PCB solder resist ink jet printing anti-clogging nozzle

Abstract

The utility model provides a kind of PCB solder mask ink jet printing's anti-clogging nozzle, it is related to PCB manufacturing technical field, including: device shell;The center shaft rod is equipped in the device shell, and its front upper side is equipped with liquid jet, and liquid jet rear is equipped with screen, and screen rear is equipped with liquid resistance plate, and opening is equipped on liquid resistance plate, and opening is consistent with screen size, and liquid resistance plate rear is equipped with ink bin, and pressure pump is equipped in ink bin, and pressure pump outlet is close to liquid resistance plate opening, and liquid inlet pipe is equipped on the device shell of ink bin rear, the utility model prevents the clogging of nozzle by intercepting particle in ink inside, and screen can also be cleaned, prevent the clogging of ink drying condensation, solve the problem that existing equipment cannot clean screen, and screen still can be clogged after ink drying condensation.

Description

Technical Field

[0001] This utility model belongs to the field of PCB manufacturing technology, and more specifically, it relates to an anti-clogging nozzle for PCB solder resist ink printing. Background Technology

[0002] The clogging of solder resist ink printheads is mainly caused by ink drying, impurities, and environmental factors. If not handled in time, it can lead to a decline in printing quality or even equipment damage. Most existing anti-clogging devices screen the ink to prevent large particles inside the screen from clogging the printhead, but they cannot clean the screen. Once the ink on the screen dries and solidifies, clogging will still occur. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides an anti-clogging nozzle for PCB solder resist ink printing, which solves the problem that existing equipment cannot clean the screen and the ink on the screen will still clog after drying and solidifying.

[0004] This utility model discloses an anti-clogging printhead for PCB solder resist ink printing, which is achieved through the following specific technical means:

[0005] An anti-clogging nozzle for PCB solder resist ink printing includes: a device housing; a central shaft is provided inside the device housing, with a spray nozzle on its upper front side, a screen behind the spray nozzle, a liquid blocking plate behind the screen, an opening on the liquid blocking plate with the same size as the screen, an ink tank behind the liquid blocking plate, a pressure pump inside the ink tank, the outlet of the pressure pump being close to the opening of the liquid blocking plate, and an inlet pipe on the device housing behind the ink tank.

[0006] Furthermore, an adjustment plate is provided behind the spray nozzle, the adjustment plate has four sets of openings, each of which is equipped with a screen, and an adjustment component is provided outside the adjustment plate, the adjustment component extending out of the device housing.

[0007] Furthermore, the housing of the device at the corresponding position of the adjusting member is provided with a rotating opening, and a sealing strip is provided on the side of the rotating opening that contacts the adjusting member.

[0008] Furthermore, the device housing is provided with four sets of partitions, which divide the internal space of the device housing into four spaces: ink tank, sodium hydroxide solution tank, cleaning tank, and drying tank.

[0009] Furthermore, a pressure pump is provided behind the sodium hydroxide solution tank. The outlet of the pressure pump is not in close contact with the screen, but is at a certain distance from the screen. The outer casing of the device behind the sodium hydroxide solution tank is provided with an inlet pipe.

[0010] Furthermore, a baffle is provided on the rear side of the cleaning chamber, and an electric telescopic rod is provided in front of the baffle. A small motor is provided inside the front end of the electric telescopic rod. The small motor is connected to a wiping pad. A protruding pad is provided at the front end of the wiping pad. A wiping pad is also provided on the front side of the screen.

[0011] Furthermore, the drying chamber is equipped with a fan, the fan outlet blows directly onto the screen, and the drying chamber has ventilation openings on the corresponding external device casing.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This utility model prevents large particles in the ink from accumulating on the circuit board during printing, thus avoiding circuit board quality problems, by setting up a screen.

[0014] 2. This utility model, by setting up an adjustment plate, an adjusting component, and multiple sets of screens, allows the adjusting component to be rotated to replace the screens when the next printing is started after the end of one printing cycle, thus preventing ink from condensing on the screens and causing blockage.

[0015] 3. This utility model, by setting up a sodium hydroxide solution chamber, a cleaning chamber, and a drying chamber, allows the screen to be rotated after printing. The used screen first enters the sodium hydroxide solution chamber for ink decomposition, then enters the cleaning chamber for solution wiping, and finally enters the drying chamber where a fan dries the screen before it is put back into use. This cycle effectively prevents the device from clogging during printing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the structure of this utility model viewed from below.

[0018] Figure 3 This is a schematic diagram of the internal front view structure of this utility model.

[0019] Figure 4 This is a schematic diagram of the internal rear view structure of this utility model.

[0020] Figure 5 This is a cross-sectional structural diagram of the present invention.

[0021] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0022] 1. Device casing; 101. Ventilation opening;

[0023] 2. Liquid inlet pipe;

[0024] 3. Central shaft;

[0025] 4. Divider;

[0026] 5. Baffle;

[0027] 6. Spray nozzle;

[0028] 7. Replacement plate; 701. Adjusting component;

[0029] 8. Screen;

[0030] 9. Liquid blocking plate;

[0031] 10. Electric telescopic pole;

[0032] 11. Wiping pad; 1101. Small motor;

[0033] 12. Raised soft padding;

[0034] 13. Pressure pump;

[0035] 14. Fan. Detailed Implementation

[0036] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model. Example:

[0037] As attached Figure 1 To be continued Figure 5 As shown:

[0038] This utility model provides an anti-clogging nozzle for PCB solder resist ink printing, comprising: a device housing 1; a central shaft 3 is provided inside the device housing 1, with a spray nozzle 6 on the upper front side of the shaft, a screen 8 behind the spray nozzle 6, a liquid blocking plate 9 behind the screen 8, an opening on the liquid blocking plate 9 with the same size as the screen 8, an ink tank behind the liquid blocking plate 9, a pressure pump 13 inside the ink tank, the outlet of the pressure pump 13 being close to the opening of the liquid blocking plate 9, and an inlet pipe 2 on the device housing 1 behind the ink tank.

[0039] Among them, such as Figures 3 to 5 As shown, a replacement plate 7 is provided behind the ink spray nozzle 6. The replacement plate 7 has four sets of openings, each equipped with a screen 8 to prevent large particles in the ink from accumulating on the circuit board during printing and causing quality problems. An adjustment component 701 is provided outside the replacement plate 7, extending out of the device housing 1. The device housing 1 at the corresponding position of the adjustment component 701 has a rotating opening, and a sealing strip is provided on the side of the rotating opening that contacts the adjustment component 701. When printing one session and starting the next session, the adjustment component 701 is rotated to replace the screen 8, preventing ink from condensing on the screen 8 and causing blockage.

[0040] Among them, such as Figures 3 to 5As shown, the device housing 1 has four sets of partition plates 4 inside, which divide the internal space of the device housing 1 into four spaces: ink tank, sodium hydroxide solution tank, cleaning tank, and drying tank. A pressure pump 13 is located behind the sodium hydroxide solution tank. The outlet of the pressure pump 13 is not directly adjacent to the screen 8, but is at a certain distance from it. An inlet pipe 2 is located behind the sodium hydroxide solution tank in the device housing 1. A baffle 5 is located behind the cleaning tank. An electric telescopic rod 10 is located forward of the baffle 5. A small motor 1101 is located inside the front end of the electric telescopic rod 10. The small motor 1101 is connected to a wiping pad 11. The front end of the pad 11 is provided with a protruding soft pad 12, and the front side of the screen 8 is also provided with a wiping soft pad 11. The drying chamber is provided with a fan 14, and the outlet of the fan 14 blows directly onto the screen 8. The drying chamber is provided with a vent 101 on the external device housing 1. When the screen 8 finishes printing, the changing plate 7 is rotated. The used screen 8 first enters the sodium hydroxide solution chamber for ink decomposition, then enters the cleaning chamber, where the wiping soft pad 11 is used for solution wiping, and finally enters the drying chamber where the fan 14 dries the screen 8 before it is put back into use. This cycle is repeated to effectively prevent the device from clogging during printing.

[0041] The specific usage and function of this embodiment are as follows:

[0042] In this invention, the ink inlet pipe 2 at the rear of the ink tank is connected to an external ink pipeline, and the sodium hydroxide solution inlet pipe 2 at the rear of the ink tank is connected to an external sodium hydroxide pipeline. The pressure pump 13 inside the ink tank sprays ink from the spray nozzle 6. The screen 8 intercepts large particles of ink. When the screen 8 has finished printing, the adjusting component 701 is rotated, that is, the replacement plate 7 is rotated, and a new screen 8 is replaced at the spray nozzle 6. The used screen 8 first enters the sodium hydroxide solution tank for ink decomposition, and then enters the cleaning tank. The electric telescopic rod 10 extends, the wiping pad 11 is pressed against the screen 8, the small motor 1101 rotates, and the wiping pad 11 and the protruding pad 12 wipe the sodium hydroxide solution and dissolved ink on the screen 8. Finally, it enters the drying tank, where the fan 14 dries the screen 8 before it is put into use again.

[0043] Any aspects of this utility model not described in detail are well-known technologies to those skilled in the art.

Claims

1. A clog-resistant jet for PCB solder mask ink jetting, comprising: Device housing (1); characterized in that: the device housing (1) is provided with a central shaft (3) inside, with a spray nozzle (6) on the upper front side, a screen (8) behind the spray nozzle (6), a liquid blocking plate (9) behind the screen (8), an opening on the liquid blocking plate (9) with the same size as the screen (8), an ink tank behind the liquid blocking plate (9), a pressure pump (13) inside the ink tank, the outlet of the pressure pump (13) being close to the opening of the liquid blocking plate (9), and an inlet pipe (2) on the device housing (1) behind the ink tank.

2. A clog-resistant jet for PCB solder resist ink jetting as claimed in claim 1, wherein: An adjustment plate (7) is provided behind the spray nozzle (6). The adjustment plate (7) has four sets of openings, each of which is equipped with a screen (8). An adjustment component (701) is provided outside the adjustment plate (7), and the adjustment component (701) extends out of the device housing (1).

3. The anti-clogging printhead for PCB solder resist ink printing as described in claim 2, characterized in that: The device housing (1) at the corresponding position of the adjusting member (701) is provided with a rotating opening, and a sealing strip is provided on the side of the rotating opening that contacts the adjusting member (701).

4. The anti-clogging printhead for PCB solder resist ink printing as described in claim 1, characterized in that: The device housing (1) is provided with four sets of partition plates (4) inside, which divide the internal space of the device housing (1) into four sets of spaces: ink tank, sodium hydroxide solution tank, cleaning tank and drying tank.

5. The anti-clogging printhead for PCB solder resist ink printing as described in claim 4, characterized in that: A pressure pump (13) is provided behind the sodium hydroxide solution tank. The outlet of the pressure pump (13) is not close to the screen (8), but is a certain distance away from the screen (8). The outer shell (1) of the device behind the sodium hydroxide solution tank is provided with an inlet pipe (2).

6. The anti-clogging printhead for PCB solder resist ink printing as described in claim 4, characterized in that: The cleaning chamber is provided with a baffle (5) at the rear, and an electric telescopic rod (10) is provided in front of the baffle (5). A small motor (1101) is provided inside the front end of the electric telescopic rod (10). The small motor (1101) is connected to the wiping pad (11). A protruding pad (12) is provided at the front end of the wiping pad (11). A wiping pad (11) is also provided in front of the screen (8).

7. The anti-clogging printhead for PCB solder resist ink printing as described in claim 4, characterized in that: The drying chamber is equipped with a fan (14), and the outlet of the fan (14) blows directly onto the screen (8). The drying chamber is equipped with a vent (101) on the outer casing (1) of the corresponding device.

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