3D printer, recycled waste printing method, continuous printing method and object repairing method

Abstract

The 3D printer comprises a printer body, a three-dimensional modeling system, a feeding mechanism, a printing nozzle, a printing platform, a locking mechanism and a cutting mechanism, the feeding mechanism is fixedly connected with the printer body, and the outlet end of the feeding mechanism is connected with the printing nozzle; the printing nozzle moves relative to the printing platform to print an object on the printing platform, the three-dimensional modeling system can recognize the shape of the object on the printing platform, and the cutting mechanism cuts the object on the printing platform according to the recognition result of the three-dimensional modeling system; the printing platform is connected with the printer body through a first connecting structure, the printing nozzle is connected with the printer body through a second connecting structure, the cutting mechanism is connected with the printer body through a second lifting mechanism, and the locking mechanism is connected with the printing platform. The 3D printer is provided with a three-dimensional modeling system, can scan an object on a printing platform, determines a continuous printing position according to a scanning result and completes continuous printing work.

Description

Technical Field

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

[0002] In today's rapidly developing manufacturing field, as an extremely innovative and efficient manufacturing method, 3D printing technology is gradually changing the traditional production mode. By stacking materials layer by layer, it can convert digital design models into physical objects, providing powerful technical support for personalized customization, complex structure manufacturing, rapid prototyping, etc.

[0003] In the existing 3D printing process, due to the existence of various uncontrollable factors, such as power failures, material supply interruptions, print head blockages, software errors, etc., print tasks are often unexpectedly interrupted. Once an interruption occurs, most existing 3D printers often cannot automatically resume the print task, or the resume printing operation is extremely complex, bringing great inconvenience and losses to users. Specifically, when the printing is interrupted, the print head usually stops at the position at the time of interruption, and the semi-finished model on the printing platform is in an unfinished state. At this time, if the print task is directly restarted, the print head may collide with the printed part, resulting in damage to the model, or even damage to the print head and the printing platform. To avoid this situation, users often need to manually clean the semi-finished model on the printing platform, reload the material, reset the printing parameters, and then restart the print task. This process is very time-consuming and laborious, affecting the printing efficiency. Summary of the Invention

[0004] The object of the present invention is to provide a 3D printer, which has a three-dimensional modeling system, can scan the object on the printing platform, and determine the resume printing position and complete the resume printing work according to the scanning result.

[0005] To achieve the above object, the present invention provides a 3D printer, including a printer body, a three-dimensional modeling system, a feeding mechanism, a print head, a printing platform, a locking mechanism and a cutting mechanism. The feeding mechanism is fixedly connected to the printer body, and the outlet end of the feeding mechanism is connected to the print head for providing materials for the print head. The print head prints an object on the printing platform by relative movement with the printing platform. The three-dimensional modeling system can recognize the shape of the object on the printing platform, and the cutting mechanism cuts the object on the printing platform according to the recognition result of the three-dimensional modeling system;

[0006] The printing platform is connected to the printer body through a first connection structure, the print head is connected to the printer body through a second connection structure, the cutting mechanism is connected to the printer body through a second lifting mechanism, and the locking mechanism is connected to the printing platform for clamping the object on the printing platform.

[0007] Preferably, the first connection structure includes a translation mechanism, a flipping mechanism capable of driving the printing platform to flip, and a rotating mechanism capable of driving the printing platform to rotate. The rotating mechanism is connected to the flipping axis of the flipping mechanism, and the flipping mechanism is connected to the translation mechanism.

[0008] Preferably, the second connection structure includes a first lifting mechanism for driving the printing nozzle to lift and a translation mechanism for driving the printing nozzle to move horizontally. The printing nozzle is connected to the translation mechanism, and the translation mechanism is connected to the nut of the first lifting mechanism.

[0009] Preferably, the printing platform further includes a locking mechanism for clamping an object. The object can be reliably clamped on the printing platform through the locking structure.

[0010] Preferably, the 3D printer further includes a fourth drive. The fourth drive is respectively connected to the second lifting drive and the first lifting drive through a lever. The lever has two position states. By switching the position state of the lever, the fourth drive is switched to be connected to the second lifting drive or the first lifting drive.

[0011] Preferably, the feeding mechanism includes a waste crusher, a conveyor, and a feeding pipe. Both ends of the conveyor are respectively connected to the waste crusher and the feeding pipe, and the other end of the feeding pipe is connected to the printing nozzle.

[0012] The present invention also provides a method for printing recycled waste of the 3D printer as described above, including:

[0013] Step 1: Put the recycled waste into the waste crusher;

[0014] Step 2: Start the printer, and the printing nozzle of the printing support mechanism uses the waste for printing.

[0015] The 3D printer further includes a consumable bracket. The printing consumable is hung on the consumable bracket and enters the printing nozzle through a feeding gear.

[0016] The present invention also provides a method for continuous printing of the 3D printer as described above, including:

[0017] Step 1: Start the 3D modeling system to scan the object on the printing platform;

[0018] Step 2: Determine the continuous printing position according to the scanning result of Step 1;

[0019] Step 3: Adjust the position of the printing nozzle so that the printing nozzle aligns with the continuous printing position in Step 2;

[0020] Step 4: Start the printing nozzle to start printing.

[0021] Preferably, in step three, after finding the resume printing position, it is necessary to find the corresponding printing program corresponding to this resume printing position. Subsequently, in step four, the printing nozzle continues to execute the printing program from this position.

[0022] The present invention also provides a method for repairing an object of the 3D printer, including:

[0023] Step one: Start the camera to scan the object on the printing platform;

[0024] Step two: Compare the three-dimensional data model of the object obtained in step one with the ideal data model of the object, find the difference points, and mark these difference points;

[0025] Step three: Determine the cutting plan according to the marked difference points in step two, and at the same time determine the repair plan for the cutting plan;

[0026] Step four: According to the repair plan in step three, drive the printing platform and the printing nozzle to the target position and execute the repair plan.

[0027] According to the above technical solution, the present invention can provide printing materials to the printing nozzle through the feeding mechanism, control the relative movement between the printing nozzle and the printing platform according to the printing program in the printer, and release the materials while moving, so that the required object can be printed on the printing platform.

[0028] When the 3D printer encounters an interrupted printing situation, scan the object on the printing platform through the three-dimensional modeling system, mainly scanning the height of the object. After that, the printer can be controlled to delete the printing program of the completed height, and then the 3D printer executes the remaining printing program, so as to achieve the resume printing of the interrupted large object.

[0029] When it is necessary to repair a damaged object, first, the ideal three-dimensional data model of the object needs to be input into the 3D printer. Then, the damaged object is placed on the printing platform and clamped by the locking mechanism. The three-dimensional modeling system scans the object and generates the three-dimensional data model of the object. By comparing the actual data model of the object with the ideal data model, the damaged position can be judged, and the cutting and printing plans can be formulated.

[0030] The cutting mechanism can lift and lower along the height direction to cut the object. Flip the printing platform so that the height direction of the object clamped on the printing platform is parallel to the Y-axis. Then, the object can be cut along the height direction through the lifting cutting mechanism.

[0031] After the object is cut, flip the printing platform back to the normal position, start the printing nozzle, so that the printing nozzle reaches the printing height set in the printing plan, and then the resume printing operation for the cut part can be achieved.

[0032] When the printing platform rotates back to the normal position, the coordinate system where the object is located is consistent with the coordinate system determined in the printing plan.

[0033] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. Description of the Drawings

[0034] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the drawings:

[0035] Figure 1 is a schematic structural diagram of a 3D printer;

[0036] Figure 2 is a schematic structural diagram of a 3D printer;

[0037] Figure 3 is a schematic diagram of the connection state of the fourth drive driven by a lever;

[0038] Figure 4 is a schematic diagram of a second connection structure;

[0039] Figure 5 is a schematic diagram of a first connection structure;

[0040] Figure 6 is a top view of the printing platform;

[0041] Figure 7 A schematic diagram of a printing nozzle feeding control structure;

[0042] Figure 8 is a schematic diagram of a locking structure;

[0043] Figure 9 is a schematic diagram of a locking mechanism;

[0044] Figure 10 is a schematic diagram of a second lifting mechanism.

[0045] Description of the Reference Numerals

[0046] 11 First drive 12 First bevel gear

[0047] 13 Second bevel gear 14 First transmission member

[0048] 15 Rotation shaft 16 First connecting member

[0049] 17 Second connecting member 1 Printing platform

[0050] 18 Second drive 19 Rotating shaft

[0051] 191 Fourth bevel gear 151 Rotating sleeve

[0052] 110 Transmission rod 181 Third bevel gear

[0053] 111 Linear drive 112 Guide

[0054] 21 Timing belt 22 Moving block

[0055] 2 Print head 23 Guide rod

[0056] 24 First lifting drive 25 First guiding mechanism

[0057] 10 Printer body 31 Tool loading position

[0058] 32 Second lifting drive 33 Second guiding mechanism

[0059] 26 First connecting plate 41 Third drive

[0060] 42 Rotating disk 43 Locking block

[0061] 44 Third connecting piece 113 Sliding groove

[0062] 51 Fourth drive 52 Third transmission part

[0063] 53 Fourth transmission part 54 Fifth drive

[0064] 61 Feed inlet 62 Conveyor

[0065] 63 Feed pipe 64 Crushing structure

[0066] 65 Automatic opening and closing structure 66 PLA material

[0067] 661 Hanger 55 Pusher rod

[0068] 67 Feed gear Detailed implementation manners

[0069] The following is a detailed description of the specific implementation manners of the present invention with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only for the purpose of illustration and explanation of the present invention, and are not intended to limit the present invention.

[0070] In the present invention, unless otherwise stated, directional terms such as "one end, the other end, outer surface, axis, conical, close to", etc. included in the terms only represent the orientation of the terms in the normal use state, or the common names understood by those skilled in the art, and should not be regarded as a limitation of the terms.

[0071] See Figure 1-2The described 3D printer includes a printer body 10, a three-dimensional modeling system, a feeding mechanism, a printing nozzle 2, a printing platform 1, a locking mechanism, and a cutting mechanism. The feeding mechanism is fixedly connected to the printer body 10, and the outlet end of the feeding mechanism is connected to the printing nozzle 2 for providing materials to the printing nozzle 2. The printing nozzle 2 prints an object on the printing platform 1 by moving relative to the printing platform 1. A camera identifies the shape of the object on the printing platform 1, and the cutting mechanism cuts the object on the printing platform 1 according to the recognition result of the camera.

[0072] The printing platform 1 is connected to the printer body 10 through a first connection structure, the printing nozzle 2 is connected to the printer body 10 through a second connection structure, the cutting mechanism is connected to the printer body 10 through a second lifting mechanism, and the locking mechanism is connected to the printing platform 1 and can clamp the object on the printing platform 1.

[0073] Through the implementation of the above technical solution, the feeding mechanism can provide printing materials to the printing nozzle 2. By controlling the relative movement between the printing nozzle 2 and the printing platform 1 according to the printing program in the printer and releasing the materials during the movement, the required object can be printed on the printing platform.

[0074] When the 3D printer interrupts printing, the three-dimensional modeling system scans the object on the printing platform, mainly scanning the height of the object. Then, the printer can be controlled to delete the printing program of the completed height, and then the 3D printer executes the remaining printing program to achieve continuous printing of the interrupted object.

[0075] When it is necessary to repair a damaged object, first, the ideal three-dimensional data model of the object needs to be input into the 3D printer. Then, the damaged object is placed on the printing platform 1 and clamped by the locking mechanism. The three-dimensional modeling system scans the object and generates a three-dimensional data model of the object. By comparing the actual data model of the object with the ideal data model, the damaged position can be judged, and a cutting and printing plan can be formulated.

[0076] The cutting mechanism can lift and lower along the height direction to cut the object. The printing platform 1 is flipped so that the height direction of the object clamped on the printing platform 1 is parallel to the Y-axis. Then, the object can be cut along the height direction through the lifting cutting mechanism.

[0077] After the object is cut, the printing platform 1 is flipped back to the normal position, and the printing nozzle 2 is started so that the printing nozzle 2 reaches the printing height set in the printing plan. Then, the continuous printing operation of the cut part can be achieved.

[0078] When the printing platform 1 is turned back to the normal position, the coordinate system where the object is located is consistent with the coordinate system determined in the printing plan.

[0079] In one implementation, the cutting mechanism is fixedly connected to the second lifting mechanism through the tool loading position 31, and the second lifting mechanism drives the tool loading position 31 to lift and lower to cut the object.

[0080] The second lifting mechanism includes a second lifting drive 32 and a second guiding mechanism 33. The second lifting drive 32 is arranged as a lead screw and nut structure. The tool loading position 31 is fixedly connected to the nut. The second guiding mechanism 33 includes a slider and a guide rail that cooperates with the slider. The tool loading position 31 is fixedly connected to the slider. The cooperation between the slider and the guide rail prevents the tool loading position 31 from rotating. When the lead screw rotates, it can drive the nut to slide along the lead screw, thereby realizing the lifting of the tool.

[0081] In one implementation, the 3D modeling system uses structured light projection technology, including a structured light projector and a camera. The projector projects a specific light pattern, such as stripes, grids, or random dots, onto the surface of the object. Subsequently, the camera captures the deformed pattern, and then the depth information of the object surface is calculated through an algorithm, and the three-dimensional coordinates of the points on the object surface are traced and calculated.

[0082] The specific process is as follows: The structured light projector projects an encoded light pattern, and the camera captures the deformed pattern reflected from the surface of the object from a fixed perspective. The unevenness of the object surface causes the pattern to be distorted. Phase analysis is performed on the image captured by the camera, and then it is necessary to use the multi-frequency heterodyne method or Gray code to assist in expanding it into a continuous phase to eliminate ambiguity.

[0083] Finally, the two-dimensional image information is converted into point coordinates in a three-dimensional space through triangulation, thereby realizing the 3D modeling of the object.

[0084] Preferably, in cooperation with the rotation function of the printing platform 1, the projector and the camera can scan the object on the printing platform 1 from multiple angles, achieving multi-angle coverage of the object, thereby improving the model quality.

[0085] When the printing is interrupted due to factors such as power failure during the printing process, scanning the printed object through the 3D modeling system can obtain the 3D digital model of the object. Comparing this 3D digital model with the data model to be printed, finding the height at which the printing was interrupted, and moving the printing nozzle 2 to this height position can then resume the printing work, avoiding the problem of waste of materials and man-hours.

[0086] When some expensive workpieces made of materials are damaged, the damaged workpiece can be placed on the printing platform 1 and locked by a locking mechanism. After that, the damaged model is scanned by a three-dimensional modeling system, and the damaged position of the workpiece is identified by comparing it with the data model of the original workpiece. A cutting plan is designed according to the damaged position, and the damaged point of the workpiece is cut. After cutting, the data model of the original tool is installed through the printing nozzle 2 to repair and print the cut position of the workpiece, so as to complete the repair work of the workpiece at the lowest cost.

[0087] In this embodiment, preferably, the first connection structure includes a turning mechanism capable of driving the printing platform (1) to turn, a rotating mechanism capable of driving the printing platform (1) to rotate, and a translation mechanism. The rotating mechanism is connected to the turning axis (15) of the turning mechanism, and the turning mechanism is connected to the translation mechanism.

[0088] The first connection structure includes a turning mechanism, a rotating mechanism, and a translation mechanism.

[0089] The turning mechanism includes a first drive 11, a turning axis 15, and a first connecting member 16. The turning axis 15 is connected to the translation mechanism, and the translation mechanism can drive the turning axis 15 to move along the Y direction. The turning axis 15 is fixedly connected to the printing platform 1 through the first connecting member 16. The first drive 11 is fixedly arranged, and the first drive 11 drives the turning axis 15 to rotate. During the rotation of the turning axis 15, the first connecting member 16 and the printing platform 1 are driven to rotate around the axis of the turning axis 15 together.

[0090] The output shaft of the first drive 11 is connected to a first bevel gear 12. The first bevel gear 12 is engaged with a second bevel gear 13 through a first transmission member 14. The second bevel gear 13 is fixedly connected to the turning axis 15. Both ends of the first transmission member 14 are provided with bevel gears engaged with the first bevel gear 12 and the second bevel gear 13 respectively. After the first drive 11 is started, the first bevel gear 12 drives the first transmission member 14 engaged with it to rotate. The first transmission member 14 transmits the rotation to the second bevel gear 13 through the bevel gear at its other end. The second bevel gear 13 is driven to rotate, and while the second bevel gear 13 rotates, it can drive the first connecting member 16 and the printing platform 1 to rotate around the axis of the turning axis 15 together.

[0091] The first transmission member 14 is rotatably connected to the turning axis 15 through a second connecting member 17. Therefore, during the rotation of the turning axis 15, the first transmission member 14 can still maintain the stability of its relative position with respect to the first drive 11.

[0092] The rotating mechanism includes a second drive 18, a second transmission member, and a rotating shaft 19. The rotating shaft 19 is coaxially and fixedly connected to the printing platform 1. A fourth bevel gear 191 is arranged at the lower end of the rotating shaft 19. The second drive 18 drives the fourth bevel gear 191 through the second transmission member to drive the printing platform 1 to rotate.

[0093] A third bevel gear 181 is provided on the output shaft of the second driver 18. The second transmission member includes a rotating sleeve 151 sleeved on the turning shaft 15 and rotatably connected to the turning shaft 15, and a transmission rod 110 engaged with the third bevel gear 181. Bevel gears engaged with the fourth bevel gear 191 and the transmission rod 110 are respectively provided at both ends of the rotating sleeve 151, and bevel gears engaged with the rotating sleeve 151 and the third bevel gear 181 are provided at both ends of the transmission rod 110. In this way, the second driver 18 can drive the fourth bevel gear 191 to rotate, thereby realizing the rotation of the printing platform 1.

[0094] When the second driver 18 rotates, the third bevel gear 181 will drive the transmission rod 110 to rotate. One end of the transmission rod 110 engaged with the rotating sleeve 151 can drive the bevel gear of the rotating sleeve 151 to rotate, thereby driving the rotating sleeve 151 to rotate. At this time, the bevel gear at the other end of the rotating sleeve 151 can drive the fourth bevel gear 191 to rotate, and then drive the rotating shaft 19 to rotate, so as to realize the drive of the printing platform 1.

[0095] The first connecting member 16 is set as a U shape with the opening facing downwards. A through hole is provided at the bottom of the U shape. The rotating shaft 19 is sleeved in the through hole, and the rotating shaft 19 is rotatably connected to the first connecting member 16. That is, driven by the second driver 18, the rotating shaft 19 can freely rotate relative to the first connecting member 16.

[0096] One end of the U-shaped first connecting member 16 is fixedly connected to the turning shaft 15, and the other end is rotatably connected to the rotating sleeve 151. Preferably, an inwardly recessed installation position is provided on the rotating sleeve 151, and a collar is provided at one end of the first connecting member 16 connected to the rotating sleeve 151. The collar cooperates with the installation position and can limit the relative position of the rotating sleeve 151 and the turning shaft 15 in the length direction of the turning shaft 15.

[0097] Under the action of the first connecting member 16, only relative rotation can occur between the rotating sleeve 151 and the turning shaft 15, and relative sliding cannot occur between the rotating sleeve 151 and the turning shaft 15, so that the position of the rotating sleeve 151 relative to the second driver 18 and the rotating shaft 19 remains unchanged, which can ensure the driving effect of the second driver 18 on the rotating shaft 19.

[0098] When the first drive 11 drives the printing platform 1 to flip, the rotation shaft 15 will rotate. The first connecting member 16 fixedly connected to the rotation shaft 15 will drive the printing platform 1 to flip together, thereby achieving the rotation effect of the printing platform 1. Since the rotating sleeve 151 is rotatably connected to the rotation shaft 15, the rotating sleeve 151 will not rotate together with the rotation shaft 15. The rotating sleeve 151 is also rotatably connected to the first connecting member 16. Therefore, when the first connecting member 16 rotates with the rotation shaft 15, the rotating sleeve 151 will rotate relative to the first connecting member 16, and the rotating sleeve 151 will not have absolute rotation. Therefore, by setting the rotating sleeve 151, it is possible to prevent the rotating sleeve 151 from rotating when the printing platform 1 flips.

[0099] When the second drive 18 drives the printing platform 1 to rotate, the transmission rod 110 will drive the rotating sleeve 151 to rotate. During the rotation of the rotating sleeve 151, the fourth bevel gear 191 will rotate, and at the same time drive the printing platform 1 to rotate. Since the rotation of the rotating sleeve 151 does not affect the position of the rotation shaft 15, the rotation of the printing platform 1 will not affect the flipping mechanism of the printing platform 1.

[0100] The translation mechanism includes a linear drive 111, and the linear drive 111 can be set as a lead screw nut mechanism. The rotation shaft 15 is matched with the rotating lead screw through a nut.

[0101] The rotation shaft 15 is connected to the second drive 18 and the first drive 1 through a frame structure, so that the flipping mechanism and the rotating mechanism can be fixed to the frame as a module. This module is fixedly connected to the nut, and the printing platform 1 can be driven to move linearly by rotating the lead screw. Preferably, a guide 112 is provided at a position parallel to the rotating lead screw for guiding the translation process of the printing platform 1.

[0102] In this embodiment, preferably, the second connection structure includes a first lifting mechanism for driving the printing head 2 to lift and a translation mechanism for driving the printing head 2 to move horizontally. The printing head 2 is connected to the translation mechanism, and the translation mechanism is connected to the nut of the lifting mechanism.

[0103] The second connection structure includes a first lifting mechanism for driving the printing head 2 to lift and a translation mechanism for driving the printing head 2 to move horizontally.

[0104] The translation mechanism includes a synchronous belt 21 and a moving block 22 that cooperates with the synchronous belt 21. The moving block 22 is fixedly connected to the printing head 2. During the rotation of the synchronous belt 21, it can drive the moving block 22 to move in a straight line direction, thereby achieving the horizontal movement effect of the printing head 2. In order to ensure the stability of the movement process of the printing head 2, preferably, a guide rod 23 is provided along the moving direction of the printing head 2, and the moving block 22 cooperates with the guide rod 23 to achieve reciprocating horizontal movement.

[0105] The first lifting mechanism includes a first lifting drive 24 and a first guiding mechanism 25. The lifting drive can be set as a lead screw and nut. The translation mechanism is fixedly connected to the nut through a first connecting plate 26. By rotating the lead screw, the nut is driven to rise or fall, thereby driving the entire translation mechanism to rise or fall, and further realizing the rise or fall of the printing head 2. The setting of the first guiding mechanism 25 can ensure the stability of the lifting process of the printing head 2.

[0106] In this embodiment, preferably, the printing platform 1 further includes a locking mechanism for the object, and the object can be reliably clamped on the printing platform 1 through the locking structure.

[0107] When the locking mechanism is used to lock the object on the printing platform 1, it can ensure that the object does not fall off when the first connecting mechanism drives the object to flip.

[0108] The locking mechanism includes a third drive 41, a rotating disk 42 cooperating with the third drive 41, a third connecting member 44, and a locking block 43. A sliding groove 113 is provided on the printing platform 1, and the locking block 43 is located in the sliding groove 113 and can slide along the sliding groove 113. The third drive 41 is fixed below the rotating disk 42, and the third drive 41 is in transmission cooperation with the rotating disk 42 through bevel gears. After the third drive 41 is started, it can drive the rotating disk 42 to rotate. The lower end of the locking block 43 is rotatably connected to one end of the third connecting member 44, and the other end of the third connecting member 44 is rotatably connected to the rotating disk 42.

[0109] When the third drive 41 drives the rotating disk 42 to rotate, the position where the third connecting member 44 is connected to the rotating disk 42 will also perform a rotational movement, and the other end of the third connecting member 44 will pull the locking block 43 to slide along the sliding groove 113. During the sliding process of the locking block 43, it will gradually approach or move away from the center of the printing platform 1, thereby realizing the clamping or releasing of the object. At least three third connecting members 44 are provided, and a plurality of third connecting members 44 are evenly distributed along the rotating disk 42. The plurality of third connecting members 44 act synchronously, and can clamp or relax the object placed on the printing platform 1. When the locking mechanism clamps the object, it can also synchronously center the object.

[0110] The rotating disk 42 is rotatably connected to the rotating shaft 19. The rotating disk 42 is provided with a through hole for cooperating with the rotating shaft 19, and the rotating shaft 19 cooperates with the printing platform 1 through this through hole. The rotating shaft 19 and the rotating disk 42 do not affect each other. When the rotating shaft 19 drives the printing platform 1 to rotate, the rotating disk 42 will not rotate.

[0111] Under the action of the second connecting structure, the print head 2 has the freedom to move along the X-axis and Z-axis directions. Combined with the translational action of the first connecting structure on the printing platform 1 along the Y direction, the print head has the freedom to move along the X, Y, and Z directions relative to the printing platform 1, and can realize 3D printing.

[0112] In this embodiment, preferably, the 3D printer also includes a fourth drive 51, which is connected to the second lifting drive 32 and the first lifting drive 24 respectively through a lever 55. The lever 55 has two positions, and the fourth drive 51 is switched to be connected to the second lifting drive 32 or the first lifting drive 24 by switching the position of the lever 55.

[0113] The fourth drive 51 is connected to the first lifting drive 24 via a third transmission member 52 . The third transmission member 52 is rotationally connected to the shifting rod 55 . The third transmission member 52 can be pushed by the shifting rod 55 to move closer to or away from the fourth drive 51 .

[0114] The two ends of the shifting rod 55 are respectively provided with fourth transmission members 53 , and the two fourth transmission members 53 are respectively engaged in transmission with the fourth drive 51 and the second lifting drive 32 .

[0115] The fourth transmission member 53 includes a bevel gear that engages with the fourth drive 51 and a transmission gear coaxially fixedly connected to the bevel gear. This transmission gear meshes with the transmission gears at both ends of the shifting rod 55. Therefore, the fourth drive 51, through the fourth transmission member 53, can drive the shifting rod 55 to rotate. The transmission gear at the other end of the shifting rod 55, through gear meshing, drives the rotating screw of the second lifting drive 32.

[0116] Transmission gears are respectively provided at both ends of the lever 55. The third transmission member 52 is located in the middle of the lever 55. The position state of the lever 55 can be switched by pushing and pulling the lever 55. When the lever 55 is in different positions, the third transmission member 52 and the fourth transmission member 53 respectively cooperate with the fourth drive 51.

[0117] The shift rod 55 is pushed by the fifth drive 54, and the fifth drive 54 is set as a cylinder. When the cylinder extends, the fourth transmission member 53 enters and cooperates with the fourth drive 51, and the shift rod 55 is located in a position to cooperate with the second lifting drive 32. When the cylinder retracts, the third transmission member 52 enters and cooperates with the fourth drive 51, and the fourth transmission member 53 exits the cooperation with the fourth drive 51.

[0118] In this embodiment, preferably, the feeding mechanism includes a waste crusher, a conveyor 62 and a feed pipe 63, the two ends of the conveyor 62 are respectively connected to the waste crusher and the feed pipe 63, and the other end of the feed pipe 63 is connected to one of the print heads 2.

[0119] The waste crusher includes a feed inlet 61 and a crushing structure 64 connected successively from top to bottom. The recovered support structure or the materials with printing failures can be put into the crushing structure 64 through the feed inlet 61 and crushed in the lower crushing structure 64. The crushed materials are sent into the feed pipe 63 through the conveyor 62 and finally enter the printing nozzle 2.

[0120] The conveyor 62 lifts the crushed materials to the position of the printing nozzle 2 through a spiral conveying structure. In one embodiment, the conveyor 62 is set as a spiral reamer. When the crushed materials enter the spiral reamer, they will be continuously pushed forward as the spiral reamer rotates. During the conveying process, the spiral reamer can not only convey the materials, but also extrude and mix the materials through the rotation of the reamer, so as to further crush and mix the materials during the conveying process.

[0121] The feed pipe 63 is connected to the printing nozzle 2 through an automatic opening and closing structure 65. The automatic opening and closing structure 65 is set as a device similar to an iris structure. By adjusting the opening size of the iris structure, the feeding speed of the printing nozzle 2 can be controlled.

[0122] Since the printing nozzle 2 can move along the X-axis and Z-axis, the feed pipe 63 is set as a flexible pipe to adapt to the position change between the outlet of the conveyor 62 and the printing nozzle 2.

[0123] The 3D printer also includes a hanger 661, and printing materials such as PLA materials 66 are fixed through the hanger 661. Another printing nozzle 2 is directly connected to the PLA material 66, and the PLA material 66 is evenly and reliably input into the printing nozzle 2 through the feeding gear 67.

[0124] The present invention also provides a method for printing recycled waste of a 3D printer, including:

[0125] Step 1: Put the recycled waste into the waste crusher;

[0126] Step 2: Start the printer, and the printing nozzle 2 of the support mechanism uses the waste for printing.

[0127] The feeding mechanism is connected to the printing nozzle 2 of the printing support structure of the 3D printer and is used to provide waste for the printing nozzle 2 for printing.

[0128] Another printing nozzle 2 uses the PLA material 66, and the PLA material 66 can be evenly and reliably input into the printing nozzle 2 through the feeding gear 67.

[0129] The present invention also provides a method for continuous printing of a 3D printer, including:

[0130] Step 1: Start the three-dimensional modeling system to scan the object on the printing platform 1;

[0131] Step 2: Determine the position for continuous printing based on the scanning result of Step 1;

[0132] Step 3: Adjust the position of the printing nozzle 2 so that the printing nozzle 2 aligns with the continuous printing position in Step 2;

[0133] Step 4: Start the printing nozzle 2 to start printing.

[0134] Scan the object on the printing platform 1 through a 3D modeling system to obtain a 3D data model of the object. By comparing it with the printing data model of the object, find the interrupted point. After moving the printing nozzle 2 to this position and starting the printer, continuing to execute the printing program from this interrupted point can achieve continuous printing of the object. Preferably, identify the height of the object through the 3D modeling system, find the printing program corresponding to this height according to the printing program, and execute the printing program after this height position to achieve the continuous printing operation of the object.

[0135] Preferably, while adjusting the printing nozzle 2, the rotating platform also needs to be adjusted accordingly so that the printing nozzle 2 cooperates with the printing platform to form the position of the printing interruption point.

[0136] In this embodiment, preferably, in Step 3, after finding the continuous printing position, find the corresponding printing program for this continuous printing point, and continue to execute the printing program from this position. Subsequently, in Step 4, the printing nozzle 2 executes this printing program.

[0137] The present invention also provides a method for repairing an object of a 3D printer, including:

[0138] Step 1: Start the camera to scan the object on the printing platform 1;

[0139] Step 2: Compare the 3D data model of the object obtained in Step 1 with the ideal data model of the object, find the different points, and mark these different points;

[0140] Step 3: Determine the cutting scheme based on the marked different points in Step 2, and at the same time determine the repair scheme for the cutting scheme;

[0141] Step 4: According to the repair scheme in Step 3, drive the printing platform 1 and the printing nozzle 2 to the target position and execute the repair scheme.

[0142] The object on the printing platform 1 is scanned by a 3D modeling system to obtain the corresponding 3D data model. By comparing the ideal 3D data model of the object, the damaged position of the object can be determined. After the damaged position is determined, a cutting plan can be calculated. The cutting plan includes recording the cutting plan and the repair printing plan corresponding to the cutting plan. According to the cutting plan, a motion plan for the cutting mechanism is formulated. The motion plan of the cutting machine includes the flipping and rotating plans of the printing platform 1.

[0143] In one implementation, if there is wear on the side of the object, the cutting plan can be set to cut off the part containing the worn position along the Z-axis. By flipping the printing platform 1, the height direction of the object can be made parallel to the Y-direction. By translating the printing platform 1 through the translation mechanism, the position of the cutting tool can be exactly corresponding to the position where the object needs to be cut. Starting the second lifting mechanism, the cutting operation of the object on the printing platform 1 can be completed by using the lifting of the cutting tool.

[0144] After that, by flipping the printing platform 1, the object is still set with the height direction parallel to the opposite of the Z-axis, and the part to be printed is transformed through coordinates to form a new printing program. Starting the printing nozzle 2 can start the repair printing of the object.

[0145] In one implementation, if the ideal data model of the object is not pre-stored in the 3D printer, the ideal data model of the object can be obtained by scanning a qualified product.

[0146] In this implementation, in step three, when formulating the cutting plan for the difference points determined in step two, axial cutting is preferably considered, while taking into account the principle of minimizing the cutting material.

[0147] When repairing and printing the object, due to the flipping and rotation of the printing platform 1, therefore, the original 3D data model of the object needs to be transformed into a new coordinate system. Axial cutting can reduce the computational complexity and can easily solve the new printing program.

[0148] Less cutting material means less material is needed for repair, which is beneficial to saving the repair cost.

[0149] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0150] In addition, it should be noted that in the above specific embodiments, the various specific technical features described can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the present invention does not separately describe various possible combination methods.

[0151] In addition, any combination can be made among various different embodiments of the present invention, as long as it does not violate the idea of the present invention, and it should equally be regarded as the content disclosed by the present invention.

Claims

1. A 3D printer, characterized in that, It includes a printer body (10), a 3D modeling system, a feeding mechanism, a printing nozzle (2), a printing platform (1), a locking mechanism, and a cutting mechanism. The feeding mechanism is fixedly connected to the printer body (10), and the outlet end of the feeding mechanism is connected to the printing nozzle (2) for providing materials to the printing nozzle (2). The printing nozzle (2) prints an object on the printing platform (1) by moving relative to the printing platform (1). The 3D modeling system can recognize the shape of the object on the printing platform (1), and the cutting mechanism cuts the object on the printing platform (1) according to the recognition result of the 3D modeling system; The printing platform (1) is connected to the printer body (10) through a first connection structure, the printing nozzle (2) is connected to the printer body (10) through a second connection structure, the cutting mechanism is connected to the printer body (10) through a second lifting mechanism, and the locking mechanism is connected to the printing platform (1) for clamping the object on the printing platform (1).

2. The 3D printer according to claim 1, characterized in that, The first connection structure includes a translation mechanism, a flipping mechanism capable of driving the printing platform (1) to flip, and a rotating mechanism capable of driving the printing platform (1) to rotate. The rotating mechanism is connected to the rotating shaft (15) of the flipping mechanism, and the flipping mechanism is connected to the translation mechanism.

3. The 3D printer according to claim 2, characterized in that, The second connection structure includes a first lifting mechanism for driving the printing nozzle (2) to lift and a translation mechanism for driving the printing nozzle (2) to move horizontally. The printing nozzle (2) is connected to the translation mechanism, and the translation mechanism is connected to the nut of the first lifting mechanism.

4. The 3D printer according to claim 3, characterized in that, The printing platform (1) also includes a locking mechanism for clamping the object. The object can be reliably clamped on the printing platform (1) through the locking mechanism.

5. The 3D printer according to claim 4, wherein, The 3D printer also includes a fourth drive. The fourth drive is respectively connected to the second lifting drive (32) and the first lifting drive (24) through a lever (55). The lever (55) has two position states. By switching the position state of the lever (55), the fourth drive is switched to be connected to the second lifting drive (32) or the first lifting drive (24).

6. The 3D printer according to claim 1, wherein The feeding mechanism includes a waste crusher, a conveyor (62), and a feed pipe (63). The two ends of the conveyor (62) are respectively connected to the waste crusher and the feed pipe (63), and the other end of the feed pipe (63) is connected to the printing nozzle (2).

7. A method for printing recycled waste of the 3D printer described in claim 6, characterized in that, It includes: Step 1: Put the recycled waste into the waste crusher; Step 2: Start the printer, and the printing nozzle (2) of the printing support mechanism uses the waste for printing. The 3D printer also includes a consumable bracket. The printing consumable is hung on the consumable bracket and enters the printing nozzle (2) through a feed gear (67).

8. A method for continuous printing of a 3D printer according to any one of claims 1-6, characterized in that, It includes: Step 1: Start the 3D modeling system to scan the object on the printing platform (1); Step 2: Determine the position for continued printing according to the scanning result of Step 1; Step 3: Adjust the position of the printing nozzle (2) so that the printing nozzle (2) is aligned with the position for continued printing in Step 2; Step 4: Start the printing nozzle (2) to start printing.

9. The continuous printing method according to claim 8, wherein In Step 3, after finding the position for continued printing, it is necessary to find the corresponding printing program corresponding to this position for continued printing. Subsequently, in Step 4, the printing nozzle (2) continues to execute the printing program from this position.

10. A method for repairing an object of a 3D printer according to any one of claims 1-6, characterized in that, It includes: Step 1: Start the camera to scan the object on the printing platform (1); Step 2: Compare the three-dimensional data model of the object obtained in Step 1 with the ideal data model of the object, find the difference points, and mark these difference points; Step 3: Determine the cutting plan based on the marked difference points in Step 2, and at the same time determine the repair plan for the cutting plan; Step 4: According to the repair plan in Step 3, drive the printing platform (1) and the printing nozzle (2) to the target position and execute the repair plan.

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