An online cleaning device for a print head of a code inkjet printer

Abstract

The present application belongs to the technical field of printing equipment, and particularly relates to an online cleaning device for a printing head of a code inkjet printer, comprising a cleaning cloth with a closed structure, at least four transmission rollers arranged in dispersion, a cleaning mechanism, and a driving roller. The cleaning cloth is wrapped around the printing head body and adheres to the bottom of the printing head body. Each transmission roller adheres to the inside of the cleaning cloth and is used for tensioning the cleaning cloth. The cleaning mechanism comprises a spray cleaning mechanism, an extrusion dehydration mechanism, and a drying mechanism arranged in sequence. The cleaning cloth passes through the spray cleaning mechanism, the extrusion dehydration mechanism, and the drying mechanism in sequence. The driving roller is adhered to the cleaning cloth and is used for driving the movement of the cleaning cloth, so that manual cleaning is not required, the problem of damage to the printing head caused by unstable manual operation is avoided, the printing head does not need to be removed and cleaned in a very complicated manner, the labor cost is reduced, the risk of damage to the printing head is reduced, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of printing equipment, and particularly relates to an online cleaning device for a printing head of a code jet printer. BACKGROUND

[0002] At present, a code jet printer is usually used to jet print a two-dimensional code on a package for querying commodity information and anti-counterfeiting. For example, a two-dimensional code is jet printed on a cigarette label. Before being cut, a plurality of cigarette labels are still an entire sheet, which is conveyed in a tensioned state by a roller conveyor and passes below a jet printing head to jet print a two-dimensional code. During the jet printing process, the appearance of the two-dimensional code may be continuously provided with white lines due to contamination at the nozzle of the jet printing head, which may occur or not occur, resulting in unqualified two-dimensional code quality. At this time, the jet printing head needs to be cleaned.

[0003] Since the height difference between the jet printing head and the packaging paper (cigarette label) is millimeter level, the space is very small. The methods for cleaning the jet printing head generally include the following:

[0004] Using cleaning liquid: if the jet printing head is blocked by ink during production, the jet printing head is generally raised by a certain distance, and then a special towel soaked with cleaning liquid is used to clean the jet printing head manually;

[0005] Using ultrasonic cleaning: this cleaning method needs to be equipped with a special ultrasonic cleaner. During cleaning, the jet printing head needs to be disassembled, and impurities and ink in the jet printing head are removed through ultrasonic vibration. The cleaning effect is good, but the cost is high.

[0006] It should be noted that the cleaning of the jet printing head requires accurate operation, and manual operation is avoided as much as possible to avoid unnecessary damage to the jet printing head. The operation space of the worker when scrubbing the jet printing head is narrow, and it is more difficult to scrub the jet printing head located in the middle position. Meanwhile, the process of using ultrasonic cleaning is complicated, and the disassembly and assembly of the jet printing head increase the risk of damaging the jet printing head. The above two commonly used cleaning methods need to spend a long time, which will affect the production efficiency. SUMMARY

[0007] The technical problem to be solved by the present application is to provide an online cleaning device for a printing head of a code jet printer, which reduces the cleaning difficulty of the jet printing head and improves the production efficiency.

[0008] The present application provides an online cleaning device for a printing head of a code jet printer, which comprises:

[0009] The cleaning cloth in the closed structure surrounds the jet printing head body and is attached to the bottom of the jet printing head body;

[0010] The at least four transmission rollers are arranged in a scattered manner, and each transmission roller is attached to the inside of the cleaning cloth and is used for tensioning the cleaning cloth;

[0011] The cleaning mechanism comprises a spraying mechanism, a squeezing and dehydrating mechanism and a drying mechanism arranged in sequence, and the cleaning cloth passes through the spraying mechanism, the squeezing and dehydrating mechanism and the drying mechanism in sequence.

[0012] The driving roller is in contact with the cleaning cloth and is used to drive the movement of the cleaning cloth.

[0013] Optionally, the spraying mechanism comprises a housing one and a plurality of nozzles arranged in the housing one, and the housing one is connected with a water drainage pipeline.

[0014] Optionally, the squeezing and dehydrating mechanism comprises a housing two and a plurality of squeezing rollers arranged in the housing two in an up-down staggered manner, and each of the squeezing rollers is in transmission connection with the cleaning cloth.

[0015] Optionally, at least one of the plurality of squeezing rollers is a driving roller.

[0016] Optionally, the drying mechanism comprises a housing three and a hot air pipe connected to the housing three.

[0017] Optionally, the cleaning device further comprises a mounting rack spanning the wrapping paper, and the cleaning mechanism and the driving rollers are rigidly connected to the mounting rack.

[0018] Optionally, the bottom of the mounting rack is provided with a guide rail, and the mounting rack is fastened to the guide rail by bolts.

[0019] Optionally, the number of the driving rollers is four, and the four driving rollers are arranged in a rectangular array, two upper driving rollers are located at two ends of the cleaning mechanism, and two lower driving rollers are located at two sides of the printing head body, and at least one of the four driving rollers is a driving roller.

[0020] Optionally, the number of the driving rollers is six, and the six driving rollers are divided into three groups above and below, two upper driving rollers are located at two ends of the cleaning mechanism, two lower driving rollers are located at two sides of the printing head body and are respectively connected with height adjusting mechanisms, and two middle driving rollers are connected with a transverse adjusting mechanism.

[0021] Optionally, the transverse adjusting mechanism comprises a linear actuator one and a slide rail pair one arranged transversely, the middle driving roller is rigidly connected to the slide rail pair one, the output end of the linear actuator one is rigidly connected to the middle driving roller, the height adjusting mechanism comprises a linear actuator two and a slide rail pair two, the lower driving roller is rigidly connected to the slide rail pair two, and the output end of the linear actuator two is rigidly connected to the lower driving roller.

[0022] The beneficial effects of this invention are that the cleaning cloth is driven by a drive mechanism and supported by at least four transmission rollers, rotating around the printhead body. The cleaning cloth is cleaned and dried (without dripping) after passing through a spray washing mechanism, a squeezing and dehydrating mechanism, and a drying mechanism. A certain amount of cleaning liquid is retained on the cleaning cloth. Because the cleaning cloth is relatively thin, it can wipe away impurities and dry ink through the gap between the printhead and the packaging paper (cigarette label) when the cleaning cloth is attached to the bottom of the printhead body. Thus, manual cleaning is not required, avoiding the problem of damage to the printhead caused by unstable manual operation. It also eliminates the need for cumbersome disassembly and cleaning of the printhead, reducing labor costs and the risk of damaging the printhead, while improving production efficiency.

[0023] In addition, a single cleaning cloth can clean multiple printheads simultaneously (inkjet printers typically have multiple printheads); the drive mechanism can control the speed of the cleaning cloth for better cleaning results. Furthermore, the washing mechanism can spray cleaning agent or water onto the cleaning cloth, effectively cleaning both the cloth and removing cleaning agent from the printheads; the drying mechanism can be selectively activated. If the squeezing and dehydration mechanism prevents dripping from the cleaning cloth, the drying mechanism does not need to be activated. After the printheads are cleaned, the drying mechanism can be activated to dry the cleaning cloth for future use. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the cleaning device provided in an embodiment of the present invention;

[0025] Figure 2 A perspective view of the cleaning device provided in the embodiments of the present invention Figure 1 ;

[0026] Figure 3 A perspective view of the cleaning device provided in the embodiments of the present invention Figure 2 ;

[0027] Figure 4 This is a partial structural schematic diagram of the cleaning mechanism provided in an embodiment of the present invention.

[0028] In the diagram: 10. Cleaning cloth; 20. Drive roller; 21. Roller body; 22. Rod body; 30. Cleaning mechanism; 31. Spraying mechanism; 311. Chamber 1; 312. Nozzle; 32. Squeeze dewatering mechanism; 321. Squeeze roller; 322. Chamber 2; 33. Drying mechanism; 331. Chamber 3; 40. Mounting frame; 41. Guide rail; 42. Lateral adjustment mechanism; 421. Linear driver 1; 422. Slide rail pair 1; 43. Height adjustment mechanism; 431. Linear driver 2; 432. Slide rail pair 2; 50. Print head body; 60. Packaging paper. Detailed Implementation

[0029] like Figures 1-3As shown, the online cleaning device for the inkjet head of the ink-jet printer provided by the embodiment of the present application comprises a closed cleaning cloth 10, at least four transmission rollers 20 arranged in dispersion, a cleaning mechanism 30 and a driving roller. The cleaning cloth 10 is wrapped around the inkjet head body 50 and adheres to the bottom of the inkjet head body 50. Each transmission roller 20 adheres to the inside of the cleaning cloth 10 and is used to tension the cleaning cloth 10. The cleaning mechanism 30 comprises a spray cleaning mechanism 31, a squeezing dehydration mechanism 32 and a drying mechanism 33 arranged in sequence. The cleaning cloth 10 passes through the spray cleaning mechanism 31, the squeezing dehydration mechanism 32 and the drying mechanism 33 in sequence. The driving roller adheres to the cleaning cloth 10 and is used to drive the movement of the cleaning cloth 10.

[0030] Compared with the prior art, the online cleaning device for the inkjet head of the ink-jet printer provided by the present application drives the cleaning cloth 10 through the driving mechanism. The cleaning cloth 10 is supported and driven by the at least four transmission rollers 20 and rotates around the inkjet head body 50. The cleaning cloth 10 is cleaned and dried (without dripping) by passing through the spray cleaning mechanism 31, the squeezing dehydration mechanism 32 and the drying mechanism 33. A certain amount of cleaning liquid is retained on the cleaning cloth 10. Since the cleaning cloth 10 is relatively thin, it can pass through the gap between the inkjet head and the packaging paper 60 (cigarette label). When the cleaning cloth 10 adheres to the bottom of the inkjet head body 50, the impurities and dry ink are wiped off, so that manual cleaning is not required. The problem of damage to the inkjet head caused by unstable manual operation is avoided. The inkjet head does not need to be removed and cleaned, which reduces the labor cost and the risk of damaging the inkjet head. At the same time, the production efficiency is improved.

[0031] In addition, one cleaning cloth 10 can clean multiple inkjet heads (usually multiple inkjet heads are arranged on the ink-jet printer) at the same time. The driving mechanism can control the movement speed of the cleaning cloth 10 to achieve better cleaning effect. In addition, the spray cleaning mechanism 31 can spray cleaning agent to the cleaning cloth 10 or clean water to the cleaning cloth 10, which can clean the cleaning cloth 10 and remove the cleaning agent on the inkjet head. The drying mechanism 33 can be selectively opened. When the squeezing dehydration mechanism 32 does not drip liquid on the cleaning cloth 10, the drying mechanism 33 does not need to be opened. After the inkjet head is cleaned, the drying mechanism 33 can be opened to dry the cleaning cloth 10 for next use.

[0032] In the embodiment, the cleaning cloth 10 is flexible and can be folded and placed above the cleaning mechanism 30 by being separated from the transmission rollers 20. Therefore, the entire cleaning device does not need to be removed, so that the ink-jet printer can be put into production as soon as possible. When the inkjet head is blocked next time, the cleaning device can be quickly started, which improves the production efficiency.

[0033] It should be noted that the existing inkjet head can automatically adjust the height. The bottom surface of the inkjet head can be adhered to the cleaning cloth 10 by means of this function.

[0034] In the embodiment, please refer toFigure 4 The spraying mechanism 31 comprises a housing 311 and a plurality of nozzles 312 arranged in the housing 311, and the housing 311 is connected with a water drainage pipeline.

[0035] Specifically, the housing 311 is a square shell as a whole, and has long strip-shaped openings at two ends for the cleaning cloth 10 to enter and exit. The inner bottom of the housing 311 is provided with a plurality of nozzles 312, which can be distributed along one or more straight lines. The plurality of nozzles 312 are connected in parallel to a water supply pipeline, and the water supply pipeline is connected with a solenoid valve and a water pump. The water drainage pipeline is fixedly connected to the bottom of the housing 311 for timely draining water or cleaning agent.

[0036] In this embodiment, the squeezing dehydration mechanism 32 comprises a housing 322 and a plurality of squeezing rollers 321 arranged in the housing 322 in an up-down staggered manner, and each squeezing roller 321 is in transmission connection with the cleaning cloth 10.

[0037] Specifically, the housing 322 is fixedly connected with one end of the housing 311 as a whole, and also has long strip-shaped openings for the cleaning cloth 10 to enter and exit. The squeezing rollers 321 are rotationally connected to the inner wall of the housing 322. The cleaning cloth 10 is wound around the plurality of squeezing rollers 321 in an up-down manner, and the excess liquid is squeezed out by the adhesion of the cleaning cloth 10 and the squeezing rollers 321. Different numbers of squeezing rollers 321 can be designed to make the cleaning cloth 10 not drip. In addition, the housing 322 and the housing 311 can be connected through, and share one water drainage pipeline, or another water drainage pipeline can be arranged.

[0038] In this embodiment, at least one of the plurality of squeezing rollers 321 is a driving roller. Specifically, a driving device can be connected to the end of the squeezing roller 321 as the driving roller. The driving device can be a speed reducer motor, which is a conventional driving structure. When the driving roller rotates, it drives the cleaning cloth 10 to move by the friction with the cleaning cloth 10.

[0039] In this embodiment, the drying mechanism 33 comprises a housing 331 and a hot air pipe connected to the housing 331.

[0040] Specifically, the housing 331 is fixedly connected with one end of the housing 322 as a whole, and also has long strip-shaped openings for the cleaning cloth 10 to enter and exit. A plurality of hot air pipes are fixedly arranged at the bottom and / or side wall of the housing 331. The hot air pipes are connected with a hot air machine for drying the cleaning cloth 10.

[0041] In this embodiment, the cleaning device further comprises a mounting rack 40 which spans the packaging paper 60, and the cleaning mechanism 30 and the transmission roller 20 are rigidly connected to the mounting rack 40.

[0042] Specifically, according to the packaging paper 60 in the form of a roll before printing, the packaging paper 60 is continuously pulled out during printing, therefore, in order to better stabilize the cleaning mechanism 30 and the transmission roller 20, the mounting rack 40 is in a frame structure, avoids interference with the inkjet printer, the mounting rack 40 can be fixed on the ground, the cleaning mechanism 30 is fastened on the mounting rack 40 through connecting rods or connecting plates and bolts, and the cleaning mechanism 30 is located above the printing head body 50; the transmission roller 20 is composed of a roller body 21 and a rod body 22, the roller body 21 is rotationally connected with the rod body 22, and the rod body 22 is rigidly connected to a corresponding position of the mounting rack 40.

[0043] In one embodiment, the bottom of the mounting rack 40 is provided with a guide rail 41, and the mounting rack 40 is fastened with the guide rail 41 through bolts.

[0044] Specifically, the guide rail 41 is in a double straight line type, the guide rail 41 is fixedly arranged on the ground, and the two sides of the mounting rack 40 are in embedded sliding fit with the guide rail 41; the mounting rack 40 can be moved to a specified position by taking out the bolts, that is, the cleaning device can be moved to a specified position, when in use, the cleaning cloth 10 can be located below the printing head, when not in use, the cleaning cloth 10 can be away from the printing head, so that the position of the cleaning cloth 10 can be quickly switched, and the trouble of disassembling and assembling the cleaning cloth 10 is avoided.

[0045] In this embodiment, please refer to Figure 2 , the number of the transmission rollers 20 is four, the four transmission rollers 20 are distributed in a rectangular array, the two transmission rollers 20 on the top are located at the two ends of the cleaning mechanism 30, and the two transmission rollers 20 on the bottom are located at the two sides of the printing head body 50; at least one of the four transmission rollers 20 is a driving roller, in this way, the cleaning cloth 10 located below the printing head body 50 is in a generally flat state, which is beneficial to keeping the force on the plurality of printing head bodies 50 more uniform, and can also reduce the movement resistance of the cleaning cloth 10.

[0046] In another embodiment, please refer to Figure 3Because the scheme of four transmission rollers 20, it is difficult to realize the adjustment of the height of the cleaning cloth 10 located below the print head body 50, and the print head body 50 also needs to adjust the height cooperation, and after cleaning, it also needs to adjust back to the original height to carry out the printing operation, not only the process is complicated and affects the production efficiency, in addition, because the distance between the print head body 50 and the guarantee paper has a great influence on the printing quality, the print head body 50 requires high-precision adjustment, and the height needs to be adjusted every time the print head body 50 is cleaned, which will increase the wear of the adjustment components of the print head body 50, and reduce the adjustment precision of the print head body 50. Therefore, the number of transmission rollers 20 is six, and the six transmission rollers 20 are divided into three groups above and below, the two transmission rollers 20 above are located at both ends of the cleaning mechanism 30, and the two transmission rollers 20 below are located at both sides of the print head body 50 and are respectively connected with the height adjustment mechanism 43, and the two transmission rollers 20 in the middle are connected with the transverse adjustment mechanism 42.

[0047] Specifically, the two transmission rollers 20 above are fixedly connected to the mounting frame 40, one of which is a driving roller, the transmission rollers 20 in the middle and below are rigidly connected to the transverse adjustment mechanism 42 and the height adjustment mechanism 43 respectively, the transverse adjustment mechanism 42 and the height adjustment mechanism 43 are fixedly connected to the mounting frame 40, the two transverse adjustment mechanisms 42 drive the two transmission rollers 20 in the middle to move towards each other, at the same time, the two height adjustment mechanisms 43 drive the two transmission rollers 20 below to move upwards or downwards synchronously, when the two transmission rollers 20 in the middle expand the cleaning cloth 10 outward, then the two transmission rollers 20 below move upwards, so that the cleaning cloth 10 moves upwards under the condition of maintaining sufficient tension, to adhere to the bottom of the print head body 50, when the two transmission rollers 20 in the middle move inward, then the two transmission rollers 20 below move downwards, so that the cleaning cloth 10 can also move downwards under the condition of maintaining sufficient tension, and the cleaning cloth 10 can be separated from the bottom of the print head body 50, and the cleaning cloth 10 can avoid touching the packaging paper 60. In addition, the cleaning cloth 10 can adapt to the print head body 50 of different heights through the transverse adjustment mechanism 42 and the height adjustment mechanism 43.

[0048] In one embodiment, the transverse adjustment mechanism 42 includes a linear driver one 421 and a slide rail pair one 422 arranged transversely, the transmission roller 20 in the middle is rigidly connected with the slide rail pair one 422, and the output end of the linear driver one 421 is rigidly connected with the transmission roller 20 in the middle, and the height adjustment mechanism 43 includes a linear driver two 431 and a slide rail pair two 432, the transmission roller 20 below is rigidly connected with the slide rail pair two 432, and the output end of the linear driver two 431 is rigidly connected with the transmission roller 20 below.

[0049] Specifically, the slide rail pair one 422 and the slide rail pair two 432 are arranged perpendicular to each other, the slide rail pair one 422 and the slide rail pair two 432 can be fixed on the corresponding positions of the mounting frame 40 by bolts or welding, the linear driver one 421 can be fixedly connected on the mounting frame 40 or the slide rail pair one 422, the driving direction of the linear driver one 421 is consistent with the guiding direction of the slide rail pair one 422, so that the linear driver one 421 drives the corresponding transmission roller 20 to move along the slide rail pair one 422, the slide rail pair one 422 can ensure the stability of the transmission roller 20, and avoid obvious shaking, similarly, the linear driver two 431 and the slide rail pair two 432 adopt similar connection and matching modes, so details are not described herein.

[0050] Those skilled in the art should understand that the above discussion of any embodiment is only exemplary, and is not intended to limit the protection scope of the present application to these examples; under the idea of the present application, the above embodiments or technical features in different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of one or more embodiments of the present application as described above, which are not provided in details for the sake of simplicity.

[0051] One or more embodiments of the present application are intended to cover all such alternatives, modifications and variations falling within the broad scope of the present application. Therefore, any omission, modification, equivalent replacement, improvement, etc. made in the spirit and principle of one or more embodiments of the present application should be included in the protection scope of the present application.

Claims

1. An online cleaning device for the printhead of an inkjet printer, characterized in that, include: A closed-structure cleaning cloth (10) surrounds the printhead body (50) and adheres to the bottom of the printhead body (50); At least four drive rollers (20) are distributed in a dispersed manner, each drive roller (20) is attached to the inside of the cleaning cloth (10) for tensioning the cleaning cloth (10). A cleaning mechanism (30) comprising a spray washing mechanism (31), a squeeze dehydration mechanism (32), and a drying mechanism (33) arranged sequentially, wherein the cleaning cloth (10) passes sequentially through the spray washing mechanism (31), the squeeze dehydration mechanism (32), and the drying mechanism (33); and A drive roller, which is in contact with the cleaning cloth (10) and is used to drive the cleaning cloth (10) to move; The number of transmission rollers (20) is six. The six transmission rollers (20) are divided into three groups, upper and lower. The two upper transmission rollers (20) are located at both ends of the cleaning mechanism (30), the two lower transmission rollers (20) are located on both sides of the inkjet head body (50) and are respectively connected to the height adjustment mechanism (43), and the two middle transmission rollers (20) are connected to the horizontal adjustment mechanism (42).

2. The online cleaning device for the inkjet head of the inkjet printer according to claim 1, characterized in that, The spraying mechanism (31) includes a chamber (311) and a plurality of nozzles (312) disposed in the chamber (311), and the chamber (311) is connected to a drain pipe.

3. The online cleaning device for the inkjet printer head according to claim 1, characterized in that, The extrusion dehydration mechanism (32) includes a chamber two (322) and a plurality of extrusion rollers (321) arranged vertically and horizontally within the chamber two (322), each of the extrusion rollers (321) being connected to the cleaning cloth (10).

4. The online cleaning device for the printhead of the inkjet printer according to claim 3, characterized in that, At least one of the plurality of extrusion rollers (321) is a drive roller.

5. The online cleaning device for the printhead of the inkjet printer according to claim 1, characterized in that, The drying mechanism (33) includes a three-compartment chamber (331) and a hot air duct connected to the three-compartment chamber (331).

6. The online cleaning device for the printhead of the inkjet printer according to any one of claims 1-5, characterized in that, It also includes a mounting frame (40) spanning the packaging paper (60), and the cleaning mechanism (30) and the drive roller (20) are rigidly connected to the mounting frame (40).

7. The online cleaning device for the printhead of the inkjet printer according to claim 6, characterized in that, The bottom of the mounting bracket (40) is provided with a guide rail (41), and the mounting bracket (40) and the guide rail (41) are fastened together by bolts.

8. The online cleaning device for the inkjet printer head according to claim 1, characterized in that, The number of transmission rollers (20) is four, and the four transmission rollers (20) are arranged in a rectangular array. The two upper transmission rollers (20) are located at both ends of the cleaning mechanism (30), and the two lower transmission rollers (20) are located on both sides of the print head body (50). At least one of the four transmission rollers (20) is a drive roller.

9. The online cleaning device for the printhead of the inkjet printer according to claim 1, characterized in that, The lateral adjustment mechanism (42) includes a linear actuator (421) and a slide rail pair (422) arranged laterally. The middle transmission roller (20) is rigidly connected to the slide rail pair (422). The output end of the linear actuator (421) is rigidly connected to the middle transmission roller (20). The height adjustment mechanism (43) includes a linear actuator (431) and a slide rail pair (432). The lower transmission roller (20) is rigidly connected to the slide rail pair (432). The output end of the linear actuator (431) is rigidly connected to the lower transmission roller (20).

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