3D printer with double printing heads

Abstract

The utility model discloses a double-printing-head 3D printer which comprises a rack, a moving frame, a pair of moving seats, a first printing head, a second printing head, a printing platform and a three-dimensional moving mechanism, and the three-dimensional moving mechanism comprises a horizontal longitudinal sliding assembly, a horizontal transverse sliding assembly and a lifting sliding assembly; the horizontal transverse sliding assembly comprises a driving motor, a first synchronous wheel, a second synchronous wheel, a first synchronous belt, a first transverse sliding rail and a pair of first transverse sliding seats, the first transverse sliding rail is arranged on one side of the moving frame, and the two first transverse sliding seats are clamped on the first transverse sliding rail; the moving seats are fixed to the first transverse sliding seat, the first printing head and the second printing head are fixed to the two moving seats respectively, and the two moving seats are detachably and fixedly arranged on the same side or different sides of the first synchronous belt. The utility model has the advantage that the first printing head and the second printing head can be switched between the same-direction movement and the different-direction movement according to the product printing requirement.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing, in particular to a dual-printhead 3D printer. Background Art

[0002] 3D printing technology is a kind of rapid prototyping technology. It is a technology that constructs objects by layer-by-layer printing based on digital model files and using bondable materials such as powdered metals or plastics. At present, the 3D printer industry in China is in a period of rapid development and application. At present, most consumer-grade FDM printers are single-head designs, and the main body and support use the same material and are extruded by the same nozzle, resulting in slow printing efficiency.

[0003] Therefore, a dual-printhead 3D printer has emerged to improve the printing efficiency of 3D printers. Since the two printheads in the existing dual-printhead 3D printers are usually fixedly arranged, the two printheads can only move in the same direction during printing, which limits the types of products that can be printed by the dual-printhead 3D printer, and improvements need to be made. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a dual-printhead 3D printer that can switch the moving directions of the two printheads, so as to be able to print different types of products.

[0005] The utility model provides a dual-printhead 3D printer, which includes a frame, a moving frame, a pair of moving seats, a first printhead, a second printhead, a printing platform and a three-dimensional moving mechanism. The three-dimensional moving mechanism includes a horizontal longitudinal sliding component, a horizontal transverse sliding component and a lifting component. The moving frame is arranged on the frame. The horizontal longitudinal sliding component is located between the frame and the moving frame. The moving seats are arranged on the moving frame. The horizontal transverse sliding component is arranged between the moving seats and the moving frame. The lifting component is arranged at the bottom end of the printing platform.

[0006] The horizontal transverse sliding component includes a driving motor, a first synchronous pulley, a second synchronous pulley, a first synchronous belt, a first transverse sliding track and a pair of first transverse sliding seats. The first synchronous pulley is fixedly arranged on the rotating shaft of the driving motor. The second synchronous pulley is rotatably arranged on the moving frame. The first synchronous belt is wound around the first synchronous pulley and the second synchronous pulley. The first transverse sliding track is horizontally and fixedly arranged on one side of the moving frame. The two first transverse sliding seats are seated on the first transverse sliding track. The moving seats are fixed to the first transverse sliding seats. The first printhead and the second printhead are respectively fixed on the two moving seats. The two moving seats are detachably and fixedly arranged on the same side or different sides of the first synchronous belt.

[0007] Preferably, a fixed plate member is fixedly arranged between the moving seat and the first conveyor belt. The fixed plate member includes a fixed frame and a fixed plate. The fixed frame is fixedly arranged on the moving seat. The first conveyor belt is placed between the fixed frame and the fixed plate. The fixed frame and the fixed plate are fixed by bolt locking.

[0008] Preferably, the distance between the first print head and one side of the frame is set as "A", and the distance between the second print head and one side of the frame is set as "L", and A = L is satisfied.

[0009] Preferably, a second horizontal sliding track is fixedly arranged on the moving frame, and a second horizontal sliding seat is fixedly arranged at the bottom end of the moving seat. The second horizontal sliding seat is seated on the second horizontal sliding track.

[0010] Preferably, the horizontal and longitudinal sliding assembly includes a pair of longitudinal sliding tracks, a pair of longitudinal sliding seats, a power module, a rotating rod, a pair of third synchronous wheels, a pair of fourth synchronous wheels and a pair of second synchronous belts. The longitudinal sliding tracks are fixedly arranged on both sides of the frame. The two longitudinal sliding seats are seated on the longitudinal sliding tracks. The two ends of the moving frame are fixedly arranged on the longitudinal sliding seats;

[0011] The rotating rod is horizontally and transversely rotatably arranged on the frame. The two third synchronous wheels are fixedly arranged at both ends of the rotating rod. The two fourth synchronous wheels are rotatably arranged on the frame. The second synchronous belt is wound around the third synchronous wheel and the fourth synchronous wheel. The two longitudinal sliding seats are respectively fixed to the second synchronous belt. The power module drives the rotating rod to rotate.

[0012] Preferably, the power module includes a power motor, a driving wheel, a driven wheel and a third synchronous belt. The power motor is fixedly arranged on the frame. The driving wheel is fixedly arranged on the rotating shaft of the power motor. The driven wheel is fixedly arranged at one end of the rotating rod. The third synchronous belt is wound around the driving wheel and the driven wheel.

[0013] Preferably, the lifting assembly includes a driving module, a lead screw, a lifting nut seat and a guide rod. The lead screw is vertically arranged and is threadedly connected to the frame and the lifting nut seat. A guide hole is formed on the surface of the lifting nut seat. The guide rod is vertically fixedly arranged on the frame and passes through the guide hole. The driving module drives the lead screw to rotate.

[0014] Preferably, the printing platform includes a printing plate, a plurality of support beams and a plurality of buffer springs. The two ends of the support beam are fixedly arranged on the lifting nut seat. A plurality of the buffer springs are arranged between the printing plate and the support beam.

[0015] Preferably, a limiting rod is vertically fixedly arranged at the bottom end of the printing plate and passes through the buffer spring.

[0016] As can be seen from the above description of the present utility model, the present utility model has the following beneficial effects:

[0017] 1. The fixed plate member can be used to detachably and fixedly install the two moving seats and the first synchronous belt, so that the two moving seats can be fixedly installed on the same side or different sides of the first synchronous belt. The first print head and the second print head can be switched between moving in the same direction and moving in opposite directions, enriching the types of products that can be printed by the dual-print-head 3D printer.

[0018] 2. The printing platform is set to include a printing plate, a plurality of support beams and a plurality of buffer springs. The plurality of buffer springs are arranged between the printing plate and the support beams, and a limiting rod is vertically and fixedly arranged at the bottom end of the printing plate, so that the limiting rod passes through the buffer springs, thereby having a shock-absorbing effect on the printing plate and reducing the damage to the printed product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of a dual-print-head 3D printer according to an embodiment;

[0020] Figure 2 is a schematic diagram of the overall structure of the horizontal longitudinal sliding assembly according to an embodiment;

[0021] Figure 3 is a schematic diagram of a partial structure of the horizontal longitudinal sliding assembly according to an embodiment;

[0022] Figure 4 is a schematic diagram of the structure of the power module according to an embodiment;

[0023] Figure 5 is a schematic diagram of the overall structure of the horizontal transverse sliding assembly according to an embodiment;

[0024] Figure 6 is a schematic diagram of a partial structure of the horizontal transverse sliding assembly according to an embodiment;

[0025] Figure 7 is an embodiment Figure 6 partial enlarged view at A in;

[0026] Figure 8 is a schematic diagram of the structure of the lifting assembly according to an embodiment;

[0027] Figure 9 is a top view of the lifting nut seat according to an embodiment;

[0028] Figure 10 is a schematic diagram of a partial structure of the printing platform according to an embodiment.

[0029] Reference signs: 1, frame; 2, moving frame; 21, second transverse sliding track; 3, moving seat; 31, second transverse sliding seat; 4, first print head; 5, second print head; 6, printing platform; 61, printing plate; 62, support beam; 63, buffer spring; 64, limiting rod; 7, three-dimensional moving mechanism; 71, horizontal longitudinal sliding assembly; 711, longitudinal sliding track; 712, longitudinal sliding seat; 713, power module; 7131, power motor; 7132, driving wheel; 7133, driven wheel; 7134, third synchronous belt; 714, rotating rod; 715, third synchronous wheel; 716, fourth synchronous wheel; 717, second synchronous belt; 72, horizontal transverse sliding assembly; 721, driving motor; 722, first synchronous wheel; 723, second synchronous wheel; 724, first synchronous belt; 725, first transverse sliding track; 726, first transverse sliding seat; 73, lifting assembly; 731, driving module; 732, lead screw; 733, lifting nut seat; 7331, guiding hole; 734, guiding rod; 8, fixed plate member; 81, fixed frame; 82, fixed plate. Detailed implementation manners

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the Figures 1-10 accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0031] Referring to Figure 1 , a dual-print head 3D printer, including a frame 1, a moving frame 2, a pair of moving seats 3, a first print head 4, a second print head 5, a printing platform 6 and a three-dimensional moving mechanism 7. The three-dimensional moving mechanism 7 includes a horizontal transverse sliding assembly 72, a horizontal longitudinal sliding assembly 71 and a lifting assembly 73. In order to enable the moving frame 2 to perform horizontal longitudinal sliding on the frame 1, the horizontal longitudinal sliding assembly 71 is arranged between the moving frame 2 and the frame 1; in order to enable the moving seat 3 to perform horizontal transverse sliding on the moving frame 2, the horizontal transverse sliding assembly 72 is arranged between the moving seat 3 and the moving frame 2; in order to enable the printing platform 6 to perform lifting sliding in the frame 1, the lifting assembly 73 is arranged at the bottom end of the printing platform 6.

[0032] Referring to Figure 2 , Figure 3 and Figure 4, the horizontal and longitudinal sliding assembly 71 includes a pair of longitudinal sliding tracks 711, a pair of longitudinal sliding seats 712, a power module 713, a rotating rod 714, a pair of third synchronous pulleys 715, a pair of fourth synchronous pulleys 716 and a pair of second synchronous belts 717. The two longitudinal sliding tracks 711 are fixedly arranged on both sides of the frame 1, the two longitudinal sliding seats 712 are clamped on the longitudinal sliding tracks 711, both ends of the moving seat 3 are fixedly arranged on the longitudinal sliding seats 712, the rotating rod 714 is horizontally and transversely rotatably arranged on the frame 1, the two third synchronous pulleys 715 are fixedly arranged at both ends of the rotating rod 714, the two fourth synchronous pulleys 716 are rotatably arranged on the frame 1, the second synchronous belt 717 is wound around the third synchronous pulley 715 and the fourth synchronous pulley 716, and the longitudinal sliding seat 712 is fixed to the second synchronous belt 717.

[0033] The power module 713 includes a power motor 7131, a driving wheel 7132, a driven wheel 7133 and a third synchronous belt 7134. The power motor 7131 is fixedly arranged on the frame 1, the driving wheel 7132 is fixedly arranged on the rotating shaft of the power motor 7131, the driven wheel 7133 is fixed at one end of the rotating shaft, and the third synchronous belt 7134 is wound around the periphery of the driving wheel 7132 and the driven wheel 7133. The rotating shaft of the power motor 7131 rotates through the third synchronous belt 7134 to drive the driven wheel 7133 and the rotating rod 714 to rotate. The rotation of the rotating rod 714 drives the second synchronous belt 717 to transmit through the third synchronous pulley 715, so as to drive the moving frame 2 to realize horizontal and longitudinal sliding on the frame 1.

[0034] Refer to Figure 5 , Figure 6 and Figure 7, the horizontal lateral sliding assembly 72 includes a driving motor 721, a first synchronous pulley 722, a second synchronous pulley 723, a first synchronous belt 724, a first lateral sliding track 725 and a pair of first lateral sliding seats 726. The first lateral sliding track 725 is fixedly arranged on the side surface of the moving frame 2, the moving seat 3 is fixed to the first lateral sliding seat 726, and the two first lateral sliding seats 726 are seated on the first lateral sliding track 725. The driving motor 721 is fixedly arranged at one end of the moving frame 2, the first synchronous pulley 722 is fixedly arranged on the rotating shaft of the driving motor 721, the second synchronous pulley 723 is rotatably arranged at the other end of the moving frame 2, the first synchronous belt 724 is wound around the peripheries of the first synchronous pulley 722 and the second synchronous pulley 723, the two moving seats 3 are fixed to the same side of the first synchronous belt 724, and the rotation of the rotating shaft of the driving motor 721 drives the first synchronous belt 724 to convey. The first print head 4 and the second print head 5 are respectively fixedly arranged on the two moving seats 3. Since the two moving seats 3 are respectively fixed to the same side of the first synchronous belt 724, the first conveyor belt drives the first print head 4 and the second print head 5 to perform horizontal lateral sliding in the same direction on the moving frame 2 during the conveying process.

[0035] In order to enable the moving directions between the first print head 4 and the second print head 5 to be switched between the same direction and the opposite direction, the two moving seats 3 are respectively detachably and fixedly installed with the first synchronous belt 724 by using the fixing plate 82 parts 8. The fixing plate 82 parts 8 include a fixing frame 81 and a fixing plate 82. The vertical cross-section of the fixing frame 81 is in a "U" shape. The fixing frame 81 is fixedly installed on the moving seat 3. When the moving seat 3 and the first synchronous belt 724 are fixed by the fixing plate 82 parts 8, the first synchronous belt 724 is placed between the fixing frame 81 and the fixing plate 82, and the fixing frame 81 and the fixing plate 82 are fixed by bolt locking. By fixing the moving seat 3 and the first synchronous belt 724 by the fixing plate 82 parts 8, not only the fixing is firm, but also the disassembly is convenient.

[0036] In order to further enable the moving seat 3 to perform horizontal lateral sliding smoothly on the moving frame 2, a second lateral sliding track 21 is horizontally and fixedly arranged on the moving frame 2. Correspondingly, a second lateral sliding seat 31 is fixedly arranged at the bottom end of the moving seat 3, and the two second lateral sliding seats 31 are seated on the second lateral sliding track 21. By arranging the second lateral sliding track 21 and the second lateral sliding seat 31, the moving frame 2 realizes double-track sliding on the first lateral sliding track 725 and the second lateral sliding track 21, so as to avoid the phenomenon that the first lateral sliding seat 726 and the first lateral sliding track 725 fall off from each other.

[0037] Refer to Figure 8 and Figure 9, the lifting assembly 73 includes a driving module 731, a lead screw 732, a lifting nut seat 733, and a guide rod 734. A guide hole 7331 is formed on the surface of the lifting nut seat 733. The guide rod 734 is inserted into the guide hole 7331 of the lifting nut seat 733 and vertically fixed on the frame 1. The lead screw 732 is threadedly connected to the lifting nut seat 733 and the frame 1, so that the lifting nut seat 733 remains in a horizontal state. The printing platform 6 is horizontally fixed above the lifting nut seat 733. The driving module 731 drives the lead screw 732 to rotate. During the rotation of the lead screw 732, the lifting nut seat 733 is driven to lift along the guide rod 734, thereby driving the printing platform 6 to lift. The setting of the guide rod 734 guides the lifting of the lifting nut seat 733 to prevent the lifting nut seat 733 from shifting in position during the lifting process.

[0038] Referring to Figure 10 , in order to reduce the vibration phenomenon that occurs during the lifting of the printing platform 6, the printing platform 6 is set to include a printing plate 61, support beams 62, a plurality of buffer springs 63, and a plurality of limit rods 64. The support beams 62 are horizontally and transversely fixed on the lifting nut seat 733. A plurality of buffer springs 63 are arranged between the printing plate 61 and the lifting beam. The plurality of limit rods 64 are fixed to the bottom end of the printing plate 61, and each limit rod 64 is inserted into the buffer spring 63 to prevent the printing plate 61 from swinging. The setting of the buffer springs 63 buffers the printing plate 61.

[0039] The specific implementation principle of the embodiment of the present application is as follows: When using this dual-printing-head 3D printer for 3D printing, when the first print head 4 and the second print head 5 need to meet the requirement of moving in the same direction, the same side of the first synchronous belt 724 is placed between the fixed plate 82 and the fixed frame 81, and the fixed plate 82 and the fixed frame 81 are fixed by bolt locking. The first print head 4 and the second print head 5 start to work, extruding printing material onto the printing plate 61 of the printing platform 6. The buffer springs 63 located between the printing plate 61 and the support beams 62 buffer the printing plate 61. As the first print head 4 and the second print head 5 work, the driving module 731 drives the lead screw 732 to rotate, thereby driving the lifting nut seat 733 to lift along the guide rod 734. During the lifting process of the lifting nut seat 733, the printing platform 6 is driven to lift, thereby adjusting the distances between the printing plate 61 and the first print head 4 and the second print head 5 respectively.

[0040] When the first print head 4 and the second print head 5 are printing, in order to adjust the horizontal positions of the first print head 4 and the second print head 5 so that the horizontal positions of the first print head 4 and the second print head 5 are adapted to the positions required for printing on the product. The rotating shaft of the driving motor 721 rotates to drive the first synchronous belt 724 to transmit. During the transmission of the first synchronous belt 724, it drives the first transverse sliding seat 726 fixed to the moving seat 3 to slide on the first transverse sliding track 725, and the second transverse sliding seat 31 fixed to the moving frame 2 slides on the second transverse sliding track 21, so that the first print head 4 and the second print head 5 achieve horizontal transverse sliding. The rotating shaft of the power motor 7131 rotates to drive the rotating rod 714 to rotate, so that the third synchronous wheels 715 at both ends of the rotating rod 714 drive the second synchronous belt 717 to transmit, thereby driving the moving frame 2, the first print head 4 and the second print head 5 to achieve horizontal longitudinal sliding on the machine frame 1.

[0041] The above has made an exemplary description of the present utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the present utility model is not limited by the above methods. As long as various non-substantive improvements are made by adopting the method concept and technical solution of the present utility model, or the concept and technical solution of the present utility model are directly applied to other occasions without improvement, they are all within the protection scope of the present utility model.

Claims

1. A dual-print head 3D printer, characterized in that: The printing machine comprises a frame, a mobile frame, a pair of mobile seats, a first print head, a second print head, a printing platform and a three-dimensional moving mechanism, wherein the three-dimensional moving mechanism comprises a horizontal longitudinal sliding component, a horizontal transverse sliding component and a lifting component, wherein the mobile frame is arranged on the frame, the horizontal longitudinal sliding component is located between the frame and the mobile frame, the mobile seat is arranged on the mobile frame, the horizontal transverse sliding component is arranged between the mobile seat and the mobile frame, and the lifting component is arranged at the bottom end of the printing platform; The horizontal lateral sliding assembly includes a driving motor, a first synchronous wheel, a second synchronous wheel, a first synchronous belt, a first lateral sliding track and a pair of first lateral sliding seats, wherein the first synchronous wheel is fixedly arranged on the rotating shaft of the driving motor, the second synchronous wheel is rotatably arranged on the moving frame, the first synchronous belt is wound around the periphery of the first synchronous wheel and the second synchronous wheel, the first lateral sliding track is horizontally fixedly arranged on one side of the moving frame, and the two first lateral sliding seats are clamped on the first lateral sliding track; the moving seat is fixed to the first lateral sliding seat, the first print head and the second print head are respectively fixed on the two moving seats, and the two moving seats are detachably fixedly arranged on the same side or different sides of the first synchronous belt.

2. A dual-print head 3D printer according to claim 1, characterized in that: A fixed plate is fixedly arranged between the movable seat and the first conveyor belt, and the fixed plate comprises a fixed frame and a fixed plate. The fixed frame is fixedly arranged on the movable seat, and the first conveyor belt is placed between the fixed frame and the fixed plate. The fixed frame and the fixed plate are fixed by bolts.

3. A dual-print head 3D printer according to claim 1, characterized in that: The distance between the first print head and one side of the frame is set to "A", the distance between the second print head and one side of the frame is set to "L", and A=L is satisfied.

4. A dual-print head 3D printer according to claim 1, characterized in that: A second transverse sliding track is fixedly arranged on the moving frame, a second transverse sliding seat is fixedly arranged on the bottom end of the moving seat, and the second transverse sliding seat is clamped on the second transverse sliding track.

5. A dual-print head 3D printer according to claim 1, characterized in that: The horizontal longitudinal sliding assembly includes a pair of longitudinal sliding rails, a pair of longitudinal sliding seats, a power module, a rotating rod, a pair of third synchronous wheels, a pair of fourth synchronous wheels and a pair of second synchronous belts. The longitudinal sliding rails are fixedly arranged on both sides of the frame, the two longitudinal sliding seats are clamped on the longitudinal sliding rails, and the two ends of the moving frame are fixedly arranged on the longitudinal sliding seats. The rotating rod is horizontally and laterally rotatably arranged on the frame, the two third synchronous wheels are fixedly arranged at both ends of the rotating rod, the two fourth synchronous wheels are rotatably arranged on the frame, the second synchronous belt is wound around the third synchronous wheel and the fourth synchronous wheel, the two longitudinal sliding seats are respectively fixed to the second synchronous belt, and the power module drives the rotating rod to rotate.

6. A dual-print head 3D printer according to claim 5, characterized in that: The power module includes a power motor, a driving wheel, a driven wheel and a third synchronous belt. The power motor is fixed on the frame, the driving wheel is fixed on the rotating shaft of the power motor, the driven wheel is fixed on one end of the rotating rod, and the third synchronous belt is wound around the driving wheel and the driven wheel.

7. A dual-print head 3D printer according to claim 1, characterized in that: The lifting assembly includes a driving module, a screw rod, a lifting nut seat and a guide rod. The screw rod is vertically arranged and threadedly connected to the frame and the lifting nut seat. A guide hole is opened on the surface of the lifting nut seat. The guide rod is vertically fixed on the frame and passed through the guide hole. The driving module drives the screw rod to rotate.

8. A dual-print head 3D printer according to claim 7, characterized in that: The printing platform comprises a printing plate, a plurality of support beams and a plurality of buffer springs. Both ends of the support beams are fixedly arranged on a lifting nut seat, and the plurality of buffer springs are arranged between the printing plate and the support beams.

9. A dual-print head 3D printer according to claim 8, characterized in that: A limit rod is vertically fixed on the bottom end of the printing plate and is inserted into the buffer spring.

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