3D printer

Abstract

The utility model relates to a 3D printer. The 3D printer comprises a rack device; the printing platform device is erected on the rack device, the printing platform device is provided with a first side edge and a second side edge which are opposite to each other, and the printing platform device can move in the Z direction relative to the rack device; the first lifting device is connected with the first side edge and controls the first side edge to move in the Z direction; the second lifting device is connected with the second side edge and controls the second side edge to move in the Z direction; and the first lifting device and the second lifting device are configured to independently control the first side edge and the second side edge to move respectively. The 3D printer solves the problem that vertical movement of a printing platform device is blocked, and normal printing and printing precision of the 3D printer are affected.

Description

Technical Field

[0001] This application relates to the field of 3D printing, and in particular to a 3D printer. Background Technology

[0002] Fused Deposition Modeling (FDM) is a technology that builds 3D models by depositing molten consumables layer by layer. Therefore, 3D printers based on FDM technology usually have a Z-axis screw that supports the printing platform device. After printing a layer, the Z-axis screw is controlled to achieve the lifting of the printing platform device to achieve layer-by-layer 3D printing. However, when the interface of the printing platform device is large, the support is easily unstable, resulting in the obstruction of the up and down movement of the printing platform device, affecting the normal printing and printing accuracy of the 3D printer. SUMMARY OF THE INVENTION

[0003] The present application provides a 3D printer, which enables the printing platform device to rise and fall more stably, thereby solving the problem that the up and down movement of the printing platform device is blocked, affecting the normal printing and printing accuracy of the 3D printer.

[0004] The 3D printer provided in this application includes:

[0005] Rack mount;

[0006] A printing platform device is mounted on the frame device, the printing platform device has a first side and a second side opposite to each other, and can move along the Z direction relative to the frame device;

[0007] A first lifting device, connected to and controlling the first side edge to move along the Z direction; and

[0008] A second lifting device, connected to and controlling the second side edge to move along the Z direction;

[0009] Wherein, the first lifting device and the second lifting device are configured to independently control the movement of the first side and the second side, respectively.

[0010] Furthermore, the first lifting device / second lifting device includes a first driving assembly and a lifting assembly, the lifting assembly is arranged parallel to the first side edge / second side edge, and the lifting assembly includes a Z-direction screw rod drivingly connected to the printing platform device and a Z-direction guide rod for guiding.

[0011] Furthermore, the lifting assembly includes two Z-direction screw rods and two Z-direction guide rods, which are respectively arranged near the two ends of the first side / the second side, and the first driving assembly is arranged in the middle position of the two Z-direction screw rods.

[0012] Furthermore, the first lifting device / second lifting device also includes a first transmission assembly, which includes a first driving wheel, a first driven wheel and a transmission belt. The first driving wheel is fixed to the output end of the first driving assembly, and there are two first driven wheels, which are fixed to the two Z-direction screw rods one by one. The transmission belt cooperates with the first driving wheel and the first driven wheel to transmit the steering power output by the first driving assembly to the first driving wheel to the two first driven wheels.

[0013] Furthermore, the first transmission assembly further comprises two tensioning wheels respectively matched with the transmission belt, and the two tensioning wheels are symmetrically arranged with respect to the first driving wheel.

[0014] Furthermore, the rack device includes a frame assembly and a connecting assembly fixed to the frame assembly, the connecting assembly is arranged in a one-to-one correspondence with the first lifting device / the second lifting device, the first driving assembly and the Z-direction guide rod are fixed to the corresponding connecting assembly, and the Z-direction screw rod is rotatably connected to the corresponding connecting assembly.

[0015] Furthermore, the connection assembly is detachably connected to the frame assembly, and the position of the connection assembly in the Z direction is adjustable.

[0016] Furthermore, the printing platform device includes a base component and a matching component fixed to the base component, and the matching component is correspondingly connected to the lifting component.

[0017] Furthermore, the printing platform device also includes a conveyor belt, and an active rod and a driven rod rotatably connected to the base assembly, the active rod and the driven rod are connected by the conveyor belt, and the conveyor belt is used to convey the 3D printed model along the Y direction.

[0018] Furthermore, the 3D printer also includes a translation device connected to the frame device, and the translation device is set above the printing platform device and is used to move the nozzle device along the X direction.

[0019] Compared with the prior art, the beneficial features of the present application are: in the 3D printer, the first lifting device is connected to and controls the first side edge to move in the Z direction, the second lifting device is connected to and controls the second side edge to move in the Z direction, and the first lifting device and the second lifting device are configured to independently control the movement of the first side edge and the second side edge, respectively, which can more stably support the printing platform device, so that the printing platform device can be lifted and lowered more stably, thereby solving the problem that the up and down movement of the printing platform device is blocked, affecting the normal printing and printing accuracy of the 3D printer. Brief Description of the Figures

[0020] Figure 1 Is the perspective view of the 3D printer according to the embodiment of the present application;

[0021] Figure 2 Is the perspective view of the 3D printer according to the embodiment of the present application with a part of the frame device removed;

[0022] Figure 3 Is the perspective view of the 3D printer according to the embodiment of the present application with a part of the frame device removed;

[0023] Figure 4 Is Figure 3 The enlarged view of the partial A of

[0024] Figure 5 Is the bottom view of the 3D printer according to the embodiment of the present application with a part of the frame device removed;

[0025] Figure 6 Is the perspective view of the 3D printer according to the embodiment of the present application with a part of the frame device and the conveyor belt removed;

[0026] Figure 7 Is the perspective view of the 3D printer according to the embodiment of the present application with a part of the frame device removed;

[0027] Figure 8 Is the perspective view of the 3D printer according to the embodiment of the present application with a part of the frame device and the support device removed;

[0028] Wherein: 1 - frame device (101 - frame assembly, 102 - connection assembly (1021 - first connection beam, 1022 - second connection beam)), 2 - printing platform device (201 - base assembly, 202 - mating assembly, 203 - conveyor belt, 204 - driving rod, 205 - driven rod, 206 - first side, 207 - second side), 3a - first lifting device, 3b - second lifting device (301 - first driving assembly (3011 - output shaft), 302 - lifting assembly (3021 - Z-direction screw rod, 3022 - Z-direction guide rod), 303 - first transmission assembly (3031 - first driving wheel, 3032 - first driven wheel, 3033 - transmission belt, 3034 - tensioning wheel)), 4 - translation device (401 - second driving assembly, 402 - second transmission assembly (4021 - second driving wheel, 4022 - second driven wheel, 4023 - moving belt (4023a - end of the moving belt))), 5 - support device (501 - support assembly). Detailed implementation manners

[0029] To facilitate the understanding of the present application, the present application will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the description of this application in this specification are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0032] Please refer to Figure 1 and Figure 2 , the 3D printer of the embodiment of the present application includes a frame device 1, a printing platform device 2, a first lifting device 3a, and a second lifting device 3b. The printing platform device 2 is mounted on the frame device 1. The printing platform device 2 has opposite first and second sides 206 and 207. The printing platform device 2 can move relative to the frame device 1 in the Z direction. The first lifting device 3a is connected to the first side 206 and controls the first side 206 to move in the Z direction. The second lifting device 3b is connected to the second side 207 and controls the second side 207 to move in the Z direction. Moreover, the first lifting device 3a and the second lifting device 3b are configured to independently control the movement of the first side 206 and the second side 207 respectively.

[0033] The first lifting device 3a of the 3D printer of the embodiment of the present application is connected to and controls the first side 206 to move in the Z direction, the second lifting device 3b is connected to and controls the second side 207 to move in the Z direction, and the first lifting device 3a and the second lifting device 3b are configured to independently control the movement of the first side 206 and the second side 207 respectively, which can more stably support the printing platform device 2 and enable the printing platform device 2 to lift more stably, thus solving the problem that the up and down movement of the printing platform device 2 is blocked, affecting the normal printing and printing accuracy of the 3D printer.

[0034] Please refer to Figure 2, the above-mentioned first lifting device 3a may include a first driving component 301 and a lifting component 302. The lifting component 302 is arranged parallel to the first side 206. The lifting component 302 includes a Z-direction screw rod 3021 and a Z-direction guide rod 3022. The Z-direction screw rod 3021 is in transmission connection with the printing platform device 2, and the Z-direction guide rod 3022 is used for guiding the printing platform device 2 in the Z direction.

[0035] Please refer to Figure 2 , the above-mentioned second lifting device 3b may have the same structure as the first lifting device 3a. The second lifting device 3b includes a first driving component 301 and a lifting component 302. The lifting component 302 is arranged parallel to the second side 207. The lifting component 302 includes a Z-direction screw rod 3021 and a Z-direction guide rod 3022. The Z-direction screw rod 3021 is in transmission connection with the printing platform device 2, and the Z-direction guide rod 3022 is used for guiding the printing platform device 2 in the Z direction.

[0036] In some examples, the Z-direction screw rod 3021 may be in threaded fit with the printing platform device 2 to achieve transmission connection. It can be understood that in other embodiments, the Z-direction screw rod 3021 and the printing platform device 2 may adopt other fitting methods to achieve transmission connection, which is not limited herein.

[0037] Optionally, the above-mentioned lifting component 302 may include two Z-direction screw rods 3021 and two Z-direction guide rods 3022.

[0038] Further, one of the Z-direction screw rods 3021 and one of the Z-direction guide rods 3022 of the first lifting device 3a are arranged at one end close to the first side 206, and the other Z-direction screw rod 3021 and the other Z-direction guide rod 3022 of the first lifting device 3a are arranged at the other end close to the first side 206. The first driving component 301 is arranged at the middle position between the two Z-direction screw rods 3021.

[0039] It can be understood that the structure of the second lifting device 3b may be the same as that of the first lifting device 3a. One of the Z-direction screw rods 3021 and one of the Z-direction guide rods 3022 of the second lifting device 3b are arranged at one end close to the second side 207, and the other Z-direction screw rod 3021 and the other Z-direction guide rod 3022 of the second lifting device 3b are arranged at the other end close to the second side 207. The first driving component 301 is arranged at the middle position between the two Z-direction screw rods 3021.

[0040] Please refer to Figure 3 and Figure 4, the above-mentioned first lifting device 3a may further include a first transmission assembly 303. It can be understood that the second lifting device 3b may also include a first transmission assembly 303. The first transmission assembly 303 is in transmission connection with the first driving assembly 301 and the Z-direction lead screws 3021 of the two lifting assemblies 302, so as to transmit the steering power provided by the first driving assembly 301 to the Z-direction lead screws 3021.

[0041] Optionally, the first transmission assembly 303 may include a first driving wheel 3031, a first driven wheel 3032 and a transmission belt 3033, please refer to Figure 3 and Figure 4 . The first driving wheel 3031 is fixed to the output end of the first driving assembly 301. There are two first driven wheels 3032, and the two first driven wheels 3032 are arranged in one-to-one correspondence with the two Z-direction lead screws 3021. Each first driven wheel 3032 is fixed to one end of the corresponding Z-direction lead screw 3021 in the axial direction. The transmission belt 3033 cooperates with the first driving wheel 3031 and the two first driven wheels 3032, so as to transmit the steering power output by the first driving assembly 301 to the first driving wheel 3031 to the two first driven wheels 3032 respectively, so as to realize the synchronous rotation of the two Z-direction lead screws 3021 in the same lifting device.

[0042] As an example, please refer to Figure 4 , the first driving assembly 301 may be a motor, and the first driving wheel 3031 may be fixed to the output shaft 3011 of the first driving assembly 301. When the output shaft 3011 of the first driving assembly 301 rotates, the first driving wheel 3031 rotates synchronously with the output shaft 3011 of the first driving assembly 301, and then transmits the steering power output by the first driving assembly 301 to the first driving wheel 3031 to the two first driven wheels 3032 respectively through the transmission belt 3033. Since the two first driven wheels 3032 are fixedly arranged in one-to-one correspondence with the two Z-direction lead screws 3021, the two Z-direction lead screws 3021 can be rotated synchronously. Please refer to Figure 5 , when the first driving assemblies 301 of the first lifting device 3a and the second lifting device 3b work synchronously, all the Z-direction lead screws 3021 in the first lifting device 3a and the second lifting device 3b can rotate synchronously, so that the printing platform device 2 can rise or fall smoothly.

[0043] Please refer to Figure 4 , the above-mentioned first transmission assembly 303 may further include two tension wheels 3034, so as to improve the transmission performance of the first transmission assembly 303. The two tension wheels 3034 cooperate with the transmission belt 3033 respectively to tension the transmission belt 3033. The two tension wheels 3034 are symmetrically arranged with respect to the first driving wheel 3031 to improve the tensioning effect of the tension wheels 3034.

[0044] Optionally, please refer to Figure 2 and Figure 3 , the rack device 1 may include a frame component 101 and a connection component 102. There are two connection components 102, and the two connection components 102 are respectively fixed to the two ends of the frame component 101 in the X direction. Moreover, the two connection components 102 are arranged in one-to-one correspondence with the two lifting devices 3. Each first driving component 301 is fixed to the corresponding connection component 102. Each Z-direction screw rod 3021 is rotatably connected to the corresponding connection component 102. Each Z-direction guide rod 3022 is fixed to the corresponding connection component 102.

[0045] Furthermore, the connection component 102 is detachably connected to the frame component 101, and the position of the connection component 102 in the Z direction is adjustable. For example, the connection component 102 and the frame component 101 can be connected by a threaded member (not shown in the figure), and the threaded member can be a screw, or a bolt and a nut that cooperate with each other, etc. It can be understood that the connection component 102 and the frame component 101 can also be connected by other structures, which are not limited herein. Since the first lifting device 3a and the second lifting device 3b are arranged on the connection component 102, if there is a problem of assembly inclination, the position of one of the connection components 102 or both connection components 102 in the Z direction can be adjusted to adjust the position of the corresponding lifting device 3 as a whole in the Z direction, so as to realize the leveling of the printing platform device 2, which is convenient to use and easy to level.

[0046] As an example, please refer to Figure 2 and Figure 3 , the connection component 102 may include a first connection beam 1021 and a second connection beam 1022. The first connection beam 1021 and the second connection beam 1022 are arranged at intervals in the Z direction. The first connection beam 1021 and the second connection beam 1022 can be fixed into one body. When loading and unloading, the first connection beam 1021 and the second connection beam 1022 are installed on the frame component 101 as a whole at the same time, or removed from the frame component 101 at the same time. Alternatively, the first connection beam 1021 and the second connection beam 1022 can also be detachably connected to the frame component 101 respectively.

[0047] It can be understood that, please refer to Figure 2 and Figure 3, one end of the Z-direction of the Z-direction screw rod 3021 is rotatably connected to the first connecting beam 1021 of the corresponding connecting assembly 102, and the other end of the Z-direction of the Z-direction screw rod 3021 is rotatably connected to the second connecting beam 1022 of the corresponding connecting assembly 102. The first driving assembly 301 is fixed to the second connecting beam 1022 of the corresponding connecting assembly 102. One end of the Z-direction of the Z-direction guide rod 3022 is connected to the first connecting beam 1021 of the corresponding connecting assembly 102, and the other end of the Z-direction of the Z-direction guide rod 3022 is connected to the second connecting beam 1022 of the corresponding connecting assembly 102.

[0048] Optionally, please refer to Figure 2 and Figure 3 , the printing platform device 2 may include a base component 201 and a matching component 202. There are four matching components 202, and the four matching components 202 are respectively fixed to the base component 201, and the four matching components 202 are connected to the Z-axis screw rod 3021 in a one-to-one correspondence. As an example, the matching component 202 can be threadedly connected to the Z-axis screw rod 3021. For example, the Z-axis screw rod 3021 is provided with an external thread, and the matching component 202 is provided with a threaded hole (not shown) that matches the Z-axis screw rod 3021, and the Z-axis screw rod 3021 is penetrated into the threaded hole. The matching component 202 can also be provided with a guide hole (not shown) that matches the Z-axis guide rod 3022. The Z-axis guide rod 3022 is penetrated in the guide hole, so as to guide the printing platform device 2 in the Z direction.

[0049] The printing platform device 2 may further include a conveyor belt 203, an active rod 204 and a driven rod 205. Please refer to Figure 6 , the active rod 204 and the driven rod 205 are rotatably connected to the two ends of the base assembly 201 in the Y direction, and the axis of the active rod 204 and the axis of the driven rod 205 extend along the X direction and are parallel to each other. In addition, please refer to Figure 2 and Figure 3 The active rod 204 and the driven rod 205 are also connected by a conveyor belt 203, and the conveyor belt 203 is used to convey the 3D printed model along the Y direction.

[0050] It can be understood that the printing platform device 2 can also include a third driving component (not shown). The third driving component can be fixed to the base component 201, and the third driving component is used to drive the active rod 204 to rotate around the axis of the active rod 204, so that the conveyor belt 203 conveys the 3D printed model along the Y direction.

[0051] Please refer to Figure 7 and 8 ​​, the above 3D printer may further include a translation device 4. The translation device 4 is connected to the frame device 1, and the translation device 4 is disposed above the printing platform device 2. The translation device 4 is used to move the nozzle device (not shown in the figure) in the X direction.

[0052] Optionally, please refer to Figure 7 and 8 , there are two translation devices 4. The two translation devices 4 are arranged at intervals in the Z direction, and the two translation devices 4 are respectively connected to the nozzle device. When it is necessary to move the nozzle device, the two translation devices 4 can work synchronously, so that the nozzle device can move more smoothly.

[0053] Furthermore, please refer to Figure 8 , each translation device 4 may include a second driving component 401 and a second transmission component 402. The second transmission component 402 includes a second driving wheel 4021, a plurality of second driven wheels 4022 and a moving belt 4023. The second driving wheel 4021 is rotatably connected to the frame device 1, and the second driving wheel 4021 is also fixed to the output end of the second driving component 401. Each second driven wheel 4022 is respectively rotatably connected to the frame device 1. The moving belt 4023 cooperates with the second driving wheel 4021 and the plurality of second driven wheels 4022, and the two end portions 4023a of the moving belt 4023 are respectively fixed to the nozzle device. The second driving component 401 is fixed to the frame device 1, and the second driving component 401 is used to drive the moving belt 4023 to drive the nozzle device fixed to the moving belt 4023 to move in the X direction.

[0054] As an example, please refer to Figure 8 , the second driving component 401 may be a motor. The second driving wheel 4021 may be fixed to the output shaft of the second driving component 401. When the output shaft of the second driving component 401 in each translation device 4 rotates, the second driving wheel 4021 rotates synchronously with the output shaft of the second driving component 401. The rotation of the second driving wheel 4021 drives the moving belt 4023 to move and the second driven wheels 4022 to rotate. The moving belt 4023 drives the nozzle device fixed to the moving belt 4023 to move in the X direction. When the second driving components 401 in the two translation devices 4 work synchronously, the moving belts 4023 in the two lifting devices 3 can move synchronously, so that the nozzle device can effectively move in the X direction.

[0055] It can be understood that the cooperation between the second driving wheel 4021 and the plurality of second driven wheels 4022 can also tension the moving belt 4023, further improving the printing accuracy.

[0056] Please refer to Figure 6 and 7, the above 3D printer may further include a support device 5. The support device 5 is fixed to the frame device 1 and is disposed above the printing platform device 2. The support device 5 is used to support and guide the nozzle device in the X direction, so that the nozzle device can move more stably in the X direction, further improving the printing progress.

[0057] It can be understood that if the printing platform device 2 includes a base component 201 and a mating component 202, the support device 5 can be fixed to the base component 201.

[0058] Optionally, please refer to Figure 6 and 7 , the support device 5 includes one support component 501 or multiple support components 501. The support component 501 extends in the X direction and passes through the nozzle device, so that the nozzle device can move in the X direction on the support component 501.

[0059] In some examples, the support device 5 may include one support component 501.

[0060] In some examples, the support device 5 may include two support components 501 arranged in parallel. The two support components 501 can be spaced apart in the Z direction, and the two support components 501 are respectively fixed to the frame device 1. The nozzle device passes through the two support components 501 at the same time, further enabling the nozzle device to move more stably in the X direction.

[0061] In other examples, the support device 5 may include two support components 501 arranged in parallel. The two support components 501 can be spaced apart in the Y direction, and the two support components 501 are respectively fixed to the frame device 1. The nozzle device passes through the two support components 501 at the same time, further enabling the nozzle device to move more stably in the X direction.

[0062] It can be understood that in other embodiments, the support device 5 may further include more support components 501, and the support components 501 may also be of other structures or arranged in other ways, which are not limited herein.

[0063] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0064] The above embodiments only represent the preferred embodiments of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patented application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. 3D printer, characterized in that, include: Rack device; A printing platform device is mounted on the frame device, the printing platform device has a first side and a second side opposite to each other, and can move along the Z direction relative to the frame device; A first lifting device, connected to and controlling the first side edge to move along the Z direction; as well as A second lifting device, connected to and controlling the second side edge to move along the Z direction; Among them, the first lifting device and the second lifting device are configured to independently control the movement of the first side and the second side respectively; the first lifting device / the second lifting device includes a first driving component and a lifting component, the lifting component is arranged parallel to the first side / the second side, the lifting component includes a Z-axis screw rod transmission-connected to the printing platform device and a Z-axis guide rod for guiding, the first driving component is used to drive the Z-axis screw rod to rotate so that the first side / the second side moves along the Z direction.

2. The 3D printer according to claim 1, characterized in that: The lifting assembly includes two Z-direction screw rods and two Z-direction guide rods, which are respectively arranged near the two ends of the first side edge / the second side edge, and the first driving assembly is arranged in the middle position of the two Z-direction screw rods.

3. The 3D printer according to claim 2, characterized in that: The first lifting device / second lifting device also includes a first transmission assembly, which includes a first driving wheel, a first driven wheel and a transmission belt. The first driving wheel is fixed to the output end of the first driving assembly. There are two first driven wheels, which are fixed one-to-one to the two Z-direction screw rods. The transmission belt cooperates with the first driving wheel and the first driven wheel to transmit the steering power output by the first driving assembly to the first driving wheel to the two first driven wheels.

4. The 3D printer according to claim 3, characterized in that: The first transmission assembly also includes two tensioning wheels respectively matched with the transmission belt, and the two tensioning wheels are symmetrically arranged with respect to the first driving wheel.

5. The 3D printer according to claim 1, wherein: The frame device includes a frame assembly and a connecting assembly fixed to the frame assembly, the connecting assembly is arranged in a one-to-one correspondence with the first lifting device / the second lifting device, the first driving assembly and the Z-direction guide rod are fixed to the corresponding connecting assembly, and the Z-direction screw rod is rotatably connected to the corresponding connecting assembly.

6. The 3D printer according to claim 5, characterized in that: The connecting component is detachably connected to the frame component, and the position of the connecting component in the Z direction is adjustable.

7. The 3D printer according to claim 1, wherein: The printing platform device includes a base component and a matching component fixed to the base component, and the matching component is correspondingly connected to the lifting component.

8. The 3D printer according to claim 7, characterized in that: The printing platform device also includes a conveyor belt, and an active rod and a driven rod rotatably connected to the base assembly, the active rod and the driven rod are connected through the conveyor belt transmission, and the conveyor belt is used to transmit the 3D printing model along the Y direction.

9. The 3D printer according to claim 1, wherein: The 3D printer further comprises a translation device connected to the frame device, wherein the translation device is mounted above the printing platform device and is used for moving the nozzle device along the X direction.

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