A printing build plate automatic replacement device

Abstract

The application is suitable for the field of 3D printing technology, and provides a printing construction plate automatic replacement device, which is suitable for a 3D printer with a printing nozzle, a construction platform and a printing construction plate, and comprises a toucher, a conduction unit, a movable top table, a storage box, a hooking unit and an additional block. The hooking unit is fixed to the first edge of the construction platform, and the additional block is fixed to the edge of the printing construction plate. The storage box is used for placing the printing construction plate and the additional block. The hooking unit is used for hooking the additional block to drive the printing construction plate to slide out of the storage box. The second edge of the construction platform hooks the additional block to drive the printing construction plate to slide out of the storage box, so that the construction platform adsorbs the printing construction plate. The toucher is connected with the conduction unit, and the conduction unit is connected with the movable top table. The printing nozzle pushes the toucher, so that the conduction unit drives the movable top table to lift upward and hook the additional block, and the printing construction plate is separated from the construction platform. The application can automatically replace the printing construction plate after printing to realize continuous printing.

Description

Technical Field

[0001] This application relates to the field of 3D printing technology, specifically to an automatic replacement device for printed build plates. Background Technology

[0002] Existing FDM printers typically have a printing build plate attached to the build platform. The model is formed and adhered to the printing build plate. After the model printing is completed, the printing build plate and the attached model need to be manually removed. The printing build plate can only be cleaned or replaced with a new one before a new printing process can begin.

[0003] Therefore, in order to meet the need for continuous printing under unattended conditions, a device capable of automatically changing the printing build plate needs to be proposed for application in 3D printers with printheads, build platforms and printing build plates. Utility Model Content

[0004] The purpose of this application is to provide an automatic build plate changing device, applicable to 3D printers with printheads, build platforms and print build plates, including: a trigger, a transmission unit, a movable top platform, a storage box, a hook unit and an attachment block.

[0005] The hook unit is fixed to the first edge of the construction platform; the attachment block is fixed to the edge of the printed construction board; the storage box is used to hold the printed construction board and the attachment block;

[0006] The hook unit is used to hook the attachment block to drive the printed build plate to slide out of the storage box; the second edge of the build platform hooks the attachment block to drive the printed build plate to slide out of the storage box, thereby allowing the build platform to attract and fix the printed build plate;

[0007] The actuator is connected to the transmission unit, which is connected to the movable top platform; the print head pushes the actuator, causing the transmission unit to drive the movable top platform to lift upward and hook the additional block, thereby helping the printed build plate to detach from the build platform;

[0008] Preferably, the actuator is a mechanical actuation method or an electronic triggering method.

[0009] As a first implementation option, the actuator includes: a fixed base, a lever, and a lever shaft; the fixed base is detachably fixed to the 3D printer; the lever is connected to the transmission unit; the lever shaft is connected to the fixed base; and the lever is movably connected to the fixed base with the lever shaft as the pivot point.

[0010] Furthermore, the actuator also includes a roller; the roller is disposed at the end of the lever; the roller is used to reduce friction.

[0011] Furthermore, the transmission unit includes: a pull wire and a conduit; the pull wire is disposed inside the conduit; one end of the pull wire is connected to the actuator; and the other end of the pull wire is connected to the movable top platform.

[0012] Furthermore, the actuator also includes: a tube end fixing groove; the tube end fixing groove is disposed on the fixing seat; one end of the conduit is fixed to the tube end fixing groove.

[0013] Furthermore, the movable top platform includes: a docking seat, a lifting frame, and a sliding block; the docking seat is detachably fixed to the 3D printer; the lifting frame is movably connected to the docking seat; the sliding block is connected to the transmission unit; the sliding block is movably connected to the docking seat; the sliding block is used to drive the lifting frame to lift upward.

[0014] Furthermore, the lifting frame is provided with an inclined surface; the sliding block is provided with a tooth; the tooth acts on the inclined surface to drive the lifting frame to lift upward.

[0015] Furthermore, the transmission unit also includes a reset spring; the reset spring is disposed between the conduit and the sliding block; the reset spring is used to reposition the lever and the sliding block.

[0016] As a second implementation option, the actuator includes: a mounting base and a trigger switch; the mounting base is detachably fixed to the 3D printer; the trigger switch is electrically connected to the conduction unit.

[0017] Furthermore, the conductive unit uses a wire; one end of the wire is connected to the actuator; the other end of the wire is connected to the movable top platform.

[0018] Furthermore, the movable top platform includes: a docking seat, a lifting frame, and a servo motor; the docking seat is detachably fixed to the 3D printer; the lifting frame is movably connected to the docking seat; the servo motor is electrically connected to the transmission unit; the servo motor is used to drive the lifting frame to lift upward.

[0019] Furthermore, the movable top platform also includes a docking buckle; the docking seat is detachably fixed to the 3D printer via the docking buckle.

[0020] As a common implementation option, the storage box includes: a box body and a connecting frame; the box body is connected to the connecting frame; the connecting frame is detachably fixed to the 3D printer; the box body is used to hold the printed build plate on which the additional block is fixed.

[0021] Furthermore, the storage box also includes a connecting buckle; the connecting frame is detachably fixed to the 3D printer via the connecting buckle.

[0022] Furthermore, the storage box also includes: a return bump and a buffer plate; the return bump is disposed in the middle of the box body to prevent the printed build plate from sliding back; the buffer plate is disposed on the edge of the box body in the sliding direction, and the buffer plate is used to reduce the impact noise when the printed build plate adsorbs the build platform.

[0023] Compared with the prior art, the beneficial effects of this application are:

[0024] 1. The automatic printing build plate replacement device proposed in this application embodiment can automatically replace the printing build plate after printing to achieve continuous printing without human intervention;

[0025] 2. The automatic printing build plate changing device proposed in this application embodiment can, by additional installation, modify the existing discontinuous printing method into a continuous printing method without changing the existing structure of the 3D printer;

[0026] 3. The automatic printing build plate replacement device proposed in this application adopts a mechanical triggering method. It can push the trigger through the print head, so that the transmission unit mechanically drives the movable top platform to lift the printing build plate upward, thereby helping the printing build plate to detach. The action is reliable and can realize continuous printing under mechanical action on the basis of the original printing control mechanism.

[0027] 4. The automatic replacement device for printing build plate proposed in this application adopts an electronically controlled triggering method, which can push the actuator through the print head, so that the transmission unit electrically drives the servo motor to lift the printing build plate upward, thereby helping the printing build plate to detach, and achieving a simpler structure;

[0028] 5. The automatic printing build plate changing device proposed in this application provides a buffer plate on the edge of the slide-out direction of the cartridge, which helps to reduce the impact noise when the printing build plate is adsorbed onto the build platform, and at the same time makes the bonding more gentle and precise. Attached Figure Description

[0029] Figure 1 This is an overall application embodiment of the automatic printing build board changing device of this application;

[0030] Figure 2 This is an embodiment of a 3D printer to which the embodiments of this application apply;

[0031] Figure 3 This is a partial exploded application diagram of the automatic board replacement device for printing in this application embodiment. Figure 1 ;

[0032] Figure 4 This is a partial exploded application diagram of the automatic board replacement device for printing in this application embodiment. Figure 2 ;

[0033] Figure 5 This is a schematic diagram of the hook unit in an embodiment of this application;

[0034] Figure 6 This is a schematic diagram illustrating the installation and application of the additional block in an embodiment of this application;

[0035] Figure 7 This is a schematic diagram of the hook unit hooking the additional block in an embodiment of this application. Figure 1 ;

[0036] Figure 8 This is a schematic diagram of the hook unit hooking the additional block in an embodiment of this application. Figure 2 ;

[0037] Figure 9 This is a schematic diagram illustrating the application of the top bump in an embodiment of this application;

[0038] Figure 10 This is a schematic diagram illustrating the printing build plate sliding out of the storage box and adsorbing onto the build platform according to an embodiment of this application;

[0039] Figure 11 A schematic diagram illustrating the movement of the platform to the active top platform in an embodiment of this application;

[0040] Figure 12 This is a schematic diagram of the active top platform lifting attachment block in an embodiment of this application;

[0041] Figure 13 This is a schematic diagram of the structure of the buffer tray in an embodiment of this application;

[0042] Figure 14 This is a schematic diagram illustrating the application of the buffer tray in an embodiment of this application;

[0043] Figure 15 This is a schematic diagram of the mechanical actuation and drive in an embodiment of this application;

[0044] Figure 16 This is a schematic diagram of the inner structure of the top support frame according to an embodiment of this application;

[0045] Figure 17 This is a schematic diagram of an electronically controlled trigger drive in an embodiment of this application. Figure 1 ;

[0046] Figure 18 This is a schematic diagram of an electronically controlled trigger drive in an embodiment of this application. Figure 2 .

[0047] Label Explanation:

[0048] Actuator 1; Conducting unit 2; Movable top platform 3; Storage box 4; Hook unit 5; Additional block 6; Fixed seat 11; Lever 12; Pipe end fixing groove 13; Trigger switch 14; Pull wire 21; Conduit 22; Return spring 23; Wire 24; Docking seat 31; Lifting frame 32; Sliding block 33; Docking buckle 34; Servo motor 35; Box body 41; Connecting frame 42; Connecting buckle 43; Lever shaft 121; Roller 122; Inclined surface 321; Protruding tooth 331; Push rod 351; Return protrusion 411; Buffer plate 412; 3D printer 100; Base 101; Guide rail 102; Z-axis column 103; Z-axis motor 104; X-axis movable axis 105; Printing nozzle 106; Building platform 107; Printing building plate 108; Molded workpiece 200. Detailed Implementation

[0049] To make the inventive objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0050] Figure 1 This is an overall application embodiment of the automatic build plate changing device for the 3D printer shown in the figure. The device includes: a trigger 1, a transmission unit 2, a movable top platform 3, a storage box 4, a hook unit 5, and an attachment block 6.

[0051] The hook unit 5 is fixed to the first edge of the construction platform; the attachment block 6 is fixed to the edge of the printed construction board; the storage box 4 is used to hold the printed construction board and the attachment block 6;

[0052] The hook unit 5 is used to hook the attachment block 6 to drive the printed build plate to slide out of the storage box 4; the second edge of the build platform hooks the attachment block 6 to drive the printed build plate to slide out of the storage box 4, thereby allowing the build platform to adsorb and fix the printed build plate.

[0053] Actuator 1 is connected to transmission unit 2, and transmission unit 2 is connected to movable top platform 3; the print head pushes actuator 1, causing transmission unit 2 to drive movable top platform 3 to lift upward and hook attachment block 6, thereby helping the print build plate to detach from the build platform.

[0054] Figure 2This is an embodiment of a 3D printer applicable to the present application. As shown in the figure, the 3D printer 100 exemplified in this figure includes a base 101, a guide rail 102, a Z-axis column 103, a Z-axis motor 104, an X-axis movable axis 105, a print head 106, a build platform 107, and a print build plate 108.

[0055] In the figure, a Y-axis guide rail 102 is provided on the base 101; the construction platform 107 moves along the Y-axis on the guide rail 102; the printed construction board 108 is attached to the construction platform 107.

[0056] Z-axis column 103 is connected to base 101; X-axis movable axis 105 moves along the Z-axis on Z-axis column 103; Z-axis motor 104 drives X-axis movable axis 105 to move up and down; Z-axis motor 104 moves up and down together with X-axis movable axis 105; print head 106 moves along the X-axis on X-axis movable axis 105; correspondingly, print head 106 can perform three-axis printing motion on print build plate 108.

[0057] Figure 3 This is a partial exploded application diagram of the automatic board replacement device for printing in this application embodiment. Figure 1 As shown in the figure, this diagram mainly illustrates the detachable and separable configuration of the actuator 1, the movable top platform 3, and the storage box 4; combined with... Figure 2 In the 3D printer 100 shown in the figure, the actuator 1 can be detachably connected to the Z-axis column 103; the movable top platform 3 can be detachably connected to the right side of the base 101; and the storage box 4 can be detachably connected to the left side of the base 101.

[0058] Figure 4 This is a partial exploded application diagram of the automatic board replacement device for printing in this application embodiment. Figure 2 As shown in the figure, this figure is... Figure 3 Based on this, the actuator 1, movable top platform 3, and storage box 4 are further disassembled;

[0059] Specifically, the actuator 1 includes: a fixed base 11, a lever 12, a tube end fixing groove 13, a lever shaft 121, and a roller 122; the fixed base 11 is detachably fixed to the Z-axis column 103 of the 3D printer; the lever 12 is connected to the transmission unit 2; the lever shaft 121 is connected to the fixed base 11; the lever 12 is movably connected to the fixed base 11 with the lever shaft 121 as the pivot point; the roller 122 is located at the end of the lever 12; the roller 122 is used to reduce friction; the tube end fixing groove 13 is located in the fixed base 11; combined with Figure 15 As you can see, one end of the conduit 22 is fixed to the tube end fixing groove 13.

[0060] Therefore when Figure 2 When the print head 106 moves laterally and pushes the lever 12, it can pull the lever with less effort by utilizing the lever principle. Figure 15 The pull wire 21 in the guide tube 22 shown drives the movable top platform 3 to lift upward, thereby realizing the mechanical triggering and lifting action.

[0061] In the figure, the storage box 4 includes: box body 41, connecting frame 42, connecting buckle 43, top return protrusion 411, and buffer tray 412;

[0062] Specifically, the housing 41 is used to hold the printing build plate with the additional block 6 fixed on it; the housing 41 is connected to the connecting frame 42; the connecting frame 42 is detachably fixed to the base 101 of the 3D printer 100 by the connecting buckle 43; and a back-top protrusion 411 is provided in the middle of the housing 41 to prevent the printing build plate from slipping due to friction contact when the build platform moves.

[0063] In the figure, the movable top platform 3 includes: a docking seat 31, a lifting frame 32, a sliding block 33, and a docking buckle 34; the docking seat 31 is detachably fixed to the base 101 of the 3D printer 100 via the docking buckle 34; the lifting frame 32 is movably connected to the docking seat 31; (Reference) Figure 15 It can be seen that the sliding block 33 is connected to the transmission unit 2; the sliding block 33 is movably connected to the docking seat 31; the sliding block 33 is used to drive the lifting frame 32 to lift upward.

[0064] Figure 5 This is a schematic diagram of the hook unit in an embodiment of this application. As shown in the figure, this figure is mainly used to illustrate the structure and function of the hook unit 5. In this figure, the hook unit 5 mainly consists of two parts. The first part is detachably connected to the build platform 107 of the 3D printer 100 directly through a dovetail groove. The second part is axially connected to the first part and forms a movable hook structure that can deflect downwards and recover its deflection by means of a torsion spring. (Reference) Figure 7 It can be seen that the hook unit 5 moves toward the additional block 6 fixed to the edge of the printed construction board 108. The second part needs to be able to deflect downwards to prevent direct contact with the additional block 6, and needs to recover the deflection to ensure that it can hook onto the additional block 6.

[0065] Figure 6 This is a schematic diagram illustrating the installation and application of the additional block in an embodiment of this application. As shown in the figure, the additional block 6 can be fixed to the edge of the printing build plate by means of screws or other fixing methods; and in this application solution, in order to achieve continuous printing in an unattended manner, the entire printing build plate needs to be equipped with the additional block 6.

[0066] Figure 7 This is a schematic diagram of the hook unit hooking the additional block in an embodiment of this application. Figure 1As shown in the figure, the housing is not shown to clearly show the hook unit 5 hooking the attachment block 6; the hook unit 5 is fixed at the left edge of the build platform 107, that is, at the first edge; the left side of the printed build plate 108 is located in the housing position; therefore, after the build platform 107 moves to the left end position, it can hook the attachment block 6 through the hook unit 5, and drive the printed build plate 108 to slide to the right out of the housing position.

[0067] Figure 8 This is a schematic diagram of the hook unit hooking the additional block in an embodiment of this application. Figure 2 As shown in the figure, this figure illustrates the position of the housing 41; the printed build plate 108 is placed in the housing 41; the build platform 107 moves on the guide rail 102; the build platform 107 can hook the attachment block 6 through the hook unit 5, which can drive the printed build plate 108 to slide out of the housing position in the direction of the arrow.

[0068] Figure 9 This is a schematic diagram illustrating the application of the return bump in an embodiment of this application. As shown in the figure, a return bump 411 is provided in the middle of the housing 41; it is used to prevent the printed build plate from slipping due to frictional contact during the movement of the build platform. This is because if the build platform 107 hooks and slides the printed build plate 108 out of the housing 41 through the hooking unit 5, then the build platform 107 and the printed build plate 108 are in a misaligned position. Therefore, after the printed build plate 108 has slid out about 1 / 2 of its area, the build platform 107 needs to retract. At this time, the printed build plate 108 bends downward due to deformation, causing the additional block 6 to contact the build platform 107 and generate friction. Therefore, in order to prevent the printed build plate 108 from slipping, the return bump 411 is needed to prevent it.

[0069] Figure 10 This is a schematic diagram illustrating how the printed build plate slides out of the storage compartment and attaches to the build platform in an embodiment of this application. As shown in the figure, the build platform 107 retracts to... Figure 9 The right edge of the build platform 107, i.e. the second edge, can hook the attachment block 6 to drive the printed build plate 108 to slide completely out of the storage box 4, so that the build platform 107 can adsorb and fix the printed build plate 108, i.e., the position shown in this figure.

[0070] Figure 11 This is a schematic diagram of the construction platform moving to the movable top platform according to an embodiment of this application. As shown in the figure, in conjunction with the situation in the figure above where the construction platform 107 adsorbs and fixes the printing construction plate 108, the 3D printer 100 can print the model on the printing construction plate 108; after printing is completed, the construction platform 107 moves along the guide rail 102 to the position shown in this figure, so that the printing construction plate 108 can be ready to detach.

[0071] Figure 12This is a schematic diagram of the active top platform lifting attachment block according to an embodiment of this application. As shown in the figure, after the 3D printer 100 completes printing, a shaped workpiece 200 is generated on its printing build plate 108; combined with Figure 15 It is understood that the print head 106 can push the lever 12, which drives the sliding block 33 through the pull wire 21, thereby driving the lifting frame 32 to lift upward and hook the attachment block 6, thus helping the print build plate 108 to detach from the build platform 107; at this time, the build platform 107 moves to the left along the guide rail 102, and the top of the lifting frame 32 can hook the attachment block 6; so that the print build plate 108 is completely detached from the build platform 107, thereby freeing up the suction position on the build platform 107 and preparing for the addition of a new print build plate 108.

[0072] Figure 13 This is a schematic diagram of the structure of the buffer tray in an embodiment of this application. As shown in the figure, a back-returning protrusion 411 is provided in the middle of the housing 41; a buffer tray 412 is provided on the edge of the housing 41 in the sliding direction; the buffer tray 412 is used to reduce the impact noise when the printing build plate is adsorbed onto the build platform; specifically, the buffer tray 412 is movably connected to the housing, can be deflected downwards, and can be rebounded and reset by means of a spring; a transition step is also provided on the buffer tray 412 to buffer the adsorption impact.

[0073] Figure 14 This is a schematic diagram illustrating the application of the buffer tray in an embodiment of this application. As shown in the figure, the right edge of the build platform 107, i.e., the second edge, can hook the attachment block 6 to drive the printed build plate 108 to slide out of the storage box 4. In the final stage when the printed build plate 108 is about to completely detach from the storage box 4, the left edge of the printed build plate 108 overlaps with the buffer tray 412, and the distance between the left edge and the build platform 107 is reduced by the movement and deflection of the buffer tray 412. When the build platform 107 continues to move to the right, the printed build plate 108 completely detaches from the buffer tray 412 and is adsorbed onto the build platform 107. At this time, the adsorption impact and impact noise can be reduced at a smaller distance.

[0074] Figure 15 This is a schematic diagram of the mechanical actuation and drive according to an embodiment of this application. As shown in the figure, the actuator 1 illustrated in the figure includes: a fixed base 11, a lever 12, a tube end fixing groove 13, a lever shaft 121, and a roller 122; combined with Figure 1 It can be seen that the mounting base 11 is detachably fixed to the top of the Z-axis column 103 of the 3D printer 100;

[0075] Specifically, the lever shaft 121 is connected to the fixed base 11; the lever 12 is movably connected to the fixed base 11 with the lever shaft 121 as the pivot point; the roller 122 is set at the end of the lever 12; the roller 122 is used to reduce friction; the tube end fixing groove 13 is set in the fixed base 11; one end of the guide tube 22 is fixed to the tube end fixing groove 13;

[0076] In addition, the transmission unit 2 includes: a pull wire 21, a conduit 22, and a return spring 23; the pull wire 21 is disposed inside the conduit 22; one end of the pull wire 21 is connected to the lever 12, and the other end is connected to the sliding block 33; the conduit 22 can be used for force guidance; the conduit 22 can be made of fluoropolymer tubing to reduce friction; the right end of the pull wire 21 is connected to the sliding block 33; and the sliding block 33 is provided with protrusions 331, which are combined with... Figure 16 From the perspective of the tooth 331, it can act on the inclined surface 321 to drive the lifting frame 32 to lift upward; when the pull cable 21 is pulled, it can drive the sliding block 33 to move; when the pull cable 21 is loosened, the return spring 23 can push the sliding block 33 to reset; correspondingly, it can also drive the lever 12 to reset.

[0077] Therefore when Figure 2 When the print head 106 moves laterally and pushes the lever 12, it can pull the lever with less effort by utilizing the lever principle. Figure 15 The pull wire 21 in the guide tube 22 shown drives the movable top platform 3 to lift upward, thereby realizing the mechanical triggering and lifting action.

[0078] Figure 16 This is a schematic diagram of the inner structure of the lifting frame according to an embodiment of this application. As shown in the figure, the lifting frame 32 has a U-shaped structure with an inclined surface 321 on its inner side; the sliding block 33 is provided with a tooth 331; the tooth 331 acts on the inclined surface 321 to drive the lifting frame 32 to lift upward.

[0079] Figure 17 This is a schematic diagram of an electronically controlled trigger drive in an embodiment of this application. Figure 1 As shown in the figure, the actuator 1 includes: a fixed base 11, a lever 12, a trigger switch 14, a lever shaft 121, and a roller 122; in addition, the transmission unit 2 uses a wire 24; a servo motor 35 is also used in the movable top platform 3; combined with Figure 18 It can be seen that the mounting base 11 is detachably fixed to the top of the Z-axis column 103 of the 3D printer 100;

[0080] Specifically, the lever shaft 121 is connected to the fixed base 11; the lever 12 is movably connected to the fixed base 11 with the lever shaft 121 as the pivot point; the roller 122 is set at the end of the lever 12; the roller 122 is used to reduce friction; the trigger switch 14 is set at the fixed base 11; one end of the wire 24 is electrically connected to the trigger switch 14, and the other end is electrically connected to the servo motor 35; the servo motor 35 can directly drive the lifting frame 32 to lift upward with the help of the push rod 351 or cam at the shaft end, so as to realize mechanical triggering and lifting action.

[0081] Figure 18 This is a schematic diagram of an electronically controlled trigger drive in an embodiment of this application. Figure 2As shown in the figure, the actuator 1 includes: a fixed base 11, a lever 12, a trigger switch 14, a lever shaft 121, and a roller 122; the movable top platform 3 includes: a docking seat 31, a lifting frame 32, a docking buckle 34, and a servo motor 35; in addition, the transmission unit 2 uses a wire 24.

[0082] The docking seat 31 is detachably fixed to the base 101 of the 3D printer 100 via the docking buckle 34; the lifting frame 32 is movably connected to the docking seat 31; the servo motor 35 is electrically connected to the transmission unit 2; the servo motor 35 directly drives the lifting frame 32 to lift upwards via the push rod or cam at the shaft end, so as to realize the electric triggering and lifting action.

[0083] The specific embodiments described above do not constitute a limitation on the scope of protection of this application. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. An automatic build plate changing device, suitable for a 3D printer having a print head, a build platform, and a print build plate, characterized in that, include: Actuator (1), transmission unit (2), movable top platform (3), storage box (4), hook unit (5), additional block (6); The hook unit (5) is fixed to the first edge of the construction platform; the attachment block (6) is fixed to the edge of the printed construction board; the storage box (4) is used to place the printed construction board and the attachment block (6). The hook unit (5) is used to hook the attachment block (6) to drive the printed build plate to slide out of the storage box (4); the second edge of the build platform hooks the attachment block (6) to drive the printed build plate to slide out of the storage box (4), thereby allowing the build platform to adsorb and fix the printed build plate; The actuator (1) is connected to the transmission unit (2), and the transmission unit (2) is connected to the movable top platform (3); the print head pushes the actuator (1), causing the transmission unit (2) to drive the movable top platform (3) to lift and hook the additional block (6), thereby helping the print build board to detach from the build platform.

2. The automatic printing build plate changing device according to claim 1, characterized in that, The actuator (1) adopts a mechanical actuation method or an electronic triggering method.

3. The automatic printing build plate changing device according to claim 1, characterized in that, The actuator (1) includes: a fixed base (11), a lever (12), and a lever shaft (121); the fixed base (11) is detachably fixed to the 3D printer; the lever (12) is connected to the transmission unit (2); the lever shaft (121) is connected to the fixed base (11); the lever (12) is movably connected to the fixed base (11) with the lever shaft (121) as the pivot point.

4. The automatic printing build plate changing device according to claim 3, characterized in that, The actuator (1) further includes a roller (122); the roller (122) is disposed at the end of the lever (12); the roller (122) is used to reduce friction.

5. The automatic printing build plate changing device according to claim 1, characterized in that, The transmission unit (2) includes: a pull wire (21) and a conduit (22); the pull wire (21) is disposed inside the conduit (22); one end of the pull wire (21) is connected to the actuator (1); the other end of the pull wire (21) is connected to the movable top platform (3).

6. The automatic printing build plate changing device according to claim 1, characterized in that, The actuator (1) further includes: a tube end fixing groove (13); the actuator (1) includes: a fixing seat (11); the conducting unit (2) includes: a conduit (22); the tube end fixing groove (13) is disposed on the fixing seat (11); one end of the conduit (22) is fixed to the tube end fixing groove (13).

7. The automatic printing build plate changing device according to claim 1, characterized in that, The movable top platform (3) includes: a docking seat (31), a lifting frame (32), and a sliding block (33); the docking seat (31) is detachably fixed to the 3D printer; the lifting frame (32) is movably connected to the docking seat (31); the sliding block (33) is connected to the transmission unit (2); the sliding block (33) is movably connected to the docking seat (31); the sliding block (33) is used to drive the lifting frame (32) to lift upward.

8. The automatic printing build plate changing device according to claim 7, characterized in that, The lifting frame (32) is provided with an inclined surface (321); the sliding block (33) is provided with a tooth (331); the tooth (331) acts on the inclined surface (321) to drive the lifting frame (32) to lift upward.

9. The automatic printing build plate changing device according to claim 1, characterized in that, The conducting unit (2) includes: a pull wire (21), a conduit (22), and a reset spring (23); the actuator (1) includes: a lever (12); the movable top platform (3) includes: a sliding block (33); the pull wire (21) is disposed inside the conduit (22); pushing the lever (12) is used to drive the sliding block (33) to move through the pull wire (21); the reset spring (23) is disposed between the conduit (22) and the sliding block (33); the reset spring (23) is used to reset the lever (12) and the sliding block (33).

10. The automatic printing build plate changing device according to claim 1, characterized in that, The actuator (1) includes: a fixed base (11) and a trigger switch (14); the fixed base (11) is detachably fixed to the 3D printer; the trigger switch (14) is electrically connected to the conduction unit (2).

11. The automatic printing build plate changing device according to claim 1, characterized in that, The conductive unit (2) uses a wire (24); one end of the wire (24) is connected to the actuator (1); the other end of the wire (24) is connected to the movable top platform (3).

12. The automatic printing build plate changing device according to claim 1, characterized in that, The movable top platform (3) includes: a docking seat (31), a lifting frame (32), and a servo motor (35); the docking seat (31) is detachably fixed to the 3D printer; the lifting frame (32) is movably connected to the docking seat (31); the servo motor (35) is electrically connected to the transmission unit (2); the servo motor (35) is used to drive the lifting frame (32) to lift upward.

13. The automatic printing build plate changing device according to claim 7 or 12, characterized in that, The movable top platform (3) also includes a docking buckle (34); the docking seat (31) is detachably fixed to the 3D printer by the docking buckle (34).

14. The automatic printing build plate changing device according to claim 1, characterized in that, The storage box (4) includes: a box body (41) and a connecting frame (42); the box body (41) is connected to the connecting frame (42); the connecting frame (42) is detachably fixed to the 3D printer; the box body (41) is used to place the printed construction plate on which the additional block (6) is fixed.

15. The automatic printing build plate changing device according to claim 14, characterized in that, The storage box (4) further includes a connecting buckle (43); the connecting frame (42) is detachably fixed to the 3D printer by the connecting buckle (43).

16. The automatic printing build plate changing device according to claim 14, characterized in that, The storage box (4) further includes: a top-returning protrusion (411) and a buffer plate (412); the top-returning protrusion (411) is located in the middle of the box body (41) to prevent the printed build plate from sliding back; the buffer plate (412) is located on the edge of the box body (41) in the sliding direction, and the buffer plate (412) is used to reduce the impact noise when the printed build plate adsorbs the build platform.

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