Ink jet nozzle detection image acquisition device and method and 3D printer

Abstract

The invention provides an ink jet nozzle detection image acquisition device and method and a 3D printer, and the device comprises a transparent detection platform, a camera device, a light source device, a backboard and a platform cleaning device. The transparent detection platform can be used for bearing a detection printing model jetted by the ink jet nozzle to be detected according to a preset standard detection pattern. The light source device can be used for irradiating uniform illumination light to the transparent detection platform. A camera device may be used to acquire detection images. The backplane may be used to provide a background of the detection image to highlight the detection print model. The platform cleaning device can be used for cleaning the detection printing model on the transparent detection platform. According to the device, the compatibility of colored, transparent or semitransparent ink materials can be improved through uniform illumination, and the influence of reflection, shadow or non-uniform illumination on a detection printing model is effectively eliminated, so that a clear detection image can be acquired, and the accuracy of acquiring the detection image of the ink jet nozzle is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printing, and in particular to an inkjet nozzle detection image acquisition device and method and a 3D printer. Background Art

[0002] Inkjet 3D printing (3D printing) technology is an advanced additive manufacturing technology, including binder jetting, material jetting and related derivative processes. Specifically, inkjet 3D printing technology can accurately spray liquid or semi-liquid materials (such as photosensitive resins, ceramic slurries or metal inks) through inkjet nozzles to solidify or deposit layer by layer, and finally construct three-dimensional parts. Among them, the jetting performance and stability of the inkjet nozzle play a vital role in the printing quality. If the nozzle (or nozzle) of the inkjet nozzle is blocked or the jet is abnormal, it will cause the printing pattern to be missing, the surface defects of the parts, and even affect the mechanical properties and structural integrity of the parts. Therefore, the abnormality of the inkjet nozzle will not only reduce production efficiency, but also increase material waste and equipment maintenance costs.

[0003] In the related art, the inkjet head detection method usually first controls the inkjet head to print a test pattern on a paper base or other substrate. Then, a detection image of the test pattern is collected. Finally, the inkjet head nozzle is judged whether it is blocked or abnormal through manual inspection or visual comparison based on the detection image.

[0004] However, the printing material used in inkjet 3D printing is usually translucent or colorless transparent ink, and its optical properties are significantly different from those of colored ink. The light source used to collect the detection image in the related technology is prone to reflection and shadow, making it impossible to accurately identify the details of the colorless transparent or translucent ink jet in the collected detection image, resulting in the inability to clearly and accurately collect the detection image of the inkjet nozzle, which in turn makes it difficult to efficiently and accurately detect the inkjet nozzle. Summary of the invention

[0005] The technical problem to be solved by the present invention is that it is impossible to clearly and accurately collect the detection image of the inkjet nozzle.

[0006] In order to solve the above technical problems, the present invention provides an inkjet head detection image acquisition device, method and 3D printer, which specifically adopt the following technical solutions:

[0007] In a first aspect, the present invention provides an inkjet nozzle detection image acquisition device, comprising: a transparent detection platform, a camera device, a light source device, a back plate and a platform cleaning device. The camera device and the back plate are arranged on both sides of the transparent detection platform opposite to each other, and the camera device is arranged perpendicular to the transparent detection platform. The transparent detection platform is used to carry a detection print model sprayed by the inkjet nozzle to be tested according to a preset standard detection pattern. The light source device is used to irradiate uniform illumination light to the transparent detection platform. The camera device is used to collect a detection image, and the detection image is used to characterize the detection print model and the back plate. The back plate is used to provide a background for the detection image to highlight the detection print model. The platform cleaning device is used to clean the detection print model on the transparent detection platform.

[0008] The device can carry the test print model sprayed by the inkjet nozzle to be tested through a transparent test platform. Then, a uniform illumination light is irradiated to the transparent test platform through a light source device. Finally, a test image is collected through a camera device, and the test image includes: a test print model image and a back plate image. The device can improve the compatibility with colored, transparent or translucent ink materials through uniform illumination, ensuring that clear and accurate test images can be collected for both colored and colorless ink materials. The device can also effectively eliminate the influence of reflection, shadow or uneven illumination on the test print model through uniform illumination, ensuring the consistency and stability of the test image acquisition. In this way, the device can collect clear test images and effectively improve the accuracy of collecting inkjet nozzle test images.

[0009] In combination with the first aspect, in an optional implementation, the camera device and the light source device are respectively arranged on two sides of the transparent detection platform, and the light source device is arranged between the transparent detection platform and the back plate.

[0010] In this implementation, the camera device and the light source device are respectively arranged on both sides of the transparent detection platform, so that the backlighting and front lighting of the detection printing model can be realized. It is not only easy to identify the detection printing model sprayed with colored ink materials, but also more helpful to identify the detection printing model sprayed with transparent or semi-transparent ink materials, thereby effectively improving the clarity and accuracy of the collected detection image.

[0011] In combination with the first aspect, in an optional implementation manner, the camera device and the light source device are arranged on the same side of the transparent detection platform, and the light source device is arranged between the transparent detection platform and the camera device.

[0012] In this implementation, the camera device and the light source device are respectively arranged on both sides of the transparent detection platform, which is convenient for identifying the detection printing model sprayed with colored, transparent or translucent ink materials, and the device structure is more compact, reducing the overall space occupied by the inkjet nozzle detection image acquisition, facilitating integration and deployment, especially in a production environment with limited space. It has obvious advantages.

[0013] In combination with the first aspect, in an optional implementation, the angle range between the illumination light emitted by the light source device and the transparent detection platform is: 0°-90°.

[0014] In this implementation, the angle between the illumination light and the transparent detection platform can be adjusted between 0° and 90° to adapt to the refractive index of different ink materials to achieve the best illumination effect.

[0015] In combination with the first aspect, in an optional implementation, the light source device includes one or more of the following light sources: an LED light source, an RGB light source, and a multi-spectrum light source.

[0016] In this implementation, one or more combinations of LED light sources, RGB light sources, and multi-spectrum light sources can be selected as the light source device according to the optical properties of the ink material of the detection printing model. This helps to highlight the line features of the detection printing model, making it easier for the collected detection image to more clearly identify the detection printing model.

[0017] In combination with the first aspect, in an optional implementation, the platform cleaning device includes one or more of the following: a cleaning blade, a cleaning brush head, a cleaning spray, and a pneumatic cleaning device.

[0018] In this implementation, one or more of a cleaning scraper, a cleaning brush head, a cleaning spray, and a pneumatic cleaning device may be selected and combined into a platform cleaning device, thereby improving the cleaning efficiency and cleanliness of the transparent detection platform.

[0019] In combination with the first aspect, in an optional implementation, a hydrophobic layer is provided on the surface of the transparent detection platform.

[0020] In this implementation, the hydrophobic layer of the detection platform can effectively prevent the diffusion of the ink material ejected by the inkjet head to be tested, thereby ensuring that the detection lines of the ejected detection print model are clearly visible.

[0021] In combination with the first aspect, in an optional implementation, the light source device includes: two bar-shaped light sources, and the two bar-shaped light sources are arranged on the same side at two ends of the transparent detection platform opposite to each other.

[0022] In this implementation, the two strip light sources can not only effectively emit uniform illumination light, but also effectively simplify the structure of the inkjet head detection image acquisition device, reduce the size of the device, and reduce the cost of the inkjet head detection image acquisition device.

[0023] In a second aspect, the present invention provides an inkjet nozzle detection image acquisition method, comprising: first, in response to a detection instruction, the inkjet nozzle to be tested is moved above a transparent detection platform, and the inkjet nozzle to be tested is controlled to spray a detection print model on the transparent detection platform according to a preset standard detection pattern. Then, the light source device is turned on to irradiate uniform illumination light to the transparent detection platform. Next, a detection image is acquired by a camera device, and the detection image is used to characterize the detection print model and the back plate. Finally, after the camera device acquires the detection image, the detection print model on the transparent detection platform is cleaned by a platform cleaning device.

[0024] In a third aspect, a 3D printer is provided, comprising: an inkjet head detection image acquisition device as provided in the first aspect and any optional implementation method, an inkjet head to be tested, an ink storage cartridge, a printing platform and a material storage box. The inkjet head detection image acquisition device is used to acquire a detection image of the inkjet head to be tested. The ink storage cartridge is connected to the inkjet head to be tested, and the ink storage cartridge is used to provide ink material to the inkjet head to be tested. The printing platform is used for the inkjet head to be tested to print a target model. The material storage box is used to store ink material.

[0025] In a fourth aspect, an electronic device is provided, comprising: a memory and one or more processors; the memory is coupled to the processor; wherein computer program code is stored in the memory, and the computer program code comprises computer instructions, and when the computer instructions are executed by the processor, the electronic device executes the method provided in the second aspect above.

[0026] In a fifth aspect, a computer-readable storage medium is provided, comprising computer instructions. When the computer instructions are executed on an electronic device, the electronic device executes the method provided in the second aspect.

[0027] It can be understood that the beneficial effects that can be achieved by the inkjet head detection image acquisition method provided in the second aspect, the 3D printer in the third aspect, the electronic device in the fourth aspect, and the computer-readable storage medium in the fifth aspect can refer to the beneficial effects in the first aspect and any possible design method thereof, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the structure of the inkjet nozzle detection image acquisition device provided in the embodiment of the present application Figure 1 ;

[0029] Figure 2A schematic diagram of the structure of an inkjet nozzle to be tested provided in an embodiment of the present application;

[0030] Figure 3 A schematic diagram of a detection image provided in an embodiment of the present application;

[0031] Figure 4 A schematic diagram of the structure of the inkjet nozzle detection image acquisition device provided in the embodiment of the present application Figure 2 ;

[0032] Figure 5 A schematic diagram of the structure of the inkjet nozzle detection image acquisition device provided in the embodiment of the present application Figure 3 ;

[0033] Figure 6 A schematic diagram of the flow of an inkjet nozzle detection image acquisition method provided in an embodiment of the present application;

[0034] Figure 7 A schematic diagram of the structure of a 3D printer provided in an embodiment of the present application. DETAILED DESCRIPTION

[0035] The following embodiments are described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following embodiments do not represent all implementations consistent with the present application. They are only examples of systems and methods consistent with some aspects of the present application as detailed in the claims.

[0036] 3D printing technology, also known as additive manufacturing technology (AM), is a technology that manufactures physical parts by accumulating materials layer by layer based on three-dimensional data. Among them, inkjet 3D printing technology is an advanced additive manufacturing technology. Specifically, inkjet 3D printing technology can accurately spray liquid or semi-liquid materials (such as photosensitive resin, ceramic slurry or metal ink) through inkjet nozzles, solidify or deposit them layer by layer, and finally construct three-dimensional parts. With high production efficiency, wide material compatibility and excellent precision control, inkjet 3D printing technology has been widely used in manufacturing, biomedicine, aerospace and other fields.

[0037] Among them, the jetting performance and stability of the inkjet nozzle play a vital role in the printing quality. If the nozzle hole (or nozzle) of the inkjet nozzle is blocked or the jetting is abnormal, it will lead to missing printing patterns, surface defects of parts, and even affect the mechanical properties and structural integrity of parts. Therefore, the abnormality of the inkjet nozzle will not only reduce production efficiency, but also increase material waste and equipment maintenance costs.

[0038] In the related art, the inkjet head detection method usually first controls the inkjet head to print a test pattern on a paper base or other substrate. Then, a detection image of the test pattern is collected. Finally, the inkjet head nozzle is judged whether it is blocked or abnormal through manual inspection or visual comparison based on the detection image.

[0039] However, the printing material used in inkjet 3D printing is usually translucent or colorless transparent ink, and its optical properties are significantly different from those of colored ink. The light source used to collect the detection image in the related technology is prone to reflection and shadow, making it impossible to accurately identify the details of the colorless transparent or translucent ink jet in the collected detection image, resulting in the inability to clearly and accurately collect the detection image of the inkjet nozzle, which in turn makes it difficult to efficiently and accurately detect the inkjet nozzle.

[0040] In order to solve the above problems, the embodiments of the present application provide an inkjet head detection image acquisition device, method and 3D printer. Among them, the inkjet head detection image acquisition device can irradiate uniform illumination light to the transparent detection platform through a light source device. Then, a detection image is acquired through a camera device, and the detection image includes: a detection print model and a back plate image sprayed on the transparent detection platform by the inkjet head to be tested. The inkjet head detection image acquisition device can improve the compatibility with colored, transparent or translucent ink materials through the uniform illumination of the light source device, effectively eliminate the influence of reflection, shadow or uneven illumination on the detection print model, and then can acquire clear detection images, thereby improving the accuracy of acquiring inkjet head detection images.

[0041] The solution provided by the embodiment of the present application is introduced below in conjunction with the accompanying drawings.

[0042] Specifically, Figure 1 A schematic diagram of the structure of the inkjet nozzle detection image acquisition device provided in the embodiment of the present application Figure 1 ,like Figure 1 As shown, the inkjet nozzle detection image acquisition device 100 provided in the embodiment of the present application includes: a transparent detection platform 110, a light source device 120, a camera device 130, a back plate 140 and a platform cleaning device 150.

[0043] In the embodiment of the present application, the inkjet head detection image acquisition device 100 can be used to acquire the detection image of the inkjet head 200 to be tested. Figure 2 The schematic diagram of the structure of the inkjet nozzle to be tested provided in the embodiment of the present application is as follows: Figure 2 As shown, the bottom of the inkjet head 200 to be tested is provided with a plurality of nozzles 201, and the plurality of nozzles 201 can be arranged in a matrix form with equal spacing. The inkjet head 200 to be tested can spray ink material for printing through the nozzles 201 to make a target model.

[0044] Continue to see Figure 1 In the inkjet head detection image acquisition device 100, the camera device 130 and the back plate 140 are arranged on both sides of the transparent detection platform 110, and the camera device 130 is arranged perpendicular to the transparent detection platform 110. In this way, the camera device 130 can acquire the detection image perpendicular to the detection printing model on the transparent detection platform 110 to prevent the detection printing model in the detection image from being deformed, so as to improve the accuracy of the detection image acquisition.

[0045] The transparent detection platform 110 can be used to carry the detection printing model of the inkjet head 200 to be tested according to the preset standard detection pattern. That is, the inkjet head 200 to be tested can spray ink material through the nozzle 201 on the transparent detection platform 110 to produce the detection printing model. The preset standard detection pattern can be set according to the model of the inkjet head 200 to be tested and the actual application requirements. The preset standard detection pattern highlights the nozzle state of the nozzle and can effectively reflect important information such as whether the nozzle is blocked and whether the spraying is uniform.

[0046] Specifically, the transparent detection platform 110 is made of transparent material, for example, the transparent detection platform 110 can be a transparent glass plate. In this way, the illumination light irradiated by the light source device 120 can pass through the transparent detection platform 110 and the detection print model. However, due to the different materials of the transparent detection platform 110 and the detection print model, the reflection, refraction and transmission of the illumination light are different. In this way, the detection print model can be more prominently displayed, and the lines of the detection print model can be clearer and more obvious, thereby improving the clarity and accuracy of the collected detection image.

[0047] In some embodiments, the surface of the transparent detection platform 110 is hydrophobic, that is, a hydrophobic layer may be provided on the surface of the transparent detection platform 110. In this way, the diffusion of the ink material ejected by the inkjet head 200 to be tested can be effectively prevented, thereby ensuring that the test lines of the ejected test print model are clearly visible.

[0048] The light source device 120 can be used to irradiate uniform illumination light to the transparent detection platform 110. In this way, the uniform illumination light can be irradiated on the transparent detection platform 110 and the detection printed model, and the display effect of the detection printed model is highlighted by utilizing the reflection, refraction and transmission effects of the illumination light, that is, the visual effect of the detection printed model is enhanced, so that it can be compatible with detection printed models printed by different colors, transparent or translucent ink materials, and thus can realize clear acquisition of detection images.

[0049] In some embodiments, the angle between the illumination light emitted by the light source device 120 and the transparent detection platform 110 is in the range of 0°-90°. Specifically, according to the installation method of the light source device 120, the angle between the illumination light and the transparent detection platform 110 can be adjusted between 0° and 90° to adapt to the refractive index of different ink materials to achieve the best lighting effect.

[0050] In some embodiments, the light source device 120 includes one or more of the following light sources: a light-emitting diode (LED) light source, a red green blue (RGB) light source, and a multi-spectrum light source.

[0051] Among them, the LED light source can convert electrical energy into visible light, so that it can emit uniform illumination light. The RGB light source can emit illumination light of different colors with a combination of red, green and blue, that is, it can emit color illumination light that can effectively highlight the lines of the detection print model according to the color and other characteristics of the ink material of the detection print model. The multi-spectral light source can irradiate illumination light of one or more different band combinations according to the optical properties of the ink material of the detection print model to highlight the line features of the detection print model. In this way, the collected detection image can be more clearly identified to detect the print model.

[0052] In one implementation, one or a combination of LED light sources, RGB light sources, and multi-spectrum light sources may be selected as the light source device 120 according to the optical properties of the ink material of the detected printing model.

[0053] In some embodiments, Figure 1 As shown, the light source device 120 may include: two bar-shaped light sources, which are arranged on the same side at two ends of the transparent detection platform 110 opposite to each other and close to the transparent detection platform 110. In this way, the two bar-shaped light sources can effectively emit uniform illumination light, and can also effectively simplify the structure of the inkjet head detection image acquisition device 100, reduce the size of the device, and reduce the cost of the inkjet head detection image acquisition device 100.

[0054] In some embodiments, the light source device 120 may further include: four bar-shaped light sources, which are arranged on the same side around the four sides of the transparent detection platform 110 and close to the transparent detection platform 110. In this way, the brightness of the illumination light can be increased by the four bar-shaped light sources, the line features of the detection printing model can be further highlighted, and the clarity of the detection printing model in the detection image can be further improved.

[0055] In some embodiments, the light source device 120 may also be an annular light source, which is disposed on one side of the transparent detection platform 110 and close to the transparent detection platform 110. In this way, the annular light source can provide uniform illumination light more accurately and quickly, thereby effectively highlighting the line features of the printed model.

[0056] The camera device 130 can be used to collect a test image, and the test image can be used to characterize the test print model and the back plate 140. Further, the test image can be used by the test system to determine the working state of the nozzle in the inkjet nozzle 200 to be tested.

[0057] Specifically, the camera device 130 can collect the detection image of the inkjet nozzle 200 to be tested in a direction perpendicular to the transparent detection platform 110. The detection image can be used to characterize the detection printing model and the back plate 140, that is, the detection image includes: an image of the detection printing model and an image of the back plate 140. In other words, the detection image can be used to characterize the printing state of the detection printing model and the working state of the inkjet nozzle 200 to be tested.

[0058] For example, Figure 3 A schematic diagram of a detection image provided in an embodiment of the present application, such as Figure 3 As shown, the white area 301 in the detection image represents the detection printing model, and the background area 302 in the detection image excluding the white area 301 represents the back plate 140.

[0059] In some embodiments, the camera device 130 may include: an industrial camera and an industrial lens. The industrial camera may be a high-resolution camera. For example, the industrial camera may be a 5MP area array industrial camera with a global shutter function, which can quickly capture the detection image and ensure the high resolution and clarity of the detection image.

[0060] The focal length of the industrial lens can be determined based on the selection of the industrial camera. The industrial lens can provide a sufficient field of view and working distance to ensure that the line details of the printed model can be accurately captured. The optical performance of the industrial lens ensures the clarity of the inspection image and the display of the details of the printed model.

[0061] The back plate 140 can be used to provide a background for the inspection image to highlight the inspection print model.

[0062] Specifically, the back plate 140 can be made of dark (eg black), low-reflective and opaque material. In this way, the back plate 140, as the background of the detection image, can effectively highlight the line features of the detection print model and improve the clarity of the detection print model recognition.

[0063] The platform cleaning device 150 can be used to clean the detection print model on the transparent detection platform 110 .

[0064] Specifically, the platform cleaning device 150 can clean the test print model and stains on the transparent test platform 110 after each camera device 130 captures the test image, so as to ensure that a clean and residue-free platform is provided for the next time the inkjet head 200 to be tested sprays the test print model. In this way, the platform cleaning device 150 can effectively avoid the influence of dust and ink material residue on the quality of the test image, and ensure the accuracy and reliability of the collected test image.

[0065] In some embodiments, the platform cleaning device 150 includes one or more of the following: a cleaning blade, a cleaning brush head, a cleaning spray, and a pneumatic cleaning device.

[0066] The cleaning scraper is arranged to fit the surface of the transparent detection platform 110 , and the detection print model and stains on the transparent detection platform 110 are scraped off by the movement of the cleaning scraper.

[0067] The cleaning brush head is arranged to fit the surface of the transparent detection platform 110 , and the detection print model and stains on the transparent detection platform 110 can be brushed off by moving and rotating the cleaning scraper.

[0068] The cleaning spray can clean the detection print model and stains on the transparent detection platform 110 by spraying a cleaning agent spray.

[0069] The pneumatic cleaning device can use compressed air as a power source and utilize the power generated by high-pressure gas to clean the inspection print model and stains on the transparent inspection platform 110 .

[0070] In one implementation, in order to improve the cleaning efficiency and cleanliness of the transparent detection platform 110 , multiple devices selected from cleaning blades, cleaning brush heads, cleaning sprays, and pneumatic cleaning devices may be combined into a platform cleaning device 150 to clean the transparent detection platform 110 together.

[0071] In some embodiments, the camera device 130 and the light source device 120 are respectively disposed on two sides of the transparent detection platform 110 , and the light source device 120 is disposed between the transparent detection platform 110 and the back plate 140 .

[0072] Specifically, in one implementation, Figure 1As shown, the camera device 130 can be arranged above the transparent detection platform 110, that is, the camera device 130 can be arranged on the side of the transparent detection platform 110 for carrying the detection print model. The light source device 120 and the back plate 140 can be arranged below the transparent detection platform 110 (or called the back side). In this case, for the area where the transparent detection platform 110 detects the print model, the illumination light irradiated by the light source device 120 first irradiates and passes through the transparent detection platform 110, and then irradiates on the detection print model, thereby realizing backlighting of the detection print model to further highlight the lines of the detection print model.

[0073] In another implementation, Figure 4 A schematic diagram of the structure of the inkjet nozzle detection image acquisition device provided in the embodiment of the present application Figure 2 ,like Figure 4 As shown, the light source device 120 and the back plate 140 can be arranged above the transparent detection platform 110, that is, the light source device 120 and the back plate 140 can be arranged on the side of the transparent detection platform 110 for carrying the detection print model. The camera device 130 can be arranged below the transparent detection platform 110 (or called the back side). In this case, for the area where the transparent detection platform 110 detects the print model, the illumination light irradiated by the light source device 120 first irradiates and passes through the detection print model, and then irradiates on the transparent detection platform 110, thereby realizing the front illumination of the detection print model.

[0074] In this way, the camera device 130 and the light source device 120 are respectively arranged on both sides of the transparent detection platform 110, so that backlighting and front lighting of the detection printing model can be realized. It is not only convenient to identify the detection printing model sprayed with colored ink materials, but also helpful to identify the detection printing model sprayed with transparent or semi-transparent ink materials, so as to effectively improve the clarity and accuracy of the collected detection image.

[0075] In some embodiments, the camera device 130 and the light source device 120 may also be disposed on the same side of the transparent detection platform 110 , and the light source device 120 is disposed between the transparent detection platform 110 and the camera device 130 .

[0076] Specifically, in one implementation, Figure 5 A schematic diagram of the structure of the inkjet nozzle detection image acquisition device provided in the embodiment of the present application Figure 3 ,like Figure 5 As shown, the camera device 130 and the light source device 120 can be arranged above the transparent detection platform 110, that is, the camera device 130 and the light source device 120 can be arranged on a side of the transparent detection platform 110 for carrying and detecting the printed model.

[0077] In another implementation, the camera device 130 and the light source device 120 may also be disposed below (or referred to as the back side) the transparent detection platform 110 .

[0078] In this way, the camera device 130 and the light source device 120 are respectively arranged on both sides of the transparent detection platform 110, which is convenient for identifying the detection printing model sprayed with colored, transparent or translucent ink materials, and the device structure is more compact, reducing the overall space occupied by the inkjet nozzle detection image acquisition 100, facilitating integration and deployment, especially in a production environment with limited space. It has obvious advantages.

[0079] By using the inkjet nozzle detection image acquisition device (hereinafter referred to as the device) provided in the embodiment of the present application, the detection print model sprayed by the inkjet nozzle to be tested can be carried on a transparent detection platform, and the transparent detection platform can be irradiated with uniform illumination light through a light source device. Finally, the detection image is acquired by a camera device, and the detection image includes: a detection print model image and a backplane image. The uniform illumination of the device can improve the compatibility with colored, transparent or translucent ink materials, ensuring that clear and accurate detection images can be acquired regardless of whether it is a colored or colorless ink material. The device can also effectively eliminate the influence of reflection, shadow or uneven illumination on the detection print model through uniform illumination, and ensure the consistency and stability of the detection image acquisition. In this way, the device can acquire clear detection images, effectively improving the accuracy of acquiring inkjet nozzle detection images.

[0080] In addition, the device improves the response speed and image acquisition efficiency of the detection system by simplifying the hardware configuration. The efficient detection image acquisition method of the device can help complete the online detection of the print nozzle in a short time, ensure the real-time monitoring and rapid feedback of the nozzle status, effectively improve the production efficiency, and reduce the production downtime caused by nozzle abnormalities. The device also adopts a simple and low-cost equipment configuration. Through the combination of a streamlined camera device and a light source device, the equipment cost is reduced, while the acquisition accuracy and stability of the detection image are guaranteed, which is suitable for large-scale applications.

[0081] The present application also provides an inkjet nozzle detection image acquisition method, which can be applied to Figure 1 The inkjet nozzle detection image acquisition device shown. Specifically, Figure 6 A schematic diagram of a flow chart of an inkjet head detection image acquisition method provided in an embodiment of the present application, such as Figure 6 As shown, the method includes the following steps S101-S104:

[0082] S101, in response to a detection instruction, the inkjet head to be tested is moved above a transparent detection platform, and the inkjet head to be tested is controlled to spray a detection print model on the transparent detection platform according to a preset standard detection pattern.

[0083] S102, turning on the light source device to irradiate uniform illumination light to the transparent detection platform.

[0084] S103, collecting a detection image through a camera device, wherein the detection image is used to characterize the detection printing model and the back plate.

[0085] S104, after the camera device acquires the detection image, the detection print model on the transparent detection platform is cleaned by the platform cleaning device.

[0086] In some embodiments, when the detection images of multiple inkjet heads to be tested are collected, the detection image of each inkjet head to be tested may be collected separately, or the detection images of all the inkjet heads to be tested may be collected simultaneously.

[0087] Specifically, for collecting the detection images of each inkjet head to be tested, the above S101-S104 are executed in sequence for each inkjet head to be tested, that is, in S101, the inkjet head to be tested that needs to be collected is moved above the transparent detection platform. In addition, by executing S104, after each detection image is collected, the detection print model on the transparent detection platform is cleaned by the platform cleaning device, so as to facilitate the subsequent collection of detection images of other inkjet heads to be tested.

[0088] For simultaneously collecting the test images of all the inkjet heads to be tested, when executing S101, each inkjet head to be tested can be moved to the top of the transparent test platform in turn, and the test print model can be sprayed on the transparent test platform according to the preset standard test pattern. After all the inkjet heads to be tested have sprayed the test print model, S102-S104 are executed.

[0089] By using the inkjet nozzle detection image acquisition method provided in the embodiment of the present application, a detection print model sprayed by the inkjet nozzle to be tested can be carried on a transparent detection platform, and a uniform illumination light can be irradiated to the transparent detection platform through a light source device. Then, a detection image is acquired through a camera device, and the detection image includes: a detection print model image and a backplane image. The uniform illumination of the device can improve the compatibility with colored, transparent or translucent ink materials, ensuring that clear and accurate detection images can be acquired regardless of whether it is a colored or colorless ink material. The method can also effectively eliminate the influence of reflection, shadow or uneven illumination on the detection print model through uniform illumination, and ensure the consistency and stability of the detection image acquisition. In this way, the method can acquire clear detection images and effectively improve the accuracy of acquiring inkjet nozzle detection images.

[0090] The present application also provides a 3D printer, specifically, Figure 7 A schematic diagram of the structure of a 3D printer provided in an embodiment of the present application is shown in FIG. Figure 7As shown, the 3D printer 700 includes: the inkjet head detection image acquisition device 701 described in the above embodiment, the inkjet head to be tested 702, the ink storage box 703, the printing platform 704 and the material storage box 705.

[0091] The inkjet head detection image acquisition device 701 can be used to acquire the detection image of the inkjet head to be tested 702. The ink storage box 703 is connected to the inkjet head to be tested 702, and the ink storage box 703 can be used to provide ink material to the inkjet head to be tested 702. The printing platform 704 is used for the inkjet head to be tested 702 to print the target model. The target model is the model that needs to be produced in the actual application. The material storage box 705 is used to store the ink material.

[0092] An embodiment of the present invention further provides an electronic device, which may include: a display screen, a memory, and one or more processors. The display screen, the memory, and the processor are coupled. The memory is used to store computer program code, and the computer program code includes computer instructions. When the processor executes the computer instructions, the electronic device can execute the various methods or steps executed in the above-mentioned inkjet nozzle detection image acquisition method embodiment. Of course, the electronic device includes but is not limited to the above-mentioned display screen, the memory, and one or more processors.

[0093] An embodiment of the present invention further provides a computer-readable storage medium for storing computer instructions for executing the above-mentioned inkjet head detection image acquisition method.

[0094] Through the description of the above implementation methods, technical personnel in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0095] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0096] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0097] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0098] Similar parts between the embodiments provided in this application can be referenced to each other. The specific implementation methods provided above are only a few examples under the general concept of this application and do not constitute a limitation on the protection scope of this application. For those skilled in the art, any other implementation methods expanded based on the scheme of this application without creative work belong to the protection scope of this application.

Claims

1. An inkjet head detection image acquisition device, characterized in that: include: Transparent detection platform, camera device, light source device, back plate and platform cleaning device; Wherein, the camera device and the back plate are arranged on both sides of the transparent detection platform opposite to each other, and the camera device is arranged perpendicular to the transparent detection platform; The transparent detection platform is used to carry the detection printing model of the inkjet head to be tested spraying according to the preset standard detection pattern; The light source device is used to irradiate uniform illumination light to the transparent detection platform; The camera device is used to collect a detection image, and the detection image is used to characterize the detection print model and the back plate; The back plate is used to provide a background for the detection image to highlight the detection print model; The platform cleaning device is used to clean the detection print model on the transparent detection platform.

2. The device according to claim 1, characterized in that The camera device and the light source device are respectively arranged on two sides of the transparent detection platform, and the light source device is arranged between the transparent detection platform and the back plate.

3. The device according to claim 1, characterized in that The camera device and the light source device are arranged on the same side of the transparent detection platform, and the light source device is arranged between the transparent detection platform and the camera device.

4. The device according to any one of claims 1 to 3, characterized in that: The angle between the illumination light emitted by the light source device and the transparent detection platform is in the range of 0°-90°.

5. The device according to claim 1, characterized in that The light source device includes one or more of the following light sources: an LED light source, an RGB light source, and a multi-spectrum light source.

6. The device according to claim 1, characterized in that The platform cleaning device includes one or more of the following: a cleaning scraper, a cleaning brush head, a cleaning spray, and a pneumatic cleaning device.

7. The device according to claim 1, characterized in that A hydrophobic layer is arranged on the surface of the transparent detection platform.

8. The device according to claim 1, characterized in that The light source device comprises: two bar-shaped light sources, and the two bar-shaped light sources are arranged opposite to each other on the same side at two ends of the transparent detection platform.

9. A method for collecting images for inkjet head detection, characterized in that: include: In response to the detection instruction, the inkjet nozzle to be tested is moved above the transparent detection platform, and the inkjet nozzle to be tested is controlled to spray the detection print model on the transparent detection platform according to a preset standard detection pattern; Turning on the light source device to irradiate uniform illumination light to the transparent detection platform; Acquire a detection image by a camera device, wherein the detection image is used to characterize the detection printing model and the back plate; After the camera device acquires the detection image, the detection print model on the transparent detection platform is cleaned by a platform cleaning device.

10. A 3D printer, characterized in that: include: The inkjet nozzle detection image acquisition device, the inkjet nozzle to be tested, the ink storage cartridge, the printing platform and the material storage box as described in any one of claims 1 to 8; Wherein, the inkjet nozzle detection image acquisition device is used to acquire the detection image of the inkjet nozzle to be tested; The ink storage box is connected to the inkjet nozzle to be tested, and the ink storage box is used to provide ink material to the inkjet nozzle to be tested; The printing platform is used for the inkjet head to be tested to print the target model; The material storage box is used to store the ink material.

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