CN113977949A - 3D printer and control method thereof - Google Patents
3D printer and control method thereof Download PDFInfo
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- CN113977949A CN113977949A CN202111281662.7A CN202111281662A CN113977949A CN 113977949 A CN113977949 A CN 113977949A CN 202111281662 A CN202111281662 A CN 202111281662A CN 113977949 A CN113977949 A CN 113977949A
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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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Abstract
The application provides a 3D printer and control method thereof, wherein, the 3D printer includes print platform, projection arrangement, adjusting device and controlling means, projection arrangement with adjusting device respectively with the controlling means electricity is connected, controlling means control projection arrangement sends light and is in form initial picture on the print platform, adjusting device sets up projection arrangement sends the light path of light, controlling means control adjusting device adjusts the size of initial picture. The application provides a pair of 3D printer and control method thereof, wherein, the 3D printer can adjust the size of the picture that forms on print platform, makes the 3D printer can change the size of the product of printing out according to user's demand, and then enlarges the application range of printer, improves and uses experience.
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 photocuring 3D printer prints according to pictures projected by the projection device on the printing platform, and the shape and the size of the pictures determine the shape and the size of a printed product. However, the printing size of the existing DLP photocuring 3D printer is fixedly set when the printer leaves a factory, and a user cannot change the printing size when the printer is used. For example, the resolution of a DLP photocuring 3D printer is 1080P, and the printing precision is fixed to 75um when the DLP photocuring 3D printer is shipped out, so that the corresponding printing size is fixedly set to 144 × 81mm, and a variable printing size cannot be realized, and products with different sizes cannot be printed, thereby severely limiting the application range of the printer.
Disclosure of Invention
Therefore, an object of the present invention is to provide a 3D printer and a control method thereof, wherein the 3D printer is capable of adjusting the size of a screen formed on a printing platform, and further changing the size of a printed product to expand the application range of the printer.
In order to solve the above problem, the application provides a 3D printer, including print platform, projection arrangement, adjusting device and controlling means, projection arrangement with adjusting device respectively with the controlling means electricity is connected, controlling means control projection arrangement sends light and is in form initial picture on the print platform, adjusting device sets up projection arrangement sends the light path of light, controlling means control adjusting device adjusts the size of initial picture.
Optionally, the 3D printer further includes an input device, the input device is electrically connected to the control device, the input device is configured to allow a user to input a target parameter, the control device controls the adjusting device to adjust the size of the initial screen based on the target parameter, and the target parameter includes a printing precision and/or a target size.
Optionally, the 3D printer further includes an image obtaining device, the image obtaining device is disposed toward the printing platform to obtain a real-time image formed on the printing platform when the adjusting device adjusts the initial image, and the image obtaining device is electrically connected to the control device to send the obtained real-time image to the control device.
Optionally, the control device obtains a size of the real-time frame, the control device compares the size of the real-time frame with a target size, and based on a comparison result, the control device controls the adjusting device to adjust the size of the real-time frame, where the target size is one of the target parameter, a parameter calculated from the target parameter, and a pre-stored parameter.
Optionally, when the size of the real-time frame is larger than the target size, the control device controls the adjusting device to reduce the size of the real-time frame so that the size of the real-time frame reaches the target size;
and 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 as to enable the size of the real-time picture to reach the target size.
Optionally, a scale is disposed on the printing platform, the image obtaining device obtains an image of the printing platform, the real-time image and the image of the scale are in the image of the printing platform, and the control device analyzes the image of the printing platform to obtain a size of the real-time image.
Optionally, the projection apparatus is an optical machine, the adjusting apparatus includes a zoom lens and a driving motor, the zoom lens includes a lens, the zoom lens is disposed on an output end of the optical machine, so that light emitted by the optical machine is irradiated onto the printing platform through the lens, the lens is connected to the driving motor, the control apparatus is electrically connected to the driving motor, so as to control the driving motor to drive the lens to move in a light emitting direction of the optical machine, so as to adjust a focal length of the zoom lens.
In another aspect of the present application, a control method of a 3D printer is provided, where the 3D printer includes a printing platform, a projection device, an adjustment device, and a control device, and the control method includes:
controlling the projection device to emit light and form 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:
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 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 the printed product according to the requirement of a user, the use range of the printer is further expanded, and the use 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 represented as:
1. a printing platform; 2. a projection device; 3. an adjustment device; 4. an image acquisition device; 5. a scale; 6. real-time pictures; 7. a magazine; 8. a mirror.
Detailed Description
Referring to fig. 1 to 2 in combination, a 3D printer includes a printing platform 1, a projection device 2, an adjustment device 3, and a control device, where the projection device 2 and the adjustment device 3 are electrically connected to the control device, the control device controls the projection device 2 to emit light and form an initial image on the printing platform 1, the adjustment device 3 is disposed on a light path of the light emitted by the projection device 2, and the control device controls the adjustment device 3 to adjust a size of the initial image. 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 makes 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 enlarges the application range of printer. For example, the higher the printing accuracy is, the smaller the product size is, and the lower the printing accuracy is, the larger the product size is, and the size of the product size can be adjusted by setting different printing accuracies, for the same resolution.
Further, the printing accuracy refers to the number of dots per inch that the printer can print.
Further, the projection device 2 emits light, and the light can be reflected by the reflector 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 light path between the projecting device 2 and the reflecting mirror 8, and the reflecting mirror 8 is used for reflecting the light to the printing platform 1.
Further, print platform 1 can be made for transparent glass, and print platform 1's top is provided with magazine 7, has stored the printing consumables in the magazine 7, and the light that sends through projection arrangement 2 shines and the upward movement of forming platform in the magazine 7, realizes DLP photocuring 3D and prints.
It will be appreciated that the size of the screen formed on the printing platform 1 may also be adjusted by manually operating the adjustment device 3. For example, the adjusting device 3 is a zoom lens, the zoom lens is disposed on the output end of the projection device, and the size of the initial picture is adjusted by manually adjusting the focal length of the zoom lens.
In this embodiment, by setting the control device and electrically connecting the control device to the projection device 2, the control device controls the projection device 2 to emit light and form an initial picture on the printing platform 1, the control device is electrically connected to the adjusting device 3, and then controls the adjusting device 3 to adjust the size of the initial picture, so that automatic adjustment can be realized, the increase of labor intensity can be avoided, and the adjustment precision is higher.
Further, the control device can be integrally arranged on a control system of the 3D printer, and can also be independently arranged as a control device.
The 3D printer further comprises an input device, the input device is electrically connected with the control device, the input device is used for a user to input target parameters, the control device controls the adjusting device 3 to adjust the size of the initial picture 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 or a keyboard, and may be capable of inputting parameters to the control device.
As an embodiment, the target parameter is printing accuracy. The target size can be calculated from the printing precision and the printing resolution. The printing resolution comprises horizontal pixels and vertical pixels, and the horizontal pixels and the vertical pixels are multiplied by the printing precision respectively to calculate the target size. In the present embodiment, the printing resolution is a fixed value, and the adjustment device 3 is used to change the printing accuracy and further adjust the size of the target dimension.
Specifically, the printing resolution is 1080P (1920 × 1080) as an example, the printing precision is manually input on the input device or a pre-entered fixed printing precision is selected, the pre-entered fixed printing precision may be 20um, 30um, 40um, 50um, 60um, 70um, 80um, 90um, 100um, and the like, and any suitable precision may be input by manual input. The accuracy is s, and the corresponding target size is calculated as follows: the X direction Xw is 1920 × s, and the Y direction Yw is 1080 × s. For example, if s is 20um, Xw is 1920 x 0.02 x 38.4mmYw 1080 x 0.02 x 21.6mm, resulting in a target size of 38.4 x 21.6 mm.
As another embodiment, the target parameter is a target size. That is, the user can also directly input the target size and directly print through the input target size.
In yet another embodiment, the target parameters are printing accuracy and target size. The user can input the printing precision and the target size at the same time, the target size is obtained by calculating the printing precision and the printing resolution, and the input target size is rechecked, 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 an operator to select, and the operator can print by clicking the prestored target sizes. For example, the pre-stored option with a resolution of 1080P (1920 × 1080) and a precision of 20um can be clicked to directly print. .
The 3D printer further comprises an image acquisition device 4, 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 adjustment device 3, and the image acquisition device 4 is electrically connected with the control device to send the acquired real-time picture 6 to the control device. The real-time picture 6 is acquired by the image acquisition device 4, so that the automatic real-time adjustment of the initial picture is realized, the adjustment process can be monitored in real time, and good adjustment precision can be further ensured.
Further, when the 3D printer includes the image pickup device 4 but does not include an input device, the screen may be adjusted in real time by the image pickup device 4. When the 3D printer includes the image capturing device 4 and the input device, the picture can be adjusted in real time according to the target parameter received by the input device and the real-time picture 6 acquired by the image capturing device 4.
Further, in this embodiment, the image acquiring device 4 is a camera, and the camera is disposed toward the printing platform 1, and further takes pictures and records the pictures on the platform, and sends the acquired real-time pictures 6 to the control device, so that the control device can accurately receive the real-time condition of the picture adjustment by the adjusting device 3, and further realize accurate adjustment.
Further, the screen from the initial screen when the adjustment device 3 starts adjustment to the screen when the adjustment is completed is the real-time screen 6, that is, the image acquisition device 4 can acquire the initial screen, the screen during the adjustment of the initial screen, and the screen at the completion of the adjustment.
The control device acquires 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 from the target parameter, and a prestored 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 the screen size can be further adjusted according to the setting of a user, so that the size of a printed product can be changed, and the application range of the printer can be expanded.
As an embodiment, the target parameter is a target size by input.
In yet another embodiment, the target size is a parameter calculated from the target parameter, that is, a target size calculated according to 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 can also be calculated according to the pre-stored printing precision.
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 picture 6 is smaller than the target size, the control means controls the adjusting means 3 to enlarge the size of the real-time picture 6 so that the size of the real-time picture 6 reaches the target size.
The printing platform 1 is provided with a scale 5, the image acquisition device 4 can acquire an 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 analyzes the image of the printing platform 1 to acquire the size of the real-time picture. By arranging the scale 5 and enabling the image acquisition device 4 to acquire images including the real-time picture 6 and the scale at the same time, namely, the real-time picture 6 and the scale are positioned in the images at the same time, the size of the real-time picture can be measured through the scale on the images after the images are analyzed, and then the size of the real-time picture 6 can be acquired 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 comprises 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 on the output end of the optical machine, so that light rays emitted by the optical machine are irradiated onto the printing platform through the lens, the lens is connected with the driving motor, the control device is electrically connected with the driving motor, and the driving motor is controlled to drive the lens to move in the light emitting direction of the optical machine, so that the focal length of the zoom lens is adjusted. The size of the initial picture formed by irradiating the optical machine on the printing platform 1 can be changed by setting the zoom lens, the driving motor is arranged and is electrically connected with the control device, the driving motor can be directly controlled by the control device to drive the lens to be focused, automatic focusing is realized, and the initial picture can be conveniently and accurately adjusted.
Further, the adjusting device 3 can be understood as a motorized zoom lens, and the control device controls the motorized zoom lens to change the focal length, and thus the printing precision, so as to adjust the size of the real-time image 6.
Furthermore, the driving motor is connected with a zooming ring of the zoom lens, and zooming is realized by driving the zooming ring to rotate.
Further, when the size of the real-time picture 6 is larger than the target size, the control device controls the motorized zoom lens to change the focal length so that the size of the real-time picture 6 is reduced to the same target size. When the size of the real-time picture 6 is smaller than the target size, the control device controls the motorized zoom lens to change the focal length so that the size of the real-time picture 6 becomes the same as the target size.
In this embodiment, the 3D printer is a DLP photocuring 3D printer.
In another aspect of the present application, a control method for a 3D printer is provided, where the 3D printer includes a printing platform 1, a projection apparatus 2, an adjustment apparatus 3, and a control apparatus, and the control method includes:
s2: controlling the projection device 2 to emit light and form an initial image on the printing platform 1;
s3: the control adjustment means 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 the light emitted by the light engine, and forms an initial image to be printed on the printing platform 1.
By 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, the products with different sizes can be printed, and the application range of the printer is further enlarged. For example, the higher the printing accuracy is, the smaller the product size is, and the lower the printing accuracy is, the larger the product size is, and the size of the product size can be adjusted by setting different printing accuracies, for the same resolution.
The 3D printer further comprises an input device, and the control method further comprises the following steps:
s1: and receiving target parameters sent by an 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 means can be effected via a touch screen or a keyboard or the like.
As an embodiment, the target parameter is printing accuracy. The target size can be calculated from the printing precision and the printing resolution. The printing resolution comprises horizontal pixels and vertical pixels, and the horizontal pixels and the vertical pixels are multiplied by the printing precision respectively to calculate the target size. In the present embodiment, the printing resolution is a fixed value, and the adjustment device 3 is used to change the printing accuracy and further adjust the size of the target dimension.
Specifically, taking a resolution of 1080P (1920 × 1080) as an example, the printing accuracy is manually input on the input device or a pre-entered fixed printing accuracy is selected, the pre-entered fixed printing accuracy may be 20um, 30um, 40um, 50um, 60um, 70um, 80um, 90um, 100um, and the like, and any appropriate accuracy may be input by manual input. The accuracy is s, and the corresponding target size is calculated as follows: the X direction Xw is 1920 × s, and the Y direction Yw is 1080 × s. For example, if s is 20um, Xw is 1920 x 0.02 x 38.4mmYw 1080 x 0.02 x 21.6mm, resulting in a target size of 38.4 x 21.6 mm.
As another embodiment, the target parameter is a target size. That is, the user can also directly input the target size and directly print through the input target size.
In yet another embodiment, the target parameters are printing accuracy and target size. The user can input the printing precision and the target size at the same time, the target size is obtained by calculating the printing precision and the printing resolution, and the input target size is rechecked, 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 an operator to select, and the operator can print by clicking the prestored target sizes. For example, the pre-stored option with a resolution of 1080P (1920 × 1080) and a precision of 20um can be clicked to directly print.
The 3D printer further comprises an image acquisition device 4, and the control method further comprises:
s31: controlling the image acquisition device 4 to acquire a platform image in real time 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 prestored parameter.
In one embodiment, the target size is a target size received by the input device.
In yet another embodiment, the target size is a parameter calculated from a target parameter, i.e., a target size calculated according to 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 can also be calculated according to the pre-stored printing precision.
When the size of the real-time image 6 is adjusted to reach 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 which is arranged towards the printing platform 1, and then images on the platform are photographed and recorded, the real-time image 6 is acquired in real time, and the acquired real-time image 6 is sent to the control device, so that the control device can accurately receive the real-time situation of the image adjustment by the adjustment device 3, namely, the real-time image 6 is compared with the scale, the real-time size of the real-time image 6 is determined, and then accurate adjustment is realized.
The images from the initial image when the adjustment by the adjustment device 3 is started to the image when the adjustment is finished are all real-time images 6, that is, the image acquisition device 4 can acquire the initial image and the image during the adjustment of the initial image and the image when the adjustment is finished.
The size of the live image 6 can be obtained by setting a scale and cooperating with the image obtaining means 4. Specifically, the printing platform 1 is provided with the scale 5, the image acquisition device 4 acquires an image of the printing platform 1, the real-time image 6 and the image of the scale are 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 is used for setting the scale 5 according to the size of the real-time image 6 measured by the scale 5, enabling the image acquisition device 4 to simultaneously acquire the images comprising the real-time image 6 and the scale, namely, the real-time image 6 and the scale are simultaneously positioned in the images, analyzing the images, enabling the computer to compare the real-time picture on the images with the picture of the scale, measuring the size of the real-time picture through the picture of the scale, and further accurately acquiring the size of the real-time image 6.
Examples
Fig. 1 is a schematic perspective structure diagram of a 3D printer according to the present embodiment, and fig. 2 is a schematic structural diagram 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 adjustment device 3, and a control device, wherein the projection device 2 and the adjustment device 3 are electrically connected to the control device, respectively, the control device controls the projection device 2 to emit light and form an initial image on the printing platform 1, the adjustment device 3 is disposed on a light path of the light emitted by the projection device 2, and the control device controls the adjustment device 3 to adjust a size of the initial image.
The 3D printer further comprises an input device, the input device is electrically connected with the control device, the input device is used for a user to input target parameters, the control device controls the adjusting device 3 to adjust the initial picture based on the target parameters, and the target parameters comprise printing precision and/or target size.
The 3D printer further comprises an image acquisition device 4, 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, and the image acquisition device 4 is electrically connected with the control device to send the acquired real-time picture 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 the comparison result, wherein the target size is one of a target parameter, a parameter calculated by the target parameter, and a prestored 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 as to enable the size of the real-time picture 6 to reach the target size;
when the size of the real-time picture 6 is smaller than the target size, the control means controls the adjusting means 3 to enlarge the size of the real-time picture 6 so that the size of the real-time picture 6 reaches the target size.
The printing platform 1 is provided with a scale 5, the image acquisition device 4 acquires an 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 analyzes the image of the printing platform 1 to acquire the size of the real-time picture.
Wherein, projection arrangement 2 is the ray apparatus, and adjusting device 3 includes zoom and driving motor, and the zoom includes the lens, and the zoom sets up on the output of ray apparatus to make the light that the ray apparatus sent shine to print platform via the lens, the lens is connected with driving motor, and controlling means is connected with driving motor electricity, drives the lens in the light-emitting direction of ray apparatus and removes with the focus of adjustment zoom in order to control driving motor.
In another aspect of the present embodiment, a control method for a 3D printer is provided, where the 3D printer includes a printing platform 1, a projection apparatus 2, an adjustment apparatus 3, an image acquisition apparatus 4, and a control apparatus, and the control method includes:
s1: and receiving target parameters sent by an 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 means 3 adjusts the size of the initial image.
S31: controlling the image acquisition device 4 to acquire a platform image in real time 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 the initial picture formed on the printing platform 1, further change the size of a printed product, and has obvious advantages particularly for high-precision small-size printed products. The printing precision of current printer is at 50um, and the 3D printer in this embodiment can provide 20-100 um's printing precision, greatly increased the application range of printer, improved and used experience.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.
Claims (10)
1. The utility model provides a 3D printer, its characterized in that, including print platform (1), projection arrangement (2), adjusting device (3) and controlling means, projection arrangement (2) with adjusting device (3) respectively with the controlling means electricity is connected, controlling means control projection arrangement (2) send light and form initial picture on print platform (1), adjusting device (3) set up projection arrangement (2) send the light path of light, controlling means control adjusting device (3) adjustment the size of initial picture.
2. The 3D printer according to claim 1, characterized in that the 3D printer further comprises an input device electrically connected to the control device, the input device being used for a user to input target parameters, the control device controlling the adjusting device (3) to adjust the size of the initial screen based on the target parameters, the target parameters including printing precision and/or target dimensions.
3. The 3D printer according to claim 1 or 2, characterized in that the 3D printer further comprises an image acquisition device (4), the image acquisition device (4) being arranged towards the printing platform (1) to acquire the real-time picture (6) formed on the printing platform (1) when the adjustment device (3) adjusts the initial picture, the image acquisition device (4) being electrically connected with the control device to send the acquired real-time picture (6) to the control device.
4. The 3D printer according to claim 3, wherein the control device obtains a size of the real-time picture (6), the control device compares the size of the real-time picture (6) with a target size, and based on the comparison result, the control device controls the adjustment device (3) to adjust the size of the real-time picture (6), wherein the target size is one of the target parameter, a parameter calculated from the target parameter, and a prestored parameter.
5. The 3D printer according to claim 4, characterized in that when the size of the real-time picture (6) is larger than the target size, the control means controls the adjusting means (3) to reduce the size of the real-time picture (6) so that the real-time picture (6) size reaches the target size;
when the size of the real-time picture (6) is smaller than the target size, the control device controls the adjusting device (3) to enlarge the size of the real-time picture (6) so that the size of the real-time picture (6) reaches the target size.
6. The 3D printer according to claim 4, characterized in that a 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 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.
7. The 3D printer according to claim 1, wherein the projection device (2) is an optical engine, the adjustment device (3) includes a zoom lens and a driving motor, the zoom lens includes a lens, the zoom lens is disposed on an output end of the optical engine, so that light emitted by the optical engine is irradiated onto the printing platform through the lens, the lens is connected to the driving motor, and the control device is electrically connected to the driving motor to control the driving motor to drive the lens to move in a light emitting direction of the optical engine, so as to adjust a focal length of the zoom lens.
8. A control method of a 3D printer, the 3D printer comprising a printing platform (1), a projection device (2), an adjustment device (3), and a control device, the control method comprising:
controlling the projection device (2) to emit light and form an initial image on the printing platform (1); controlling the adjusting means (3) to adjust the size of the initial image.
9. The control method according to claim 8, wherein the 3D printer further comprises an input device, the control method further comprising:
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.
10. The control method according to claim 8 or 9, characterized in that the 3D printer further comprises an image acquisition device (4), the control method further comprising:
controlling an image acquisition device (4) to acquire a platform image in real time 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 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 (3) to amplify the real-time image until the size of the real-time image reaches the target size.
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