3D printing platform quick-change equipment and 3D printer

Abstract

The invention provides 3D printing platform quick-change equipment and a 3D printer, the 3D printing platform quick-change equipment comprises a main body mechanism, the main body mechanism comprises a bearing assembly and a laser printing device, the laser printing device is movably mounted on the bearing assembly, a screen plate is arranged on the bearing assembly, and the screen plate is used for placing a printing target; the grabbing mechanism is arranged on one side of the main body mechanism, the grabbing mechanism comprises a crown block assembly and a clamping assembly, and the crown block assembly is installed on the top of the house; the clamping assembly is movably installed on the crown block assembly and used for clamping the screen plate. The 3D printing platform quick-change equipment has the advantage of being convenient to take pieces, and the automation degree and the production efficiency of the 3D printing process can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of 3D printing, in particular to a 3D printing platform quick-change device and a 3D printer. BACKGROUND

[0002] 3D printing technology, also known as additive manufacturing, has been widely applied and developed in recent years. It converts digital models into physical objects through layer-by-layer printing, bringing great convenience to manufacturing, medical treatment, education and other fields.

[0003] At present, most 3D printers need to be manually taken off from the printing platform by the operator after printing. This process not only takes time and effort, but also easily causes damage to the printed part due to improper operation. In addition, manual taking also has certain safety hazards, especially when the printed part is large or heavy, the operator needs to spend a lot of effort and time to complete the taking work, which is easy to cause fatigue and operation errors. SUMMARY

[0004] The present application aims to at least solve one of the above technical problems.

[0005] To this end, one object of the present application is to provide a 3D printing platform quick-change device, which has the advantage of convenient taking and can improve the automation degree and production efficiency of the 3D printing process.

[0006] Another object of the present application is to provide a 3D printer.

[0007] To achieve the above object, the first aspect of the present application provides a 3D printing platform quick-change device, comprising: a main body mechanism, the main body mechanism comprising a bearing assembly and a laser printing device, wherein the laser printing device is movably installed on the bearing assembly, a screen plate is arranged on the bearing assembly, and the screen plate is used for placing a printing target; a grabbing mechanism arranged on one side of the main body mechanism, the grabbing mechanism comprising a crown block assembly and a clamping assembly, wherein the crown block assembly is installed on the top of a house; the clamping assembly is movably installed on the crown block assembly, and the clamping assembly is used for clamping the screen plate.

[0008] In addition, the 3D printing platform quick-change device according to the above embodiments of the present application can also have the following additional technical features: In one embodiment of the present application, a driving component is arranged between the laser printing device and the bearing assembly, the driving component comprising a first driving motor and two groups of conveyor pulleys, wherein the two groups of conveyor pulleys are symmetrically arranged on the bearing assembly, the first driving motor is installed on one side of one group of conveyor pulleys, and the laser printing device is connected with the two groups of conveyor pulleys.

[0009] In one embodiment of the present application, the clamping assembly comprises two air cylinders, two cross bars and four telescopic rods, wherein one of the cross bars is pivotally connected with the overhead traveling crane assembly, four of the telescopic rods are respectively installed at one end of one of the cross bars, two of the air cylinders are respectively pivotally connected with corresponding ones of the telescopic rods, and the other cross bar is arranged on the four telescopic rods; and one end of each of the telescopic rods away from the overhead traveling crane assembly is provided with a jaw part.

[0010] In one embodiment of the present application, the jaw part has a cross section in the shape of a n-shaped mechanism.

[0011] In one embodiment of the present application, the jaw part comprises a vertical plate, a first horizontal plate, an adaptive part and a second horizontal plate, wherein the vertical plate is pivotally connected with the telescopic rod, the first horizontal plate is connected with the vertical plate, the adaptive part is arranged inside the vertical plate, and the second horizontal plate is connected with the adaptive part.

[0012] In one embodiment of the present application, the jaw part has a roller structure, one end of the telescopic rod is rotatably connected with the jaw part, and an arc-shaped groove is formed in the side wall of the screen plate, the diameter of the arc-shaped groove being greater than the diameter of the jaw part.

[0013] In one embodiment of the present application, a magnet is installed at each of the four corners of the screen plate, and a sensor is installed at one end of the telescopic rod, the four sensors being arranged in one-to-one correspondence with the four magnets.

[0014] In one embodiment of the present application, a plurality of buckles are symmetrically arranged on the bearing assembly close to the screen plate, a mounting hole corresponding to the buckle is formed in the screen plate, a spring is arranged on one side of the buckle, the buckle is arranged in the mounting hole, and an inclined surface is arranged on the buckle.

[0015] In one embodiment of the present application, the overhead traveling crane assembly comprises a mounting beam, a connecting piece, a second driving motor, a gear and a rack.

[0016] The mounting beam is fixed on the top of a house; the connecting piece is rollingly connected with the mounting beam, the second driving motor is arranged on the connecting piece, the gear is connected with the output shaft of the second driving motor, the rack is installed inside the mounting beam, and the gear is meshingly connected with the rack.

[0017] The second aspect of the embodiments of the present application proposes a 3D printer comprising the 3D printing platform quick-change device according to the first aspect of the embodiments.

[0018] Compared with the prior art, the technical solution provided in this application has the following beneficial effects: The 3D printing platform quick-change device and 3D printer in the embodiments of this application, by arranging a gripping mechanism on one side of the main body, realize automated part picking using the gripping mechanism, making it convenient to pick up the printed parts, and improving the automation level and production efficiency of the 3D printing process.

[0019] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein: Figure 1 This is a schematic diagram of a quick-change device for a 3D printing platform according to an embodiment of this application; Figure 2 This is a schematic diagram of the main structure according to an embodiment of this application; Figure 3 This is a schematic diagram of a gripping mechanism according to an embodiment of this application; Figure 4 This is a schematic diagram of the gripper component structure according to the first embodiment of this application; Figure 5 This is a schematic diagram of the gripper component structure according to the second embodiment of this application; Figure 6 A schematic diagram of the gripper component structure according to the third embodiment of this application. Figure 1 ; Figure 7 A schematic diagram of the gripper component structure according to the third embodiment of this application. Figure 2 ; Figure 8 This is a schematic diagram of the connection structure between the stencil and the support component according to an embodiment of this application; Figure 9 for Figure 8 Enlarged schematic diagram of the structure in area A; Figure 10 This is a schematic diagram of the main structure of a crane assembly according to an embodiment of this application.

[0021] Reference numerals: 100, Main body mechanism; 101, Bearing component; 102, Laser printing device; 103, Screen plate; 104, Driving component; 105, First driving motor; 106, Conveyor pulley; 200, Gripping mechanism; 201, Overhead crane assembly; 2011, Mounting beam; 2012, Connector; 2013, Second driving motor; 2014, Gear; 2015, Rack; 202, Clamping assembly; 203, Cylinder; 204, Cross bar; 205, Telescopic bar; 206, Gripper component; 2061, Vertical plate; 2062, First horizontal plate; 2063, Adaptive component; 2064, Second horizontal plate; 2065, Arc-shaped groove; 310, Magnet; 320, Sensor; 410, Buckle; 420, Mounting hole; 430, Spring. Detailed Implementation

[0022] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0023] The following describes a quick-change device for a 3D printing platform according to an embodiment of the present application with reference to the accompanying drawings.

[0024] like Figures 1-10 As shown, the 3D printing platform quick-change device of this application embodiment may include: The main structure 100 includes a support component 101 and a laser printing device 102.

[0025] The laser printing device 102 is movably mounted on the support assembly 101, and the support assembly 101 is provided with a screen 103, which is used to place the printing target.

[0026] It should be noted that the specific structure and working principle of the laser printing device 102 described in this embodiment are existing technologies, and therefore will not be described in detail here.

[0027] The gripping mechanism 200 is arranged on one side of the main mechanism 100. The gripping mechanism 200 includes a crane assembly 201 and a clamping assembly 202.

[0028] The overhead crane assembly 201 is installed on the roof of the building; the clamping assembly 202 is movably installed on the overhead crane assembly 201 and is used to clamp the wire mesh 103.

[0029] Specifically, when using the laser printing device 102 to perform a printing operation, the stencil 103 on the support component 101 serves as the forming substrate to support the printing material. The laser printing device 102 scans and solidifies the material layer by layer according to the preset model data, and finally completes the forming of the solid component on the stencil 103.

[0030] Once the printing task is completed, the device enters the retrieval process. Driven by the external control system, the laser printing device 102 moves laterally along the support component 101, thereby making room for subsequent retrieval.

[0031] The overhead crane assembly 201 installed on the roof first drives the clamping assembly 202 to move above the printed stencil 103. Then, the clamping assembly 202 performs a clamping action to firmly grasp the stencil 103 carrying the printed parts.

[0032] The overhead crane assembly 201 lifts and moves the clamping assembly 202 horizontally, thereby removing the stencil 103 along with the printed parts on it from the printing area of ​​the main mechanism 100 and transferring it to a designated unloading or post-processing station (e.g., cleaning process). This process frees up the main printing area, allowing operators or automated systems to quickly place a new, prepared stencil 103 onto the carrying assembly 101.

[0033] After unloading, the clamping assembly 202 can return the empty stencil 103 or replace it with a spare stencil 103. The system then prepares to execute the next printing task. The entire process is automated through the gripping mechanism 200, which enables the rapid separation, transfer and replacement of the printing platform (stencil 103).

[0034] In one embodiment of this application, such as Figure 2 As shown, a driving component 104 is provided between the laser printing device 102 and the carrier component 101. The driving component 104 includes a first driving motor 105 and two sets of conveyor pulleys 106.

[0035] Two sets of conveyor belt pulleys 106 are symmetrically arranged on the bearing assembly 101. The first drive motor 105 is installed on one side of one set of conveyor belt pulleys 106. The laser printing device 102 is connected to the two sets of conveyor belt pulleys 106.

[0036] In one embodiment of this application, such as Figure 3 As shown, the clamping assembly 202 includes two cylinders 203, two cross rods 204, and four telescopic rods 205.

[0037] One crossbar 204 is pivotally connected to the overhead crane assembly 201, and four telescopic rods 205 are respectively installed at one end of one crossbar 204; two cylinders 203 are pivotally connected to the corresponding telescopic rods 205 respectively, and another crossbar 204 is set on the four telescopic rods 205; a gripper component 206 is provided at the end of the telescopic rod 205 away from the overhead crane assembly 201.

[0038] It should be noted that the two cylinders 203 described in this embodiment are connected to an external control device to ensure the synchronous operation of the two cylinders 203.

[0039] In one embodiment of this application, such as Figure 4 As shown, the gripper component 206 has a U-shaped cross-section.

[0040] Specifically, before the part is retrieved, the displacement of the laser printing device 102 is controlled by a dedicated drive component 104. The first drive motor 105 serves as a power source, driving a set of conveyor belt pulleys 106 connected to it. Through the transmission system consisting of two symmetrically arranged sets of conveyor belt pulleys 106, power is smoothly and synchronously transmitted to the laser printing device 102, driving it to move along a specific track (such as the X-axis direction) of the carrying component 101, thereby freeing up sufficient space for subsequent part retrieval.

[0041] During retrieval, the overhead crane assembly 201 transports the clamping assembly 202 to a position above the printed stencil 103. The telescopic rod 205 extends and retracts autonomously, causing the gripper components 206 to move to both sides of the stencil 103 (this condition can be detected by position sensors). The clamping action is initiated by two cylinders 203 under the synchronization signal of an external control device, pushing the telescopic rod 205, which is pivotally connected to it, to move. This movement is converted into the parallel opening and closing motion of the gripper components 206 through a linkage mechanism formed by two cross rods 204. This design ensures that multiple gripper components 206 can synchronously and smoothly contact and clamp the sides of the stencil 103.

[0042] Understandably, the gripper component 206 has a U-shaped cross-section. When multiple gripper components 206 are closed, the U-shaped structure can wrap around and clamp the stencil 103 from the sides and bottom, providing a larger contact area and multiple constraints, effectively preventing the stencil 103 from slipping or tipping over during lifting and transfer. After clamping, the overhead crane assembly 201 can safely move the stencil 103 away from the printing station.

[0043] In another embodiment of this application, such as Figure 5 As shown, the gripper component 206 includes a vertical plate 2061, a first horizontal plate 2062, an adaptive component 2063, and a second horizontal plate 2064.

[0044] The vertical plate 2061 is pivotally connected to the telescopic rod 205, the first horizontal plate 2062 is connected to the vertical plate 2061, the adaptive component 2063 is disposed inside the vertical plate 2061, and the second horizontal plate 2064 is connected to the adaptive component 2063.

[0045] Specifically, when the gripping mechanism 200 moves the screen 103 and the printed parts above it, in order to avoid excessive impact force during the initial operation of the equipment, which could lead to the risk of the printed parts tipping over, the specific structure of the gripper component 206 is improved.

[0046] During the lifting process, at the instant the gripper component 206 contacts the mesh plate 103 and begins to apply force, the adaptive component 2063 (which can be understood as an elastic element, damper, or flexible material) located inside the vertical plate 2061 undergoes controllable deformation or displacement, absorbing and dissipating the instantaneous impact energy generated by contact and the start of lifting. Subsequently, the force is smoothly transmitted through the adaptive component 2063 to the second horizontal plate 2064 and acts on the mesh plate 103, achieving a smooth transition from flexible contact to rigid clamping.

[0047] During the horizontal transfer process, since the vertical plate 2061 is pivotally connected to the telescopic rod 205, the rotation action buffers the inertial force of the screen plate 103 and the printed parts, thereby solving the technical problem that the impact force generated during the initial operation of the equipment is too large, causing the printed parts to easily tip over.

[0048] Furthermore, such as Figure 6 and Figure 7 As shown, the gripper component 206 is arranged in a roller structure, one end of the telescopic rod 205 is rotatably connected to the gripper component 206, and the side wall of the mesh plate 103 is provided with an arc-shaped groove 2065, the diameter of the arc-shaped groove 2065 is larger than the diameter of the gripper component 206.

[0049] It should be noted that the diameter of the arc-shaped groove 2065 described in this embodiment is larger than the diameter of the gripper component 206, which means that the gripper component 206, which has a roller structure, can move inside the arc-shaped groove 2065.

[0050] In addition, the thickness of the roller-structured gripper component 206 is less than the height of the arc-shaped groove 2065, so the roller-structured gripper component 206 does not contact the side wall of the arc-shaped groove 2065 after entering the arc-shaped groove 2065.

[0051] Specifically, during the gripping process, the roller-structured gripper component 206 first contacts and enters the arc-shaped groove 2065. In the initial stage, the upper surface of the roller-structured gripper component 206 contacts the upper sidewall of the arc-shaped groove 2065. When the overhead crane assembly 201 moves the clamping assembly 202, the inertial force of the stencil 103 and the printed part and the frictional force between the roller-structured gripper component 206 and the arc-shaped groove 2065 act as a reaction force. This process consumes energy and produces a buffering effect, greatly reducing the lateral impact force on the stencil 103 and the printed part above it.

[0052] During the horizontal transfer process, the gripper component 206, which has a roller structure, abuts against the arc-shaped groove 2065. The arc-shaped surface of the arc-shaped groove 2065 is used to buffer the inertial force of the stencil 103 and the printed part, thereby ensuring the stability of the printed part during the picking process.

[0053] The two methods described above solve the problem of inertial force or torque impact on the stencil 103 and the printed parts caused by the sudden acceleration at the moment of gripping. Whether through the deformation energy absorption of the adaptive component 2063 or through the frictional transition of rolling, the rigid force loading of "hard-on-hard" is avoided, which greatly reduces the risk of the printed parts (especially those with a high center of gravity or fragile structure) shifting, shaking, or even falling off or overturning from the stencil 103 due to instantaneous force.

[0054] By fundamentally reducing the risk of failure in the pick-up process (such as printout collapse), these buffer designs ensure that the automated quick changeover process can be reliably and continuously cyclically operated, reducing downtime for reorganization due to pick-up failures, thereby further improving overall production efficiency.

[0055] In one embodiment of this application, such as Figure 3 and Figure 8 As shown, magnets 310 are installed at the four corners of the mesh plate 103, and sensors 320 are installed at one end of the telescopic rod 205. The four sensors 320 and the four magnets 310 are arranged in a one-to-one correspondence.

[0056] It should be noted that the sensor 320 described in this embodiment can be connected to an external controller to build an automated operation platform.

[0057] Specifically, when the crane assembly 201 of the gripping mechanism 200 drives the clamping assembly 202 to move towards the printed stencil 103, the sensors 320 installed at the ends of the four telescopic rods 205 approach the stencil 103. Upon reaching a certain distance, the sensors 320 begin to detect the magnetic field generated by the magnets 310 at their corresponding positions. The control system reads the signals from the four sensors 320 in real time. When all or a preset number of sensors 320 simultaneously and stably detect the magnet 310 signal, it indicates that the gripper assembly 206 has accurately positioned itself at the four corners of the predetermined gripping position on the stencil 103, and the stencil is approximately horizontal without significant tilting or displacement. At this point, the system determines that the positioning is successful and can safely initiate the next gripping action.

[0058] As a possible scenario, during and after the clamping action (such as the cylinder 203 driving the gripper component 206 to close), sensor 320 continuously monitors the presence of magnet 310. After clamping in place, a stable magnetic signal confirms that the screen 103 has been firmly gripped and its position has not slipped unexpectedly. This status signal can serve as a safety interlock condition, allowing the overhead crane assembly 201 to perform lifting and transfer operations. If any sensor 320 signal is unexpectedly lost before lifting or during transfer, the system can immediately determine that the gripping has failed (such as the screen 103 slipping) and trigger an emergency stop or alarm to prevent the equipment from running unloaded or the printed parts from falling and being damaged.

[0059] Understandably, through the coordinated detection of four sets of magnetic induction, the system can automatically and accurately determine the relative positional relationship between the gripper component 206 and the mesh plate 103, ensuring the accuracy of the starting point for each gripping operation. This avoids the gripping failure, edge collision, or scratches of the mesh plate 103 that may be caused by alignment deviations in purely mechanical "blind gripping," and is a key link in achieving highly reliable fully automatic operation.

[0060] In one embodiment of this application, such as Figure 8 and Figure 9 As shown, multiple buckles 410 are symmetrically arranged on the support component 101 near the mesh plate 103. The mesh plate 103 has corresponding mounting holes 420. A spring 430 is provided on one side of the buckle 410. The buckle 410 is placed in the mounting hole 420 and has a bevel.

[0061] Specifically, when the gripping mechanism 200 moves the mesh plate 103 to the predetermined position on the support assembly 101, the mesh plate 103 sinks under the action of the telescopic rod 205. At this time, the mounting holes 420 on the mesh plate 103 will be roughly aligned with the multiple buckles 410 symmetrically arranged on the support assembly 101. Since one side of the buckle 410 has a slope, during the lowering of the mesh plate 103, the edge of the mounting hole 420 will contact and slide along the slope. This process will automatically squeeze the buckle 410, causing it to shift to one side (in the direction of the compression spring 430), thereby opening the passage.

[0062] When the stencil 103 is fully seated on the bearing surface, the mounting hole 420 and the buckle 410 are fully aligned. At this time, the compressed spring 430 releases its elasticity, pushing the buckle 410 to reset, so that its head is locked into the mounting hole 420, thereby achieving reliable constraint and locking of the stencil 103 in the horizontal direction and preventing any displacement during the printing process.

[0063] After printing, the gripper component 206 of the gripping mechanism 200 clamps the side of the stencil 103 and performs a vertical lifting action. At the moment of initial lifting, the stencil 103 is subjected to an upward pulling force, and the latch 410 is fixed to the support component 101. At this time, the other side of the inclined surface of the latch 410 will interact with the upper edge of the mounting hole 420. The vertically upward force is converted into a component force through the inclined surface that causes the latch 410 to retract laterally again (compressing the spring 430).

[0064] As the mesh panel 103 continues to rise, the latch 410, guided by the inclined surface, completely exits from the mounting hole 420, and the mesh panel 103 is successfully released and detached from the support assembly 101. The entire unlocking process is naturally triggered by the removal action, requiring no additional dedicated unlocking drive or manual operation.

[0065] In one embodiment of this application, such as Figure 10 As shown, the overhead crane assembly 201 includes a mounting beam 2011, a connector 2012, a second drive motor 2013, a gear 2014, and a rack 2015.

[0066] The installation beam 2011 is fixed to the top of the house, the connector 2012 is rolled to the installation beam 2011, the second drive motor 2013 is mounted on the connector 2012, the gear 2014 is connected to the output shaft of the second drive motor 2013, and the rack 2015 is installed inside the installation beam 2011, with the gear 2014 meshing with the rack 2015.

[0067] Specifically, during the operation of the overhead crane assembly 201, the second drive motor 2013 is fixed to the connecting member 2012, serving as the power source for horizontal movement. Its output shaft drives the gear 2014 to rotate, and the gear 2014 meshes with the rack 2015 fixedly installed inside the mounting beam 2011. Based on the transmission principle of the gear 2014 and rack 2015, the rotational motion of the second drive motor 2013 is directly and without slippage converted into the linear motion of the gear 2014 along the rack 2015, thereby driving the entire connecting member 2012 and the clamping assembly 202 below it to move along the precise trajectory of the mounting beam 2011. By controlling the speed and angle of the second drive motor 2013, precise control of the horizontal position and moving speed of the clamping assembly 202 can be achieved.

[0068] The 3D printer according to embodiments of the present invention includes the 3D printing platform quick-change device in the above embodiments and has all the beneficial effects of the 3D printing platform quick-change device, so it will not be described again here.

[0069] In summary, the 3D printing platform quick-change device and 3D printer of this application embodiment, by arranging a gripping mechanism on one side of the main structure, realize automated part picking using the gripping mechanism, making it convenient to pick up the printed parts, and improving the automation level and production efficiency of the 3D printing process.

[0070] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0071] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0072] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0073] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0074] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A quick-change device for a 3D printing platform, characterized in that, include: The main structure (100) includes a support component (101) and a laser printing device (102), wherein, The laser printing device (102) is movably mounted on the carrier assembly (101), and the carrier assembly (101) is provided with a screen (103) for placing the printing target; A gripping mechanism (200) is arranged on one side of the main body (100), and the gripping mechanism (200) includes a crane assembly (201) and a clamping assembly (202), wherein, The overhead crane assembly (201) is installed on the roof of the building; The clamping assembly (202) is movably mounted on the overhead crane assembly (201) and is used to clamp the mesh plate (103).

2. The 3D printing platform quick-change device according to claim 1, characterized in that, A driving component (104) is provided between the laser printing device (102) and the carrier assembly (101). The driving component (104) includes a first drive motor (105) and two sets of conveyor pulleys (106). Two sets of conveyor belt pulleys (106) are symmetrically arranged on the bearing assembly (101), and the first drive motor (105) is mounted on one side of one set of conveyor belt pulleys (106); The laser printing device (102) is connected to the two sets of conveyor pulleys (106).

3. The 3D printing platform quick-change device according to claim 1, characterized in that, The clamping assembly (202) includes two cylinders (203), two cross rods (204), and four telescopic rods (205), wherein, One of the crossbars (204) is pivotally connected to the overhead crane assembly (201), and four of the telescopic rods (205) are respectively installed at one end of one of the crossbars (204); Two of the cylinders (203) are pivotally connected to the corresponding telescopic rods (205), and another cross rod (204) is provided on the four telescopic rods (205); The telescopic rod (205) is provided with a gripper component (206) at the end away from the crane assembly (201).

4. The 3D printing platform quick-change device according to claim 3, characterized in that, The gripper component (206) has a U-shaped cross-section.

5. The 3D printing platform quick-change device according to claim 3, characterized in that, The gripper component (206) includes a vertical plate (2061), a first horizontal plate (2062), an adaptive component (2063), and a second horizontal plate (2064), wherein, The vertical plate (2061) is pivotally connected to the telescopic rod (205), and the first horizontal plate (2062) is connected to the vertical plate (2061); The adaptive component (2063) is disposed inside the vertical plate (2061), and the second horizontal plate (2064) is connected to the adaptive component (2063).

6. The 3D printing platform quick-change device according to claim 3, characterized in that, The gripper component (206) is arranged in a roller structure. One end of the telescopic rod (205) is rotatably connected to the gripper component (206). The side wall of the mesh plate (103) is provided with an arc-shaped groove (2065). The diameter of the arc-shaped groove (2065) is larger than the diameter of the gripper component (206).

7. The 3D printing platform quick-change device according to claim 3, characterized in that, Magnets (310) are installed at the four corners of the mesh plate (103), and a sensor (320) is installed at one end of the telescopic rod (205). The four sensors (320) are arranged in a one-to-one correspondence with the four magnets (310).

8. The quick-change device for a 3D printing platform according to claim 1, characterized in that, Multiple buckles (410) are symmetrically arranged on the bearing component (101) near the mesh plate (103). The mesh plate (103) has corresponding mounting holes (420). A spring (430) is provided on one side of the buckle (410). The buckle (410) is placed in the mounting hole (420). The buckle (410) has a bevel.

9. The 3D printing platform quick-change device according to claim 1, characterized in that, The overhead crane assembly (201) includes a mounting beam (2011), a connector (2012), a second drive motor (2013), a gear (2014), and a rack (2015), wherein, The mounting beam (2011) is fixed to the roof of the house; The connector (2012) is tumbledly connected to the mounting beam (2011), the second drive motor (2013) is mounted on the connector (2012), the gear (2014) is connected to the output shaft of the second drive motor (2013), the rack (2015) is mounted inside the mounting beam (2011), and the gear (2014) meshes with the rack (2015).

10. A 3D printer, characterized in that, Includes the 3D printing platform quick-change device as described in any one of claims 1-9.

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