Spray dyeing system

Abstract

The utility model relates to a jet dyeing system. The spray dyeing system comprises a supporting device; the spray head comprises a plurality of spray needles and is used for spraying liquid to be sprayed; the driving device is arranged on the supporting device and is configured to drive at least one of the spray head and the maintenance device, so that the spray head is matched with the maintenance device; and the maintenance device at least comprises a spray head cleaning unit which is configured to at least clean the liquid to be sprayed on the outer surface of the spray needle of the spray head. According to the technical scheme, at least the to-be-sprayed liquid on the outer surface of the spray needle of the spray head can be cleaned, so that the adverse effect of the to-be-sprayed liquid on the outer surface of the spray needle of the spray head is eliminated, and the spray dyeing effect is effectively guaranteed.

Description

Technical Field

[0001] This disclosure generally relates to inkjet printing technology, and more specifically, to a dyeing system. Background Technology

[0002] Spray dyeing equipment is used to spray dye or coat target objects (such as fabrics, object surfaces, etc.). The equipment sprays dyeing liquid (such as ink) through nozzles to dye the target object.

[0003] In traditional spray dyeing equipment, when the nozzle sprays dyeing liquid, the outer surface of the nozzle (e.g., the tip of the nozzle) will be contaminated with or have residual liquid (e.g., droplets). Due to the influence of these droplets, the direction of the dyeing liquid sprayed by the nozzle will deviate from the intended direction, thus affecting the dyeing effect.

[0004] In summary, the shortcomings of traditional equipment are that the liquid adhering to the outer surface of the nozzle needle causes the direction of the dyeing liquid sprayed from the nozzle to deviate from the predetermined direction, thus affecting the dyeing effect. Utility Model Content

[0005] This disclosure provides a spray dyeing system that can at least clean the outer surface of the nozzle needle of the spray head of the spray head, thereby eliminating the adverse effects of the outer surface of the nozzle needle of the spray head and effectively ensuring the spray dyeing effect.

[0006] According to a first aspect of this disclosure, a spray dyeing system is provided. The spray dyeing system includes: a support device; a nozzle including a plurality of nozzle needles for spraying a liquid to be sprayed; a drive device disposed on the support device and configured to drive at least one of the nozzle and a maintenance device such that the nozzle and the maintenance device cooperate; and a maintenance device including at least: a nozzle cleaning unit configured to clean at least the outer surface of the nozzle needles of the nozzle from the liquid to be sprayed.

[0007] In some embodiments, the nozzle cleaning unit includes: a suction unit, the suction including at least a suction nozzle for suctioning the nozzle needle; and a driving device including: a suction nozzle driving unit configured to drive at least the suction nozzle of the suction unit such that the suction nozzle corresponds to a target nozzle among a plurality of nozzle needles.

[0008] In some embodiments, the suction unit is configured to suction the target nozzle when the nozzle sprays the liquid to be sprayed.

[0009] In some embodiments, the nozzle cleaning unit further includes a brush unit; the driving device is also configured to drive at least one of the nozzle and the brush unit such that the nozzle and the brush unit move relative to each other, so that the brush unit at least brushes the outer surface of the nozzle.

[0010] In some embodiments, the brush unit includes a brush roller with bristles on its outer surface; the driving device further includes a brush driving unit configured to drive the brush roller to rotate.

[0011] In some embodiments, the driving device further includes a nozzle driving unit, configured to drive the nozzle to reciprocate within a predetermined stroke range while the brush driving unit drives the brush roller to rotate.

[0012] In some embodiments, the spraying system further includes: a liquid supply device connected to the nozzle and configured to supply the liquid to be sprayed to the nozzle; the maintenance device further includes: a humidifying unit; the driving device is further configured to drive at least one of the nozzle and the humidifying unit such that the nozzle cooperates with the humidifying unit; the liquid supply device is further configured to inject the supplied liquid to be sprayed into the humidifying unit through the nozzle, and such that the liquid to be sprayed in the humidifying unit at least submerges the tip of the spray needle, wherein the liquid to be sprayed is a humidifying liquid.

[0013] In some embodiments, the maintenance device further includes: a reflux unit connected between the humidifying unit and the liquid supply device, and configured to allow the liquid to be sprayed in the humidifying unit to flow back to the liquid supply device via the reflux unit; the liquid supply device is further configured to allow the liquid to be sprayed that flows back to the liquid supply device to be supplied to the nozzle.

[0014] In some embodiments, the moisturizing unit includes a moisturizing tank with a drain outlet at the bottom, which can be closed and opened.

[0015] In some embodiments, the maintenance device further includes: a first liquid receiving tank, arranged in parallel with the moisturizing unit, the bottom of the first liquid receiving tank having a discharge port aligned with the second liquid receiving tank; and a second liquid receiving tank, disposed below the first liquid receiving tank and the moisturizing unit, the second liquid receiving tank at least covering the area corresponding to the first liquid receiving tank and the moisturizing unit.

[0016] According to embodiments of this disclosure, the nozzle cleaning unit can at least clean the liquid to be sprayed from the outer surface of the nozzle needle, thereby eliminating the adverse effects of the liquid to be sprayed on the outer surface of the nozzle needle and effectively ensuring the spraying effect.

[0017] The utility model summary section is provided to present the chosen concepts in a simplified form, which will be further described in the detailed embodiments below. The utility model summary section is not intended to identify key or essential features of this disclosure, nor is it intended to limit the scope of this disclosure. Attached Figure Description

[0018] Figure 1 A perspective view of a spray dyeing system according to an embodiment of the present disclosure is shown.

[0019] Figure 2An exploded schematic diagram of a spray dyeing system according to an embodiment of the present disclosure is shown.

[0020] Figure 3 A perspective view of a nozzle according to an embodiment of the present disclosure is shown.

[0021] Figure 4 A perspective view of a drive device according to an embodiment of the present disclosure is shown.

[0022] Figure 5 A perspective view of a maintenance device according to an embodiment of the present disclosure is shown.

[0023] Figure 6 A perspective view of a transmission apparatus according to an embodiment of the present disclosure is shown.

[0024] Figure 7 A front view schematic diagram of a spray dyeing system according to an embodiment of the present disclosure is shown.

[0025] Figure 8 A top view schematic diagram of a spray dyeing system according to an embodiment of the present disclosure is shown.

[0026] Figure 9 A partial cross-sectional schematic diagram of a spray dyeing system according to an embodiment of the present disclosure is shown.

[0027] Figure 10 A partial cross-sectional schematic diagram of a spray dyeing system according to an embodiment of the present disclosure is shown.

[0028] Figure 11 A partial schematic diagram of a spray dyeing system according to an embodiment of the present disclosure is shown.

[0029] Figure 12 A front view schematic diagram of a spray dyeing system in a cleaning state according to an embodiment of the present disclosure is shown.

[0030] Figure 13 A side cross-sectional schematic diagram of a spray dyeing system in a cleaning state according to an embodiment of the present disclosure is shown.

[0031] Figure 14 A front view schematic diagram of a spray dyeing system in a moisturizing state according to an embodiment of the present disclosure is shown.

[0032] Figure 15 A side cross-sectional schematic diagram of a spray dyeing system in a moist state according to an embodiment of the present disclosure is shown.

[0033] Figure 16 It shows Figure 15 A magnified schematic diagram of a portion of the image.

[0034] Figure 17A front view schematic diagram of a maintenance state of a spray dyeing system according to an embodiment of the present disclosure is shown.

[0035] Figure 18 A side cross-sectional schematic diagram of a maintenance state of a spray dyeing system according to an embodiment of the present disclosure is shown.

[0036] Figure 19 A flowchart illustrating a method for cleaning a spray dyeing system according to an embodiment of this disclosure is shown.

[0037] Figure 20 A flowchart illustrating a maintenance method for a spray dyeing system according to an embodiment of this disclosure is shown.

[0038] Figure 21 A flowchart illustrating a maintenance method for a spray dyeing system according to an embodiment of this disclosure is shown.

[0039] Figure 22 A schematic diagram illustrating the implementation of a spray dyeing system according to an embodiment of the present disclosure is shown.

[0040] Figure 23 A schematic diagram illustrating the implementation of a spray dyeing system according to an embodiment of the present disclosure is shown.

[0041] Figure 24 A block diagram schematically illustrates an electronic device suitable for implementing embodiments of the present disclosure.

[0042] In the various figures, the same or corresponding reference numerals indicate the same or corresponding parts. Detailed Implementation

[0043] Preferred embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art.

[0044] The term "comprising" and its variations as used herein signify open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "at least partially based on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc., may refer to different or the same objects.

[0045] As described above, in traditional spray dyeing equipment, when the nozzle sprays out dyeing liquid, the outer surface of the nozzle (e.g., the tip of the nozzle) will be contaminated with or have residual liquid (e.g., droplets). Due to the influence of factors such as the surface tension of these droplets, the direction of the dyeing liquid sprayed by the nozzle will deviate from the intended direction, thus affecting the dyeing effect.

[0046] To at least partially solve one or more of the above-mentioned problems and other potential problems, exemplary embodiments of this utility model propose a spray dyeing system and a spray dyeing system maintenance method. According to the technical solution of the embodiments of this disclosure, the nozzle cleaning unit can at least clean the liquid to be sprayed from the outer surface of the nozzle needles, thereby eliminating the adverse effects of the liquid to be sprayed on the outer surface of the nozzle needles and effectively ensuring the spray dyeing effect.

[0047] The following description, in conjunction with the accompanying drawings, exemplarily illustrates the spray dyeing system 100. Figure 1 A perspective view of a spray dyeing system 100 according to an embodiment of the present disclosure is shown. For ease of understanding, the positive directions of the X-axis, Y-axis, and Z-axis are indicated by arrows in the figure. Figure 2 An exploded view of a spray dyeing system 100 according to an embodiment of the present disclosure is shown. Figure 3 A perspective view of a nozzle 102 according to an embodiment of the present disclosure is shown. Figure 4 A perspective view of a drive device 104 according to an embodiment of the present disclosure is shown. Figure 5 A perspective view of a maintenance device 106 according to an embodiment of the present disclosure is shown. Figure 6 A perspective view of a transmission device 108 according to an embodiment of the present disclosure is shown. Figure 7 A front view schematic diagram of a spray dyeing system 100 according to an embodiment of the present disclosure is shown. Figure 8 A top view schematic diagram of a spray dyeing system 100 according to an embodiment of the present disclosure is shown. It should be understood that, for ease of illustration, not all components of the relevant system or apparatus are shown in the above figure, or some components of the relevant apparatus are also shown in the corresponding figures of other apparatuses.

[0048] The spray dyeing system 100 includes a liquid supply device 101, a nozzle 102, a drive device 104, a maintenance device 106, and a transmission device 108. The spray dyeing system 100 also includes a control device (not shown in the figure), which generates control commands in response to operation instructions to control the operation of the liquid supply device 101, drive device 104, maintenance device 106, transmission device 108, etc. The control device can be implemented using, for example, a PLC (Programmable Logic Controller), FPGA (Field Programmable Gate Array), ASIC (Application Specific Integrated Circuit), or CPU (Central Processing Unit).

[0049] Regarding the printhead 102, it includes, for example, a plurality of nozzles. In some embodiments, the plurality of nozzles includes, for example, multiple rows of nozzles arranged along the X-axis. Each row of nozzles includes, for example, a plurality of nozzles arranged along the Y-axis. The area covered by the printhead 102 in the X-axis direction corresponds, for example, to the maximum spray width of the printhead 102. The printhead 102 is used to spray a liquid to be sprayed. When ink for spraying is supplied, the liquid to be sprayed by the printhead 102 is ink. When cleaning fluid for cleaning the printhead 102 is supplied, the liquid to be sprayed by the printhead 102 is cleaning fluid. When moisturizing fluid for moisturizing the printhead 102 is supplied, the liquid to be sprayed by the printhead 102 is moisturizing fluid.

[0050] The liquid supply device 101 includes, for example, a liquid storage device 121, a liquid supply line 122, and a liquid supply pump 123. The liquid storage device 121 stores the liquid to be sprayed. The liquid to be sprayed includes, for example, ink to be sprayed (e.g., as a second liquid to be sprayed), cleaning fluid (e.g., as a third liquid to be sprayed), and moisturizing fluid (e.g., as a first liquid to be sprayed). The liquid storage device 121 is, for example, detachable. The liquid storage device 121 storing the corresponding liquid to be sprayed can be replaced according to different operating stages. For example, during the printing operation stage, it can be replaced with a liquid storage device 121 storing ink to be sprayed; during the cleaning operation stage, it can be replaced with a liquid storage device 121 storing cleaning fluid; and during the moisturizing operation stage, it can be replaced with a liquid storage device 121 storing moisturizing fluid. In some embodiments, the moisturizing fluid and the cleaning fluid may be liquids having the same composition.

[0051] The nozzle 102 is connected to the liquid storage device 121 via the liquid supply line 122. The liquid supply pump 123 is used to drive the liquid to be sprayed in the liquid storage device 121 into the nozzle 102 via the liquid supply line 122 so as to spray it out. The liquid supply device controls the flow rate of the liquid to be sprayed so that the liquid to be sprayed is continuously output from the nozzle 102 in the form of a liquid column.

[0052] A drive unit 104 is mounted on a support device, which includes, for example, a bracket 144. The drive unit 104 includes a nozzle drive unit, which drives a nozzle 102 to move the nozzle 102 to at least one of a painting station and a maintenance station. The nozzle drive unit includes, for example, a horizontal drive unit 141 and a vertical drive unit 142. The horizontal drive unit 141 is mounted on the bracket 144 and configured to drive the nozzle 102 to move horizontally. The horizontal drive unit 141 includes, for example, a first slide rail and a first motor, the first slide rail extending in a direction parallel to, for example, the Y-axis. The first motor of the horizontal drive unit 141 drives the nozzle 102 to move along the first slide rail.

[0053] A vertical drive unit 142 is, for example, mounted on a horizontal drive unit 141, and the horizontal drive unit 141 is capable of driving the vertical drive unit 142 to move horizontally. A nozzle 102 is, for example, mounted on the vertical drive unit 142. The vertical drive unit 142 drives the nozzle 102 to move vertically (e.g., parallel to the Z-axis). The vertical drive unit 142 includes, for example, a second slide rail and a second motor, and the second slide rail is, for example, arranged vertically (e.g., parallel to the Z-axis). The second motor of the vertical drive unit 142, for example, drives the nozzle 102 to move along the second slide rail.

[0054] In some embodiments, the drive device 104 may include a drive unit for driving the maintenance device 106, which can drive the maintenance device 106 to move so that the nozzle 102 cooperates with the maintenance device 106.

[0055] The transport device 108 is used to transport the printing object 201 (e.g., fabric). The transport device 108 includes, for example, a drive roller 182, a first roller 183, and a first driven roller 181. The drive roller 182 is used to convey the target object 201 out of the printing area. The first roller 183 conveys the target object 201 to the printing area, with at least a portion of the target object 201 extending between the drive roller 182 and the first roller 183. The first driven roller 181 is configured to contact the drive roller 182 such that pressure is applied to the target object 201 passing between the first driven roller 181 and the drive roller 182, and under this pressure, the liquid to be printed applied to the target object 201 penetrates into the interior and / or second surface of the target object 201. The printing area is disposed between the drive roller and the first roller, or the printing area is disposed above the first roller.

[0056] In some embodiments, the spraying area and the maintenance area where the maintenance device 106 is located are offset from each other along the Y-axis (i.e., they do not overlap). The drive device 103 (e.g., the horizontal drive unit 141) can drive the nozzle 102 to move along the Y-axis so that the nozzle 102 moves to at least one of the spraying area and the maintenance area. It should be understood that when the nozzle 102 is moved to the spraying area, spraying and dyeing operations can be performed; when the nozzle 102 is moved to the maintenance area, maintenance-related operations can be performed on the nozzle 102.

[0057] Figure 9 A partial cross-sectional schematic diagram of a spray dyeing system 100 according to an embodiment of the present disclosure is shown. Figure 10 A partial cross-sectional schematic diagram of a spray dyeing system 100 according to an embodiment of the present disclosure is shown. Figure 11 A partial schematic diagram of a spray-dyeing system 100 according to an embodiment of the present disclosure is shown. The maintenance device 106 includes, for example, a nozzle cleaning unit. The maintenance device 106 also includes a first liquid receiving tank 165, a moisturizing unit 166, and a second liquid receiving tank 167. The nozzle cleaning unit includes, for example, a suction unit. The suction unit is used to perform a suction operation on the nozzle 102 for cleaning and maintenance. The nozzle cleaning unit also includes, for example, a brush unit 164. The brush unit 164 is used to perform a sweeping operation on the nozzle 102 for cleaning and maintenance.

[0058] The suction unit includes, for example, a suction nozzle 161, a negative pressure generating unit (not shown in the figure), and a first conduit 162. The suction nozzle 161 includes, for example, a cavity formed by multiple sidewalls, and also includes an opening 1611 that communicates the cavity with the outside. The length of the opening 1611 extending in the Y-axis direction is, for example, not less than the length covered in the Y-axis direction by the multiple nozzles provided in the nozzle 102, so that suction operation can be performed on at least one row of nozzles.

[0059] The negative pressure generating unit is, for example, a pump. One end of the first conduit 162 is connected to the cavity of the nozzle 161. The negative pressure generated by the negative pressure generating unit is sufficient to draw the liquid to be sprayed from the outer surface of the target nozzle into the cavity of the nozzle 161, and then discharge it through the first conduit 162.

[0060] In some embodiments, the other end of the first conduit 162 is connected to a liquid recovery device, for example, and the pumped liquid to be sprayed flows into the liquid recovery device for recovery.

[0061] In some embodiments, the other end of the first conduit 162 is connected to a liquid storage device 121, for example, so that the liquid to be sprayed is drawn into the liquid storage device 121, thereby realizing the circulation of the liquid to be sprayed.

[0062] The drive unit 104 also includes a nozzle drive unit 143, which is configured to drive at least the nozzle 161 of the suction unit such that the nozzle 161 corresponds to a target nozzle among a plurality of nozzles, so that the nozzle 161 suctions the target nozzle, thereby cleaning at least the outer surface of the target nozzle of the liquid to be sprayed. The nozzle drive unit 143 includes, for example, a third slide rail and a third motor. The third slide rail is, for example, arranged along the direction of extension of the nozzle 102 (X-axis direction). The third motor is used to drive the nozzle 161 to move along the third slide rail.

[0063] The nozzle 161 extends, for example, along the Y-axis direction, and the nozzle drive unit 143 can drive the nozzle 161 to move along the X-axis direction (i.e., the direction in which the nozzle 102 extends) so as to reach the target nozzle and correspond to the target nozzle.

[0064] In some embodiments, if it is found that the liquid to be sprayed from individual nozzles of the nozzle 102 is tilted relative to the predetermined spray direction, it can be determined that there are droplets on the outer surface of the nozzle, which cause the liquid to be sprayed from the nozzle to be tilted relative to the predetermined spray direction. Therefore, this nozzle can be used as the target nozzle, and the suction nozzle 161 can be driven by the suction nozzle drive unit 143 to move along the direction of extension of the nozzle 102 (e.g., the X-axis direction) to the position corresponding to the target nozzle. Then, the negative pressure generating unit is activated to perform a suction operation to clean the liquid to be sprayed from the outer surface of the target nozzle.

[0065] In some embodiments, all the nozzles of the nozzle 102 can be used as target nozzles for a complete suction operation. For example, a negative pressure generating unit can be activated to perform a suction operation, and the suction nozzle 161 can be driven by the suction nozzle driving unit 143 to move along the direction of extension of the nozzle 102 (e.g., the X-axis direction), so that the suction nozzle 161 moves from one end of the nozzle 102 to the other end, performing a suction operation on each row of nozzles of the nozzle 102 one by one to clean the liquid to be sprayed from the outer surface of the nozzles.

[0066] The first conduit 162 is, for example, a flexible tube, to facilitate the movement of the suction nozzle 161.

[0067] The drive unit 104 is also configured to drive at least one of the nozzle and the brush unit 164 such that the nozzle 102 moves relative to the brush unit 164 so that the brush unit 164 performs a sweeping operation on the nozzle 102, thereby cleaning at least the outer surface of the nozzle 102 of the liquid to be sprayed.

[0068] In some embodiments, the brush unit 164 includes, for example, a brush roller. The brush roller is arranged along the direction in which the nozzle 102 extends (e.g., the X-axis direction), that is, the brush roller is arranged parallel to the nozzle 102. The outer surface of the brush roller is provided with bristles. The drive device 104 includes, for example, a brush drive unit 163. The brush drive unit 163 can drive the brush roller to rotate in order to perform a brushing operation on the nozzle 102.

[0069] For example, the nozzle 102 is driven to move along the Y-axis by the horizontal drive unit 141 so as to correspond to the position of the brush unit 164 (e.g., the brush roller) in the Y-axis direction. Then, the nozzle 102 is driven to move along the Z-axis by the vertical drive unit 142 so as to correspond to the brush unit 164 in the Z-axis direction (i.e., the height direction), such that the brush unit 164 can at least sweep the outer surface of the nozzle needle of the nozzle 102. In some embodiments, the height of the nozzle 102 can also be adjusted so that the brush unit 164 can also sweep the outer surface of the lower substrate of the nozzle 102. It should be understood that the nozzle extends to the outside of the lower substrate. Then, the brush roller is driven to rotate by the brush drive unit 163 so that the brush unit 164 performs a sweeping operation on the nozzle 102 to at least clean the liquid to be sprayed from the outer surface of the nozzle.

[0070] It is worth noting that the brush drive unit 163 can drive the brush unit 164 to rotate in the forward or reverse direction, or a combination of both. The brush drive unit 163 can adjust the rotational speed of the brush unit 164 to apply a brushing force to the nozzle 102 corresponding to the rotational speed.

[0071] In some embodiments, while the brush drive unit 163 drives the brush unit 164 to rotate in order to sweep the nozzle 102, the drive device 104 (e.g., the horizontal drive device 141) also drives the nozzle 102 to reciprocate along the horizontal direction (e.g., the Y-axis direction) within a predetermined stroke range. That is, by combining the rotation of the brush roller with the reciprocating motion of the nozzle 102 along the horizontal direction, the cleaning efficiency and cleaning effect are improved.

[0072] The maintenance device 106 also includes a first liquid receiving tank 165, a moisturizing unit 166, and a second liquid receiving tank 167. The moisturizing unit 166 includes, for example, a moisturizing tank with a drain outlet at its bottom, which can be closed and opened. The first liquid receiving tank 165 is arranged side-by-side with the moisturizing unit 166. For example, the first liquid receiving tank 165 and the moisturizing unit 166 are located on either side of the brush unit 164 along the Y-axis. The second liquid receiving tank 167 is located below the first liquid receiving tank 165, the moisturizing unit 166, and the brush unit 164, and at least covers the area corresponding to the first liquid receiving tank 165, the moisturizing unit 166, and the brush unit 164. The liquid to be sprayed cleaned by the brush unit 164 can flow into the second liquid receiving tank 167. The first liquid receiving tank 165 has a drain outlet aligned with the second liquid receiving tank 167; when the drain outlet is opened, the liquid in the first liquid receiving tank 165 flows into the second liquid receiving tank 167. The moisturizing unit 166 is provided with a discharge port aligned with the second liquid receiving tank 167. When the discharge port is opened, the liquid in the moisturizing unit 166 flows into the second liquid receiving tank 167.

[0073] Figure 12 A front view schematic diagram of a spray dyeing system 100 in a cleaning state according to an embodiment of the present disclosure is shown. Figure 13 A side cross-sectional view of a spray dyeing system 100 in a cleaning state, according to an embodiment of the present disclosure, is shown. Figure 19 A flowchart of a cleaning method 1900 for a spray dyeing system 100, according to an embodiment of this disclosure, is shown. It should be understood that method 1900 can be performed, for example, at a control device, or at... Figure 24 The described electronic device 2400 performs the procedure. Method 1900 can be used, for example, in a dyeing system 100. It should be understood that method 1900 may also include additional actions not shown and / or the actions shown may be omitted, and the scope of this disclosure is not limited in this respect.

[0074] At step 1902: At least one of the nozzle and brush unit is driven to engage with the brush unit. For example, the control device controls the drive device 104 to engage the nozzle 102 with the brush unit 164.

[0075] At step 1904, the liquid supply device supplies a third liquid to be sprayed to the nozzle so that the third liquid to be sprayed is sprayed out through the nozzle. The third liquid to be sprayed is a cleaning fluid. For example, the control unit controls the liquid supply device 101 to supply cleaning fluid to the nozzle 102 so that the cleaning fluid is sprayed out through the nozzle 102.

[0076] At step 1906, at least one of the nozzle and brush unit is driven to move relative to each other, such that the brush unit at least brushes the outer surface of the nozzle. For example, the control device controls the drive device 104 to drive at least one of the nozzle 102 and brush unit 164 to move relative to each other, such that the brush unit 164 at least brushes the outer surface of the nozzle 102.

[0077] For example, after the spray painting system 100 completes the spraying operation on the target object 201, a cleaning operation can be performed on the printhead 102, etc. When the control device detects a cleaning command, the control device controls the drive device 104 to engage the printhead 102 with the first liquid receiving tank 165. For example, the control device controls the drive device 104 to move the printhead 102 above the first liquid receiving tank 165. Then, the control device controls the liquid supply device 101 to supply cleaning fluid to the printhead 102 to discharge any residual ink to be sprayed in the liquid supply line 122, the printhead 102, etc. It should be understood that at this time, the liquid storage device 121 is replaced with a liquid storage device 121 for storing cleaning fluid. The discharged ink to be sprayed can be recycled and reused.

[0078] Then, the control device controls the drive device 104 to engage the nozzle 102 with the brush unit 164. The control unit also controls the liquid supply device 101 to supply cleaning fluid to the nozzle 102, causing the cleaning fluid to be sprayed out through the nozzle 102. Simultaneously, the control device controls the drive device 104 to drive at least one of the nozzle 102 and the brush unit 164, causing relative movement between the nozzle 102 and the brush unit 164, so that the brush unit 164 at least brushes the outer surface of the nozzle 102. For example, the control device controls the brush drive unit 163 to drive the brush unit 164 to rotate, so as to at least brush the outer surface of the nozzle 102. It should be understood that during this process, the cleaning fluid is sprayed from the nozzle 102 onto the brush unit 164, and the brush unit 164, carrying the cleaning fluid, brushes the outer surface of the nozzle 102, for example, cleaning and brushing the outer surface of the nozzle needle, the lower surface of the lower substrate of the nozzle 102, etc. The cleaned cleaning fluid flows into the second receiving tank 167.

[0079] In some embodiments, at step 1906, the brush unit is driven to rotate while the nozzle is driven to reciprocate within a predetermined stroke range. For example, while the brush unit 164 can be driven to rotate by the brush drive unit 163 to sweep the nozzle 102, the nozzle 102 is also driven to reciprocate along the horizontal direction (e.g., the Y-axis direction) within a predetermined stroke range by the drive device 104 (e.g., the horizontal drive device 141). That is, by combining the rotation of the brush roller with the reciprocating motion of the nozzle 102 along the horizontal direction, the cleaning efficiency and cleaning effect are improved.

[0080] Figure 14 A front view schematic diagram of a spray dyeing system 100 in a moist state according to an embodiment of the present disclosure is shown. Figure 15 A side cross-sectional schematic view of a spray dyeing system 100 in a moist state according to an embodiment of the present disclosure is shown. Figure 16 It shows Figure 15 A partially enlarged schematic diagram. It is worth noting that the initial position of the suction unit's nozzle 161 can be outside the end of the nozzle 102, that is, outside the area covered by the nozzle 102 in the X-axis direction, without interfering with the movement of the nozzle 102 in the Y-axis and Z-axis directions. Figure 20 A flowchart of a method 2000 for moisturizing a spray dyeing system 100, according to an embodiment of this disclosure, is shown. It should be understood that method 2000 can be performed, for example, at a control device, or at... Figure 24 The described electronic device 2400 performs the procedure. Method 2000 can be used, for example, in a dyeing system 100. It should be understood that method 2000 may also include additional actions not shown and / or the actions shown may be omitted, and the scope of this disclosure is not limited in this respect.

[0081] At step 2002, in response to the detection of a cleaning command, the ink to be sprayed in the printhead is discharged.

[0082] In step 2004, at least one of the spray nozzle and the moisturizing unit is driven so that the spray nozzle engages with the moisturizing unit.

[0083] In step 2006, a moisturizing liquid is supplied to the nozzle via a liquid supply device so that the moisturizing liquid is injected into the moisturizing unit through the nozzle and such that the moisturizing liquid in the moisturizing unit at least submerges the tip of the nozzle.

[0084] It is worth noting that a moisturizing operation can be performed after the printing operation is completed. At this time, for example, in step 2002, when the control device detects a cleaning command, the control device controls the drive device 104 to move the printhead 102 to engage with the first liquid receiving tank 165, for example, moving the printhead 102 above the first liquid receiving tank 165. The control device controls the liquid supply pump 123 of the liquid supply device 101 to apply pressure to the printhead 102, causing the liquid to be printed (e.g., ink to be printed) in the printhead 102 to be discharged. It should be understood that at this time, the liquid storage device 121 can be empty. The liquid to be printed discharged from the printhead 102 flows into the first liquid receiving tank 165. The first liquid receiving tank 165 is, for example, connected to a recycling device. The liquid to be printed discharged from the printhead 102 is recycled after being treated, for example, by filtration or other processes through the recycling device.

[0085] Alternatively, a moisturizing operation can be performed after the cleaning operation. In this case, for example, at step 2002, when the control device detects a cleaning command, the control device controls the liquid supply device 101 to discharge the cleaning fluid from the nozzle 102 (e.g., to the second receiving tank 167). For example, the liquid storage device 121 can be empty, and the control device controls the liquid supply pump 123 of the liquid supply device 101 to apply pressure to the nozzle 102, causing the liquid to be sprayed (e.g., cleaning fluid) in the nozzle 102 to be discharged. Alternatively, the liquid storage device 121 can be replaced with a liquid storage device 121 containing moisturizing fluid, and the control device controls the liquid supply device 101 to supply moisturizing fluid to the nozzle 102, causing the liquid to be sprayed (e.g., cleaning fluid) in the nozzle 102 to be discharged.

[0086] Then, for example, in step 2004, the control device controls the drive device 104 to move the nozzle 102 to cooperate with the moisturizing unit 166, for example, to move the nozzle 102 above the moisturizing unit 166, and then to lower the nozzle 102 so that the nozzle needle of the nozzle 102 enters the area accommodated by the moisturizing tank of the moisturizing unit 166. The liquid storage device 121 is replaced, for example, with a liquid storage device 121 for storing moisturizing liquid. In step 2006, the control device controls the liquid supply device 101 to supply moisturizing liquid to the nozzle 102 so that the moisturizing liquid is injected into the moisturizing unit 166 through the nozzle 102, and the moisturizing liquid in the moisturizing unit 166 at least submerges the tip of the nozzle. For example, the outlet of the moisturizing unit 166 is closed, so that the liquid level of the moisturizing liquid in the moisturizing unit 166 gradually rises, submerging the tip of the nozzle, thereby moisturizing the nozzle.

[0087] In some embodiments, the maintenance device 106 further includes a reflux unit connected between the moisturizing unit 166 and the liquid supply device 101. The reflux unit is configured to allow the liquid to be sprayed (e.g., moisturizing liquid) in the moisturizing unit 166 to flow back to the liquid supply device 101 via the reflux unit. The reflux unit includes, for example, a reflux conduit connecting the outlet of the moisturizing unit 166 and the liquid reservoir 121, so that the liquid to be sprayed in the moisturizing unit 166 flows back to the liquid reservoir 121. After step 2006, method 2000 further includes, for example, allowing the moisturizing liquid in the moisturizing unit to flow back to the liquid supply device via the reflux unit; and allowing the liquid to be sprayed that has flowed back to the liquid supply device to be supplied to the nozzle. For example, a control device controls the reflux unit to allow the liquid to be sprayed (e.g., moisturizing liquid) in the moisturizing unit 166 to flow back to the liquid supply device 101 via the reflux unit, and controls the liquid supply device 101 to allow the liquid to be sprayed that has flowed back to the liquid supply device 101 to be supplied to the nozzle 102. This allows for the circulation of the moisturizing solution, improving the moisturizing effect of the printhead 102. For example, the moisturizing solution and the cleaning solution can be liquids with the same composition. Therefore, with the circulation of the moisturizing solution, residual ink in the printhead 102 and the liquid supply line 122 can also be cleaned.

[0088] It is worth noting that in some embodiments, the drive device 104 may also be used to move the maintenance device 106 (e.g., the humidifying unit 166) in order to cooperate with the nozzle 102.

[0089] Figure 17 A front view schematic diagram of a maintenance state of a spray dyeing system 100 according to an embodiment of the present disclosure is shown. Figure 18 A side cross-sectional schematic view of a maintenance state of a spray dyeing system 100 according to an embodiment of the present disclosure is shown. Figure 21 A flowchart of a maintenance method 2100 for a spray dyeing system 100 according to an embodiment of this disclosure is shown. It should be understood that method 2100 can be performed, for example, at a control device, or at... Figure 24 The described electronic device 2400 performs the action. Method 2100 can be used, for example, in a dyeing system 100. It should be understood that method 2100 may also include additional actions not shown and / or the actions shown may be omitted, and the scope of this disclosure is not limited in this respect.

[0090] At step 2102, in response to the detection of a spraying start command, the drive device is activated to separate the nozzle from the moisturizing unit and to engage the nozzle with the nozzle cleaning unit.

[0091] At step 2104, the nozzle cleaning unit is activated to clean at least the outer surface of the nozzle of the first liquid to be sprayed, which is a moisturizing liquid.

[0092] In step 2106, a second liquid to be sprayed is supplied to the printhead via a liquid supply device. The second liquid to be sprayed is ink.

[0093] For example, before performing the spraying operation, the spraying system 100 is in a moisturizing state. In step 2102, when the control device detects the start spraying command, the control device activates the drive device 104 to separate the nozzle 102 from the moisturizing unit 166 and to engage the nozzle 102 with the nozzle cleaning unit.

[0094] For example, at step 2102, the control device activates the drive device 104 to move the nozzle 102 to engage with the brush unit 164.

[0095] In some embodiments, at step 2104, the control device controls the drive device 104 to drive at least one of the nozzle 102 and the brush unit 164 so that the nozzle 102 and the brush unit 164 move relative to each other so that the brush unit 164 at least brushes the outer surface of the nozzle 102, thereby preventing droplets from adhering to the outer surface of the nozzle.

[0096] In some embodiments, at step 2104, while the brush drive unit 163 drives the brush unit 164 to rotate in order to sweep the nozzle 102, the drive device 104 (e.g., the horizontal drive device 141) also drives the nozzle 102 to reciprocate along the horizontal direction (e.g., the Y-axis direction) within a predetermined stroke range. That is, by combining the rotation of the brush roller with the reciprocating motion of the nozzle 102 along the horizontal direction, the cleaning efficiency and cleaning effect are improved.

[0097] In some embodiments, at step 2104, the suction nozzle of the suction unit is driven so that the suction nozzle corresponds sequentially to a plurality of spray needles, so that the suction unit suctions the plurality of spray needles. For example, a negative pressure generating unit can be activated to perform a suction operation, and the suction nozzle 161 can be driven by the suction nozzle driving unit 143 to move along the direction of extension of the nozzle 102 (e.g., the X-axis direction), so that the suction nozzle 161 moves from one end of the nozzle 102 to the other end, performing a suction operation on each row of spray needles of the nozzle 102 one by one, cleaning the liquid to be sprayed from the outer surface of the spray needles.

[0098] In some embodiments, at step 2104, at least one of the nozzle and the brush unit is driven so that the nozzle and the brush unit move relative to each other so that the brush unit at least brushes the outer surface of the nozzle; then, the suction nozzle of the suction unit is driven so that the suction nozzle corresponds sequentially to a plurality of nozzles so that the suction unit suctions the plurality of nozzles.

[0099] At step 2106, the ink to be sprayed is ejected through the printhead; and while the printhead is ejecting liquid, the printhead is suctioned by a suction unit. For example, the control device controls the drive device 104 to move the printhead 102 to correspond to the first liquid receiving tank 165. Then, the control device activates the liquid supply device 101 to supply the ink to be sprayed to the printhead 102, so that the ink to be sprayed is ejected through the printhead 102. And while the printhead 102 is ejecting the ink to be sprayed, the printhead is suctioned by a suction unit. For example, while the printhead 102 is ejecting the ink to be sprayed, the control device controls the drive device 104 to drive the suction nozzle 161 of the suction unit, so that the suction nozzle 161 corresponds sequentially to a plurality of nozzles, so that the suction unit suctions the plurality of nozzles. For example, a negative pressure generating unit can be activated to perform a suction operation, and the suction nozzle 161 can be driven by the suction nozzle driving unit 143 to move along the direction of extension of the printhead 102 (e.g., the X-axis direction), so that the suction nozzle 161 moves from one end of the printhead 102 to the other end, performing a suction operation on each row of nozzles of the printhead 102 one by one, cleaning the liquid to be sprayed from the outer surface of the nozzles. In this way, droplets can be avoided on the outer surface of the nozzles, ensuring that the nozzles spray the liquid to be sprayed (e.g., ink) in a predetermined direction.

[0100] After the above operations, the control device can control the drive device 104 to move the nozzle 102 to the spraying area so as to carry out the spraying operation on the target object 201.

[0101] In some embodiments, the spraying system 100 is in a moisturizing state before the spraying operation is performed. The reservoir 121 stores, for example, a moisturizing liquid (it should be understood that the moisturizing liquid and the cleaning liquid can be the same liquid). During the spraying process, in response to a start spraying command, for example, the reservoir 121 storing the moisturizing liquid is first removed, and the liquid inside the nozzle 102 and piping is drained (e.g., into the moisturizing tank of the moisturizing unit 166) using the supply pump 123 of the supply device 101. Then, the reservoir 121 is replaced with one storing deionized water (e.g., as a cleaning liquid), and the nozzle 102 is moved to correspond with the maintenance device 106. Deionized water is supplied to the nozzle 102 using the supply pump 123 of the supply device 101 to rinse the nozzle 102 and the inside of the piping. After a certain period, the reservoir 121 storing deionized water is removed, and the deionized water inside the nozzle 102 and piping is drained using the supply pump 123 of the supply device 101. Then, the ink reservoir 121 is connected, and the printhead 102 is moved above the first ink receiving tank 165. The ink supply pump 123 of the ink supply device 101 pumps ink into the printhead 102, thereby purging the residual gas in the printhead 102 and pipeline. At the same time, the suction nozzle 161 is used to suction the nozzle (e.g., the target nozzle) from which the liquid jet is sprayed at an angle. After the liquid jet from the target nozzle is straightened, the printhead 102 is quickly moved to the spraying station (e.g., the dyeing area), and the printing object 201 is driven to start the fabric feeding while the printhead 102 is moving, using the transmission device 108.

[0102] Figure 22 A schematic diagram illustrating the implementation of a spraying operation of a spraying system 100 according to an embodiment of the present disclosure is shown. The spraying area is, for example, positioned between a drive roller 182 and a first roller 183. The drive roller 182 rotates clockwise, thereby moving the target object 201 along the positive Y-axis, and thus conveying it to the spraying area via the first roller 183. The completed sprayed portion of the target object 201 is conveyed out of the spraying area via the drive roller 182 and then enters between the first driven roller 181 and the drive roller 182. During this process, the first roller 183 is driven by the drive roller 182 and rotates clockwise, while the first driven roller 181 is driven by the drive roller 182 and rotates counterclockwise.

[0103] Figure 23A schematic diagram illustrating the implementation of a spraying operation of a spraying system 100 according to an embodiment of the present disclosure is shown. The spraying area is, for example, positioned above a first roller 183. A drive roller 182 rotates counterclockwise, thereby transporting the target object 201 along the positive Y-axis direction, and thus conveying it to the spraying area via the first roller 183. The completed sprayed portion of the target object 201 is conveyed out of the spraying area via the drive roller 182 and then enters between the first driven roller 181 and the drive roller 182. During this process, the first roller 183 is driven by the drive roller 182 and rotates clockwise, and the first driven roller 181 is driven by the drive roller 182 and rotates clockwise.

[0104] Figure 24 A block diagram schematically illustrates an electronic device 2400 suitable for implementing embodiments of the present disclosure. The electronic device 2400 may be used to implement execution methods 1900, 2000, and 2100. As shown, the electronic device 2400 includes a central processing unit (i.e., CPU 2401), which can perform various appropriate actions and processes according to computer program instructions stored in a read-only memory (i.e., ROM 2402) or loaded from a storage unit 2408 into a random access memory (i.e., RAM 2403). Various programs and data required for the operation of the electronic device 2400 may also be stored in the RAM 2403. The CPU 2401, ROM 2402, and RAM 2403 are interconnected via a bus 2404. An input / output interface (i.e., I / O interface 2405) is also connected to the bus 2404.

[0105] Multiple components in electronic device 2400 are connected to I / O interface 2405, including: input unit 2406, output unit 2407, and storage unit 2408. CPU 2401 executes the various methods and processes described above, such as methods 1900, 2000, and 2100. For example, in some embodiments, methods 1900, 2000, and 2100 may be implemented as computer software programs stored in a machine-readable medium, such as storage unit 2408. In some embodiments, part or all of the computer program may be loaded and / or installed on electronic device 2400 via ROM 2402 and / or communication unit 2409. When the computer program is loaded into RAM 2403 and executed by CPU 2401, one or more operations of methods 1900, 2000, and 2100 described above may be performed. Alternatively, in other embodiments, CPU 2401 may be configured to perform one or more actions of methods 200 to 800 by any other suitable means (e.g., by means of firmware).

[0106] It should be further noted that this disclosure can be a method, apparatus, system, and / or computer program product. A computer program product may include a computer-readable storage medium having computer-readable program instructions loaded thereon for performing various aspects of this disclosure.

[0107] Computer-readable storage media can be tangible devices capable of holding and storing instructions for use by an instruction execution device. Computer-readable storage media can be, for example, but not limited to, electrical storage devices, magnetic storage devices, optical storage devices, electromagnetic storage devices, semiconductor storage devices, or any suitable combination thereof. More specific examples (a non-exhaustive list) of computer-readable storage media include: portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), static random access memory (SRAM), portable compact disc read-only memory (CD-ROM), digital multifunction disc (DVD), memory sticks, floppy disks, mechanical encoding devices, such as punch cards or recessed protrusions storing instructions thereon, and any suitable combination thereof. The computer-readable storage media used herein are not to be construed as transient signals themselves, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through waveguides or other transmission media (e.g., light pulses through fiber optic cables), or electrical signals transmitted through wires.

[0108] The computer-readable program instructions described herein can be downloaded from computer-readable storage media to various computing / processing devices, or downloaded via a network, such as the Internet, local area network, wide area network, and / or wireless network, to an external computer or external storage device. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers, and / or edge servers. A network adapter card or network interface in each computing / processing device receives the computer-readable program instructions from the network and forwards them to the computer-readable storage media in the respective computing / processing device.

[0109] Computer program instructions used to perform the operations of this disclosure may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, status setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Smalltalk, C++, etc., and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The computer-readable program instructions may execute entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or may be connected to an external computer (e.g., via the Internet using an Internet service provider). In some embodiments, electronic circuitry, such as programmable logic circuitry, field-programmable gate arrays (FPGAs), or programmable logic arrays (PLAs), is personalized by utilizing the status information of the computer-readable program instructions to implement various aspects of this disclosure.

[0110] Various aspects of this disclosure are described herein with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer-readable program instructions.

[0111] These computer-readable program instructions can be provided to a processor in a voice interaction device, a general-purpose computer, a special-purpose computer, or a processing unit of another programmable data processing device, thereby producing a machine such that, when executed by the processing unit of the computer or other programmable data processing device, these instructions create means for implementing the functions / actions specified in one or more blocks of the flowchart and / or block diagram. These computer-readable program instructions can also be stored in a computer-readable storage medium that causes a computer, programmable data processing device, and / or other device to operate in a particular manner; thus, the computer-readable medium storing the instructions comprises an article of manufacture that includes instructions for implementing aspects of the functions / actions specified in one or more blocks of the flowchart and / or block diagram.

[0112] Computer-readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other device to cause a series of operational steps to be performed on the computer, other programmable data processing apparatus, or other device to produce a computer-implemented process, thereby causing the instructions executed on the computer, other programmable data processing apparatus, or other device to perform the functions / actions specified in one or more boxes of a flowchart and / or block diagram.

[0113] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of devices, methods, and computer program products according to various embodiments of the present disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of an instruction containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than those shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

[0114] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

[0115] The terminology used herein is chosen to best explain the principles, practical applications, or technological improvements to the various embodiments, or to enable those skilled in the art to understand the embodiments disclosed herein.

[0116] The above are merely optional embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A spray dyeing system, characterized in that, include: Support device; A nozzle, comprising multiple nozzle needles, is used to spray the liquid to be sprayed; A drive unit, mounted on a support unit, is configured to drive at least one of a nozzle and a maintenance device, such that the nozzle and the maintenance device cooperate. as well as Maintenance devices, including at least: The nozzle cleaning unit is configured to clean at least the outer surface of the nozzle needles of the nozzle from the liquid to be sprayed.

2. The spray dyeing system according to claim 1, characterized in that, The nozzle cleaning unit includes a suction unit, wherein the suction includes at least a suction nozzle for suctioning the nozzle needle; The driving device includes a nozzle driving unit configured to drive at least the nozzle of the suction unit such that the nozzle corresponds to a target nozzle among a plurality of nozzles.

3. The spray dyeing system according to claim 2, characterized in that, The suction unit is configured to suction the target nozzle when the nozzle sprays the liquid to be sprayed.

4. The spray dyeing system according to claim 1, characterized in that, The nozzle cleaning unit also includes: a brush unit; The drive unit is also configured to drive at least one of the nozzle and the brush unit such that the nozzle and the brush unit move relative to each other, so that the brush unit at least brushes the outer surface of the nozzle.

5. The spray dyeing system according to claim 4, characterized in that, The brush unit includes a brush roller, and the outer surface of the brush roller is provided with bristles; The drive unit also includes: The brush drive unit is configured to drive the brush roller to rotate.

6. The spray dyeing system according to claim 5, characterized in that, The drive unit also includes: The nozzle drive unit is configured to drive the nozzle to reciprocate within a predetermined stroke range while the brush drive unit drives the brush roller to rotate.

7. The spray dyeing system according to claim 1, characterized in that, Also includes: A liquid supply device, connected to the nozzle, is configured to supply the liquid to be sprayed to the nozzle; The maintenance device also includes: a humidification unit; The drive unit is also configured to drive at least one of the spray nozzle and the moisturizing unit so that the spray nozzle and the moisturizing unit cooperate. The liquid supply device is also configured such that the supplied liquid to be sprayed is injected into the humidifying unit through the nozzle, and such that the liquid to be sprayed in the humidifying unit at least submerges the tip of the nozzle, wherein the liquid to be sprayed is a humidifying liquid.

8. The spray dyeing system according to claim 7, characterized in that, The maintenance device also includes a reflux unit, which is connected between the humidifying unit and the liquid supply device and is configured to allow the liquid to be sprayed in the humidifying unit to flow back to the liquid supply device via the reflux unit. The liquid supply device is also configured to supply the liquid to be sprayed back to the liquid supply device to the nozzle.

9. The spray dyeing system according to claim 7, characterized in that, The humidification unit includes a humidification tank with a drain outlet at the bottom, which can be closed and opened.

10. The spray dyeing system according to claim 9, characterized in that, The maintenance device also includes: A first liquid receiving tank is arranged side-by-side with the humidification unit, and the bottom of the first liquid receiving tank has a discharge port aligned with the second liquid receiving tank; and The second liquid receiving tank is located below the first liquid receiving tank and the moisturizing unit, and the second liquid receiving tank at least covers the area corresponding to the first liquid receiving tank and the moisturizing unit.

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