CN113977949B - 3D printer and control method thereof - Google Patents
3D printer and control method thereof Download PDFInfo
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- CN113977949B CN113977949B CN202111281662.7A CN202111281662A CN113977949B CN 113977949 B CN113977949 B CN 113977949B CN 202111281662 A CN202111281662 A CN 202111281662A CN 113977949 B CN113977949 B CN 113977949B
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000007639 printing Methods 0.000 claims abstract description 127
- 230000003287 optical effect Effects 0.000 claims description 17
- 238000000016 photochemical curing Methods 0.000 description 6
- 239000011521 glass Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000010146 3D printing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/386—Data acquisition or data processing for additive manufacturing
- B29C64/393—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
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- Mechanical Engineering (AREA)
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Abstract
The application provides a 3D printer and a control method thereof, wherein the 3D printer comprises a printing platform, a projection device, an adjusting device and a control device, wherein the projection device and the adjusting device are respectively and electrically connected with the control device, the control device controls the projection device to emit light rays and form an initial picture on the printing platform, the adjusting device is arranged on a light path of the light rays emitted by the projection device, and the control device controls the adjusting device to adjust the size of the initial picture. According to the 3D printer and the control method thereof, the 3D printer can adjust the size of the picture formed on the printing platform, so that the 3D printer can change the size of a printed product according to the requirement of a user, the application range of the printer is enlarged, and the application experience is improved.
Description
Technical Field
The application belongs to the technical field of 3D printing, and particularly relates to a 3D printer and a control method thereof.
Background
The DLP photo-curing 3D printer prints according to the picture projected by the projection device on the printing platform, and the shape and the size of the picture determine the shape and the size of the printed product. But the printing size of the existing DLP photo-curing 3D printer is fixedly set when leaving the factory, and a user cannot change the printing size when using the DLP photo-curing 3D printer. For example, the resolution ratio of a DLP photo-curing 3D printer is 1080P, when leaving the factory, the printing precision is fixed to 75um, the corresponding printing size is fixed to 144 x 81mm, the variable printing size cannot be realized, products with different sizes cannot be printed, and the application range of the printer is severely limited.
Disclosure of Invention
Therefore, the technical problem to be solved by the application is to provide a 3D printer and a control method thereof, wherein the 3D printer can adjust the size of a picture formed on a printing platform, so as to change the size of a printed product and enlarge the application range of the printer.
In order to solve the above problems, the present application provides a 3D printer, which includes a printing platform, a projection device, an adjusting device and a control device, wherein the projection device and the adjusting device are respectively electrically connected with the control device, the control device controls the projection device to emit light and form an initial picture on the printing platform, the adjusting device is arranged on a light path of the light emitted by the projection device, and the control device controls the adjusting device to adjust the size of the initial picture.
Optionally, the 3D printer further includes an input device, where the input device is electrically connected to the control device, the input device is configured to allow a user to input a target parameter, and the control device controls the adjustment device to adjust the size of the initial screen based on the target parameter, where the target parameter includes printing precision and/or a target size.
Optionally, the 3D printer further includes an image acquiring device, where the image acquiring device is set towards the printing platform to acquire a real-time image formed on the printing platform when the adjusting device adjusts the initial image, and the image acquiring device is electrically connected with the control device to send the acquired real-time image to the control device.
Optionally, the control device obtains a size of the real-time picture, compares the size of the real-time picture with a target size, and controls the adjusting device to adjust the size of the real-time picture based on a comparison result, wherein the target size is one of the target parameter, a parameter calculated by the target parameter and a pre-stored parameter.
Optionally, when the size of the real-time screen is larger than the target size, the control device controls the adjustment device to reduce the size of the real-time screen so that the real-time screen size reaches the target size;
When the size of the real-time picture is smaller than the target size, the control device controls the adjusting device to enlarge the size of the real-time picture so that the real-time picture size reaches the target size.
Optionally, the print platform is provided with a scale, the image acquiring device acquires the image of the print platform, the real-time picture and the image of the scale are located in the image of the print platform, and the control device analyzes the image of the print platform to acquire the size of the real-time picture.
Optionally, the projection device is an optical engine, the adjusting device comprises a zoom lens and a driving motor, the zoom lens comprises a lens, the zoom lens is arranged at an output end of the optical engine, so that light emitted by the optical engine irradiates onto the printing platform through the lens, the lens is connected with the driving motor, and the control device is electrically connected with the driving motor so as to control the driving motor to drive the lens to move in a light emitting direction of the optical engine so as to adjust the focal length of the zoom lens.
In another aspect of the present application, there is provided a control method of a 3D printer, the 3D printer including a printing platform, a projection device, an adjustment device, and a control device, the control method including:
Controlling the projection device to emit light and forming an initial image on the printing platform; and controlling the adjusting device to adjust the size of the initial image.
Optionally, the 3D printer further includes an input device, and the control method further includes:
And receiving target parameters sent by the input device, and adjusting the initial image according to the target parameters, wherein the target parameters comprise printing precision and/or target size.
Optionally, the 3D printer further includes an image acquisition device, and the control method further includes:
controlling an image acquisition device to acquire a platform image in real time so as to obtain a real-time image;
Calculating the size of the real-time image and comparing the size with a target size;
If the size of the real-time image is larger than the target size, controlling the adjusting device to reduce the real-time image until the size of the real-time image reaches the target size; and if the size of the real-time image is smaller than the target size, controlling the adjusting device to amplify the real-time image until the size of the real-time image reaches the target size.
Advantageous effects
According to the 3D printer and the control method thereof provided by the embodiment of the invention, the 3D printer can adjust the size of the picture formed on the printing platform, so that the 3D printer can change the size of a printed product according to the requirement of a user, the application range of the printer is enlarged, and the application experience is improved.
Drawings
Fig. 1 is a schematic perspective view of a 3D printer according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a printing platform according to an embodiment of the present application.
The reference numerals are expressed as:
1. a printing platform; 2. a projection device; 3. an adjusting device; 4. an image acquisition device; 5. a ruler; 6. a real-time picture; 7. a magazine; 8. a reflecting mirror.
Detailed Description
Referring to fig. 1 to 2, a 3D printer includes a printing platform 1, a projection device 2, an adjusting device 3, and a control device, where the projection device 2 and the adjusting device 3 are electrically connected with the control device, respectively, the control device controls the projection device 2 to emit light and form an initial screen on the printing platform 1, the adjusting device 3 is disposed on the light path of the light emitted by the projection device 2, and the control device controls the adjusting device 3 to adjust the size of the initial screen. Through setting up adjusting device 3, can adjust the light that projection arrangement 2 sent, and then the size of the initial picture that forms on the adjustment print platform 1, make the 3D printer can change the size of the product of printing out, can print out the product of suitable size according to the user's demand, and then enlarge the application range of printer. For example, the higher the printing accuracy, the smaller the product size, the lower the printing accuracy, the larger the product size, and the size of the product size can be adjusted by setting different printing accuracies at the same resolution.
Further, print accuracy refers to the number of dots that a printer can print per inch.
Further, the projection device 2 emits light, and the light can be reflected by the reflecting mirror 8 and then transmitted to the printing platform 1, and forms a picture on the printing platform 1.
Further, the adjusting device 3 is disposed on the optical path between the projecting device 2 and the reflecting mirror 8, and the reflecting mirror 8 is used for reflecting the light onto the printing platform 1.
Further, print platform 1 can be transparent glass and makes, and print platform 1's top is provided with magazine 7, has stored the printing consumable in the magazine 7, through the irradiation of the light that projection arrangement 2 sent and the upward movement of shaping platform in the magazine 7, realizes DLP photocuring 3D printing.
It will be appreciated that the size of the screen formed on the printing platform 1 may also be adjusted by manual operation of the adjustment device 3. For example, the adjusting device 3 is a zoom lens, and the zoom lens is disposed on an output end of the projection device, and the size of the initial screen is adjusted by manually adjusting the focal length of the zoom lens.
In this embodiment, by providing the control device and electrically connecting the control device with the projection device 2, the control device controls the projection device 2 to emit light and form an initial screen on the printing platform 1, and the control device is electrically connected with the adjustment device 3, so as to control the adjustment device 3 to adjust the size of the initial screen, thereby realizing automatic adjustment, avoiding increasing the amount of manual labor, and having higher adjustment precision.
Further, the control device can be integrally arranged on the control system of the 3D printer, or can be independently arranged as one control device.
The 3D printer further comprises an input device electrically connected to the control device, the input device is used for inputting target parameters by a user, the control device controls the adjustment device 3 to adjust the size of the initial screen based on the target parameters, and the target parameters comprise printing precision and/or target size. Through setting up input device, can make the required target parameter of user input, and then make 3D printer print according to user's demand, enlarged application range.
Further, the input device may be a touch screen, a keyboard, or the like, and may be capable of inputting parameters to the control device.
As one embodiment, the target parameter is printing accuracy. The target size may be calculated from the print accuracy and print resolution. The printing resolution includes horizontal pixels and vertical pixels, which are multiplied by the printing accuracy, respectively, so that the target size can be calculated. In the present embodiment, the printing resolution is a fixed value, and the adjustment device 3 is configured to change the printing accuracy and further adjust the size of the target size.
Specifically, taking 1080P (1920×1080) as an example of the printing resolution, the printing precision is manually input or the fixed printing precision entered in advance is selected on the input device, the fixed printing precision entered in advance may be 20um, 30um, 40um, 50um, 60um, 70um, 80um, 90um, 100um, and the like, and the manual input may be any suitable precision. The precision is s, and the corresponding target size is calculated: x-direction xw=1920×s, and y-direction yw=1080×s. For example, if the precision is s=20um, xw=1920×0.02=38. mmYw =1080×0.02=21.6 mm, and the target size is 38.4×21.6mm.
As another embodiment, the target parameter is a target size. That is, the user can directly input the target size, and print directly through the input target size.
As yet another embodiment, the target parameters are print accuracy and target size. The user can input the printing precision and the target size at the same time, calculate the target size through the printing precision and the printing resolution, and recheck through the input target size, so that the size error of the printed product is avoided.
Furthermore, a plurality of target sizes can be prestored in the control device for operators to select, and the operators can print only by clicking to select the prestored target sizes. For example, the pre-stored option with 1080P resolution (1920×1080) and 20um precision can be clicked, and printing can be directly performed. .
The 3D printer further includes an image acquisition device 4, the image acquisition device 4 being disposed toward the printing platform 1 to acquire a real-time screen 6 formed on the printing platform 1 when the adjustment device 3 adjusts the initial screen, the image acquisition device 4 being electrically connected with the control device to transmit the acquired real-time screen 6 to the control device. The image acquisition device 4 is arranged to acquire the real-time picture 6, so that the automatic real-time adjustment of the initial picture is realized, the adjustment process can be monitored in real time, and the good adjustment precision can be further ensured.
Further, when the 3D printer includes the image capturing device 4, but does not include the input device, the screen can be adjusted in real time by the image capturing device 4. When the 3D printer includes the image acquisition device 4 and the input device, the screen can be adjusted in real time according to the target parameter received by the input device and the real-time screen 6 acquired by the image acquisition device 4.
Further, in this embodiment, the image obtaining device 4 is a camera, the camera is set towards the printing platform 1, and then photographs and records pictures on the platform, and sends the obtained real-time pictures 6 to the control device, so that the control device can accurately receive the real-time condition of the adjustment device 3 for picture adjustment, and further accurate adjustment is achieved.
Further, the image acquisition device 4 can acquire the initial screen, the screen during the initial screen adjustment, and the screen at the completion of the adjustment, from the initial screen at the time of the adjustment by the adjustment device 3 to the screen at the time of the completion of the adjustment, which is the real-time screen 6.
The control device obtains the size of the real-time picture 6, compares the size of the real-time picture 6 with a target size, and controls the adjusting device 3 to adjust the size of the real-time picture 6 based on the comparison result, wherein the target size is one of a target parameter, a parameter calculated by the target parameter and a pre-stored parameter. By comparing the size of the real-time screen 6 with the target size, the size of the real-time screen 6 can be adjusted to the target size, and further the screen size can be adjusted according to the setting of the user, thereby realizing the change of the size of the printed product and expanding the application range of the printer.
As one embodiment, the target parameter is a target size through input.
As still another embodiment, the target size is a parameter calculated from a target parameter, that is, a target size calculated from the input printing accuracy.
As a further embodiment, the target size is a pre-stored parameter, i.e. the target size may be a target size pre-stored in the control device. The target size may also be calculated based on pre-stored print accuracy.
Specifically, when the size of the real-time frame 6 is larger than the target size, the control device controls the adjusting device 3 to reduce the size of the real-time frame 6 so that the size of the real-time frame 6 reaches the target size; when the size of the real-time screen 6 is smaller than the target size, the control device controls the adjustment device 3 to enlarge the size of the real-time screen 6 so that the real-time screen 6 size reaches the target size.
The scale 5 is arranged on the printing platform 1, the image acquisition device 4 can acquire the image of the printing platform 1, the real-time picture 6 and the image of the scale are positioned in the image of the printing platform 1, and the control device analyzes the image of the printing platform 1 to acquire the size of the real-time picture. Through setting up scale 5 to make image acquisition device 4 can acquire the image that includes real-time picture 6 and scale simultaneously, real-time picture 6 and scale lie in the image simultaneously promptly, after resolving the image, can measure the size of real-time picture through the scale on the image, and then can acquire the size of real-time picture 6 more accurately.
Further, the printing platform 1 is rectangular, and the scale 5 is arranged in the length and width directions of the printing platform 1.
Further, a scale 5 is provided along the edge of the printing platform 1.
Specifically, the printing platform 1 includes glass and a glass support plate, and the scale 5 is printed on the glass support plate of the printing platform 1.
Further, the image analysis is to perform digital processing on the picture, so that the computer can compare the real-time picture on the image with the picture of the scale, and the size of the real-time picture is measured through the picture of the scale.
The projection device 2 is an optical machine, the adjusting device 3 comprises a zoom lens and a driving motor, the zoom lens comprises a lens, the zoom lens is arranged at the output end of the optical machine, so that light emitted by the optical machine irradiates onto the printing platform through the lens, the lens is connected with the driving motor, and the control device is electrically connected with the driving motor to control the driving motor to drive the lens to move in the light emitting direction of the optical machine so as to adjust the focal length of the zoom lens. The size of an initial picture formed by the irradiation of the optical machine on the printing platform 1 can be changed by setting the zoom lens, the driving motor is arranged and electrically connected with the control device, the lens can be driven to focus by directly controlling the driving motor through the control device, automatic focusing is realized, and the initial picture is conveniently, fast and accurately adjusted.
Further, the adjusting device 3 can be understood as an electric zoom lens, and the control device controls the electric zoom lens to change the focal length, thereby changing the printing precision, so as to realize the adjustment of the size of the real-time picture 6.
Further, the driving motor is connected with a zoom ring of the zoom lens, and zooming is achieved by driving the zoom ring to rotate.
Further, when the size of the real-time screen 6 is larger than the target size, the control device controls the electric zoom lens to change the focal length so that the real-time screen 6 becomes smaller to the same target size. When the size of the real-time screen 6 is smaller than the target size, the control device controls the power zoom lens to change the focal length so that the real-time screen 6 becomes larger to be the same size as the target size.
In this embodiment, the 3D printer is a DLP photo-curing 3D printer.
In another aspect of the present application, there is provided a control method of a 3D printer, the 3D printer including a printing platform 1, a projection device 2, an adjustment device 3, and a control device, the control method including:
S2: controlling the projection device 2 to emit light and form an initial image on the printing platform 1;
s3: the control adjustment device 3 adjusts the size of the initial image.
The initial image is a default image when the 3D printer receives an image to be printed before printing, and the size of the initial image is adjusted when the size of the initial image is different from the target size.
The light is emitted by the optical machine, and forms an initial image to be printed on the printing platform 1.
Through the control method, the size of the image formed on the printing platform 1 can be adjusted, so that the 3D printer can change the size of the printed product, and the printing of products with different sizes can be realized, thereby expanding the application range of the printer. For example, the higher the printing accuracy, the smaller the product size, the lower the printing accuracy, the larger the product size, and the size of the product size can be adjusted by setting different printing accuracies at the same resolution.
The 3D printer further includes an input device, and the control method further includes:
s1: and receiving target parameters sent by the input device, and adjusting the initial image according to the target parameters, wherein the target parameters comprise printing precision and/or target size.
It will be appreciated that the input of the target parameter to the control device may be achieved by means of a touch screen or a keyboard or the like.
As one embodiment, the target parameter is printing accuracy. The target size may be calculated from the print accuracy and print resolution. The printing resolution includes horizontal pixels and vertical pixels, which are multiplied by the printing accuracy, respectively, so that the target size can be calculated. In the present embodiment, the printing resolution is a fixed value, and the adjustment device 3 is configured to change the printing accuracy and further adjust the size of the target size.
Specifically, taking 1080P (1920×1080) resolution as an example, the printing precision is manually input or the fixed printing precision entered in advance is selected on the input device, and the fixed printing precision entered in advance may be 20um, 30um, 40um, 50um, 60um, 70um, 80um, 90um, 100um, or the like, and any appropriate precision may be manually input. The precision is s, and the corresponding target size is calculated: x-direction xw=1920×s, and y-direction yw=1080×s. For example, if the precision is s=20um, xw=1920×0.02=38. mmYw =1080×0.02=21.6 mm, and the target size is 38.4×21.6mm.
As another embodiment, the target parameter is a target size. That is, the user can directly input the target size, and print directly through the input target size.
As yet another embodiment, the target parameters are print accuracy and target size. The user can input the printing precision and the target size at the same time, calculate the target size through the printing precision and the printing resolution, and recheck through the input target size, so that the size error of the printed product is avoided.
Furthermore, a plurality of target sizes can be prestored in the control device for operators to select, and the operators can print only by clicking to select the prestored target sizes. For example, the pre-stored option with 1080P resolution (1920×1080) and 20um precision can be clicked, and printing can be directly performed.
The 3D printer further includes an image acquisition device 4, and the control method further includes:
s31: controlling the image acquisition device 4 to acquire a platform image in real time so as to obtain a real-time image;
S32: calculating the size of the real-time image and comparing the size with the target size;
s33: if the size of the real-time image is larger than the target size, controlling the adjusting device 3 to reduce the real-time image until the size of the real-time image reaches the target size; if the size of the real-time image is smaller than the target size, the adjusting device 3 is controlled to enlarge the real-time image until the size of the real-time image reaches the target size.
Further, the target size is one of a target parameter, a parameter calculated from the target parameter, and a pre-stored parameter.
As one embodiment, the target size is a target size received by the input device.
As yet another embodiment, the target size is a parameter calculated from a target parameter, that is, a target size calculated from the printing accuracy received by the input device.
As a further embodiment, the target size is a pre-stored parameter, i.e. the target size may be a target size pre-stored in the control device. The target size may also be calculated based on pre-stored print accuracy.
When the size of the real-time image 6 is adjusted to the target size, the control device controls the adjusting device 3 to stop running, and the adjustment is completed.
The image acquisition device 4 is a camera, the camera is arranged towards the printing platform 1, images on the platform are photographed and recorded, the real-time images 6 are acquired in real time, and the acquired real-time images 6 are sent to the control device, so that the control device can accurately receive the real-time condition of the image adjustment by the adjustment device 3, namely, the real-time dimensions of the real-time images 6 are determined by comparing the real-time images 6 with the scale, and further accurate adjustment is realized.
The image from the initial image when the adjustment device 3 starts the adjustment to the image when the adjustment ends is the real-time image 6, that is, the image acquisition device 4 can acquire the initial image and the image in the process of adjusting the initial image and the image when the adjustment is completed.
The size of the real-time image 6 can be acquired by setting a scale in cooperation with the image acquisition device 4. Specifically, the scale 5 is disposed on the printing platform 1, the image acquisition device 4 acquires the image of the printing platform 1, the real-time image 6 and the image of the scale are located in the image of the printing platform 1, and the control device analyzes the image of the printing platform 1, and compares the real-time image 6 with the image of the scale. The control device can simultaneously acquire the image comprising the real-time image 6 and the scale by setting the scale 5 according to the measured real-time image 6 size of the scale 5, namely, the real-time image 6 and the scale are simultaneously positioned in the image, after the image is analyzed, the computer can compare the real-time picture on the image with the picture of the scale, the size of the real-time picture is measured through the picture of the scale, and then the size of the real-time image 6 can be acquired more accurately.
Examples
Fig. 1 is a schematic perspective view of a 3D printer according to the present embodiment, and fig. 2 is a schematic structural view of a printing platform according to the present embodiment. As shown in fig. 1 and 2, the present embodiment provides a 3D printer, which includes a printing platform 1, a projection device 2, an adjusting device 3 and a control device, wherein the projection device 2 and the adjusting device 3 are respectively electrically connected with the control device, the control device controls the projection device 2 to emit light and form an initial picture on the printing platform 1, the adjusting device 3 is arranged on a light path of the light emitted by the projection device 2, and the control device controls the adjusting device 3 to adjust the size of the initial picture.
The 3D printer further includes an input device electrically connected to the control device, the input device is used for inputting target parameters by a user, and the control device controls the adjustment device 3 to adjust the initial frame based on the target parameters, wherein the target parameters include printing accuracy and/or target size.
The 3D printer further includes an image acquiring device 4, where the image acquiring device 4 is set towards the printing platform 1 to acquire a real-time image 6 formed on the printing platform 1 when the adjusting device 3 adjusts the initial image, and the image acquiring device 4 is electrically connected with the control device to send the acquired real-time image 6 to the control device.
The control device obtains the size of the real-time picture 6, compares the size of the real-time picture 6 with a target size, and controls the adjusting device 3 to adjust the size of the real-time picture 6 based on a comparison result, wherein the target size is one of a target parameter, a parameter calculated by the target parameter and a pre-stored parameter.
When the size of the real-time picture 6 is larger than the target size, the control device controls the adjusting device 3 to reduce the size of the real-time picture 6 so that the size of the real-time picture 6 reaches the target size;
When the size of the real-time screen 6 is smaller than the target size, the control device controls the adjustment device 3 to enlarge the size of the real-time screen 6 so that the real-time screen 6 size reaches the target size.
The scale 5 is arranged on the printing platform 1, the image acquisition device 4 acquires the image of the printing platform 1, the real-time picture 6 and the image of the scale are positioned in the image of the printing platform 1, and the control device analyzes the image of the printing platform 1 to acquire the size of the real-time picture.
The projection device 2 is an optical machine, the adjusting device 3 comprises a zoom lens and a driving motor, the zoom lens comprises a lens, the zoom lens is arranged at the output end of the optical machine, so that light emitted by the optical machine irradiates onto the printing platform through the lens, the lens is connected with the driving motor, and the control device is electrically connected with the driving motor to control the driving motor to drive the lens to move in the light emitting direction of the optical machine so as to adjust the focal length of the zoom lens.
In another aspect of the present embodiment, there is provided a control method of a 3D printer, the 3D printer including a printing platform 1, a projection device 2, an adjustment device 3, an image acquisition device 4, and a control device, the control method including:
s1: and receiving target parameters sent by the input device, and adjusting the initial image according to the target parameters, wherein the target parameters comprise printing precision and/or target size.
S2: controlling the projection device 2 to emit light and form an initial image on the printing platform 1;
s3: the control adjustment device 3 adjusts the size of the initial image.
S31: controlling the image acquisition device 4 to acquire a platform image in real time so as to obtain a real-time image;
S32: calculating the size of the real-time image and comparing the size with the target size;
s33: if the size of the real-time image is larger than the target size, controlling the adjusting device 3 to reduce the real-time image until the size of the real-time image reaches the target size; if the size of the real-time image is smaller than the target size, the adjusting device 3 is controlled to enlarge the real-time image until the size of the real-time image reaches the target size.
The 3D printer provided by the embodiment of the invention can adjust the size of an initial picture formed on the printing platform 1, so as to change the size of a printed product, and has obvious advantages particularly for high-precision small-size printed parts. The printing precision of the existing printer is 50um, and the 3D printer in the embodiment can provide 20-100um printing precision, so that the application range of the printer is greatly increased, and the application experience is improved.
It will be readily appreciated by those skilled in the art that the above advantageous ways can be freely combined and superimposed without conflict.
The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application. The foregoing is merely a preferred embodiment of the present application, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present application, and these modifications and variations should also be regarded as the scope of the application.
Claims (7)
1. A 3D printer comprising a printing platform (1), a reflecting mirror (8), a projecting device (2), an adjusting device (3), a control device, an image acquisition device (4) and an input device, wherein the projecting device (2) emits light and propagates to the printing platform (1) after being reflected by the reflecting mirror (8), a picture is formed on the printing platform (1), the adjusting device (3) is arranged on an optical path between the projecting device (2) and the reflecting mirror (8), the projecting device (2) and the adjusting device (3) are respectively and electrically connected with the control device, the control device controls the projecting device (2) to emit light and form an initial picture on the printing platform (1), the image acquisition device (4) is arranged towards the printing platform (1) to acquire a real-time picture (6) formed on the printing platform (1) when the initial picture is adjusted by the adjusting device (3), the image acquisition device (4) is electrically connected with the control device to transmit the acquired picture to the control device (6) to a pre-store the size of the picture in the control device (6) for controlling the size of the image acquisition device (3) to be set in advance, the input device is used for obtaining a target size selected by clicking of a user, the control device compares the size of the real-time picture (6) with the target size, and based on a comparison result, the control device controls the adjusting device (3) to adjust the size of the real-time picture (6) to the target size, wherein the target size is the target size selected by clicking of the user.
2. 3D printer according to claim 1, further comprising input means electrically connected to the control means for a user to input target parameters, the control means controlling the adjustment means (3) to adjust the size of the initial screen based on the target parameters, the target parameters comprising printing accuracy and/or target size.
3. 3D printer according to claim 1, characterized in that when the size of the real-time screen (6) is larger than the target size, the control means controls the adjustment means (3) to reduce the size of the real-time screen (6) so that the real-time screen (6) size reaches the target size;
When the size of the real-time screen (6) is smaller than the target size, the control device controls the adjustment device (3) to enlarge the size of the real-time screen (6) so that the real-time screen (6) size reaches the target size.
4. 3D printer according to claim 1, characterized in that the printing platform (1) is provided with a scale (5), the image acquisition device (4) acquires the image of the printing platform (1), the real-time picture (6) and the image of the scale are in the image of the printing platform (1), and the control device parses the image of the printing platform (1) to acquire the size of the real-time picture.
5. The 3D printer according to claim 1, wherein the projection device (2) is a light machine, the adjustment device (3) comprises a zoom lens and a driving motor, the zoom lens comprises a lens, the zoom lens is arranged at an output end of the light machine so that light emitted by the light machine irradiates the printing platform through the lens, the lens is connected with the driving motor, and the control device is electrically connected with the driving motor so as to control the driving motor to drive the lens to move in a light emitting direction of the light machine so as to adjust a focal length of the zoom lens.
6. A control method of a 3D printer, wherein the 3D printer includes a printing platform (1), a projection device (2), an adjusting device (3), a control device, an image acquisition device (4) and an input device, the projection device (2) emits light and propagates onto the printing platform (1) after being reflected by a reflecting mirror (8), and forms a picture on the printing platform (1), the adjusting device (3) is disposed on an optical path between the projection device (2) and the reflecting mirror (8), the control method includes:
controlling the projection device (2) to emit light and form an initial image on the printing platform (1);
controlling an image acquisition device (4) to acquire a platform image in real time so as to obtain a real-time image;
Calculating the size of the real-time image and comparing the size with a target size;
If the size of the real-time image is larger than the target size, controlling the adjusting device (3) to shrink the real-time image until the size of the real-time image reaches the target size; if the size of the real-time image is smaller than the target size, controlling the adjusting device (3) to amplify the real-time image until the size of the real-time image reaches the target size;
The control device can be pre-stored with a plurality of target sizes for operators to select, and the operators click to select the pre-stored target sizes for printing, wherein the target sizes are the target sizes selected by the operators.
7. The control method according to claim 6, wherein the 3D printer further includes an input device, the control method further comprising:
And receiving target parameters sent by the input device, and adjusting the initial image according to the target parameters, wherein the target parameters comprise printing precision and/or target size.
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