An ink leakage prevention device for a spray head connecting pipe of a spray plotter

Abstract

The utility model discloses a kind of anti-ink leakage devices of spray head connecting pipe of spray plotter, including spray head, and spray head is fixedly connected with connecting pipe, and connecting pipe includes bottom pipe and upper pipe, and bottom pipe diameter is greater than upper pipe diameter, and bottom pipe is vertically fixed on spray plotter spray head, and upper pipe is integrally formed on bottom pipe upper end face, and bottom pipe outer wall is sleeved with receiving cavity, and receiving cavity is fixedly connected with bottom pipe, and the inside and outside diameter of receiving cavity is greater than the inside and outside diameter of bottom pipe, and from bottom to top, its inside and outside diameter changes from fixed to gradually increase, then gradually decrease again, opening is arranged in sleeve upper end face, and horizontal conduit is fixed on the outer wall of receiving cavity, and switch is arranged on conduit. The utility model passes through receiving cavity and receives the ink that leaks from the connecting place of ink pipe and connecting pipe, prevents ink from flowing to spray plotter spray head, to prevent ink from being thrown on canvas during the process of moving and spraying in spray head, so that the pattern of canvas is wrong, and unqualified product is caused.

Description

Technical Field

[0001] This utility model relates to the field of inkjet printer printhead technology, and in particular to an ink leakage prevention device for inkjet printer printhead connecting pipe. Background Technology

[0002] The inkjet printer has a fixed connecting tube that connects to the ink tube. Ink enters the connecting tube through the ink tube and then enters the printhead. The printhead sprays the ink onto the canvas to form a pattern. Usually, the upper opening of the connecting tube of the printhead is pagoda-shaped, which facilitates connection with the ink tube and increases the tightness and sealing of the connection. However, the pressure of ink entering and leaving the printhead is relatively high, and a small amount of ink will still leak from between the connecting tube and the ink tube and flow onto the inkjet printer. When the inkjet printer moves to print, it will splash ink onto the canvas, causing errors in the pattern on the canvas and resulting in defective products. Utility Model Content

[0003] The purpose of this invention is to provide an ink leakage prevention device for the printhead connecting pipe of an inkjet printer, which is used to solve the above-mentioned problems.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0005] An ink leakage prevention device for a printer printhead connecting pipe includes a connecting pipe comprising a bottom pipe and an upper pipe. The bottom pipe has a larger diameter than the upper pipe. The bottom pipe is vertically fixed to the printer printhead. The upper pipe is integrally formed on the upper end face of the bottom pipe. A receiving cavity is sleeved on the outer wall of the bottom pipe. The receiving cavity is fixedly connected to the bottom pipe. The inner and outer diameters of the receiving cavity are larger than the inner and outer diameters of the bottom pipe. The inner and outer diameters of the receiving cavity gradually increase from bottom to top, and then gradually decrease. An opening is provided on the upper end face of the sleeve. A horizontal guide tube is fixed on the outer wall of the receiving cavity. A switch is provided on the guide tube.

[0006] Using the above technical solution, the ink tube enters the receiving cavity through the opening at the top of the receiving cavity. The ink tube covers the upper tube of the connecting tube, and the outer wall of the ink tube contacts the inner wall of the opening at the top of the receiving cavity. Ink leaks out from the connection between the ink tube and the connecting tube and flows into the receiving cavity. The receiving cavity catches the ink to prevent it from flowing onto the inkjet printer head, thereby preventing ink from being splashed onto the canvas during the printing process when the print head moves, causing errors in the canvas pattern and resulting in product defects. When there is a lot of ink in the receiving cavity, a water pipe that matches the guide tube can be connected to the guide tube of the receiving cavity, and the switch on the guide tube can be opened to discharge the ink in the receiving cavity.

[0007] Preferably, the switch includes an ink discharge tube, a push rod, and a plug. The ink discharge tube is vertically fixedly connected to the end of the conduit away from the receiving cavity. The two ends of the ink discharge tube are located on the upper and lower sides of the conduit, respectively. An opening is provided on the lower end face of the ink discharge tube. The push rod passes vertically through the upper end face of the ink discharge tube and is slidably connected to the ink discharge tube. A plug is fixedly connected to one end of the push rod inside the ink discharge tube. A limit member is provided between the push rod and the connecting rod.

[0008] Using the above technical solution, when the inkjet printer printhead is printing, the limiting component restricts the push rod, keeping the plug at the end of the limiting rod in the part of the ink discharge tube below the guide tube. The plug blocks the ink in the guide tube, preventing ink from flowing out from the lower end opening of the ink discharge tube. When discharging ink, a water pipe is connected to the lower end outlet of the ink discharge tube. The limiting component drives the push rod to rise, and the push rod drives the plug to rise. The plug moves from the part of the ink discharge tube below the guide tube to the part of the ink discharge tube above the guide tube. The ink in the guide tube flows into the ink discharge tube, then from the ink discharge tube into the water pipe, and finally is discharged.

[0009] Preferably, the limiting component includes a threaded sleeve, which is rotatably connected to the push rod. The inner wall of the threaded sleeve is provided with an internal thread, and the outer wall of the ink discharge pipe is provided with an external thread that matches the internal thread of the threaded sleeve. The threaded sleeve covers the ink discharge pipe, and the threaded sleeve is threadedly connected to the ink discharge pipe.

[0010] Using the above technical solution, tightening the threaded sleeve causes the push rod to rise and fall, which in turn causes the plug to rise and fall.

[0011] Preferably, a plug is threadedly connected to the lower opening of the ink discharge tube.

[0012] By adopting the above technical solution, the cap blocks the lower opening of the ink discharge tube, increasing the sealing of the ink discharge tube and preventing ink from leaking out of the tube during printing.

[0013] Preferably, the plug is spherical.

[0014] By adopting the above technical solution, the resistance encountered by the plug when it rises and falls is reduced.

[0015] Preferably, a rubber ring is fitted over the upper opening of the receiving cavity.

[0016] Using the above technical solution, the ink tube passes through the upper opening of the receiving cavity, and the rubber ring abuts against the outer wall of the ink tube, increasing the sealing between the receiving cavity and the ink tube. Attached Figure Description

[0017] Figure 1 This is an overall schematic diagram of the embodiment;

[0018] Figure 2 This is a front view of an embodiment;

[0019] Figure 3 This is a side view of an embodiment;

[0020] Figure 4 This is a schematic diagram of the cross-section along the AA direction.

[0021] Reference numerals: 1. Printhead; 2. Bottom tube; 3. Upper tube; 4. Receiving cavity; 5. Guide tube; 6. Ink discharge tube; 7. Push rod; 8. Plug; 9. Threaded sleeve; 10. Plug cap. Detailed Implementation

[0022] The following description is merely a preferred embodiment of this utility model, and the scope of protection is not limited to this embodiment. All technical solutions falling within the scope of this utility model should be considered within the protection scope of this utility model. It should also be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

[0023] See Figures 1 to 3 An ink leakage prevention device for a printer printhead connecting pipe includes a printhead 1, with a connecting pipe 2 fixedly connected to the printhead 1. The connecting pipe 2 includes a bottom pipe 3 and an upper pipe 4. The diameter of the bottom pipe 3 is larger than that of the upper pipe 4. The bottom pipe 3 is vertically fixed to the printhead 1, and the upper pipe 4 is integrally formed on the upper end face of the bottom pipe 3. A receiving cavity 5 is sleeved on the outer wall of the bottom pipe 3 and is fixedly connected to the bottom pipe 3. The inner and outer diameters of the receiving cavity 5 are larger than those of the bottom pipe 3. The inner and outer diameters of the receiving cavity 5 gradually increase from bottom to top, and then gradually decrease. An opening is provided on the upper end face of the sleeve, and a rubber ring is fitted on the upper opening of the receiving cavity 5. A horizontal guide tube 6 is fixedly connected to the outer wall of the receiving cavity 5 and communicates with the receiving cavity 5. A vertical ink discharge pipe 7 is fixedly connected to the end of the guide tube 6 away from the receiving cavity 5, with the two ends of the ink discharge pipe 7 located on the upper and lower sides of the guide tube 6, respectively.

[0024] See Figure 4 The lower end face of the ink discharge tube 7 has an opening, and a plug 11 is threadedly connected to the opening. A push rod 8 passes through the upper end face of the ink discharge tube 7 and is slidably connected to the ink discharge tube 7. A spherical plug 9 is fixedly connected to one end of the push rod 8 inside the ink discharge tube 7. The spherical plug 9 can reduce the resistance encountered when it rises and falls. A threaded sleeve 10 is rotatably connected to the other end of the push rod 8 outside the ink discharge tube 7. The inner wall of the threaded sleeve 10 is provided with an internal thread, and the outer wall of the ink discharge tube 7 is provided with an external thread that matches the internal thread of the threaded sleeve 10. The threaded sleeve 10 fits over the ink discharge tube 7 and is threadedly connected to the ink discharge tube 7.

[0025] Working principle: The ink tube enters the receiving cavity 5 through the opening at the upper end of the receiving cavity 5. The ink tube covers the upper tube 4 of the connecting tube 2. The outer wall of the ink tube contacts the rubber ring on the inner wall of the opening at the upper end of the receiving cavity 5. When the inkjet printer printhead 1 is printing, the plug 9 is located in the part of the ink discharge tube 7 below the guide tube 6. When ink leaks from the connection between the ink tube and the connecting tube 2, the receiving cavity 5 will catch the ink. At the same time, the cap 11 and the plug 9 block the ink discharge tube 7, preventing ink from flowing from the ink discharge tube 7 onto the inkjet printer printhead 1. This prevents ink from being splashed onto the canvas during the printing process of the printhead 1, causing errors in the canvas pattern and resulting in product defects. When there is a lot of ink in the receiving cavity 5, connect a water pipe that matches the ink discharge pipe 7 to the lower outlet of the ink discharge pipe 7. The water pipe is an existing leather hose. Tighten the threaded sleeve 10. The threaded sleeve 10 drives the push rod 8 to rise. The push rod 8 drives the plug 9 to rise. The plug 9 moves from the part of the ink discharge pipe 7 located below the conduit 6 to the part of the ink discharge pipe 7 located above the conduit 6. The ink in the conduit 6 flows into the ink discharge pipe 7, and then from the ink discharge pipe 7 into the water pipe, and finally is discharged. When cleaning the printhead 1, the printhead 1 can be removed from the printer, and the printhead 1, connecting pipe 2 and receiving cavity 5 can be rinsed.

Claims

1. A device for preventing ink leakage of a printhead connecting pipe of an inkjet printer, comprising a printhead (1), wherein the printhead (1) is fixedly connected to a connecting pipe (2), the connecting pipe (2) comprising a bottom pipe (3) and an upper pipe (4), the diameter of the bottom pipe (3) being larger than the diameter of the upper pipe (4), the bottom pipe (3) being vertically fixed on the printhead (1) of the inkjet printer, and the upper pipe (4) being integrally formed on the upper end face of the bottom pipe (3), characterized in that, The outer wall of the bottom tube (3) is fitted with a receiving cavity (5), which is fixedly connected to the bottom tube (3). The inner and outer diameters of the receiving cavity (5) are larger than those of the bottom tube (3). The inner and outer diameters of the receiving cavity (5) gradually increase from bottom to top and then gradually decrease. An opening is provided on the upper end face of the sleeve. A horizontal guide tube (6) is fixed on the outer wall of the receiving cavity (5), and a switch is provided on the guide tube (6).

2. The ink leakage prevention device for the printhead connecting pipe of a large-format printer according to claim 1, characterized in that, The switch includes an ink discharge tube (7), a push rod (8), and a plug (9). The ink discharge tube (7) is vertically fixedly connected to the end of the guide tube (6) away from the receiving cavity (5). The two ends of the ink discharge tube (7) are located on the upper and lower sides of the guide tube (6), respectively. An opening is provided on the lower end face of the ink discharge tube (7). The push rod (8) passes vertically through the upper end face of the ink discharge tube (7). The push rod (8) is slidably connected to the ink discharge tube (7). A plug (9) is fixedly connected to one end of the push rod (8) inside the ink discharge tube (7). A limit member is provided between the push rod (8) and the connecting rod.

3. The ink leakage prevention device for the printhead connecting pipe of a large-format printer according to claim 2, characterized in that, The limiting component includes a threaded sleeve (10), which is rotatably connected to the push rod (8). The inner wall of the threaded sleeve (10) is provided with an internal thread, and the outer wall of the ink discharge pipe (7) is provided with an external thread that matches the internal thread of the threaded sleeve (10). The threaded sleeve (10) covers the ink discharge pipe (7), and the threaded sleeve (10) is threadedly connected to the ink discharge pipe (7).

4. The ink leakage prevention device for the printhead connecting pipe of a large-format printer according to claim 2, characterized in that, A plug (11) is threadedly connected to the lower opening of the ink discharge tube (7).

5. The ink leakage prevention device for the printhead connecting pipe of a large-format printer according to claim 2, characterized in that, The plug (9) is spherical.

6. The ink leakage prevention device for the printhead connecting pipe of a large-format printer according to claim 1, characterized in that, The upper opening of the receiving cavity (5) is fitted with a rubber ring.

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