Anti-blocking nozzle for UV inkjet printer

Abstract

The utility model relates to ink-jet printer nozzle technical field, concretely is a kind of anti-clogging nozzle for UV ink-jet printer, including shell, ink storage tank and cooling component, cooling component is set at the middle part of shell, the side of cooling component and the end inner wall of shell are enclosed and are formed with the ink collection cavity for storing the ink conveyed in the ink-jet process in use state, ink storage tank is installed at the end of cooling component.The utility model is transported ink to the ink collection cavity by ink storage tank and cooling component cooperation, while, backflow component sucks ink from the bottom of ink collection cavity, so that it backflows to ink storage tank via cooling component, forms circulation, this process can continuously take away the ink easily deposited at the bottom of cavity, effectively prevent the blockage caused by deposition, ink can also be completely sucked back by backflow component, realize the maintenance to ink collection cavity, further reduce the risk of blockage.

Description

Technical Field

[0001] This utility model relates to the field of inkjet printer nozzle technology, specifically to an anti-clogging nozzle for a UV inkjet printer. Background Technology

[0002] UV inkjet printers, also known as piezoelectric inkjet printers, have an integrated printhead with multiple piezoelectric crystals controlling multiple nozzles on a nozzle plate. Through CPU processing, a series of electrical signals are output to each piezoelectric crystal via the driver board. The piezoelectric crystals deform, and ink is ejected from the nozzles to form text, numbers, or graphics.

[0003] Chinese patent document CN211764279U discloses an anti-clogging nozzle for a UV inkjet printer, comprising a housing and an ink removal assembly. The housing contains a drive chamber, an ink storage chamber, a cooling chamber, an ink collection chamber, an ejection chamber, and a recovery chamber. The ink storage chamber is connected to an external ink supply line. One side of the drive chamber is located on one side of the ink storage chamber, and one side of the cooling chamber is located on the other side. The ink collection chamber is located on one side of the cooling chamber and is connected to the ink storage chamber. One side of the ejection chamber is located on one side of the ink collection chamber and is connected to the ink collection chamber. The recovery chamber is located on one side of the ink collection chamber and is connected to the ink collection chamber. The ink removal assembly includes a drive motor, a transmission shaft, and centrifugal fan blades. The drive motor is located within the drive chamber. The transmission shaft slides through the outer wall of the cooling chamber and is drively connected to the output end of the drive motor. The centrifugal fan blades are fixedly sleeved on one side of the drive motor.

[0004] In the above scheme, the centrifugal fan blades are located at the top of the ink collection chamber. The water flow generated by stirring is difficult to effectively disturb key areas such as the bottom of the chamber and the inlet of the jet pipe, causing these parts to still form fluid dead zones, which eventually leads to ink accumulation and deposition, thereby weakening the overall anti-clogging effect. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing an anti-clogging nozzle for a UV inkjet printer.

[0006] The technical solution of this utility model is as follows: an anti-clogging nozzle for a UV inkjet printer, comprising a housing, an ink storage tank, and a cooling component. The cooling component is located in the middle of the housing. One side of the cooling component and one end of the inner wall of the housing form an ink collection cavity for storing the ink delivered during the inkjet printing process in use. The ink storage tank is installed at one end of the cooling component. One end of the ink storage tank is provided with a return component that extends through the cooling component to the inner side of the ink collection cavity and delivers the ink inside the ink collection cavity to the ink storage tank in use.

[0007] Preferably, the cooling assembly includes a cooling box and a delivery pipe. The cooling box is installed in the middle of the housing, and the delivery pipe is installed in the middle of the cooling box, with one end extending to the inside of the ink collection chamber and the other end communicating with the ink storage box.

[0008] Preferably, the reflux assembly includes a reflux pump and a pipe. The reflux pump is located inside the housing and communicates with the ink storage tank. The pipe is located at the inlet of the reflux pump, and one end extends through the cooling box to the inside of the ink collection chamber.

[0009] Preferably, the pipeline includes a first connecting pipe, a second connecting pipe, and a spiral pipe. The spiral pipe is located inside the cooling box and extends to the outside of the cooling box at both ends. The second connecting pipe is installed at one end of the cooling box and connected to the inlet of the return pump. The first connecting pipe is installed at the other end of the cooling box and extends to the inside of the ink collection chamber at its end.

[0010] Preferably, a connecting plate is provided at the end of the housing, and a groove communicating with the ink collection cavity is provided on the inner side of the connecting plate.

[0011] Preferably, the groove is located at the bottom of the housing and is lower than the position of the injection pipe on the housing.

[0012] Preferably, one end of the first connector is located inside the groove and has a gap with the bottom end of the groove.

[0013] Preferably, a clearance groove is provided on one side of the ink storage box, and the middle part of the housing is located inside the clearance groove.

[0014] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects: This invention utilizes an ink storage tank and a cooling assembly to deliver ink to the ink collection chamber. Simultaneously, a reflux assembly draws ink from the bottom of the ink collection chamber and returns it to the ink storage tank via the cooling assembly, forming a cycle. This process continuously removes ink that is prone to deposit at the bottom of the chamber, effectively preventing blockages caused by sedimentation. Furthermore, the reflux assembly can completely draw back the ink, maintaining the ink collection chamber and further reducing the risk of blockages. Attached Figure Description

[0015] Figure 1 This is a perspective view of one embodiment of the present invention; Figure 2 This is a cross-sectional schematic diagram of the shell structure in one embodiment of the present invention; Figure 3 This is a cross-sectional schematic diagram of the cooling box structure in one embodiment of the present invention; Reference numerals: 1. Housing; 2. Connecting plate; 3. Cooling box; 4. Ink storage box; 5. Groove; 6. First connecting pipe; 7. Ink collection chamber; 8. Delivery pipe; 9. Return pump; 10. Second connecting pipe; 11. Clearance groove; 12. Spiral tube. Detailed Implementation

[0016] Example 1, as Figure 1-3 As shown, this utility model proposes an anti-clogging nozzle for a UV inkjet printer, comprising a housing 1, an ink reservoir 4, and a cooling assembly. The cooling assembly is located in the middle of the housing 1. One side of the cooling assembly and one end of the inner wall of the housing 1 form an ink collection chamber 7 for storing the ink transported during the inkjet printing process in use. The ink reservoir 4 is installed at one end of the middle of the cooling assembly, allowing ink inside the ink reservoir 4 to be transported to the inside of the ink collection chamber 7 through the middle of the cooling assembly. A micro-electrically controlled valve or a micro-pump is provided between the ink reservoir 4 and the cooling assembly. Two interfaces are provided on the side of the ink reservoir 4. One interface of the ink storage tank 4 is connected to an external ink supply device, and the other interface can be equipped with a valve or multiple valves through a multi-port pipe to regulate the pressure and ink capacity inside the ink storage tank 4, so as to make the ink delivery inside the ink storage tank 4 more stable. One end of the ink storage tank 4 is provided with a through-cooling component that extends to the inside of the ink collection chamber 7 and delivers the ink inside the ink collection chamber 7 to the ink storage tank 4 in use. The operation of the ink discharge and return components of the ink storage tank 4 is controlled by an external electronic control device to make the discharge and return delivery of the ink storage tank 4 reach a stable state.

[0017] In this embodiment, by connecting the ink storage tank 4 to the middle of the cooling assembly, the ink is cooled during the process of being transported to the ink collection chamber 7, thereby controlling the temperature within a preset range. The cooled ink enters the ink collection chamber 7 and is finally supplied to the jet tube for printing. At the same time, the reflux assembly draws ink from the bottom of the ink collection chamber 7 and returns it to the ink storage tank 4 via the cooling assembly, forming a cycle. This process can continuously remove ink that is prone to deposit at the bottom of the chamber, effectively preventing blockage caused by sedimentation. When cleaning is required, the outlet of the ink storage tank 4 can be closed and the reflux assembly can be activated to draw all the residual ink in the ink collection chamber 7 back into the ink storage tank 4, thereby maintaining the ink collection chamber 7 and further reducing the risk of blockage.

[0018] Example 2, as Figure 2-3As shown, this utility model proposes an anti-clogging nozzle for a UV inkjet printer. Compared with Embodiment 1, the difference in this embodiment is that the cooling component includes a cooling box 3 and a conveying pipe 8. The cooling box 3 is installed in the middle of the housing 1. The two ends of the side of the cooling box 3 have connectors that communicate with the cooling box 3. The cooling box 3 is connected to the outlet and inlet of the external cooling circulation pipeline through the two connectors, so that the cooling substance is discharged into the cooling box 3, flows and exchanges heat in the cooling box 3, and then flows into the external cooling circulation pipeline, so that the ink passing through the cooling box 3 can be circulated and cooled. The conveying pipe 8 is installed in the middle of the cooling box 3, with one end extending to the inside of the ink collection chamber 7 and the other end communicating with the ink storage tank 4. An ink supply regulating valve or a micro ink supply pump (not shown in the figure) is provided between the conveying pipe 8 and the ink storage tank 4, which is used to convey the ink in the ink storage tank 4 through the conveying pipe 8 and through the cooling box 3 to the ink collection chamber 7 during use, so that the temperature of the ink is at a preset temperature.

[0019] In this embodiment, by connecting the cooling box 3 to the external cooling circulation pipeline, the cooling substance circulates in the cooling box 3 and the external cooling circulation pipeline to cool the ink passing through the cooling box 3. At the same time, by placing the conveying pipe 8 in the middle of the cooling box 3 to seal the middle part of the cooling box 3, the inner cavity of the cooling box 3 is annular, so that the cooling substance is wrapped around the outer side of the middle part of the conveying pipe 8. When the ink inside the ink storage box 4 is conveyed to the ink collection chamber 7 through the conveying pipe 8, the conveying pipe 8 conducts heat and exchanges heat with the cooling substance, so that the temperature is at a preset state when the ink is conveyed to the ink collection chamber 7.

[0020] Example 3, as Figure 2-3 As shown, this utility model proposes an anti-clogging nozzle for a UV inkjet printer. Compared with Embodiment 1, the difference in this embodiment is that the reflux assembly includes a reflux pump 9 and a pipeline. The reflux pump 9 is located inside the housing 1 and communicates with the ink storage tank 4. A filter can be installed between the reflux pump 9 and the ink storage tank 4 during use to filter the refluxed ink, preventing the ink from generating particles and depositing inside the ink storage tank 4 during the reflux process. The pipeline includes a first connecting pipe 6, a second connecting pipe 10, and a spiral tube 12. The spiral tube 12 is located inside the cooling box 3 and extends to the outside of the cooling box 3 at both ends. It is used to increase the movement path of the refluxed ink inside the cooling box 3 during use, thereby improving the cooling effect of the ink. The second connecting pipe 10 is installed at one end of the cooling box 3 and connected to the inlet of the reflux pump 9. The first connecting pipe 6 is installed at the other end of the cooling box 3 and extends to the inside of the ink collection chamber 7.

[0021] In an optional embodiment, a clearance groove 11 is provided on one side of the ink storage box 4, and the middle part of the housing 1 is located inside the clearance groove 11. This is used to maximize the volume of the ink storage box 4 inside the housing 1 and to allow the second connector 10 to pass through the clearance groove 11, thereby avoiding any obstruction to the installation of the second connector 10.

[0022] In this embodiment, a pipeline is formed by connecting the first connecting pipe 6, the second connecting pipe 10, and the spiral pipe 12. One end of the pipeline is located inside the ink collection chamber 7, the middle part is located in the cooling box 3, and the other end is connected to the inlet of the return pump 9. When the ink storage box 4 delivers ink to the inside of the ink collection chamber 7 through the delivery pipe 8, and the ink height is higher than the jet pipe, the return pump 9 is started. The ink inside the ink collection chamber 7 is drawn through the pipeline, so that the ink inside the ink collection chamber 7 and the ink storage box 4 circulates, avoiding ink deposition and clogging of the nozzle. At the same time, when the outlet of the ink storage box 4 is closed, the return pump 9 and the pipeline can deliver the ink in the ink collection chamber 7 to the ink storage box 4, and the ink in the ink storage box 4 can be returned to the external ink delivery device, so that the ink in the ink collection chamber 7 is discharged more thoroughly, realizing the maintenance of the ink collection chamber 7 and further reducing the risk of clogging.

[0023] Example 4, as Figure 1-2 As shown, this utility model proposes an anti-clogging nozzle for a UV inkjet printer. The difference between this embodiment and Embodiment 1 is that a connecting plate 2 is provided at the end of the housing 1. A groove 5 communicating with the ink collection chamber 7 is provided on the inner side of the connecting plate 2. This groove 5 is used to guide and concentrate ink towards the center of the connecting plate 2 during use, so that when ink deposits occur, they can be sucked away along with the ink through the first connecting pipe 6, ensuring more complete ink discharge and reducing the possibility of ink drying inside the ink collection chamber 7 when the housing 1 is not in use. The groove 5 is located at the bottom of the housing 1 and is lower than the position of the spray pipe on the housing 1, serving to connect the ink collection chamber 7 and the groove 5. When the groove 5 is used to hold ink, the first connecting pipe 6 is located below the jet tube to draw the ink back, preventing the drawing of the first connecting pipe 6 from affecting the stability of the jet tube. One end of the first connecting pipe 6 is located inside the groove 5 and has a gap with the bottom of the groove 5. During use, the first connecting pipe 6 draws the hot ink inside the groove 5, so that it moves spirally in the cooling box 3 through the cooperation of the spiral tube 12 and is cooled, and then transported to the inside of the ink storage box 4 for circulation. At the same time, the first connecting pipe 6 discharges and replaces the ink inside the groove 5 to prevent ink from accumulating and clogging the printhead.

[0024] In this embodiment, by setting a connecting plate 2 at the bottom of the housing 1 and positioning the connecting plate 2 below the position of the jet tube, the first connecting pipe 6 can draw back the ink below the jet tube while the jet tube can use the ink. This avoids the first connecting pipe 6 affecting the stability of the jet tube. At the same time, the ink circulates, preventing the formation of deposits in the ink and thus avoiding nozzle clogging.

[0025] In this invention, the ink storage tank 4 is connected to the delivery pipe 8, allowing the ink in the storage tank 4 to be delivered to the ink collection chamber 7 via the delivery pipe 8. During the delivery process, the cooling tank 3 is connected to an external cooling circulation pipeline, allowing the cooling substance to exchange heat with the delivery pipe 8 within the cooling tank 3, thereby cooling the ink delivered in the delivery pipe 8 and controlling the temperature within a preset range. The cooled ink enters the ink collection chamber 7 and is ultimately supplied to the inkjet tube for printing. Simultaneously, a pipeline is formed by connecting the first connecting pipe 6, the second connecting pipe 10, and the spiral tube 12, with one end of the pipeline located inside the ink collection chamber 7, the middle section located in the cooling tank 3, and the other end... Connected to the inlet of the return pump 9, when ink is supplied from the ink reservoir 4 to the inside of the ink collection chamber 7 through the delivery pipe 8, and the ink level is higher than that of the jet pipe, the return pump 9 is started. The ink inside the ink collection chamber 7 is drawn through the pipe, so that the ink in the ink collection chamber 7 and the inside of the ink reservoir 4 circulates, preventing ink from accumulating and clogging the nozzle. When cleaning is required, the outlet of the ink reservoir 4 can be closed, and the return pump 9 can be kept running. The return pump 9, through the cooperation of the pipe and the connecting plate 2, draws all the residual ink in the ink collection chamber 7 back into the ink reservoir 4, thereby maintaining the ink collection chamber 7 and further reducing the risk of clogging.

[0026] It should be noted that the specific models and specifications of the reflux pump 9 and valves need to be selected and determined based on the actual specifications of the device. The specific selection and calculation methods adopt existing technologies in this field, so they will not be described in detail here.

[0027] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. An anti-clogging nozzle for a UV inkjet printer, characterized in that, Includes housing (1), ink reservoir (4), and cooling components; The cooling component is located in the middle of the housing (1), and one side of the cooling component and one end of the inner wall of the housing (1) form an ink collection cavity (7) for storing the ink delivered during the coding process in the use state. The ink storage box (4) is installed at one end of the cooling assembly. One end of the ink storage box (4) is provided with a return assembly that extends through the cooling assembly to the inside of the ink collection chamber (7) and, in use, transports the ink inside the ink collection chamber (7) to the ink storage box (4).

2. The anti-clogging nozzle for a UV inkjet printer according to claim 1, characterized in that, The cooling assembly includes a cooling box (3) and a delivery pipe (8); The cooling box (3) is installed in the middle of the shell (1); The delivery pipe (8) is installed in the middle of the cooling box (3), with one end extending to the inside of the ink collection chamber (7) and the other end connected to the ink storage box (4).

3. The anti-clogging nozzle for a UV inkjet printer according to claim 2, characterized in that, The reflux assembly includes a reflux pump (9) and piping; The reflux pump (9) is located inside the housing (1) and is connected to the ink storage box (4); The pipe is located at the inlet of the return pump (9) and extends through the cooling box (3) to the inside of the ink collection chamber (7).

4. The anti-clogging nozzle for a UV inkjet printer according to claim 3, characterized in that, The pipeline includes a first connector (6), a second connector (10), and a spiral pipe (12). The spiral tube (12) is located inside the cooling box (3) and extends to the outside of the cooling box (3) at both ends; The second pipe (10) is installed at one end of the cooling box (3) and connected to the inlet of the return pump (9); The first connecting pipe (6) is installed at the other end of the cooling box (3) and its end extends to the inside of the ink collection chamber (7).

5. The anti-clogging nozzle for a UV inkjet printer according to claim 4, characterized in that, The end of the housing (1) is provided with a connecting plate (2), and the inner side of the connecting plate (2) is provided with a groove (5) that communicates with the ink collection cavity (7).

6. The anti-clogging nozzle for a UV inkjet printer according to claim 5, characterized in that, The groove (5) is located at the bottom of the housing (1) and is lower than the position of the injection pipe on the housing (1).

7. The anti-clogging nozzle for a UV inkjet printer according to claim 4, characterized in that, One end of the first connector (6) is located inside the groove (5) and has a gap with the bottom end of the groove (5).

8. The anti-clogging nozzle for a UV inkjet printer according to claim 4, characterized in that, A clearance groove (11) is provided on one side of the ink storage box (4), and the middle part of the housing (1) is located inside the clearance groove (11).

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