Nozzle anti-collision device and ink droplet observation device

Abstract

The invention discloses a nozzle anti-collision device and an ink droplet observation device. The nozzle anti-collision device is applied to the ink droplet observation equipment, an ink box in the ink droplet observation equipment is located between a first ink droplet observation unit and a second ink droplet observation unit, and the first ink droplet observation unit and the second ink droplet observation unit are oppositely arranged. A first sensor group is arranged in the length direction of the first ink droplet observation unit, the first ink droplet observation unit is located between two sensors of the first sensor group, and the distance between the center points of the two sensors in the first sensor group is smaller than the length of a spray head of the ink-jet printer; a second sensor group is arranged in the length direction of the second ink droplet observation unit, the second ink droplet observation unit is located between the two sensors of the second sensor group, and the distance between the center points of the two sensors in the second sensor group is smaller than the length of the spray head of the ink-jet printer. The nozzle anti-collision device can reduce loss caused by collision between the ink jet printer nozzle and the ink droplet observation unit.

Description

Technical Field

[0001] The present application relates to the technical field of inkjet printing of display panels, and in particular to a nozzle anti-collision device and an ink droplet observation device. Background Art

[0002] At present, the application of inkjet printing technology in the field of display manufacturing is becoming more and more extensive. In recent years, it has gradually been applied in the fields of flexible devices such as OLED, RFID, thin-film solar cells, wearable flexible devices, PCB, smart skin, etc. In addition, it has been successfully applied to advanced process scenarios such as pixel deposition of OLED panels, precise coating of QLED quantum dot materials, adhesive distribution in MicroLED mass transfer, and transparent conductive line printing of flexible displays.

[0003] At this time, in the process of inkjet printing, real-time observation and control of the flight trajectory of ink droplets is crucial. By accurately monitoring the flight speed, landing accuracy and morphological stability of ink droplets, submicron printing resolution and film uniformity are guaranteed, which plays a decisive role in achieving the color gamut accuracy, brightness consistency and circuit conductivity of the display panel. For example: CN115782404A is an integrated inkjet printing ink droplet observation and collection device and method, which discloses the optimized design of the observation light path and the waste liquid recovery path, ensuring the synchronization of ink droplet observation and waste liquid recovery; at the same time, the specification in the application is attached Figure 3 The normal position of the inkjet printer nozzle during ink droplet observation is disclosed. The inkjet printer nozzle G should be located between two ink droplet observation units.

[0004] However, during the ink droplet observation process, the nozzle may collide with the ink droplet observation unit. The nozzle used in the inkjet printing technology in the display manufacturing field is composed of many micron-level nozzle holes and is expensive. At the same time, once the inkjet printer nozzle collides with the ink droplet observation unit, it often needs to be stopped for repair. In the display manufacturing field, it may cause the entire production line to stop, causing great losses.

[0005] Therefore, a nozzle anti-collision device and an ink droplet observation device are provided. Summary of the invention

[0006] The present application provides a nozzle anti-collision device, which can prevent the nozzle of an inkjet printer from colliding with an ink droplet observation unit, thereby reducing the loss caused by the collision between the nozzle of the inkjet printer and the ink droplet observation unit.

[0007] The present application discloses a nozzle anti-collision device, which is applied to an ink droplet observation device, wherein the ink droplet observation device comprises a first ink droplet observation unit, a second ink droplet observation unit and an ink cartridge, wherein the ink cartridge is located between the first ink droplet observation unit and the second ink droplet observation unit, and the first ink droplet observation unit and the second ink droplet observation unit are arranged relative to each other to facilitate observation of ink droplet flight parameters; the nozzle anti-collision device comprises a first sensor group and a second sensor group; the first sensor group is arranged in the length direction of the first ink droplet observation unit, the first ink droplet observation unit is located between the two sensors of the first sensor group, and the distance between the center points of the two sensors in the first sensor group is less than the length of the inkjet printer nozzle; the second sensor group is arranged in the length direction of the second ink droplet observation unit, the second ink droplet observation unit is located between the two sensors of the second sensor group, and the distance between the center points of the two sensors in the second sensor group is less than the length of the inkjet printer nozzle.

[0008] In the above scheme, the vertical collision prevention problem during ink droplet observation is solved; the inkjet printer nozzle is prevented from colliding with the top surface of the ink droplet observation unit, causing damage to the nozzle. By setting a sensor, it is monitored whether the inkjet printer nozzle appears above the top surface of the ink droplet observation unit; if the inkjet printer nozzle appears above the top surface of the ink droplet observation unit, an early warning is issued, and the sensor sends a signal to the motion controller of the nozzle, and the controller stops the nozzle from descending in the vertical direction, thereby avoiding the nozzle from colliding with the top surface of the ink droplet observation unit.

[0009] In a possible implementation, the nozzle anti-collision device further includes a first sensor mounting bracket and a second sensor mounting bracket; wherein the ink cartridge is located between the second sensor mounting bracket and the first sensor mounting bracket, and the ink cartridge is fastened to both the first sensor mounting bracket and the second sensor mounting bracket.

[0010] In the above scheme, the position of the sensor mounting frame is disclosed, which is tightly connected to the ink cartridge and has a compact structure.

[0011] In a possible embodiment, two threaded holes are respectively provided on the first sensor mounting bracket and the second sensor mounting bracket, and sensors are provided in the threaded holes so that the installation height of the sensors can be adjusted by rotating the sensors so that the detection diameter of the sensors is equal to the width of the first ink droplet observation unit or the second ink droplet observation unit.

[0012] In the above scheme, the connection method between the sensor and the sensor mounting bracket is disclosed. The height of the sensor in the vertical direction can be conveniently adjusted by means of threaded connection; in actual use, the installation height of the sensor can be adjusted so that the maximum detection diameter of the sensor is equal to the width of the ink droplet observation unit, that is, the maximum effective detection diameter of the first sensor group is equal to the width of the first ink droplet observation unit, and the maximum effective detection diameter of the second sensor group is equal to the width of the second ink droplet observation unit. At this time, it is not only convenient to monitor the nozzle above the top surface of the ink droplet observation unit, but also can avoid the problem of the nozzle of the inkjet printer being mismonitored when it is in the correct position (between the two ink droplet observation units), thereby causing the problem of misoperation.

[0013] In a possible embodiment, the nozzle anti-collision device also includes a first ink droplet observation base and a second ink droplet observation base, wherein the first ink droplet observation unit is arranged on the first ink droplet observation base, and the first ink droplet observation base is connected to the first ink droplet observation unit in a detachable manner; the second ink droplet observation unit is arranged on the second ink droplet observation base, and the second ink droplet observation base is connected to the second ink droplet observation unit in a detachable manner.

[0014] The above scheme aims to solve the problem of damage to the inkjet printer nozzle caused by the horizontal collision between the ink droplet observation unit and the inkjet printer nozzle. The ink droplet observation base is detachably connected to the ink droplet observation unit; when the nozzle collides with the ink droplet observation unit in the horizontal direction, the ink droplet observation unit is directly taken away. At this time, the ink droplet observation unit is separated from the ink droplet observation base, thereby avoiding damage to the nozzle caused by the rigid collision between the ink droplet observation unit and the nozzle. At this time, it should be noted that the height of the inkjet printer nozzle extending between the two ink droplet observation units is less than the height of the ink droplet observation unit.

[0015] In a possible embodiment, the second ink droplet observation base is connected to the second ink droplet observation unit in a detachable manner, specifically including: the second ink droplet observation unit is connected to the second ink droplet observation base by magnetic adsorption; wherein a magnetic block is provided in the second ink droplet observation unit, a magnet is provided in the second ink droplet observation base, and the magnetic block and the magnet are adsorbed to each other.

[0016] In the above scheme, it is disclosed that the detachable method is preferably a magnetic adsorption method, and a magnet block is provided in the ink droplet observation unit, and a magnet is provided in the ink droplet observation base.

[0017] In a possible embodiment, the magnet is embedded in the second ink droplet observation base, and the magnet and the second ink droplet observation base form a shallow groove structure; the magnetic block is embedded in the second ink droplet observation unit, and the magnetic block and the second ink droplet observation unit form a convex structure; the shallow groove structure and the convex structure are arranged in coordination to connect the second ink droplet observation base and the second ink droplet observation unit by magnetic adsorption.

[0018] In the above scheme, the ink droplet observation base and the magnet form a shallow groove structure, the magnetic block and the ink droplet observation unit form a convex structure, and the convex structure is inserted into the shallow groove structure like a latch to connect the ink droplet observation unit and the ink droplet observation base. The shallow groove and convex structure design facilitates the separation of the ink droplet observation unit from the ink droplet observation base when the nozzle collides with the ink droplet observation unit.

[0019] In a possible embodiment, a first bolt is provided in the second ink droplet observation unit, and the first bolt is threadedly connected to the magnetic block so that the position of the magnetic block can be adjusted by rotating the first bolt; and / or the second bolt is provided with an external thread, and the second bolt is threadedly connected to the second ink droplet observation base through the external thread, and the second bolt has the magnet embedded therein so that the position of the magnet can be adjusted by rotating the second bolt.

[0020] In the above scheme, it is intended to disclose the movable connection mode between the magnetic block and the ink drop observation unit, and the movable connection mode between the magnet and the ink drop observation platform when the magnetic block is set in the ink drop observation unit and the magnet is set in the ink drop observation base. Generally speaking, it is only necessary to adjust the position of the magnetic block or the magnet to adjust the suction force between the magnetic block and the magnet; of course, it is also possible to adjust the position of the magnetic block and the magnet at the same time to adjust the suction force between the magnetic block and the magnet.

[0021] In a possible embodiment, the magnet is embedded in the second ink droplet observation base, and the magnet and the second ink droplet observation base form a convex structure; the magnetic block is embedded in the second ink droplet observation unit, and the magnetic block and the second ink droplet observation unit form a shallow groove structure; the shallow groove structure and the convex structure are arranged in coordination to connect the second ink droplet observation base and the second ink droplet observation unit by magnetic adsorption.

[0022] In the above scheme, a magnet adsorption structure is disclosed, which still adopts the shallow groove type and convex type structure design. Among them, the ink droplet observation base and the magnet form a convex type structure, the magnetic suction block and the ink droplet observation unit form a shallow groove type structure, and the convex type structure is inserted into the shallow groove type structure like a latch to connect the ink droplet observation unit and the ink droplet observation base.

[0023] In a possible embodiment, the second ink droplet observation base is connected to the second ink droplet observation unit in a detachable manner, specifically including: the second ink droplet observation unit is connected to the second ink droplet observation base by magnetic adsorption; wherein a magnet is provided in the second ink droplet observation unit, a magnetic block is provided in the second ink droplet observation base, and the magnetic block and the magnet are adsorbed to each other; or a first magnet is provided in the second ink droplet observation unit, a second magnet is provided in the second ink droplet observation base, and the first magnet and the second magnet are adsorbed to each other.

[0024] In the above scheme, it is disclosed that the detachable method is preferably a magnetic adsorption method, and a magnet is set in the ink droplet observation unit and a magnet block is set in the ink droplet observation base; or both the ink droplet observation unit and the ink droplet observation base are set as magnets.

[0025] A second aspect of the present application discloses an ink droplet observation device, which includes a nozzle anti-collision device as described in any one of the above.

[0026] This application has the following technical effects:

[0027] Solve the anti-collision problem in the vertical direction during ink droplet observation. By setting up a sensor, monitor whether an inkjet printer nozzle appears above the top surface of the ink droplet observation unit; if an inkjet printer nozzle appears above the top surface of the ink droplet observation unit, an early warning is issued, and the sensor sends a signal to the motion controller of the nozzle, and the controller stops the nozzle from descending in the vertical direction, thereby avoiding the nozzle from colliding with the top surface of the ink droplet observation unit;

[0028] Threaded connection between the sensor and the sensor mounting bracket. The threaded connection makes it easy to adjust the height of the sensor in the vertical direction; in actual use, the installation height of the sensor can be adjusted so that the maximum detection diameter of the sensor is equal to the width of the ink droplet observation unit, that is, the maximum effective detection diameter of the first sensor group is equal to the width of the first ink droplet observation unit, and the maximum effective detection diameter of the second sensor group is equal to the width of the second ink droplet observation unit. At this point, it is not only convenient to monitor the nozzle above the top surface of the ink droplet observation unit, but also can avoid the problem of the inkjet printer's nozzle being mismonitored when it is in the correct position (between the two ink droplet observation units), thereby causing the problem of false shutdown;

[0029] Solve the problem of ink droplet observation unit and inkjet printer nozzle being damaged due to collision in horizontal direction. The ink droplet observation base is connected to the ink droplet observation unit in a detachable manner; when the nozzle and the ink droplet observation unit collide in horizontal direction, the ink droplet observation unit is directly taken away, and the ink droplet observation unit is separated from the ink droplet observation base, thus avoiding the damage to the nozzle caused by the rigid collision between the ink droplet observation unit and the nozzle;

[0030] The convex structure is inserted into the shallow groove structure like a latch to connect the ink droplet observation unit and the ink droplet observation base. The shallow groove and convex structure design facilitates the separation of the ink droplet observation unit and the ink droplet observation base when the nozzle collides with the ink droplet observation unit;

[0031] When a magnetic block is provided in the ink droplet observation unit and a magnet is provided in the ink droplet observation platform, an active connection mode between the magnetic block and the ink droplet observation unit and an active connection mode between the magnet and the ink droplet observation platform are provided. Generally speaking, the suction force between the magnetic block and the magnet can be adjusted by only adjusting the position of the magnetic block or the magnet; of course, the position of the magnetic block and the magnet can also be adjusted at the same time to adjust the suction force between the magnetic block and the magnet. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the structure of a nozzle anti-collision device disclosed in this application specification;

[0033] Figure 2 This application specification discloses a schematic diagram of the structure of another nozzle anti-collision device;

[0034] Figure 3 This application specification discloses a schematic diagram of a top view structure of a nozzle anti-collision device;

[0035] Figure 4 A schematic diagram of the side structure of a nozzle anti-collision device is disclosed in this application specification;

[0036] Figure 5 This application specification discloses a schematic diagram of the structure of an ink droplet observation component in a nozzle anti-collision device;

[0037] Figure 6 This application specification discloses a schematic diagram of the internal structure of an ink droplet observation component in a nozzle anti-collision device;

[0038] Figure 7 This application specification discloses a schematic diagram of the internal structure of an ink droplet observation component in another nozzle anti-collision device;

[0039] Figure 8 A schematic cross-sectional structure diagram of an ink droplet observation assembly of a nozzle anti-collision device disclosed in this application specification;

[0040] Fig. 9 This is a schematic diagram of the ink droplet observation principle in a nozzle anti-collision device disclosed in this application specification.

[0041] In the above drawings: sensor 100, ink cartridge 200, first ink droplet observation unit 300, first ink droplet observation base 400, optical path schematic line 500, sensor detection schematic line 600, second ink droplet observation unit 700, second ink droplet observation base 800, first sensor mounting bracket 901, second sensor mounting bracket 902, magnetic block 701, first bolt 702, cover plate 703, magnet 801, second bolt 802. DETAILED DESCRIPTION

[0042] In order to enable technicians in this field to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments.

[0043] In the description of the embodiments of the present application, words such as "for example" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "for example" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "for example" or "for example" is intended to present related concepts in a specific way.

[0044] The application scenario of this manual is: when the nozzle used in the inkjet printing technology in the display manufacturing field collides with the ink droplet observation unit, it often causes damage to the nozzle; and the nozzle is expensive, and the repair of the damaged nozzle may cause the entire display production line to shut down, causing great losses.

[0045] Furthermore, the movement path of the nozzle during the ink droplet flight observation process is often executed by a program, and the collision between the ink droplet observation unit and the nozzle is a low-probability event in itself; however, ink droplet flight observation is a complex working condition, and the inkjet printer nozzle and the ink droplet observation unit may collide due to various reasons. As can be seen from the above, once a collision occurs, it will cause great losses.

[0046] like Figure 3 As shown, the length direction referred to in this specification is the X-axis direction, the width direction referred to in this specification is the Y-axis direction, and the height direction is the Z-axis direction ( Fig. 9 The anti-collision device based on ink droplet observation in this specification can be divided into two directions of anti-collision, one is the vertical direction (such as Fig. 9 The Z direction in the figure) and the horizontal direction. Figure 3For the plane where XY is shown, an anti-collision solution needs to be provided between the inkjet printer's nozzle and the ink droplet observation unit 300 and the ink droplet observation unit 700 in the horizontal direction (i.e., the sides of the ink droplet observation unit 300 and the ink droplet observation unit 700); the vertical direction is the direction perpendicular to XY, and an anti-collision solution needs to be provided between the inkjet printer's nozzle and the ink droplet observation unit 300 and the ink droplet observation unit 700 in the vertical direction (i.e., the top surfaces of the ink droplet observation unit 300 and the ink droplet observation unit 700).

[0047] The model and type of the sensor are not limited in this specification, and the ink droplet observation unit can be integrally formed with the ink cartridge, or can be fastened to the ink cartridge, and there is no limitation on this. In addition, in order to further prevent collision, the ink droplet observation unit can be made of non-technical materials.

[0048] The specification discloses a nozzle anti-collision device. The nozzle anti-collision device is applied to an ink droplet observation device, the ink droplet observation device comprises a first ink droplet observation unit 300, a second ink droplet observation unit 700 and an ink cartridge 200, wherein the ink cartridge 200 is located between the first ink droplet observation unit 300 and the second ink droplet observation unit 700, and the first ink droplet observation unit 300 and the second ink droplet observation unit 700 are arranged relative to each other to facilitate observation of ink droplet flight parameters; the nozzle anti-collision device comprises a first sensor group and a second sensor group; the first sensor group is arranged in the length direction of the first ink droplet observation unit 300, the first ink droplet observation unit 700 is located between the two sensors of the first sensor group, and the distance between the center points of the two sensors in the first sensor group is less than the length of the inkjet printer nozzle; the second sensor group is arranged in the length direction of the second ink droplet observation unit, the second ink droplet observation unit is located between the two sensors of the second sensor group, and the distance between the center points of the two sensors in the second sensor group is less than the length of the inkjet printer nozzle.

[0049] At this time, the inkjet printer nozzle is prevented from colliding with the top surface of the ink droplet observation unit, which may cause damage to the nozzle. By setting a sensor, it is monitored whether the inkjet printer nozzle appears above the top surface of the ink droplet observation unit; if the inkjet printer nozzle appears above the top surface of the ink droplet observation unit, an early warning is issued, and the sensor sends a signal to the motion controller of the nozzle, and the controller stops the nozzle from descending in the vertical direction, thereby avoiding the nozzle from colliding with the top surface of the ink droplet observation unit.

[0050] like Figure 3 shown. Figure 3 The top surfaces of the first ink droplet observation unit 300 and the second ink droplet observation unit 700 shown in FIG. 1 are each provided with two sensors 100 (such as Figure 1The first ink droplet observation unit 300 and the second ink droplet observation unit 700 are arranged opposite to each other, and the ... Figure 1 ,like Figure 2 and Figure 5 As shown in FIG. 1 , the observation optical path is as described in CN115782404A ), and the parameters of the ink droplets ejected by the nozzle are observed. The first observation unit 300 is located between a sensor in each of the first sensor mounting frame 901 and the second sensor mounting frame 902 , and the second observation unit 700 is similar.

[0051] In the above, the number of sensors of the first sensor group and the second sensor group is preferably 2. In actual use, the number can also be increased or decreased. When it is decreased, it is considered that when observing ink droplets of inkjet printers in the field of display manufacturing, the nozzle is in the motion module (such as Fig. 9 As shown in the schematic diagram of the vertical descent, the deviation in the X-axis direction is a very rare event; the deviation in the Y-axis direction often occurs, causing the nozzle to collide with the ink droplet observation unit. Figure 3 As shown, only one sensor can be installed on each of the first sensor mounting frame 901 and the second sensor mounting frame 902. However, installing two sensors on each of the first sensor mounting frame 901 and the second sensor mounting frame 902 can further ensure the safety of the nozzle and further avoid collision with the top surface of the ink droplet observation unit (i.e., the first ink droplet observation unit and the second ink droplet observation unit) in the vertical direction.

[0052] In addition, the inkjet printer nozzle has a certain length. The distance between the center points of the two sensors in the first sensor group and the second sensor group (referred to as the sensor group) is set to be smaller than the length of the inkjet printer nozzle in order to ensure that once the nozzle deviates in the X-axis direction, it will be detected by the sensor. In addition, the maximum effective detection diameter of any sensor in the sensor group is required to be equal to the width of the ink droplet observation unit in the Y-axis direction to further ensure that when the nozzle is descending, once it deviates in the Y-axis direction, it can be detected by the sensor. Figure 3 As shown, the sensor detection schematic line 600 is a schematic diagram of the maximum effective detection circle of the sensor. At this time, the maximum effective detection diameter D is equal to the width W of the ink droplet observation unit in the Y-axis direction.

[0053] Further, the nozzle may be mounted on a motion assembly (such as Fig. 9As shown) or special-shaped nozzles (the ejection surface of the nozzle and the mounting base of the nozzle are not on the same XY axis plane), or other installation situations. For the convenience of description, the nozzle is installed on the moving component as an example. The sensor may detect the moving component first but not the nozzle (the number of nozzle holes in the nozzle of the inkjet printer determines the area of ​​the nozzle detection surface; generally speaking, the number of nozzle holes in the nozzle is large, and the area of ​​the nozzle detection surface is large; when the number of nozzle holes is small (the nozzle at this time can also be called a "spray needle"), the nozzle detection surface is small, and the sensor may monitor the installation surface of the nozzle but not the nozzle detection surface); at this time, the nozzle may still collide with the top surface of the ink droplet observation unit. In order to avoid this collision problem, it is necessary to reserve a sufficient safety distance; that is, Figure 4 As shown in FIG. 1 , the distance between the maximum effective detection surface of the sensor and the top surface of the ink droplet observation unit is the safety distance H, which is much larger than the height h of the nozzle in the Z-axis direction (such as Fig. 9 As shown, h is the distance between the nozzle detection surface and the nozzle installation surface). At this time, no matter the sensor detects the nozzle or the motion component, it will send a signal to the controller of the motion component, and the controller will stop the downward movement of the inkjet printer nozzle on the Z axis and issue a buzzer warning; of course, it can also send a signal to the controller of the ink droplet observation device at the same time, so that the ink cartridge and the ink droplet observation component (ink droplet observation unit and ink droplet observation base) can be lowered to avoid.

[0054] In one example, the nozzle anti-collision device further includes a first sensor mounting bracket and a second sensor mounting bracket; wherein the ink cartridge is located between the second sensor mounting bracket and the first sensor mounting bracket, and the ink cartridge is fastened to both the first sensor mounting bracket and the second sensor mounting bracket.

[0055] like Figure 3 and Figure 4 As shown, the ink cartridge and the sensor mounting bracket can be fastened together by screws.

[0056] In one example, two threaded holes are respectively set on the first sensor mounting bracket and the second sensor mounting bracket, and sensors are set in the threaded holes so that the installation height of the sensor can be adjusted by rotating the sensor so that the detection diameter of the sensor is equal to the width of the first ink droplet observation unit or the second ink droplet observation unit.

[0057] At this time, the height of the sensor in the vertical direction (i.e., the Z-axis direction) can be conveniently adjusted by means of threaded connection; in actual use, the installation height of the sensor can be adjusted so that the maximum detection diameter of the sensor is equal to the width of the ink droplet observation unit, that is, the maximum effective detection diameter of the first sensor group is equal to the width of the first ink droplet observation unit, and the maximum effective detection diameter of the second sensor group is equal to the width of the second ink droplet observation unit. At this time, it is not only convenient to monitor the nozzle above the top surface of the ink droplet observation unit, but also can avoid the problem of the inkjet printer nozzle being mis-monitored when it is in the correct position (between the two ink droplet observation units), thereby causing the problem of mis-stopping.

[0058] In one example, the nozzle anti-collision device also includes a first ink droplet observation base 400 and a second ink droplet observation base 800, wherein a first ink droplet observation unit 300 is arranged on the first ink droplet observation base 400, and the first ink droplet observation base 400 is connected to the first ink droplet observation unit 300 in a detachable manner; a second ink droplet observation unit 700 is arranged on the second ink droplet observation base 800, and the second ink droplet observation base 800 is connected to the second ink droplet observation unit 700 in a detachable manner.

[0059] At this time, the ink droplet observation base is detachably connected to the ink droplet observation unit (such as Figure 5 When the inkjet printer prints a second ink droplet observation unit 700 and a second ink droplet observation base 800, the ink droplet observation unit is directly taken away when the inkjet printer prints a second ink droplet observation unit 700 and a second ink droplet observation base 800; when ...; when the inkjet printer prints a second ink droplet observation unit 700 and a second ink droplet observation base 800; Fig. 9 shown).

[0060] This manual mainly describes the detachable method by means of magnetic attraction. The advantage of magnetic attraction is that it is not only detachable, but also allows the nozzle to "softly" collide with the ink droplet observation unit. At the same time, it is also convenient to adjust the size of the magnetic attraction force, which is convenient for further adjusting the strength of the "soft" collision. In addition, if the nozzle collides with the ink droplet observation unit, it is also convenient for maintenance.

[0061] In the magnetic attraction method, a magnetic attraction block can be set in the ink droplet observation unit, and a magnet can be set in the ink droplet observation base (i.e., the first ink droplet observation base and the second ink droplet observation base); or a magnet can be set in the ink droplet observation unit, and a magnetic attraction block can be set in the ink droplet observation base; or magnets can be set in both the ink droplet observation unit and the ink droplet observation base.

[0062] For example, in one example, the second ink droplet observation base is connected to the second ink droplet observation unit in a detachable manner, specifically including: the second ink droplet observation unit is connected to the second ink droplet observation base by magnetic adsorption; wherein a magnetic block is provided in the second ink droplet observation unit, a magnet is provided in the second ink droplet observation base, and the magnetic block and the magnet are adsorbed to each other.

[0063] For example, in one example, the second ink droplet observation base is connected to the second ink droplet observation unit in a detachable manner, specifically including: the second ink droplet observation unit and the second ink droplet observation base are connected by magnetic adsorption; wherein a magnet is arranged in the second ink droplet observation unit, a magnetic block is arranged in the second ink droplet observation base, and the magnetic block and the magnet are adsorbed to each other; or a first magnet is arranged in the second ink droplet observation unit, a second magnet is arranged in the second ink droplet observation base, and the first magnet and the second magnet are adsorbed to each other.

[0064] For the convenience of further description, this manual further explains by setting a magnetic suction block in the ink droplet observation unit and setting a magnet in the ink droplet observation base. At this time, on the basis of the magnetic suction method, the positioning problem of the ink droplet observation unit also needs to be considered; that is, the positions of the ink droplet observation unit and the ink droplet observation base should be relatively fixed and cannot be moved arbitrarily. Arbitrary movement will also cause accidental collision between the nozzle and the ink droplet observation unit. Therefore, two sets of magnetic suction are set between the ink droplet observation base and the ink droplet observation unit. In addition, one side of the magnetic suction method is set to a convex structure, and the other side of the magnetic suction method is set to a shallow groove structure, and the convex structure acts as a latch; not only is it convenient for the positioning of the ink droplet observation unit and the ink droplet observation base, but the shallow groove structure design can also enable the ink droplet observation unit to be smoothly separated from the ink droplet observation base when the nozzle collides with the ink droplet observation unit.

[0065] At this time, the ink droplet observation unit and the magnetic block can be set to a convex or shallow groove structure, and the corresponding ink droplet observation base can be set to a shallow groove or convex structure.

[0066] For example, in one example, a magnet is embedded in a second ink droplet observation base, and the magnet and the second ink droplet observation base form a shallow groove structure; a magnetic block is embedded in a second ink droplet observation unit, and the magnetic block and the second ink droplet observation unit form a convex structure; the shallow groove structure and the convex structure are arranged in coordination to connect the second ink droplet observation base and the second ink droplet observation unit by magnetic adsorption.

[0067] For example, in one example, a magnet is embedded in a second ink droplet observation base, and the magnet and the second ink droplet observation base form a protruding structure; a magnetic block is embedded in a second ink droplet observation unit, and the magnetic block and the second ink droplet observation unit form a shallow groove structure; the shallow groove structure and the protruding structure are arranged in coordination to connect the second ink droplet observation base and the second ink droplet observation unit by magnetic adsorption.

[0068] For further convenience of description, in the following examples of this specification, the ink droplet observation unit and the magnetic block constitute a convex structure, and the ink droplet observation base and the magnet constitute a shallow groove structure. Figure 6-8 As shown. Figure 7 and Figure 8 As shown, the ink droplet observation unit also includes a cover plate 703; the above-mentioned nozzle collides with the top surface of the ink droplet observation unit, that is, the nozzle collides with the upper surface of the cover plate 703, and two pins are set on the lower surface of the cover plate 703 to connect with the main body of the ink droplet observation unit.

[0069] In one example, a first bolt 702 is provided in the second ink droplet observation unit 700, and the first bolt 702 is threadedly connected to the magnetic block 701 so that the position of the magnetic block 701 can be adjusted by rotating the first bolt 702; and / or the second bolt 802 is provided with an external thread, and the second bolt 802 is threadedly connected to the second ink droplet observation base 800 through the external thread, and the second bolt has an embedded magnet 801 so that the position of the magnet can be adjusted by rotating the second bolt.

[0070] Generally speaking, you only need to adjust the position of the magnetic block or the magnet to adjust the suction force between the magnetic block and the magnet. Of course, you can also adjust the position of the magnetic block and the magnet at the same time to adjust the suction force between the magnetic block and the magnet. The suction force should be such that when there is no collision between the ink droplet observation unit and the ink droplet observation base, the magnetic connection between the ink droplet observation base and the ink droplet observation unit should be stable. When a collision occurs, the ink droplet observation base and the ink droplet observation unit should be able to separate smoothly without causing damage to the nozzle. Figure 8 As shown, the magnetic block 701 and the magnet 801 are in a non-contact state, but they may also be in direct contact; and the diameter of the magnetic block 701 may be the same as or different from the diameter of the magnet 801.

[0071] In this specification, the shape of the magnet and the magnetic block is preferably cylindrical. When the cylindrical magnet and the magnetic block are matched together, the attraction per unit area of ​​the cylindrical shape is greater than that of a cube or rectangular magnet or magnetic block; however, this specification does not limit the shape of the magnet or magnetic block.

[0072] A second aspect of the present application discloses an ink droplet observation device, which includes a nozzle anti-collision device as described above.

[0073] In the description of this application, it should be understood that the orientation or position relationship indicated by the terms "X", "Y", "Z", etc. in the drawings is based on the orientation or position relationship shown in the drawings of the specification, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this 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.

[0074] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0075] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0076] The above is only a specific implementation of the present application, so that those skilled in the art can 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 the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A nozzle anti-collision device, characterized in that: The nozzle anti-collision device is applied to an ink droplet observation device, the ink droplet observation device comprises a first ink droplet observation unit, a second ink droplet observation unit and an ink cartridge, the ink cartridge is located between the first ink droplet observation unit and the second ink droplet observation unit, the first ink droplet observation unit and the second ink droplet observation unit are arranged opposite to each other, so as to observe the ink droplet flight parameters; The nozzle anti-collision device includes a first sensor group and a second sensor group; wherein, A first sensor group is arranged in the length direction of the first ink droplet observation unit, the first ink droplet observation unit is located between two sensors of the first sensor group, and the distance between the center points of the two sensors in the first sensor group is less than the length of the inkjet printer nozzle; A second sensor group is arranged in the length direction of the second ink droplet observation unit, the second ink droplet observation unit is located between two sensors of the second sensor group, and the distance between the center points of the two sensors in the second sensor group is less than the length of the inkjet printer nozzle.

2. The nozzle anti-collision device according to claim 1, characterized in that: The nozzle anti-collision device also includes a first sensor mounting bracket and a second sensor mounting bracket; wherein, The ink cartridge is located between the second sensor mounting frame and the first sensor mounting frame, and the ink cartridge is firmly connected to both the first sensor mounting frame and the second sensor mounting frame.

3. The nozzle anti-collision device according to claim 2, characterized in that: Two threaded holes are respectively arranged on the first sensor mounting bracket and the second sensor mounting bracket, and sensors are arranged in the threaded holes so that the installation height of the sensors can be adjusted by rotating the sensors so that the detection diameter of the sensors is equal to the width of the first ink droplet observation unit or the second ink droplet observation unit.

4. The nozzle anti-collision device according to claim 1, characterized in that: The nozzle anti-collision device further includes a first ink droplet observation base and a second ink droplet observation base, wherein: The first ink droplet observation unit is arranged on the first ink droplet observation base, and the first ink droplet observation base is detachably connected to the first ink droplet observation unit; The second ink droplet observation unit is arranged on the second ink droplet observation base, and the second ink droplet observation base is detachably connected to the second ink droplet observation unit.

5. The nozzle anti-collision device according to claim 4, characterized in that: The second ink droplet observation base is detachably connected to the second ink droplet observation unit, and specifically includes: The second ink droplet observation unit is connected to the second ink droplet observation base by means of magnetic adsorption; wherein a magnetic adsorption block is arranged in the second ink droplet observation unit, a magnet is arranged in the second ink droplet observation base, and the magnetic adsorption block and the magnet are adsorbed to each other.

6. The nozzle anti-collision device according to claim 5, characterized in that: The magnet is embedded in the second ink droplet observation base, and the magnet and the second ink droplet observation base form a shallow groove structure; The magnetic block is embedded in the second ink droplet observation unit, and the magnetic block and the second ink droplet observation unit form a convex structure; The shallow groove structure and the protrusion structure are arranged in cooperation with each other to connect the second ink droplet observation base with the second ink droplet observation unit by means of magnetic adsorption.

7. The nozzle anti-collision device according to any one of claims 4 to 6, characterized in that: A first bolt is provided in the second ink droplet observation unit, and the first bolt is connected to the magnetic block through a thread, so that the position of the magnetic block can be adjusted by rotating the first bolt; and / or The second bolt is provided with an external thread, and the second bolt is threadably connected to the second ink droplet observation base via the external thread, and the second bolt is embedded with the magnet so that the position of the magnet can be adjusted by rotating the second bolt.

8. The nozzle anti-collision device according to claim 5, characterized in that: The magnet is embedded in the second ink droplet observation base, and the magnet and the second ink droplet observation base form a convex structure; The magnetic block is embedded in the second ink droplet observation unit, and the magnetic block and the second ink droplet observation unit form a shallow groove structure; The shallow groove structure and the protrusion structure are arranged in cooperation with each other to connect the second ink droplet observation base with the second ink droplet observation unit by means of magnetic adsorption.

9. The nozzle anti-collision device according to claim 4, characterized in that: The second ink droplet observation base is detachably connected to the second ink droplet observation unit, and specifically includes: The second ink droplet observation unit is connected to the second ink droplet observation base by means of magnetic adsorption; wherein, A magnet is arranged in the second ink droplet observation unit, a magnetic block is arranged in the second ink droplet observation base, and the magnetic block and the magnet are attracted to each other; or a first magnet is arranged in the second ink droplet observation unit, a second magnet is arranged in the second ink droplet observation base, and the first magnet and the second magnet are attracted to each other.

10. An ink droplet observation device, characterized in that: The ink droplet observation device includes the nozzle anti-collision device as described in any one of claims 1-9.

Images