Nozzle cleaning device and printing system

Abstract

The utility model relates to the technical field of printing equipment, in particular to a nozzle cleaning device and a printing system.The nozzle cleaning device is characterized in that a feeding shaft, a receiving shaft and a floating roller are all parallel to the first direction, and the receiving shaft and the floating roller are both located below a wiping strip unit; in the second direction, the collecting shaft and the floating roller are located on the two opposite sides of the wiping strip unit, the floating roller is located below the discharging shaft, a sliding groove moving in the vertical direction is formed in the shaft support, and the floating roller is in sliding fit with the sliding groove in the vertical direction. The driving assembly is used for driving the discharging shaft and the receiving shaft to rotate. The purpose of the utility model is to provide the nozzle cleaning device and the printing system in order to solve at least one technical problem related in the prior art.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of printing equipment, in particular to a nozzle cleaning device and a printing system. BACKGROUND

[0002] An inkjet printer generally comprises a print head having a plurality of nozzles, ink is ejected from the nozzles to a paper or other object to form a pattern, ink is prone to form residues at the nozzles during printing, and the dried ink is prone to block the nozzles, which adversely affects the printing quality, therefore, a device for wiping the nozzles of a printer needs to be provided. CONTENT OF THE UTILITY MODEL

[0003] The present application aims to solve at least one technical problem involved in the background art, and provides a nozzle cleaning device and a printing system.

[0004] In order to achieve the above-mentioned purpose, the present application adopts the following technical solution:

[0005] One aspect of the present application provides a nozzle cleaning device, comprising a wiping assembly and a driving assembly, the wiping assembly comprises a shaft support, a material feeding shaft, a material collecting shaft, a floating roller and a wiping strip unit which are all mounted on the shaft support and are arranged horizontally, the material feeding shaft, the material collecting shaft and the floating roller are all parallel to a first direction, the material collecting shaft and the floating roller are both located below the wiping strip unit, the material collecting shaft and the floating roller are located on opposite sides of the wiping strip unit in a second direction, the floating roller is located below the material feeding shaft, a sliding groove which moves in a vertical direction is formed on the shaft support, the floating roller and the sliding groove slide in the vertical direction, the driving assembly is used to drive the material feeding shaft and the material collecting shaft to rotate respectively, the first direction is parallel to the axial direction of the material feeding shaft, and the second direction is perpendicular to the first direction and parallel to a horizontal plane.

[0006] Optionally, the material feeding shaft is located below the wiping assembly, and the material feeding shaft is located between the material collecting shaft and the floating roller in the second direction.

[0007] The technical solution has the beneficial effects that the wiping assembly structure is more compact, and the wiping assembly occupies a relatively small space.

[0008] Optionally, the wiping assembly further comprises a first guide roller and a second guide roller which are both fixed on the shaft support, the first guide roller and the second guide roller are both parallel to the first direction, the first guide roller and the second guide roller are correspondingly arranged on both sides of the wiping strip unit in the second direction, and the distance between the first guide roller and the second guide roller in the second direction is greater than the distance between the material collecting shaft and the floating roller.

[0009] The beneficial effects of the technical solution are that the first guide roller and the second guide roller arranged on both sides of the wiping strip unit can not only guide the wiping paper, but also tension the wiping paper, so that the wiping paper is not easy to curl when wiping the nozzle, thereby obtaining a better nozzle cleaning effect.

[0010] Optionally, the wiping assembly further comprises an upper dead point limit switch and a lower dead point limit switch, both of which are mounted on the shaft support, the upper dead point limit switch is located above the lower dead point limit switch, the upper dead point limit switch is used to contact the floating roller to stop the rotation of the take-up shaft, and the lower dead point limit switch is used to contact the floating roller to stop the rotation of the pay-off shaft.

[0011] The beneficial effects of the technical solution are that the take-up and pay-off of the wiping paper can be automatically controlled, the automation degree of the nozzle cleaning device is improved, and the length of the wiping paper used to wipe the nozzle is equal each time through the arrangement of the upper dead point limit switch and the lower dead point limit switch, thereby ensuring stable wiping effect.

[0012] Optionally, the nozzle cleaning device provided by the present application further comprises a fixed base assembly, the fixed base assembly comprises a drive member support, the drive assembly comprises a pay-off drive member and a take-up drive member, both of which are mounted on the drive member support, the pay-off drive member is used to detachably connect with the pay-off shaft, and the take-up drive member is used to detachably connect with the take-up shaft.

[0013] The beneficial effects of the technical solution are that the wiping assembly and the drive assembly are easy to separate and install, thereby facilitating the maintenance and replacement of the components and the replacement of the wiping paper roll.

[0014] Optionally, the nozzle cleaning device further comprises a mounting base assembly, the mounting base assembly comprises a wiping support plate, a mounting base, a linear track and a moving drive member, the linear track and the drive member support are both fixed to the wiping support plate, the linear track extends in the first direction, one end of the linear track is arranged close to the drive member support, the mounting base is mounted on the linear track, the wiping assembly is fixed to the mounting base, and the moving drive member is used to drive the mounting base to move along the linear track in the first direction.

[0015] The beneficial effects of the technical scheme are that when the moving driving member drives the mounting base and the wiping assembly on the mounting base to move to the end of the straight rail far away from the driving member support, the wiping paper roll on the wiping assembly can be installed or replaced, when the moving driving member drives the mounting base and the wiping assembly on the mounting base to move to the driving member support, the pay-off shaft is connected with the pay-off driving member, and the take-up shaft is connected with the take-up driving member, so that the pay-off driving member and the take-up driving member can be started to wipe and clean the nozzle.

[0016] Optionally, the fixed base assembly further comprises a buffer, the buffer is installed at the top end of the driving member support, the buffer protrudes from the side of the driving member support facing the wiping assembly in the first direction, and the buffer is used to abut against the shaft support.

[0017] The beneficial effects of the technical scheme are that when the wiping assembly is driven by the moving driving member to move to the position of the driving member support, the buffer is first collided, instead of the driving member support, the pay-off driving member or the take-up driving member, so that the damage of the take-up shaft, the pay-off shaft, the pay-off driving member and / or the take-up driving member caused by the above collision is avoided.

[0018] Optionally, the pay-off shaft and the pay-off driving member are connected through a magnet structure, and / or the take-up shaft and the take-up driving member are connected through a magnet structure.

[0019] Optionally, the nozzle cleaning device provided in the application further comprises a nozzle surface observation camera assembly, the nozzle surface observation camera assembly is arranged close to the wiping assembly, and the nozzle surface observation camera assembly is located below the wiping strip unit.

[0020] The beneficial effects of the technical scheme are that when the nozzle is wiped by the wiping paper on the wiping assembly and then moves through the nozzle surface observation camera assembly, the nozzle surface observation camera assembly can collect the nozzle image, and then it can be judged whether the nozzle is wiped clean, the judgment can be completed by the staff or by the controller.

[0021] Another aspect of the application provides a printing system comprising the nozzle cleaning device provided in the application.

[0022] The technical scheme provided in the application can achieve at least one of the following beneficial effects:

[0023] The nozzle cleaning device and the printing system provided by the application, in use, wrap the wiping paper roll on the unwinding shaft, wrap one end of the wiping paper roll around the floating roller from bottom to top and around the wiping strip unit from top to bottom in turn, and finally fix it on the winding shaft. The driving assembly drives the unwinding shaft to rotate and unwind the wiping paper. In this process, the floating roller gradually moves down under the action of gravity as the unwinding increases. The floating roller stops unwinding when it moves down to the preset lower limit. The nozzle to be cleaned is moved to the corresponding position on the wiping paper above the wiping strip unit. The wiping of the nozzle is completed by moving from one side of the wiping paper to the other side. Then, the driving assembly drives the winding shaft to rotate. In the winding process, the floating roller gradually moves up. The part of the wiping paper above the wiping strip unit that has been wiped by the nozzle gradually moves out of the wiping strip unit. The floating roller stops winding when it moves to the preset upper limit. The part of the wiping paper above the wiping strip unit that is newly arranged will be used for cleaning the nozzle next time. In this way, the nozzle cleaning device provided by the application can clean the nozzle and reduce the adverse effects on the printing quality.

[0024] The additional technical features of the application and their advantages will be more apparent in the following description or can be understood through the specific practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the specific embodiments of the application, the following will briefly introduce the drawings needed to be used in the description of the specific embodiments. Obviously, the drawings in the following description are some embodiments of the application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0026] Figure 1 Part of the perspective structural schematic diagram of an embodiment of the nozzle cleaning device provided by the application;

[0027] Figure 2 Part of the perspective structural schematic diagram of an embodiment of the nozzle cleaning device provided by the application;

[0028] Figure 3 The perspective structural schematic diagram of an embodiment of the wiping assembly installed on the mounting base provided by the application;

[0029] Figure 4 Part of the perspective structural schematic diagram of an embodiment of the nozzle cleaning device provided by the application;

[0030] Figure 5 Part of the perspective structural schematic diagram of an embodiment of the nozzle surface observation camera assembly provided by the application;

[0031] Figure 6 Part of the perspective structural schematic diagram of one embodiment of the spray head cleaning device provided by the embodiment of the present application;

[0032] Figure 7 The top view structural schematic diagram of one embodiment of the wiping strip unit provided by the embodiment of the present application;

[0033] Figure 8 The perspective structural schematic diagram of one embodiment of the wiping sensor installed on the driving member support provided by the embodiment of the present application.

[0034] Reference signs:

[0035] 01, wiping assembly; 02, mounting base assembly;

[0036] 03, fixed base assembly; 04, driving assembly;

[0037] 05, mounting base; 06, shaft support;

[0038] 07, wiping strip unit; 08, buffer;

[0039] 09, second guide roller; 10, driving member support;

[0040] 11, material collecting shaft; 12, wiping support plate;

[0041] 13, wiping sensor; 14, material feeding shaft;

[0042] 15, first guide roller; 16, floating roller;

[0043] 17, moving driving member; 18, straight rail;

[0044] 19, material feeding driving member; 20, material collecting driving member;

[0045] 21, spray head surface observation camera assembly; 22, camera body;

[0046] 23, adjusting member; 24, camera mounting plate;

[0047] 25, permanent magnet; 26, wiping strip;

[0048] 27, wiping strip fixing plate; 100, wiping paper;

[0049] 200, wiping paper roll. DETAILED DESCRIPTION

[0050] The technical solutions of the present application will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are some of the embodiments of the present application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0051] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate 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 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. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0052] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside 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.

[0053] As shown in Figures 1 to 8 An aspect of the present application provides a nozzle cleaning device, which comprises a wiping assembly 01 and a driving assembly 04, the wiping assembly 01 comprises a shaft support 06, and a material feeding shaft 14, a material collecting shaft 11, a floating roller 16 and a wiping strip unit 07 which are all mounted on the shaft support 06 and are horizontally arranged, the material feeding shaft 14, the material collecting shaft 11 and the floating roller 16 are all parallel to a first direction, the material collecting shaft 11 and the floating roller 16 are both located below the wiping strip unit 07, the material collecting shaft 11 and the floating roller 16 are located on opposite sides of the wiping strip unit 07 in a second direction, the floating roller 16 is located below the material feeding shaft 14, a sliding groove which moves in a vertical direction is formed on the shaft support 06, the floating roller 16 and the sliding groove slide in the vertical direction, the driving assembly 04 is used for driving the material feeding shaft 14 and the material collecting shaft 11 to rotate respectively, the first direction is parallel to the axial direction of the material feeding shaft 14, and the second direction is perpendicular to the first direction and parallel to a horizontal plane.

[0054] In the embodiment of the present application, preferably, the wiping strip unit 07 comprises a wiping strip fixing plate 27 and a plurality of wiping strips 26, the wiping strip fixing plate 27 is fixed to the shaft support 06, each wiping strip 26 is horizontally arranged and fixed to the top surface of the wiping strip fixing plate 27, each wiping strip 26 is horizontally arranged and parallel to each other, the wiping paper is in contact with and covers each wiping strip 26 above the wiping strip unit 07, when the nozzle passes over the wiping paper 100 above the wiping strip unit 07, there is a certain pressure between the nozzle and the wiping paper 100 in the vertical direction, since the wiping strip 26 is made of elastic material, it can buffer the pressure between the nozzle and the wiping paper 100, so that the nozzle is not easy to be damaged during wiping.

[0055] In use, the wiping paper roll 200 is sleeved on the feeding shaft 14, one end of the wiping paper roll 200 is sequentially wound around the floating roller 16 from bottom to top and the wiping strip unit 07 from top to bottom, and finally fixed to the collecting shaft 11, the driving assembly 04 drives the feeding shaft 14 to rotate to feed, in this process, the floating roller 16 gradually moves downward under the action of gravity as the feeding increases, the floating roller 16 stops feeding after moving downward to the preset lower limit position, the nozzle to be cleaned is moved to the wiping paper 100 at the corresponding position above the wiping strip unit 07, from one side of the wiping paper 100 to the other side, the wiping of the nozzle is completed, then the driving assembly 04 drives the collecting shaft 11 to rotate, in the process of collecting, the floating roller 16 gradually moves upward, the part of the wiping paper 100 above the wiping strip unit 07 that has been wiped by the nozzle gradually moves out from above the wiping strip unit 07, the floating roller 16 stops collecting after moving to the preset upper limit position, the part of the wiping paper 100 above the wiping strip unit 07 that is newly arranged will be used for cleaning the nozzle next time, in this way, the nozzle can be cleaned by the nozzle cleaning device provided by the present application, and the adverse effect on the printing quality is reduced.

[0056] Optionally, the feeding shaft 14 is located below the wiping assembly 01, and the feeding shaft 14 is located between the collecting shaft 11 and the floating roller 16 in the second direction. In this way, the structure of the wiping assembly 01 can be more compact, and the space occupied by the wiping assembly 01 is relatively small. Of course, the collecting shaft 11, the floating roller 16 and the feeding shaft 14 can also be arranged in the second direction in sequence.

[0057] Optionally, the wiping assembly 01 further comprises a first guide roller 15 and a second guide roller 09, both of which are fixed on the shaft support 06 and parallel to the first direction, and the first guide roller 15 and the second guide roller 09 are arranged on both sides of the wiping strip unit 07 in the second direction one by one, and the distance between the first guide roller 15 and the second guide roller 09 in the second direction is greater than the distance between the material collecting shaft 11 and the floating roller 16. In this way, the first guide roller 15 and the second guide roller 09 arranged on both sides of the wiping strip unit 07 not only play a guiding role for the wiping paper 100, but also play a tensioning role for the wiping paper 100, so that the wiping paper 100 is not easy to curl when wiping the nozzle, thereby obtaining a better nozzle cleaning effect.

[0058] Optionally, the wiping assembly 01 further comprises an upper stop limit switch and a lower stop limit switch, both of which are mounted on the shaft support 06, the upper stop limit switch is located above the lower stop limit switch, the upper stop limit switch is used to contact the floating roller 16 to stop the rotation of the material collecting shaft 11, and the lower stop limit switch is used to contact the floating roller 16 to stop the rotation of the material releasing shaft 14. In this way, the automatic control of the material collecting stop and the material releasing stop of the wiping paper can be realized, the automation degree of the nozzle cleaning device is improved, and through the arrangement of the upper stop limit switch and the lower stop limit switch, the length of the wiping paper 100 used for wiping the nozzle is equal each time, thereby ensuring stable wiping effect. In the embodiment of the application, the upper stop limit switch and the lower stop limit switch can both be position sensors used for communication connection with the controller.

[0059] Optionally, the nozzle cleaning device provided by the embodiment of the application further comprises a fixed base assembly 03, the fixed base assembly 03 comprises a driving member support 10, the driving assembly 04 comprises a material releasing driving member 19 and a material collecting driving member 20, both of which are mounted on the driving member support 10, the material releasing driving member 19 is used for detachable connection with the material releasing shaft 14, and the material collecting driving member 20 is used for detachable connection with the material collecting shaft 11. This facilitates the separation and installation of the wiping assembly 01 and the driving assembly 04, thereby facilitating the maintenance and replacement of the components and the replacement of the wiping paper roll 200.

[0060] Optionally, the nozzle cleaning device provided by the embodiment of the application further comprises a mounting base assembly 02, the mounting base assembly 02 comprises a wiping support plate 12, a mounting base 05, a linear track 18 and a moving driving member 17, the linear track 18 and the driving member support 10 are both fixed to the wiping support plate 12, the linear track 18 extends in the first direction, one end of the linear track 18 is arranged close to the driving member support 10, the mounting base 05 is mounted to the linear track 18, the wiping assembly 01 is fixed to the mounting base 05, and the moving driving member 17 is used to drive the mounting base 05 to move along the linear track 18 in the first direction. In this way, when the moving driving member 17 drives the mounting base 05 and the wiping assembly 01 on the mounting base 05 to move to one end of the linear track 18 away from the driving member support 10, the wiping paper roll 200 on the wiping assembly 01 can be installed or replaced, when the moving driving member 17 drives the mounting base 05 and the wiping assembly 01 on the mounting base 05 to move to the driving member support 10, the pay-off shaft 14 is connected with the pay-off driving member 19, and the take-up shaft 11 is connected with the take-up driving member 20, and the pay-off driving member 19 and the take-up driving member 20 can be started respectively to wipe and clean the nozzle. Preferably, the wiping assembly 01 further comprises a wiping sensor 28, the wiping sensor 13 can be fixed to the shaft support 06 or the driving member support 10, and is in contact with the wiping paper roll 200 on the pay-off shaft 14 under the action of a certain torsional force, the wiping sensor 13 gradually approaches the pay-off shaft 14 as the wiping nozzle operation is performed, and the wiping sensor 13 alarms when the wiping paper roll 200 on the pay-off shaft 14 is used up.

[0061] Optionally, the mounting base assembly 03 further comprises a buffer 08, the buffer 08 is mounted to the top end of the driving member support 10, and protrudes from the side of the driving member support 10 facing the wiping assembly 01 in the first direction, and the buffer 08 is used to abut against the shaft support 06. In this way, when the wiping assembly 01 is driven by the moving driving member 17 to move to the position of the driving member support 10, the buffer 08 is collided first instead of the driving member support 10, the take-up driving member 20 or the pay-off driving member 19, and thus the damage of the take-up shaft 11, the pay-off shaft 14, the take-up driving member 20 and / or the pay-off driving member 19 caused by the above collision is less likely to occur. In the embodiment of the application, the shaft support 06 is arranged opposite to the driving member support 10; the moving driving member 17 is preferably a pneumatic cylinder, and the pay-off driving member 19 and the take-up driving member 20 are both rotary driving members.

[0062] Optionally, the feeding shaft 14 and the feeding driving member 19 are connected through a magnet structure, and / or the collecting shaft 11 and the collecting driving member 20 are connected through a magnet structure. In the embodiment of the application, the magnet structure preferably comprises two permanent magnets 25. When the feeding shaft 14 and the feeding driving member 19 are connected through the magnet structure, one permanent magnet 25 is fixed to the end of the feeding shaft 14, and the other permanent magnet 25 is fixed to the end of the output shaft of the feeding driving member 19. When the feeding shaft 14 and the feeding driving member 19 need to be connected, the two permanent magnets 25 are connected through magnetic force. When the collecting shaft 11 and the collecting driving member 20 are connected through the magnet structure, one permanent magnet 25 is fixed to the end of the collecting shaft 11, and the other permanent magnet 25 is fixed to the end of the output shaft of the collecting driving member 20. When the collecting shaft 11 and the collecting driving member 20 need to be connected, the two permanent magnets 25 are connected through magnetic force.

[0063] Optionally, the nozzle cleaning device provided by the embodiment of the application further comprises a nozzle surface observation camera assembly 21, which is arranged close to the wiping assembly 01 and below the wiping strip unit 07. In this way, after the nozzle is wiped by the wiping paper 100 on the wiping assembly 01, the nozzle continues to move through the nozzle surface observation camera assembly 21, and the nozzle surface observation camera assembly 21 can collect the nozzle image, and then it can be judged whether the nozzle is wiped clean. The judgment can be completed by an operator or by a controller. Preferably, the nozzle surface observation camera assembly 21 comprises a camera mounting plate 24, a camera body 22 and an adjusting member 23. The camera body 22 and the adjusting member 23 are mounted on the camera mounting plate 24. The position of the camera body 22 on the camera mounting plate 24 is adjusted by operating the adjusting member 23. The nozzle surface observation camera assembly 21 is fixedly connected to the outside.

[0064] Another aspect of the application provides a printing system comprising the nozzle cleaning device provided by the embodiment of the application.

[0065] The printing system provided by the application adopts the nozzle cleaning device provided by the application. In use, the wiping paper roll 200 is sleeved on the unwinding shaft 14, one end of the wiping paper roll 200 is sequentially wound around the floating roller 16 from bottom to top and the wiping strip unit 07 from top to bottom, and finally fixed to the winding shaft 11. The driving assembly 04 drives the unwinding shaft 14 to rotate and unwind the material. In this process, the floating roller 16 gradually moves downward under the action of gravity as the unwinding increases. After the floating roller 16 moves to the preset lower limit position, the unwinding stops. The nozzle to be cleaned is moved to the wiping paper 100 at the corresponding position above the wiping strip unit 07. From one side of the wiping paper 100 to the other side, the wiping of the nozzle is completed. Then, the driving assembly 04 drives the winding shaft 11 to rotate. In the winding process, the floating roller 16 gradually moves upward. The wiping paper 100 above the wiping strip unit 07 that has been wiped by the nozzle gradually moves away from the wiping strip unit 07. After the floating roller 16 moves to the preset upper limit position, the winding stops. The part of the wiping paper 100 above the wiping strip unit 07 that is newly arranged will be used for cleaning the nozzle next time. In this way, the nozzle cleaning device provided by the application can realize the cleaning of the nozzle and reduce the adverse effects on the printing quality.

[0066] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A nozzle cleaning device, characterized in that, The device includes a wiping assembly and a driving assembly. The wiping assembly includes a shaft support, and a feeding shaft, a receiving shaft, a floating roller, and a wiping strip unit, all mounted on the shaft support and arranged horizontally. The feeding shaft, the receiving shaft, and the floating roller are all parallel to a first direction. The receiving shaft and the floating roller are both located below the wiping strip unit. In a second direction, the receiving shaft and the floating roller are located on opposite sides of the wiping strip unit, with the floating roller located below the feeding shaft. A vertically movable groove is formed on the shaft support, and the floating roller slides in cooperation with the groove in the vertical direction. The driving assembly is used to drive the feeding shaft and the receiving shaft to rotate respectively. The first direction is parallel to the axial direction of the feeding shaft, and the second direction is perpendicular to the first direction and parallel to the horizontal plane.

2. The nozzle cleaning device according to claim 1, characterized in that, The feeding shaft is located below the wiping assembly, and in the second direction, the feeding shaft is located between the receiving shaft and the floating roller.

3. The nozzle cleaning device according to claim 1, characterized in that, The wiping assembly also includes a first guide roller and a second guide roller, both fixed on the shaft bracket. The first guide roller and the second guide roller are parallel to the first direction. In the second direction, the first guide roller and the second guide roller are arranged one-to-one on both sides of the wiping strip unit. In the second direction, the distance between the first guide roller and the second guide roller is greater than the distance between the receiving shaft and the floating roller.

4. The nozzle cleaning device according to claim 1, characterized in that, The wiping assembly also includes an upper stop limit switch and a lower stop limit switch, both mounted on the shaft bracket. The upper stop limit switch is located above the lower stop limit switch. The upper stop limit switch is used to contact the floating roller to stop the rotation of the receiving shaft, and the lower stop limit switch is used to contact the floating roller to stop the rotation of the discharging shaft.

5. The nozzle cleaning device according to claim 1, characterized in that, It also includes a fixed base assembly, which includes a drive component bracket. The drive component includes a feeding drive component and a receiving drive component, both mounted on the drive component bracket. The feeding drive component is detachably connected to the feeding shaft, and the receiving drive component is detachably connected to the receiving shaft.

6. The nozzle cleaning device according to claim 5, characterized in that, It also includes a mounting base assembly, which includes a wiping tray, a mounting base, a linear track, and a moving drive component. The linear track and the drive component bracket are both fixed to the wiping tray. The linear track extends in the first direction, with one end of the linear track located near the drive component bracket. The mounting base is mounted on the linear track, and the wiping assembly is fixed to the mounting base. The moving drive component is used to drive the mounting base to move along the linear track in the first direction.

7. The nozzle cleaning device according to claim 6, characterized in that, The fixed base assembly further includes a buffer mounted on the top of the drive component bracket. In the first direction, the buffer protrudes from the side of the drive component bracket facing the wiping assembly and is used to abut against the shaft bracket.

8. The nozzle cleaning device according to claim 5, characterized in that, The feeding shaft and the feeding drive are connected by a magnetic structure, and / or the receiving shaft and the receiving drive are connected by a magnetic structure.

9. The nozzle cleaning device according to any one of claims 1 to 8, characterized in that, It also includes a nozzle surface observation camera assembly, which is disposed close to the wiping assembly and located below the wiping strip unit.

10. A printing system, characterized in that, Includes the nozzle cleaning device as described in any one of claims 1 to 9.

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