Digital printing equipment negative pressure ink supply humidifying disc

Abstract

The utility model provides a digital printing equipment negative pressure ink supply moisturizing disc relates to digital printing equipment technical field, including moisturizing disc, the inside of moisturizing disc is provided with closing subassembly, the bottom end left and right sides of moisturizing disc all are fixedly connected with elastic connecting piece, the utility model discloses through the cooperation of closing subassembly, annular sealing protruding and liquid storage cotton, realizes efficient sealing and moisturizing, the electric motor drive screw rod rotation of closing subassembly, drives threaded slide plate to move in the connecting sliding slot, makes the sliding baffle slide in the spray head placement groove through the pull rod, the spray head placement area is closed when the spray head works, and the close adhesion of annular sealing protruding and spray head is cooperated, effectively insulates the dust, impurity of outside, prevents moisturizing liquid evaporation, liquid storage cotton absorbs the moisturizing liquid in liquid storage cavity, continuously provides the humid environment for the spray head, reduces the spray head dry clogging risk, guarantees the spray head clean, promotes the printing quality and spray head life.

Description

Technical Field

[0001] This utility model relates to the field of digital printing equipment technology, and in particular to a negative pressure ink supply and humidification tray for digital printing equipment. Background Technology

[0002] Digital printing equipment is a device that uses digital signals to control the printhead and spray ink directly onto the surface of the substrate to print patterns or text. Compared with traditional printing methods, digital printing has advantages such as no need for plate making, fast printing speed, and the ability to achieve personalized customization. It is widely used in advertising production, textile printing, packaging printing and other fields.

[0003] In digital printing equipment, a negative pressure ink supply system is used because it can stably supply ink to the printhead, avoiding problems such as printhead clogging and uneven ink spraying caused by unstable ink pressure. The negative pressure environment allows the ink to maintain a certain fluidity in the pipeline, while preventing ink from dripping randomly when not printing. The humidification tray, as an important component that works with the printhead in digital printing equipment, mainly functions to provide a humidification environment for the printhead when it stops working, preventing the ink inside the printhead from drying out and clogging the printhead, and ensuring that the printhead can spray ink normally when it resumes operation. The negative pressure ink supply system ensures the stability of ink supply, while the humidification tray maintains the good working condition of the printhead, together ensuring the normal operation of the digital printing equipment.

[0004] The negative pressure ink supply and humidification tray of a current digital printing device has the following shortcomings:

[0005] Most humidifier trays lack effective sealing measures when the printhead is not in use, allowing external dust and impurities to easily enter the printhead placement area, mix with the humidifier, and contaminate the printhead. Furthermore, the humidifier is prone to evaporation, resulting in poor humidification, frequent drying and clogging, severely impacting print quality and printhead lifespan. Traditional humidifier trays rely on a fixed structure for connection to the printhead, which is ill-suited to the slight vibrations and component tolerances during equipment operation, leading to loose fits and easy leakage of the humidifier. This not only results in waste but also the leakage liquid may seep into the equipment, damaging other precision components. Thirdly, existing humidifier trays use relatively crude methods for storing and replenishing the humidifier, lacking effective filtration and precise replenishment mechanisms. Impurities in the storage chamber cannot be removed in time, easily clogging the infusion tube, and it is difficult to ensure that the printhead is always immersed in the appropriate amount of humidifier, resulting in unstable humidification effects. Utility Model Content

[0006] This invention proposes a negative pressure ink supply and moisturizing tray for digital printing equipment. Through innovative design of structures such as closed components, elastic connectors, and liquid storage and filtration systems, it effectively solves problems such as moisturizing liquid contamination, leakage, and poor moisturizing effect, thereby improving printhead lifespan and print quality.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a negative pressure ink supply and humidification tray for a digital printing device, comprising a humidification tray, wherein a closing component is provided on the inner side of the humidification tray, and elastic connectors are fixedly connected to the left and right sides of the bottom end of the humidification tray.

[0008] The moisturizing tray includes a tray body, which is fixedly connected to the top of an elastic connector. A nozzle placement groove is provided at the center of the top of the tray body. An annular sealing protrusion is fixedly connected to the top of the tray body. A liquid storage cotton is fixedly connected to the bottom of the inner surface of the nozzle placement groove. A liquid storage cavity is provided at the bottom of the inner side of the tray body. Several connection holes are provided at the top of the liquid storage cavity. The top of the connection holes extends to the lower surface of the nozzle placement groove. A filter screen is fixedly connected to the middle of the inner wall of the liquid storage cavity. Infusion tubes are fixedly connected to the bottom of both sides of the inner wall of the liquid storage cavity. The top of the infusion tubes extends to the bottom of the liquid storage cotton. An infusion pump is fixedly connected to the middle of the infusion tubes.

[0009] Preferably, the closing assembly includes an electric motor, a connecting groove is provided on the upper inner wall of the nozzle placement slot, the electric motor is fixedly connected to the upper right side of the disc body, and the output shaft of the electric motor passes through the interior of the connecting groove and is fixedly connected to a transmission screw.

[0010] Preferably, the outer surface of the transmission screw is threadedly connected to a threaded slide plate, which is slidably connected to the right side of the inner surface of the connecting groove. Both the front and rear ends of the top of the threaded slide plate are movably connected to a pull rod, and the end of the pull rod away from the threaded slide plate is movably connected to a sliding baffle. The two sliding baffles are respectively slidably connected to the front and rear sides of the inner surface of the nozzle placement groove.

[0011] Preferably, the elastic connector includes a transverse U-shaped frame, and fixing bolts are rotatably connected to both the front and rear sides of the inner lower surface of the transverse U-shaped frame, with the bottom end of the fixing bolts extending through to the bottom of the transverse U-shaped frame.

[0012] Preferably, the top front and rear sides of the transverse U-shaped frame are slidably connected with connecting slide columns. The top of the connecting slide column is fixedly connected to the lower surface of the disc body, and the bottom of the connecting slide column extends through to the inner side of the transverse U-shaped frame and is fixedly connected to a limiting plate.

[0013] Preferably, a clamping spring is provided on the outer side of the connecting slide column, the top end of the clamping spring is fixedly connected to the lower surface of the disc body, and the bottom end of the clamping spring is fixedly connected to the upper surface of the transverse U-shaped frame.

[0014] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0015] 1. In this utility model, efficient sealing and moisturizing are achieved through the cooperation of the closing component, the annular sealing protrusion, and the liquid storage cotton. The electric motor of the closing component drives the transmission screw to rotate, which moves the threaded slide plate in the connecting groove. The sliding baffle slides in the printhead placement groove by pulling the rod. When the printhead is working, the printhead placement area is sealed off. The tight fit between the annular sealing protrusion and the printhead effectively isolates external dust and impurities and prevents the evaporation of moisturizing liquid. The liquid storage cotton absorbs the moisturizing liquid in the storage cavity, continuously providing a moist environment for the printhead, reducing the risk of printhead drying and clogging, ensuring printhead cleanliness, and improving printing quality and printhead lifespan.

[0016] 2. In this utility model, the cooperation of the elastic connector, the infusion tube, and the filter screen improves the sealing performance and moisturizing stability. The tightening spring of the elastic connector provides elastic support, allowing the disc to move adaptively up and down on the transverse U-shaped frame via the connecting slide column, closely fitting the nozzle and reducing gaps caused by equipment vibration or component tolerances, thus preventing leakage of moisturizing liquid. The filter screen intercepts impurities in the liquid storage chamber, preventing blockage of the infusion tube. The infusion pump precisely controls the delivery of moisturizing liquid to the liquid storage cotton through the infusion tube, ensuring that the nozzle is always immersed in an appropriate amount of clean moisturizing liquid, maintaining a stable moisturizing effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the negative pressure ink supply and humidification disc of the digital printing device of this utility model;

[0018] Figure 2 This is a cross-sectional structural diagram of the moisturizing tray of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the closure component of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the elastic connector of this utility model.

[0021] Legend: 1. Humidifying tray; 11. Tray body; 12. Nozzle placement slot; 13. Annular sealing protrusion; 14. Liquid storage cotton; 15. Liquid storage chamber; 16. Connecting hole; 17. Filter screen; 18. Infusion tube; 19. Infusion pump; 110. Connecting slide; 2. Closure assembly; 21. Electric motor; 22. Transmission screw; 23. Threaded sliding plate; 24. Pulling rod; 25. Sliding baffle; 3. Elastic connector; 31. Horizontal U-shaped frame; 32. Fixing bolt; 33. Connecting slide column; 34. Tightening spring; 35. Limiting plate. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0024] Example 1: As Figure 1 and Figure 2 As shown, this utility model provides a technical solution: including a moisturizing tray 1, a closing component 2 is provided on the inner side of the moisturizing tray 1, and elastic connectors 3 are fixedly connected to the left and right sides of the bottom end of the moisturizing tray 1. The moisturizing tray 1 includes a tray body 11, which is fixedly connected to the top of the elastic connector 3. A nozzle placement groove 12 is opened at the center of the top of the tray body 11. An annular sealing protrusion 13 is fixedly connected to the top of the tray body 11. A liquid storage cotton 14 is fixedly connected to the bottom of the inner surface of the nozzle placement groove 12. A liquid storage cavity 15 is opened at the bottom of the inner side of the tray body 11. A plurality of connecting holes 16 are opened at the top of the liquid storage cavity 15. The top of the connecting holes 16 penetrates to the lower surface of the nozzle placement groove 12. A filter screen 17 is fixedly connected to the middle of the inner wall of the liquid storage cavity 15. An infusion tube 18 is fixedly connected to the bottom of the left and right sides of the inner wall of the liquid storage cavity 15. The top of the infusion tube 18 penetrates to the bottom of the liquid storage cotton 14. An infusion pump 19 is fixedly connected to the middle of the infusion tube 18.

[0025] The overall effect achieved by Embodiment 1 is as follows: the reservoir 15 is used to store the moisturizing liquid, the filter screen 17 can effectively intercept impurities in the moisturizing liquid, and prevent impurities from entering the infusion tube 18 and the nozzle placement slot 12 and causing blockage. After the infusion pump 19 is started, it can deliver the moisturizing liquid in the reservoir 15 to the reservoir cotton 14 through the infusion tube 18. After the reservoir cotton 14 absorbs the moisturizing liquid, it can provide a humid environment for the nozzle placed in the nozzle placement slot 12. The annular sealing protrusion 13 can fit tightly with the nozzle, initially enhancing the sealing performance, reducing the evaporation of the moisturizing liquid and the entry of external impurities, ensuring that the nozzle is in a good moisturizing state, and maintaining the stable performance of the nozzle.

[0026] Example 2: As Figure 2 and Figure 3As shown, this utility model provides a technical solution: the closing component 2 includes an electric motor 21, a connecting groove 110 is provided on the upper inner wall of the nozzle placement groove 12, the electric motor 21 is fixedly connected to the upper right side of the disc body 11, the output shaft of the electric motor 21 passes through the interior of the connecting groove 110 and is fixedly connected to a transmission screw 22, the outer surface of the transmission screw 22 is threadedly connected to a threaded slide plate 23, the threaded slide plate 23 is slidably connected to the right side of the inner surface of the connecting groove 110, the top front and rear ends of the threaded slide plate 23 are movably connected to a pulling rod 24, the end of the pulling rod 24 away from the threaded slide plate 23 is movably connected to a sliding baffle 25, and the two sliding baffles 25 are respectively slidably connected to the front and rear sides of the inner surface of the nozzle placement groove 12;

[0027] The effect achieved by the entire embodiment 2 is as follows: When the nozzle is idle, the electric motor 21 is started, and the electric motor 21 drives the transmission screw 22 to rotate. Since the threaded slide plate 23 is threadedly connected to the transmission screw 22 and can only slide left and right under the restriction of the connecting slide groove 110, when the transmission screw 22 rotates, the threaded slide plate 23 will move to the left in the connecting slide groove 110. During the movement of the threaded slide plate 23, the sliding baffle 25 is pulled by the pull rod 24 to slide in the nozzle placement groove 12 until the two sliding baffles 25 approach each other and close the top opening of the nozzle placement groove 12, isolating external dust and impurities and preventing the evaporation of moisturizing liquid.

[0028] Example 3: As Figure 4 As shown, this utility model provides a technical solution: the elastic connector 3 includes a transverse U-shaped frame 31, and fixing bolts 32 are rotatably connected to both the front and rear sides of the inner lower surface of the transverse U-shaped frame 31. The bottom end of the fixing bolts 32 passes through to the bottom of the transverse U-shaped frame 31. Connecting sliding columns 33 are slidably inserted into both the front and rear sides of the top of the transverse U-shaped frame 31. The top end of the connecting sliding column 33 is fixedly connected to the lower surface of the disc body 11. The bottom end of the connecting sliding column 33 passes through to the inner side of the transverse U-shaped frame 31 and is fixedly connected to a limiting plate 35. A tightening spring 34 is provided on the outer side of the connecting sliding column 33. The top end of the tightening spring 34 is fixedly connected to the lower surface of the disc body 11, and the bottom end of the tightening spring 34 is fixedly connected to the upper surface of the transverse U-shaped frame 31.

[0029] The overall effect of embodiment 3 is as follows: by rotating the fixing bolt 32, the transverse U-shaped frame 31 can be fixedly installed in the corresponding position of the digital printing equipment. The top spring 34 is always in a compressed state, providing upward elastic support for the disc body 11. When the equipment vibrates during operation, or when there are component tolerances in the installation of the printhead and the moisturizing disc, causing the distance between them to change, the disc body 11 can slide up and down on the transverse U-shaped frame 31 through the connecting slide column 33. The top spring 34 will automatically adjust the elasticity according to the distance change, so that the disc body 11 drives the annular sealing protrusion 13 to always fit tightly against the printhead, effectively making up for the gap, preventing the moisturizing liquid from leaking, and enhancing the stability and sealing of the connection between the moisturizing disc and the printhead.

[0030] The working principle of the entire device is as follows: When the digital printing device is working normally, the printhead rises from the printhead placement slot 12 to perform printing operations. At this time, the sliding baffle 25 of the closing component 2 is in the open state and will not obstruct the movement of the printhead. The moisturizing plate 1 is connected to the device through the elastic connector 3. The elastic support provided by the top spring 34 keeps the annular sealing protrusion 13 in a certain degree of contact with the printhead, preventing the moisturizing liquid from splashing out accidentally during the movement of the printhead. At the same time, the electric motor 21 of the closing component 2 is started. The electric motor 21 drives the transmission screw 22 to rotate, which drives the threaded slide plate 23 to slide in the connecting slide groove 110. The two sliding baffles 25 are slid towards the middle by the pulling rod 24, sealing the top of the printhead placement slot 12 and reducing the evaporation of the moisturizing liquid.

[0031] When the printhead needs to stop working after completing the printing task, the printhead descends into the printhead placement slot 12, and the annular sealing protrusion 13 fits tightly with the printhead to form a sealed space.

[0032] During the moisturizing process, the infusion pump 19 starts according to the set program, and delivers the clean moisturizing liquid filtered by the filter screen 17 in the liquid storage chamber 15 to the liquid storage cotton 14 through the infusion tube 18. After the liquid storage cotton 14 fully absorbs the moisturizing liquid, it continuously provides a moist environment for the print head to prevent the ink in the print head from drying and clogging. During this period, if the equipment vibrates or there are component tolerances, the top spring 34 of the elastic connector 3 will push the disc 11 and move adaptively on the transverse U-shaped frame 31 through the connecting slide column 33 to ensure that the annular sealing protrusion 13 is always in close contact with the print head, maintain good sealing performance, and prevent the moisturizing liquid from leaking.

[0033] When the moisturizing fluid needs to be replenished, it can be added to the printhead placement slot 12 via an external device. The fluid passes through the reservoir cotton 14 and the connection hole 16 and falls into the reservoir chamber 15. During the addition process, the filter screen 17 will filter the newly added moisturizing fluid, intercepting any impurities that may be present, and ensuring the cleanliness of the moisturizing fluid in the reservoir chamber 15. This will continuously provide a stable and effective moisturizing effect for the printhead, ensuring the normal performance and service life of the digital printing equipment printhead.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A negative pressure ink supply and humidification tray for a digital printing device, characterized in that: It includes a moisturizing tray (1), and a closing component (2) is provided on the inner side of the moisturizing tray (1). Elastic connectors (3) are fixedly connected to the left and right sides of the bottom end of the moisturizing tray (1). The moisturizing tray (1) includes a tray body (11), which is fixedly connected to the top of the elastic connector (3). A nozzle placement groove (12) is provided at the center of the top of the tray body (11). An annular sealing protrusion (13) is fixedly connected to the top of the tray body (11). A liquid storage cotton (14) is fixedly connected to the bottom of the inner surface of the nozzle placement groove (12). A liquid storage cavity (15) is provided at the bottom of the interior of the tray body (11). The top of the container has several connection holes (16), the top of the connection holes (16) extends to the lower surface of the nozzle placement groove (12), a filter screen (17) is fixedly connected to the middle of the inner wall of the liquid storage chamber (15), and infusion pipes (18) are fixedly connected to the bottom of the left and right sides of the inner wall of the liquid storage chamber (15). The top of the infusion pipes (18) extends to the bottom of the liquid storage cotton (14), and an infusion pump (19) is fixedly connected to the middle of the infusion pipes (18).

2. The negative pressure ink supply and humidification tray for a digital printing device according to claim 1, characterized in that: The closing assembly (2) includes an electric motor (21). A connecting groove (110) is provided on the upper inner wall of the nozzle placement slot (12). The electric motor (21) is fixedly connected to the upper right side of the disc body (11). The output shaft of the electric motor (21) passes through the interior of the connecting groove (110) and is fixedly connected to a transmission screw (22).

3. The negative pressure ink supply and humidification tray for a digital printing device according to claim 2, characterized in that: The outer surface of the transmission screw (22) is threadedly connected to a threaded slide plate (23). The threaded slide plate (23) is slidably connected to the right side of the inner surface of the connecting groove (110). Pull rods (24) are movably connected to both the front and rear ends of the top of the threaded slide plate (23). A sliding baffle (25) is movably connected to the end of the pull rod (24) away from the threaded slide plate (23). The two sliding baffles (25) are slidably connected to the front and rear sides of the inner surface of the nozzle placement groove (12).

4. The negative pressure ink supply and humidification tray for a digital printing device according to claim 1, characterized in that: The elastic connector (3) includes a transverse U-shaped frame (31), and the inner lower surface of the transverse U-shaped frame (31) is rotatably connected with fixing bolts (32) on both the front and rear sides. The bottom end of the fixing bolts (32) extends through to the bottom of the transverse U-shaped frame (31).

5. The negative pressure ink supply and humidification tray for a digital printing device according to claim 4, characterized in that: The top front and rear sides of the transverse U-shaped frame (31) are slidably connected with connecting slide columns (33). The top of the connecting slide column (33) is fixedly connected to the lower surface of the disc body (11), and the bottom of the connecting slide column (33) extends through to the inner side of the transverse U-shaped frame (31) and is fixedly connected with a limit plate (35).

6. The negative pressure ink supply and humidification tray for a digital printing device according to claim 5, characterized in that: A clamping spring (34) is provided on the outside of the connecting slide (33). The top end of the clamping spring (34) is fixedly connected to the lower surface of the disc (11), and the bottom end of the clamping spring (34) is fixedly connected to the upper surface of the transverse U-shaped frame (31).

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