for positioning the steel plate.

8. The color-coated steel plate 3D printing device according to claim 7, characterized in that: A limiting rod (307) is fixed on the outer side of each baffle (302), and a limiting seat (306) fixed to the bearing plate (3) is slidably sleeved on the limiting rod (307); Wherein, a first spring (308) is provided on the limiting rod (307).

9. The color-coated steel plate 3D printing device according to claim 7, characterized in that: A cover plate (406) is fixedly arranged on one side of the opening end of the baking box body (4) close to the limiting frame (101); the length of the cover plate (406) is equal to the length of the second baffle (303), and the lower surface of the cover plate (406) is flush with the opening end of the baking box body (4); A positioning rod (404) is fixedly arranged on a side wall of the baking box (4) away from the limiting frame (101), a sliding sleeve on the positioning rod (404) is provided with a sliding seat (403) fixed to the sealing partition (402), and a second spring (405) is provided on the positioning rod (404).

10. A 3D printing process for color-coated steel plates, characterized in that: A color-coated steel plate 3D printing device as described in any one of claims 1 to 9 comprises the following steps: Placing the steel plate to be processed on a movable carrying plate (3); The adjustment module adjusts the position of the 3D printing nozzle (5) in real time to print on the surface of the steel plate; After the surface coating of the steel plate is 3D printed, the motion module drives the carrier plate (3) to be transported toward the baking box (4). When the carrier plate (3) moves to the side edge of the bottom opening of the baking box (4), the driving unit synchronously drives the sealing partition (402) to move in a direction away from the limiting frame (101) until the steel plate moves to the bottom of the baking box (4). The heating module (401) is started to bake the coating on the surface of the steel plate.

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