Ink box ink adding equipment for UV printer

Abstract

The invention belongs to the technical field of UV printers, and particularly relates to an ink box ink adding device for a UV printer, the ink box ink adding device comprises a UV printer body, the UV printer body comprises a base table, a material carrying table, a guide rail transmission mechanism and a printing assembly, the printing assembly is installed on the guide rail transmission mechanism, and a printing ink box is installed in the printing assembly; an ink supply box is fixed to the base table, an ink adding and flow dividing assembly is arranged on the printing ink box, an ink guide hose is communicated between the ink adding and flow dividing assembly and the ink supply box, and the ink adding and flow dividing assembly is used for evenly dividing and adding ink in the ink supply box into the printing ink box. According to the automatic ink adding device, automatic ink adding treatment can be conducted on the printing ink box, meanwhile, the situation that original ink in the printing ink box splashes due to the fact that the ink added into the printing ink box generates large impact force, and meanwhile a large number of bubbles or foams are generated is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of UV printers, and in particular relates to an ink cartridge refilling device for a UV printer. Background Art

[0002] UV printer is a high-tech full-color digital printing machine without plate making: it is not restricted by any materials and can perform color photo-level printing on T-shirts, sliding doors, cabinet doors, sliding doors, glass, plates, various signs, crystal, PVC, acrylic, metal, plastic, stone, leather and other surfaces.

[0003] Since the UV printer continuously prints the printing materials on the loading platform, the print cartridge is required to continuously provide ink to the printing component. Since the volume in the print cartridge is limited, when the ink in the print cartridge is used up, most of the time the UV printer is stopped first, and then the printing component is moved to the side of the loading platform, the print cartridge can be removed from the printing component, and then the ink is added by manual injection. Obviously, this method not only makes the ink adding method cumbersome, but also requires the UV printer to be calibrated and adjusted again after startup, which will affect the printing efficiency and printing quality of the UV printer for the printing materials. Summary of the invention

[0004] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0005] The present invention discloses an ink cartridge refilling device for a UV printer, comprising a UV printer body, wherein the UV printer body comprises a base platform, a loading platform, a guide rail transmission mechanism and a printing component, wherein the printing component is mounted on the guide rail transmission mechanism, and a printing ink cartridge is mounted in the printing component, an ink supply cartridge is fixed to the base platform, an ink refilling shunt component is arranged on the printing ink cartridge, an ink guide hose is connected between the ink refilling shunt component and the ink supply cartridge, and the ink refilling shunt component is used for evenly shunting the ink in the ink supply cartridge and adding it into the printing ink cartridge.

[0006] Furthermore, the ink filling and diversion assembly includes an ink filling main pipe, a guide pipe, a diversion pipe, a filter screen and a sealing ring. The ink filling main pipe is vertically installed on the print cartridge, and the bottom of the ink filling main pipe is located inside the print cartridge. The bottom end of one side of the ink filling main pipe is internally connected with a guide pipe, and the guide pipe extends out of the top of the print cartridge and is connected with an ink guide hose. At least three diversion pipes are obliquely installed on the outer ring surface of the tube body of the ink filling main pipe located inside the print cartridge, and the pipe openings of the three inclined diversion pipes are in contact with the inner wall of the print cartridge. The pipe walls below the pipe openings of the three diversion pipes that are in contact with the inner wall of the print cartridge are provided with diversion grooves. A filter screen and a sealing ring are fixed inside the ink filling main pipe, and the filter screen is located between the diversion pipe and the guide pipe, and the sealing ring is located above the pipe openings of the three diversion pipes connected to the ink filling main pipe.

[0007] Furthermore, a defoaming component is provided in the printing cartridge, and the defoaming component includes a lightweight sliding rod, a suspension ball and a defoaming ball. The lightweight sliding rod is vertically sealed and slidably inserted into the ink filling pipe, and the bottom end of the lightweight sliding rod extends out from under the ink filling pipe. The bottom end of the lightweight sliding rod is fixedly connected to the suspension ball, and the suspension ball is located on the surface of the ink in the printing cartridge. The outer ring surface of the suspension ball is inlaid with a defoaming ball made of a defoaming agent.

[0008] Furthermore, the defoaming component also includes a rotating fan blade, a supporting swivel, a supporting column, a rotating ring and a lightweight sliding strip. The bottom of the ink filling main pipe is provided with a rotating fan blade, and the rotating fan blade is aligned with the pipe mouth of the diversion pipe. The lower surface of the mounting ring of the rotating fan blade is rotatably provided with a supporting swivel, and the lower surface of the supporting swivel is fixedly supported inside the bottom of the ink filling main pipe by a plurality of supporting columns. The mounting ring of the rotating fan blade is slidably sleeved on the lightweight sliding rod, and the inner ring surface of the mounting ring is provided with at least two limiting sliding grooves. The center hole of the filter screen and the sealing ring is rotatably provided with a rotating ring, and the rotating ring is also provided with at least two limiting sliding grooves. At least two lightweight sliding strips are vertically fixed on the outer ring surface of the lightweight sliding rod, and at least two lightweight sliding strips are slidably inserted into the limiting sliding grooves.

[0009] Furthermore, a contact plate is fixed on the top of the lightweight sliding rod, and the outer ring surface of the contact plate is arranged in non-contact with the outer ring surface of the ink filling pipe. A contact switch is arranged on the top of the inner tube wall of the ink filling pipe and above the sealing ring, and the contact switch is in sliding contact with the contact plate.

[0010] Furthermore, one side of the bottom of the ink filling main pipe is connected to the sewage discharge pipe, and the other end of the sewage discharge pipe extends out of the printing ink cartridge.

[0011] Furthermore, a threaded tube is fixed on the top inclined surface of the printing ink cartridge, and a sealing cap is threadedly connected to the threaded tube.

[0012] Furthermore, an air supply pipe is provided on the top of the printing ink cartridge, and an electromagnetic valve is provided on the air supply pipe.

[0013] The present invention has the following beneficial effects:

[0014] 1. The present invention vertically arranges an ink filling main pipe in the print cartridge, and uses a plurality of shunt pipes to shunt the ink injected into the ink filling main pipe into the print cartridge, and allows the shunt ink to flow downward along the inner wall of the print cartridge, thereby not only realizing automatic ink filling processing for the print cartridge, but also preventing the ink added into the print cartridge from generating a large impact force and causing the original ink in the print cartridge to splash, and also generating a large amount of bubbles or foam.

[0015] 2. The present invention arranges a light sliding rod for sliding inside the ink filling pipe, and a suspension ball is arranged at the bottom end of the light sliding rod. Since the suspension ball floats on the liquid surface of the ink, the defoaming ball embedded on the surface of the suspension ball can eliminate the foam generated in the printing cartridge, and can further reduce the bubbles or foam generated when the added ink flows downward and mixes with the original ink in the printing cartridge. At the same time, the ink filled into the bottom of the ink filling pipe can drive the rotating fan blade to rotate, so that the suspension ball can not only eliminate the foam or bubbles, but also fully mix and stir the added ink and the original ink, thereby preventing the added ink from stratifying in the printing cartridge.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure disclosed in the present invention;

[0019] Figure 2 It is a structural schematic diagram of the printing ink cartridge 5 disclosed in the present invention;

[0020] Figure 3 It is a schematic diagram of the internal structure of the printing cartridge 5 disclosed in the present invention;

[0021] Figure 4 It is a cross-sectional view of the ink filling main pipe disclosed in the present invention;

[0022] Figure 5 It is a cross-sectional view of the rotating fan blade disclosed in the present invention.

[0023] In the figure: 1. base table; 2. loading table; 3. guide rail transmission mechanism; 4. printing component; 5. printing ink cartridge; 6. ink supply cartridge; 61. ink guide hose; 7. ink filling and diversion component; 71. ink filling main pipe; 711. contact switch; 72. guide pipe; 73. diversion pipe; 731. guide slot; 74. filter screen; 75. sealing ring; 76. drain pipe; 8. defoaming component; 81. lightweight slide rod; 82. suspension ball; 83. defoaming ball; 84. rotating fan blade; 85. supporting swivel; 86. supporting column; 87. rotating ring; 871. limiting slide groove; 88. lightweight slide bar; 89. contact plate; 9. threaded pipe; 10. sealing cap; 11. air supply pipe. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0026] See also Figure 1-Figure 5 As shown, the present invention is an ink cartridge refilling device for a UV printer, comprising a UV printer body, the UV printer body comprising a base 1, a loading platform 2, a guide rail transmission mechanism 3 and a printing assembly 4, the printing assembly 4 is mounted on the guide rail transmission mechanism 3, and a printing ink cartridge 5 is installed in the printing assembly 4, an ink supply cartridge 6 is fixed to the base 1, an ink refilling shunt assembly 7 is arranged on the printing ink cartridge 5, an ink guide hose 61 is connected between the ink refilling shunt assembly 7 and the ink supply cartridge 6, and the ink refilling shunt assembly 7 is used to evenly shunt the ink in the ink supply cartridge 6 and add it to the printing ink cartridge 5;

[0027] In the scheme designed by the present invention, an ink adding and diverting assembly 7 is arranged in the printing ink cartridge 5. When the UV printer continuously prints the printing material conveyed on the loading platform 2, and the UV printer issues an alarm indicating that the ink usage is low, the operator stops the UV printer as required, and then starts the ink pump on the ink supply cartridge 6 to allow the ink to flow into the ink guide hose 61, and the ink in the ink guide hose 61 flows into the ink adding and diverting assembly 7. At this time, the ink adding and diverting assembly 7 evenly diverts the introduced ink into the printing ink cartridge 5, and allows the added ink to flow downward along the inner wall of the printing ink cartridge 5, so that the added ink will not cause excessive impact force on the original ink in the printing ink cartridge 5, and because the ink supply cartridge 6 and The printing cartridges 5 are connected to each other through an ink guide hose 61, so that when the printing component 4 moves back and forth on the guide rail transmission mechanism 3 to print the printing material, the ink in the printing cartridge 5 will continue to add ink to the printing cartridge 5, and even if the UV printer stops working, there is no need to move the printing component 4 to the side of the loading platform 2 for ink addition, and there is no need to perform calibration and adjustment after the ink is added to the printing cartridge 5. At the same time, the added ink is evenly distributed along the inner wall of the printing cartridge 5 to the inside of the printing cartridge 5. Therefore, it will not cause a large impact force on the original ink in the printing cartridge 5, and thus will reduce the phenomenon of a large number of bubbles or foams generated in the printing cartridge 5 due to the impact of the addition of ink.

[0028] As an embodiment of the present invention, the ink filling and diversion assembly 7 includes an ink filling main pipe 71, a guide pipe 72, a diversion pipe 73, a filter screen 74 and a sealing ring 75. The ink filling main pipe 71 is vertically installed on the printing ink cartridge 5, and the bottom of the ink filling main pipe 71 is located inside the printing ink cartridge 5. The bottom end of one side of the ink filling main pipe 71 is connected to the guide pipe 72, and the guide pipe 72 extends out of the top of the printing ink cartridge 5 and is connected to the ink guide hose 61. The ink filling main pipe 71 is located inside the printing ink cartridge 5. At least three shunt pipes 73 are installed obliquely on the outer ring surface of the body, and the pipe openings of the three oblique shunt pipes 73 are in contact with the inner wall of the printing ink cartridge 5. The pipe wall below the pipe openings of the three shunt pipes 73 in contact with the inner wall of the printing ink cartridge 5 is provided with a guide groove 731. A filter screen 74 and a sealing ring 75 are fixed in the ink filling main pipe 71. The filter screen 74 is located between the shunt pipe 73 and the guide pipe 72. The sealing ring 75 is located above the pipe openings of the three shunt pipes 73 communicating with the ink filling main pipe 71.

[0029] In the scheme designed by the present invention, when the ink in the ink supply cartridge 6 enters the ink guide hose 61, the ink will enter the bottom of the ink supply pipe 71 through the guide pipe 72. As the ink in the ink supply pipe 71 is continuously injected and rises, the filter screen 74 will filter the mixed condensate or particulate impurities in the ink. Then the ink will continue to rise and enter the multiple branch pipes 73. Since the inclined pipe openings of the multiple branch pipes 73 are in contact with the inner wall of the print cartridge 5 and are provided with guide grooves 731, the ink flowing in the multiple branch pipes 73 will flow to the inner wall of the print cartridge 5 through the guide grooves 731, and then flow downward along the inner wall of the print cartridge 5 to add ink. The setting of the sealing ring 75 can prevent the ink from continuing to flow in the ink supply pipe. 71, therefore, the added ink will flow evenly into the print cartridge 5 through a plurality of shunt pipes 73, and because the added ink flows downward along the inner wall of the print cartridge 5, the ink added into the print cartridge 5 will not cause the original ink in the print cartridge 5 to splash due to a large impact force, and a large amount of bubbles or foam will be generated, and the operator does not need to manually add ink to the print cartridge 5; when the ink guide hose 61 stops adding ink, the ink at the bottom of the ink adding main pipe 71 will be retained, and the shunt pipe 73 will no longer perform uniform shunt addition of the ink, and at the same time, the condensate or particulate impurities filtered by the filter screen 74 will remain in the pipeline of the ink adding main pipe 71, and then be centrally cleaned and discharged.

[0030] As an embodiment of the present invention, a defoaming component 8 is provided in the printing ink cartridge 5, and the defoaming component 8 includes a light sliding rod 81, a suspension ball 82 and a defoaming ball 83. The light sliding rod 81 is vertically sealed and slidably inserted into the ink filling pipe 71, and the bottom end of the light sliding rod 81 extends out from below the ink filling pipe 71. The bottom end of the light sliding rod 81 is fixedly connected to the suspension ball 82, and the suspension ball 82 is located on the surface of the ink in the printing ink cartridge 5. The outer ring surface of the suspension ball 82 is inlaid with a defoaming ball 83 made of a defoaming agent. In the design of the present invention, when ink is continuously added to the printing ink cartridge 5, the suspension ball 82 will continuously follow the liquid surface of the ink. The suspension ball 82 floats on the surface of the ink, and therefore, the defoaming ball 83 embedded on the outer surface of the suspension ball 82 can eliminate and clean some of the bubbles or foams generated in the added ink, which can further reduce the bubbles or foams generated when the added ink flows downward and mixes with the original ink in the printing cartridge 5; and when the ink in the printing cartridge 5 is used and the liquid level drops, the suspension ball 82 will drop synchronously with the ink level, so that the defoaming ball 83 can always be in contact with the ink surface, and can also perform defoaming treatment on the ink being used in the printing cartridge 5.

[0031] As an embodiment of the present invention, the defoaming component 8 also includes a rotating blade 84, a supporting swivel 85, a supporting column 86, a rotating ring 87 and a light slide 88. The bottom of the ink-adding main pipe 71 is provided with a rotating blade 84, and the rotating blade 84 is aligned with the pipe opening of the shunt pipe 73. The lower surface of the mounting ring of the rotating blade 84 is rotatably provided with a supporting swivel 85, and the lower surface of the supporting swivel 85 is fixedly supported on the ink-adding main pipe 71 by a plurality of supporting columns 86. Inside the bottom of the tube, the mounting ring of the rotating blade 84 is slidably sleeved on the light sliding rod 81, and the inner ring surface of the mounting ring is provided with at least two limiting sliding grooves 871, the central holes of the filter screen 74 and the sealing ring 75 are rotatably mounted with a rotating ring 87, and the rotating ring 87 is also provided with at least two limiting sliding grooves 871, and the outer ring surface of the light sliding rod 81 is vertically fixed with at least two light sliding strips 88, and the at least two light sliding strips 88 are slidably inserted into the limiting sliding grooves 871;

[0032] In the scheme designed by the present invention, when the ink is introduced into the bottom of the ink filling pipe 71 through the guide tube 72, the rotating blade 84 supported by the support ring 85 and the support column 86 will rotate in the ink filling pipe 71 due to the flow impact force of the ink, and the light slide bar 81 is inserted into the limiting slide groove 871 starting from the fixed ring of the rotating blade 84 through the light slide bar 88. Therefore, the rotation of the rotating blade 84 will drive the suspension ball 82 to rotate and stir on the liquid surface of the ink through the light slide bar 88 and the light slide bar 81, which will not be able to eliminate the foam or bubbles generated on the liquid surface of the added ink, and at the same time can The light slide bar 81 is connected with the rotating blade 84 through the light slide bar 88 for sliding movement and mixing with the original ink. At the same time, since the light slide bar 81 is connected with the rotating blade 84 in a sliding manner through the light slide bar 88, when the suspended ball 82 rises synchronously with the added ink, the light slide bar 81 will also rise synchronously in the ink adding main pipe 71, and will not affect the rotating blade 84 driving the suspended ball 82 to rotate for defoaming and stirring. At the same time, the light slide bar 81 is connected with the filter screen 74 and the sealing ring 75 for rotation through the rotating ring 87, so that the light slide bar 81 can slide up and down at the center of the filter screen 74 and the sealing ring 75, and can rotate at the same time, and will not affect the normal filtering of the ink by the filter screen 74.

[0033] As an embodiment of the present invention, a contact plate 89 is fixed on the top of the light sliding rod 81, and the outer ring surface of the contact plate 89 is arranged in non-contact with the outer ring surface of the ink filling pipe 71, and a contact switch 711 is arranged on the top of the inner tube wall of the ink filling pipe 71 and above the sealing ring 75, and the contact switch 711 is in sliding contact with the contact plate 89; in the scheme designed by the present invention, when the light sliding rod 81 slides up and down in the ink filling pipe 71, the contact plate 89 on the top of the light sliding rod 81 will contact with the contact switch 711 installed on the inner wall of the ink filling pipe 71, and when the contact plate 89 contacts the ink filling pipe When the contact switch 711 on the top of 71 contacts, it means that the ink level added to the printing cartridge 5 has risen to the highest point, and then the contact switch 711 will transmit an electrical signal to the control system, so that the ink pump on the ink supply cartridge 6 stops working, and the ink stops being added to the ink filling pipe 71; when the contact plate 89 drops to above the sealing ring 75 and contacts the contact switch 711 above the sealing ring 75, it means that the suspension ball 82 drops to the lowest point and the amount of ink in the printing cartridge 5 is small. At this time, the control system will control the ink pump to work, so that ink is added to the printing cartridge 5.

[0034] As an embodiment of the present invention, one side of the bottom of the ink filling main pipe 71 is connected to the drain pipe 76, and the other end of the drain pipe 76 extends out of the printing ink cartridge 5; in the scheme designed by the present invention, when the ink filling main pipe 71 is used for a long time, resulting in a large amount of filtered condensate or particulate impurities remaining at the bottom of the pipe, the operator can connect the external cleaning pipe to the drain pipe 76 when the UV printer is not working, and then inject cleaning liquid into the drain pipe 76. At this time, the guide pipe 72 is in a closed state, so that the cleaning liquid can flow inside the bottom of the ink filling main pipe 71 to flush the filtered residual impurities, and then be discharged through the drain pipe 76 to prevent excessive filtered residual impurities from causing blockage of the filter screen 74, thereby affecting the ink filling main pipe 71 to evenly divert the added ink to the diversion pipe 73.

[0035] As an embodiment of the present invention, a threaded tube 9 is fixed to the top inclined surface of the print cartridge 5, and a sealing cap 10 is threadedly connected to the threaded tube 9; in the scheme designed by the present invention, when it is necessary to flush and clean the inside of the print cartridge 5 that has been used for a long time, the print cartridge 5 is removed from the printing assembly 4, and then the flushing tube is connected to the drain pipe 76 as needed, or the sealing cap 10 is removed from the threaded tube 9, and the cleaning liquid is added to the ink filling main pipe 71 and the print cartridge 5 respectively, and the cleaning liquid added to the ink filling main pipe 71 will flow upward into the shunt pipe 73, and then the ink adhered to the inner wall of the print cartridge 5 will be flushed through multiple shunt pipes 73, and then the operator will discharge the cleaned waste liquid through the drain pipe 76 and the threaded tube 9.

[0036] As an embodiment of the present invention, an air supply pipe 11 is provided on the top of the printing cartridge 5 , and an electromagnetic valve is provided on the air supply pipe 11 ; the provision of the air supply pipe 11 can exhaust or supply air to the interior of the printing cartridge 5 .

[0037] Working principle:

[0038] When the UV printer continuously prints the printing material transported on the loading platform 2, and the UV printer issues an alarm indicating that the ink usage is low, the operator stops the UV printer as needed, and then starts the ink pump on the ink supply cartridge 6 to allow the ink to flow into the ink guide hose 61. At this time, the ink will enter the bottom of the ink supply pipe 71 through the guide pipe 72. As the ink in the ink supply pipe 71 continues to rise, the filter screen 74 will filter the mixed condensate or particulate impurities in the ink. Then the ink continues to rise and enters the multiple branch pipes 73. Due to the inclination of the multiple branch pipes 73, the ink will flow into the ink supply pipe 71. The pipe mouth contacts the inner wall of the printing ink cartridge 5 and is provided with a guide groove 731. Therefore, the ink flowing in the multiple diversion pipes 73 will flow to the inner wall of the printing ink cartridge 5 through the guide groove 731, and then flow downward along the inner wall of the printing ink cartridge 5 to add ink. When ink is continuously added to the printing ink cartridge 5, the suspension ball 82 will continue to rise with the liquid level of the ink. Therefore, the lightweight slide rod 81 will continue to slide upward in the ink adding main pipe 71. Since the suspension ball 82 floats on the liquid surface of the ink, the defoaming ball 83 embedded on the outer surface of the suspension ball 82 will eliminate and clean some bubbles or foams generated in the added ink.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0040] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An ink cartridge refilling device for a UV printer, comprising a UV printer body, wherein the UV printer body comprises a base platform (1), a loading platform (2), a guide rail transmission mechanism (3) and a printing component (4), characterized in that: The printing assembly (4) is mounted on the guide rail transmission mechanism (3), and a printing ink cartridge (5) is installed in the printing assembly (4); an ink supply cartridge (6) is fixed to the base platform (1); an ink adding and diverting assembly (7) is arranged on the printing ink cartridge (5); an ink guiding hose (61) is connected between the ink adding and diverting assembly (7) and the ink supply cartridge (6); and the ink adding and diverting assembly (7) is used to evenly divert the ink in the ink supply cartridge (6) and add it to the printing ink cartridge (5).

2. The ink cartridge refilling device for a UV printer according to claim 1, characterized in that: The ink filling and diversion assembly (7) comprises an ink filling main pipe (71), a flow guide pipe (72), a flow diversion pipe (73), a filter screen (74) and a sealing ring (75). The ink filling main pipe (71) is vertically mounted on the printing ink cartridge (5), and the bottom of the ink filling main pipe (71) is located inside the printing ink cartridge (5). The bottom end of one side of the ink filling main pipe (71) is connected to the flow guide pipe (72), and the flow guide pipe (72) extends out of the top of the printing ink cartridge (5) and is connected to the ink guide hose (61). The ink filling main pipe (71) is located on the outer surface of the pipe body inside the printing ink cartridge (5). At least three shunt pipes (73) are installed obliquely, and the pipe openings of the three oblique shunt pipes (73) are in close contact with the inner wall of the printing ink cartridge (5), and a guide groove (731) is provided on the pipe wall below the pipe openings of the three shunt pipes (73) in close contact with the inner wall of the printing ink cartridge (5). A filter screen (74) and a sealing ring (75) are fixed inside the ink filling main pipe (71), and the filter screen (74) is located between the shunt pipe (73) and the guide pipe (72), and the sealing ring (75) is located above the pipe openings of the three shunt pipes (73) in communication with the ink filling main pipe (71).

3. The ink cartridge refilling device for a UV printer according to claim 2, characterized in that: The printing ink cartridge (5) is provided with a defoaming component (8), the defoaming component (8) comprising a light sliding rod (81), a suspension ball (82) and a defoaming ball (83), the light sliding rod (81) is vertically sealed and slidably inserted into the ink filling pipe (71), and the bottom end of the light sliding rod (81) extends out from below the ink filling pipe (71), the bottom end of the light sliding rod (81) is fixedly connected to the suspension ball (82), and the suspension ball (82) is located on the surface of the ink in the printing ink cartridge (5), and the outer ring surface of the suspension ball (82) is inlaid with a defoaming ball (83) made of a defoaming agent.

4. The ink cartridge refilling device for a UV printer according to claim 3, characterized in that: The defoaming component (8) further comprises a rotating blade (84), a supporting swivel (85), a supporting column (86), a rotating ring (87) and a light sliding strip (88); the bottom of the ink-filling main pipe (71) is provided with a rotating blade (84), and the rotating blade (84) is aligned with the pipe opening of the diverter pipe (73); the lower surface of the mounting ring of the rotating blade (84) is rotatably provided with a supporting swivel (85), and the lower surface of the supporting swivel (85) is fixedly supported on the bottom of the ink-filling main pipe (71) by a plurality of supporting columns (86). The mounting ring of the rotating fan blade (84) is slidably sleeved on the light slide rod (81), and the inner ring surface of the mounting ring is provided with at least two limiting slide grooves (871); a rotating ring (87) is rotatably mounted at the center hole of the filter screen (74) and the sealing ring (75), and the rotating ring (87) is also provided with at least two limiting slide grooves (871); at least two light slide bars (88) are vertically fixed on the outer ring surface of the light slide rod (81), and at least two light slide bars (88) are slidably inserted into the limiting slide grooves (871).

5. The ink cartridge refilling device for a UV printer according to claim 3, characterized in that: A contact plate (89) is fixed on the top of the light sliding rod (81), and the outer ring surface of the contact plate (89) is arranged in non-contact with the outer ring surface of the ink filling main pipe (71). A contact switch (711) is arranged on the top of the inner tube wall of the ink filling main pipe (71) and above the sealing ring (75), and the contact switch (711) is in sliding contact with the contact plate (89).

6. The ink cartridge refilling device for a UV printer according to claim 2, characterized in that: One side of the bottom of the ink filling main pipe (71) is connected to the sewage discharge pipe (76), and the other end of the sewage discharge pipe (76) extends out of the printing ink cartridge (5).

7. The ink cartridge refilling device for a UV printer according to claim 1, characterized in that: A threaded tube (9) is fixed on the top inclined surface of the printing ink cartridge (5), and a sealing cap (10) is threadedly connected to the threaded tube (9).

8. The ink cartridge refilling device for a UV printer according to claim 1, characterized in that: The top of the printing ink cartridge (5) is provided with an air supply pipe (11), and the air supply pipe (11) is provided with an electromagnetic valve.

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