Detection system for nozzle assembly

Abstract

The utility model discloses a detection system for a nozzle assembly. The detection system comprises a base station, a mounting frame, a visual camera unit, a nozzle unit, a first motion assembly, an ink droplet flying observation unit and an ink droplet dripping observation unit, wherein the mounting frame is arranged on the upper surface of the base station; the visual camera unit and the spray head unit are respectively arranged on the middle cantilever of the mounting frame and are positioned on two sides of the middle cantilever of the mounting frame; the first movement assembly is arranged on the upper surface of the base table and located below the middle cantilever of the mounting frame. An ink droplet flying observation unit and an ink droplet dripping observation unit are arranged on the first movement assembly, so that after the first movement assembly drives the ink droplet flying observation unit and the ink droplet dripping observation unit to move to the position below the spray head unit in the first direction, spray head detection is carried out. According to the system, the nozzle can be detected, and the nozzle debugging time of the ink-jet printer and the nozzle debugging time during the subsequent maintenance period are shortened.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of inkjet printing technology for display panel production and manufacturing, in particular to a detection system for a printhead assembly. BACKGROUND

[0002] At present, inkjet printing technology has a wide application prospect in the manufacturing fields of information, energy, medical treatment, national defense, etc., and in recent years, it is increasingly applied to the fields of OLED, RFID, thin-film solar cell, wearable flexible device, PCB, intelligent skin, etc.

[0003] In addition, the detection of the printhead in the inkjet printer can be converted into the observation of the parameters of the ink droplets ejected by the printhead. The inkjet printing technology can print on demand, and the ejected ink droplets form a patterned device or a uniform and dense packaging layer. The volume, speed, landing position, landing diameter, etc. of the ink droplets have a great influence on the printing effect, and need to be observed and analyzed.

[0004] At present, in the industrial application of display screen production and manufacturing, the ink droplet flight observation technology is used to observe the volume, flight speed, flight angle, etc. of the ink droplets. For example, CN115782404A discloses an integrated ink droplet observation and collection device and method for inkjet printing, which is used to measure the flight parameters of the ink droplets. The landing position and landing diameter of the ink droplets affect the precision of inkjet printing, which are observed by the ink droplet landing observation technology. For example, CN117218984A discloses a detection unit and a detection mechanism for preparing a display panel, in which the printhead ejects ink droplets on a detection film, and then a visual camera is used to observe the diameter and other parameters of the ink droplets.

[0005] However, the detection of the printhead is usually carried out online, that is, the printhead is transferred to the printhead detection area periodically or irregularly during the inkjet printing process to observe the flight of the ink droplets or the landing of the ink droplets. Then, according to the observation results of the ink droplet parameters, the printing parameters of the printhead (such as printhead printing waveform adjustment) are adjusted. At this time, the printhead is detected online, and the inkjet printing production line often needs to be stopped and waited, which affects the efficiency of inkjet printing. When the printing parameters of the printhead need to be adjusted, a long time is often needed, which may take several days. These two situations will cause losses to the inkjet printing production line.

[0006] Therefore, a detection system for a printhead assembly is needed to solve the above problems. SUMMARY

[0007] The application provides a detection system for a nozzle assembly, which can detect the nozzle offline, and the nozzle passing the offline detection can be used as a backup nozzle to replace the online nozzle conveniently; compared with the online detection of the nozzle, the system saves time and improves the printing efficiency of the production line of the inkjet printer; in addition, the online detection of the nozzle usually only adopts the ink drop flight observation or the ink drop drop observation, that is, the detection of the nozzle is incomplete, while the offline detection of the nozzle can detect the nozzle more completely, thereby shortening the nozzle debugging time of the inkjet printer and the nozzle debugging time during subsequent maintenance.

[0008] The application discloses a detection system for a nozzle assembly, which comprises a base, a mounting frame, a visual camera unit, a nozzle unit, a first motion assembly, an ink drop flight observation unit and an ink drop drop observation unit; wherein the mounting frame is arranged on the upper surface of the base; the visual camera unit and the nozzle unit are arranged on the middle cantilever of the mounting frame and located on the two sides of the middle cantilever of the mounting frame; the first motion assembly is arranged on the upper surface of the base and located below the middle cantilever of the mounting frame; the ink drop flight observation unit and the ink drop drop observation unit are arranged on the first motion assembly, so that the first motion assembly drives the ink drop flight observation unit and the ink drop drop observation unit to move to below the nozzle unit in the first direction, and then the nozzle detection is performed.

[0009] In the above scheme, the nozzle can be detected offline, compared with the online detection of the nozzle, the production line of the inkjet printer can reduce the time for stopping to detect the nozzle, and the printing efficiency of the production line of the inkjet printer is improved; the nozzle passing the offline detection can be used as a backup nozzle to replace the online nozzle conveniently; and compared with the online detection of the nozzle, the detection of the nozzle is more complete.

[0010] In a possible implementation, the detection system further comprises a second motion assembly; wherein the second motion assembly is arranged between the nozzle unit and the mounting frame, so that the second motion assembly drives the nozzle unit to move in the vertical direction.

[0011] In the above scheme, the problem that the nozzle unit needs to move in the vertical direction during the detection of the ink drop flight observation unit is solved; the second motion assembly for moving the nozzle unit in the vertical direction is provided. Of course, the ink drop flight observation unit can also be arranged to move in the vertical direction, and the position of the nozzle unit remains unchanged; compared with the two modes, the structure of the nozzle unit moving in the vertical direction is simpler.

[0012] In a possible implementation, the detection system further comprises a third movement component; wherein the third movement component is arranged between the ink drop flight observation unit and the first movement component, so that the third movement component drives the ink drop flight observation unit to move in a second direction.

[0013] In the above scheme, the movement of the ink drop flight observation unit in the second direction is solved. The second direction is perpendicular to the first direction. The ink ejection head of the inkjet printer has a certain length in the second direction, and the ink drop flight observation can only observe the length corresponding to a few ink ejection holes each time, so the ink drop flight observation unit needs to be able to move in the second direction. Of course, the ink ejection head can also be arranged to move in the second direction, and the position of the ink drop flight observation unit remains unchanged.

[0014] In a possible implementation, the detection system further comprises a fourth movement component; wherein the fourth movement component is arranged between the visual camera unit and the middle cantilever of the mounting frame, so that the fourth movement component drives the visual camera unit to move in a second direction.

[0015] In the above scheme, the movement of the visual camera in the second direction is solved. When the ink drop landing detection unit detects, the visual camera has a limited field of view, and the visual camera needs to move in the second direction to obtain a complete photo of the ink drop after printing.

[0016] In a possible implementation, the detection system further comprises a rack; wherein the base is arranged on the rack. A buffer pad can also be arranged between the base and the rack.

[0017] In the above scheme, the rack is arranged to facilitate the arrangement of electrical wiring in the rack.

[0018] In a possible implementation, the detection system further comprises a housing; wherein the housing is arranged in cooperation with the rack, and the housing is arranged on the rack; so that the base, the mounting frame, the visual camera unit, the ink ejection head unit, the first movement component, the ink drop flight observation unit, and the ink drop landing observation unit are all located inside the housing.

[0019] In the above scheme, the housing is arranged to use the inside of the housing as a closed space, which is not affected by external air flow or dust; and the printing atmosphere environment of the ink ejection head of the inkjet printer can be simulated, and the accuracy of off-line detection of the ink ejection head is improved.

[0020] In a possible implementation, the detection system further comprises a leveling base; wherein the leveling base is arranged at the bottom of the rack.

[0021] In the above scheme, the leveling base is arranged, and the rack is leveled conveniently.

[0022] In a possible implementation, the second movement assembly comprises a second driving assembly and a nozzle support; the nozzle unit is arranged on the nozzle support, and the nozzle support is connected with the second driving assembly.

[0023] In the above scheme, a specific connection mode of the nozzle unit and the second movement assembly is disclosed.

[0024] In a possible implementation, the detection system further comprises an ink drop wiping unit, wherein the ink drop wiping unit is arranged on the first movement assembly; and the ink drop wiping unit is arranged side by side with the ink drop flight observation unit and the ink drop falling observation unit.

[0025] In the above scheme, the detection system can further comprise an ink drop wiping unit, which is used to wipe residual ink drops on the nozzle, so as to avoid the blockage caused by too many residual ink drops in the nozzle hole or the influence of too many residual ink drops on the offline detection of the nozzle. The ink drop wiping unit can also not be arranged in the offline nozzle detection system as a regular unit, and the nozzle can also be wiped manually.

[0026] In a possible implementation, the detection system further comprises a low-frequency suction unit, wherein the low-frequency suction unit is arranged on the first movement assembly; and the low-frequency suction unit is arranged side by side with the ink drop wiping unit, the ink drop flight observation unit and the ink drop falling observation unit.

[0027] In the above scheme, the detection system can further comprise a low-frequency suction unit. The low-frequency suction unit can be arranged side by side and used to spray ink in a low-frequency manner in the idle time of the offline detection of the nozzle, so as to avoid that the nozzle hole is blocked after the ink in the nozzle hole is solidified for a long time. The low-frequency suction unit can also not be arranged in the offline nozzle detection system as a regular unit, for example, the position of the nozzle is stopped above the ink drop flight observation unit in the idle time of the offline detection of the nozzle, and the nozzle sprays ink in a low-frequency manner.

[0028] In summary, the present application has the following effects:

[0029] The offline detection of the nozzle can be achieved. Compared with the online detection of the nozzle, the production line of the inkjet printer can reduce the time for stopping to detect the nozzle, and the printing efficiency of the production line of the inkjet printer is improved. The nozzle that passes the offline detection can be used as a standby nozzle, which is convenient for replacing the online nozzle that fails. Moreover, compared with the online detection, the detection of the nozzle is more complete.

[0030] The problem that the nozzle unit needs to move in the vertical direction during the detection of the ink drop flight observation unit is solved.

[0031] Solve the problem of the ink drop flight observation unit moving in the second direction, which is perpendicular to the first direction;

[0032] Solve the problem of the visual camera moving in the second direction;

[0033] The shell can be set to make the inside of the shell a closed space, not affected by external air flow or dust, etc., and can simulate the print atmosphere environment of the inkjet printer, improving the accuracy of off-line detection of the nozzle;

[0034] The detection system can also include an ink drop wiping unit for wiping residual ink drops on the nozzle, which can avoid the blockage caused by too many residual ink drops in the nozzle or the influence of too many residual ink drops on off-line detection of the nozzle;

[0035] The detection system can also include a low-frequency suction unit. The low-frequency suction unit can be arranged side by side and used to spray ink in a low-frequency manner during the idle time of off-line detection of the nozzle to avoid long-term non-ink spraying of the nozzle, which can cause the nozzle to be blocked after the ink inside the nozzle solidifies. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 A detection system structure for a nozzle assembly disclosed in the specification of the present application;

[0037] Figure 2 A front view schematic diagram of the detection system structure for the nozzle assembly disclosed in the specification of the present application;

[0038] Figure 3 A top view schematic diagram of the detection system structure for the nozzle assembly disclosed in the specification of the present application;

[0039] Figure 4 A side view schematic diagram of the detection system structure for the nozzle assembly disclosed in the specification of the present application.

[0040] In the drawings: first motion assembly 100, second drive assembly 201, nozzle support 202, third motion assembly 300, fourth motion assembly 400, detachable unit 500, ink drop flight observation unit 600, ink drop drop observation unit 700, nozzle unit 800, visual camera unit 900, mounting frame 110, base 120, buffer pad 130, rack 140, leveling base 150. DETAILED DESCRIPTION

[0041] In order for those skilled in the art to better understand the technical solutions in the specification, the technical solutions in the specification will be clearly and completely described below in conjunction with the drawings in the embodiments of the specification. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0042] In the description of the embodiments of the present application, the words such as "for example" or "for instance" are used to represent an example, illustration or description. Any embodiment or design scheme described as "for example" or "for instance" in the embodiments of the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the words such as "for example" or "for instance" are intended to present the relevant concept in a specific manner.

[0043] The first direction in the specification is the printing direction of the nozzle in the inkjet printer, that is, the X-axis direction in the Figures 1-4 ; the second direction is the direction perpendicular to the printing direction of the nozzle, that is, the Y-axis direction in the Figures 1-4 ; and the vertical direction is the Z-axis direction perpendicular to the XY-axis plane.

[0044] The specification discloses a detection system for a nozzle assembly. As shown in Figures 1-4 ; the detection system comprises a base 120, a mounting frame 110, a visual camera unit 900, a nozzle unit 800, a first motion assembly 100, a droplet flight observation unit 600 and a droplet drop observation unit 700; wherein the mounting frame 110 is arranged on the upper surface of the base 120; the visual camera unit 900 and the nozzle unit 800 are arranged on the middle cantilever of the mounting frame 110 respectively and are located on both sides of the middle cantilever of the mounting frame 110; the first motion assembly 100 is arranged on the upper surface of the base 120 and is located below the middle cantilever of the mounting frame 110; the droplet flight observation unit 600 and the droplet drop observation unit 700 are arranged on the first motion assembly 100, so that the first motion assembly drives the droplet flight observation unit 600 and the droplet drop observation unit 700 to move to below the nozzle unit 800 in the first direction, and then the nozzle detection is performed.

[0045] At this time, the nozzle can be detected offline, and compared with the online detection of the nozzle, the production line of the inkjet printer can reduce the time for stopping for nozzle detection, and the printing efficiency of the production line of the inkjet printer is improved; the nozzle that passes the offline detection can be used as a spare nozzle, which is convenient for replacing the online nozzle that fails; and the nozzle offline detection is more complete than the online detection. The mounting frame 110 can be a gantry-shaped mounting frame.

[0046] The printhead assembly in the specification not only includes a printhead, but also includes an ink supply system of the printhead; the printhead assembly in the specification can also be referred to as a "printhead system". The detection system in the specification not only achieves early testing of the matching of the printhead and the ink, but also achieves pre-machine testing of the printhead, and further achieves stability testing (also referred to as aging testing) of the printhead.

[0047] In one example, the detection system further comprises a second motion assembly; wherein the second motion assembly is arranged between the printhead unit and the mounting rack, so that the second motion assembly drives the printhead unit to move in the vertical direction.

[0048] When observing the flight of ink droplets, the second motion assembly needs to first move the printhead into the ink droplet flight observation area (for example: the ink droplet observation area between the two reflecting prisms disclosed in CN115782404A Ink droplet observation and collection device and method for integrated inkjet printing), and then move the printhead away from the ink droplet flight observation area after all the ink ejection holes in the printhead perform ink droplet observation. At this time, the ink droplet flight observation unit needs to move the printhead unit in the vertical direction when detecting the ink droplets ejected by the printhead; therefore, the second motion assembly for vertical movement (Z-axis direction) of the printhead unit 800 can be arranged. Of course, the ink droplet flight observation unit can also be arranged to move in the vertical direction, and the position of the printhead unit remains unchanged; of the two ways, the structure of the printhead unit moving in the vertical direction is simpler.

[0049] In one example, the second motion assembly comprises a second drive assembly 201 and a printhead bracket 202; wherein the printhead unit 800 is arranged on the printhead bracket 202, and the printhead bracket 202 is connected with the second drive assembly 201.

[0050] As shown in Figure 1 and 2 , the second motion assembly comprises a second drive assembly 201 and a printhead bracket 202; the second drive assembly 201 is connected with the printhead unit 800 through the printhead bracket 202, and the printhead unit 800 is mounted on the printhead bracket 202. The second drive assembly 201 drives the printhead unit 800 to move in the vertical direction.

[0051] In one example, the detection system further comprises a third motion assembly 300; wherein the third motion assembly is arranged between the ink droplet flight observation unit 600 and the first motion assembly 100, so that the third motion assembly 300 drives the ink droplet flight observation unit 600 to move in the second direction (i.e. the Y-axis direction in Figure 3 .

[0052] At this time, the nozzle of the inkjet printer has a certain length in the second direction, and each ink drop flight observation can only observe the length corresponding to a few nozzle holes, so the ink drop flight observation unit needs to be movable in the second direction. Of course, here we can also set the nozzle to move in the second direction, and the ink drop flight observation unit position remains unchanged. For example Figure 1 and Figure 2 , the present application describes the ink drop flight observation unit moving in the second direction, and the nozzle position remains unchanged.

[0053] In addition, the first motion assembly 100 includes a first driving assembly and a mounting plate (not separately identified in the drawings), and the ink drop flight observation unit and the ink drop drop detection unit are arranged on the mounting plate. The mounting plate is connected with the first driving assembly, and the first driving assembly drives the ink drop flight observation unit and the ink drop drop detection unit to move in the first direction (i.e. the X-axis direction in Figure 2 The third motion assembly 300 includes a third driving assembly and an ink drop flight observation unit mounting plate (not separately identified in the drawings), and the ink drop flight observation unit is connected with the ink drop flight observation unit mounting plate. Then the ink drop flight observation unit mounting plate is connected with the third driving assembly, and the third driving assembly drives the ink drop flight observation unit to move in the second direction (i.e. the Y-axis direction in Figure 3 ).

[0054] In one example, the detection system further includes a fourth motion assembly 400; wherein the fourth motion assembly 400 is arranged between the visual camera unit 900 and the middle cantilever of the mounting rack, so that the fourth motion assembly 400 drives the visual camera unit 900 to move in the second direction.

[0055] At this time, when the ink drop drop detection unit detects, the visual camera has a limited field of view; the visual camera needs to move in the second direction to obtain the complete photo of the ink drop after printing. Of course, the fourth motion assembly 400 also includes a fourth driving assembly and a visual camera mounting rack (not separately identified in Figure 2 ), and the visual camera unit 900 is mounted in the visual camera mounting rack. The visual camera mounting rack is driven by the fourth driving assembly to move in the second direction (i.e. the Y-axis direction in Figure 3 ).

[0056] In one example, the detection system further includes a rack 140; wherein the base is arranged on the rack, and a buffer pad 130 is arranged between the base and the rack.

[0057] At this time, the rack is arranged to facilitate placing the wiring of electrical type in the rack. The buffer pad 130 reduces or avoids the influence of external vibration on the test of the detection system; the buffer pad 130 can be implemented by a buffer pad or a buffer air cushion, and the structure is not limited.

[0058] In one example, the detection system further comprises a housing; wherein the housing is arranged in cooperation with the rack, and the housing is arranged on the rack; so that the base, the mounting frame, the visual camera unit, the nozzle unit, the first motion assembly, the ink droplet flight observation unit, and the ink droplet drop observation unit are all located inside the housing.

[0059] At this time, the housing can be arranged to make the inside of the housing a closed space, which is not disturbed by external air flow or dust; and the printing atmosphere environment of the inkjet printer can be simulated to improve the accuracy of offline detection of the nozzle.

[0060] In one example, the detection system further comprises a leveling base; wherein the leveling base is arranged at the bottom of the rack.

[0061] As shown in Figure 2 , the leveling base 150; a plurality of leveling bases 150 play the role of support and leveling.

[0062] In one example, the detection system further comprises an ink droplet wiping unit, wherein the ink droplet wiping unit is arranged on the first motion assembly; the ink droplet wiping unit is arranged side by side with the ink droplet flight observation unit and the ink droplet drop observation unit.

[0063] At this time, the detection system can further comprise an ink droplet wiping unit, which is used to wipe residual ink droplets on the nozzle, which can avoid the blockage caused by too many residual ink droplets in the nozzle or the influence of too many residual ink droplets on the offline detection of the nozzle. The ink droplet wiping unit can also not be arranged as a regular unit in the offline nozzle detection system, and the nozzle can also be wiped manually. As shown in Figure 2 , the detachable unit 500 can be provided with an ink droplet wiping unit.

[0064] In addition, in the drawings of the present specification, the detachable unit 500, the ink droplet flight observation unit 600, and the ink droplet drop observation unit 700 are arranged on the first motion assembly 100 as an example. In the detection system of the inkjet printer, the detachable unit 500 can not be provided with a detachable unit as an example, or multiple detachable units can be provided. When one detachable unit 500 is provided, it can be provided as an ink droplet wiping unit, or as a low-frequency suction unit described below; it can also be provided as an ink droplet wiping unit first, and then switched to a low-frequency suction unit after the ink droplet wiping unit is detached. When two detachable units (only one is shown in Figure 2 ) are provided, one detachable unit can be provided as an ink droplet wiping unit, and the other as a low-frequency suction unit.

[0065] The application does not limit the structure of the ink drop wiping unit, such as the nozzle wiping structure disclosed in CN111746125A, a nozzle cleaning device and method for inkjet printing, or other nozzle wiping structures.

[0066] In one example, the detection system further includes a low-frequency suction unit, wherein the low-frequency suction unit is arranged on the first movement assembly; the low-frequency suction unit is arranged side by side with the ink drop wiping unit, the ink drop flight observation unit, and the ink drop drop observation unit.

[0067] In this example, the detection system can further include a low-frequency suction unit. The low-frequency suction unit can be arranged side by side to spray ink in a low-frequency manner during the idle time of the offline nozzle detection to avoid long-term non-ink spraying of the nozzle, and the ink in the nozzle is solidified to cause the nozzle to be blocked. The low-frequency suction unit can also be arranged in the offline nozzle detection system as a regular unit, such as stopping the position of the nozzle above the ink drop flight observation unit during the idle time of the offline nozzle detection, and setting the nozzle to spray ink in a low-frequency manner.

[0068] The application does not limit the structure of the low-frequency suction unit, such as the low-frequency suction structure disclosed in CN118789939A, a low-frequency suction module and an inkjet printing system, or other low-frequency suction structures. As shown in Figure 2 As shown in Figure 2 The detachable unit 500 can be provided with a low-frequency suction unit.

[0069] The offline nozzle test detection system in the present application has a simple overall structure, supports offline detection of nozzles, and simultaneously supports ink drop drop observation and ink drop flight observation of nozzles.

[0070] In the description of the present application, it should be understood that the forward direction of "X" in the drawings represents the front, and correspondingly, the reverse direction of "X" represents the rear; the forward direction of "Y" represents the right, and correspondingly, the reverse direction of "Y" represents the left; the forward direction of "Z" represents the upper, and correspondingly, the reverse direction of "Z" represents the lower, and the directions or positional relationships indicated by the terms "X", "Y", "Z" and the like are based on the directions or positional relationships shown in the drawings of the specification, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0071] In the description of the present application, it should be noted that the terms "upper", "lower", and the like are used for indicating the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise explicitly specified and limited, the terms "mount", "connect", "connection" should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0072] It should be noted that in the present application, relational terms such as "first" and "second" and the like are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or equipment including the element.

[0073] The above is only a specific embodiment of the present application, which enables those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features applied herein.

Claims

1. A detection system for a showerhead assembly, comprising: The detection system comprises a base, a mounting frame, a visual camera unit, a nozzle unit, a first motion assembly, a droplet flight observation unit and a droplet drop observation unit; wherein, The mounting frame is arranged on the upper surface of the base; The visual camera unit and the nozzle unit are respectively arranged on the middle cantilever of the mounting frame and located on both sides of the middle cantilever of the mounting frame; The first motion assembly is arranged on the upper surface of the base and located below the middle cantilever of the mounting frame; The droplet flight observation unit and the droplet drop observation unit are arranged on the first motion assembly, so that the first motion assembly drives the droplet flight observation unit and the droplet drop observation unit to move to below the nozzle unit in the first direction and then performs nozzle detection.

2. The detection system of claim 1, wherein, The detection system further comprises a second motion assembly; wherein, The second motion assembly is arranged between the nozzle unit and the mounting frame, so that the second motion assembly drives the nozzle unit to move in the vertical direction.

3. The detection system of claim 1, wherein, The detection system further comprises a third motion assembly; wherein, The third motion assembly is arranged between the droplet flight observation unit and the first motion assembly, so that the third motion assembly drives the droplet flight observation unit to move in the second direction.

4. The detection system of claim 1, wherein, The detection system further comprises a fourth motion assembly; wherein, The fourth motion assembly is arranged between the visual camera unit and the middle cantilever of the mounting frame, so that the fourth motion assembly drives the visual camera unit to move in the second direction.

5. The detection system of claim 1, wherein, The detection system further comprises a rack; wherein, The base is arranged on the rack.

6. The detection system of claim 5, wherein, The detection system further comprises a shell; wherein, The shell is arranged in cooperation with the rack, and the shell is arranged on the rack; so that the base, the mounting frame, the visual camera unit, the nozzle unit, the first motion assembly, the droplet flight observation unit and the droplet drop observation unit are all located inside the shell.

7. The detection system of claim 5, wherein, The detection system further comprises a leveling base; wherein, The leveling base is arranged at the bottom of the rack.

8. The detection system of claim 2, wherein, The second motion assembly comprises a second driving assembly and a nozzle support; wherein, The nozzle unit is arranged on the nozzle support, and the nozzle support is connected with the second driving assembly.

9. The detection system according to any one of claims 1 to 8, characterized in that The detection system further comprises a droplet wiping unit, wherein, The droplet wiping unit is arranged on the first motion assembly; The droplet wiping unit is arranged side by side with the droplet flight observation unit and the droplet drop observation unit.

10. The detection system according to any one of claims 1 to 8, characterized in that The detection system further comprises a low-frequency suction unit, wherein, The low-frequency suction unit is arranged on the first motion assembly; The low-frequency suction unit is arranged side by side with the droplet flight observation unit and the droplet drop observation unit.

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