Ink needle breakage prevention circulating system of digital printing machine

Abstract

The utility model discloses a digital printing machine ink needle breaking prevention circulation system which comprises a high-pressure tank and a low-pressure tank, a first connecting pipe is arranged between an ink outlet of the high-pressure tank and an ink inlet of the low-pressure tank, the middle of the first connecting pipe is connected with an ink box in series, and a second connecting pipe is arranged between a circulation opening of the high-pressure tank and an ink outlet of the low-pressure tank. The middle part of the connecting pipe II is connected in series with a circulating pump; the defoaming mechanism comprises a partition plate, a first ink hole, a rotary disc, a defoaming groove and a second ink hole, the partition plate is arranged in the middle of the inner arc face of the high-pressure tank, and the first ink hole is formed in the upper surface of the partition plate. Sufficient time is provided for floating of bubbles in the ink, the bubbles generated in the circular flowing process of the ink are prevented from entering the ink box, and the probability of needle breakage of the ink of the digital printing machine is reduced.

Description

A digital printing press ink anti-needle breakage circulation system Technical Field

[0001] This utility model relates to the field of digital printing machine technology, specifically to an ink anti-needle breakage circulation system for digital printing machines. Background Technology

[0002] Digital printing presses are printing devices that directly transmit images from computers or other digital sources to printing media using digital technology. They achieve an integrated printing process from computer to printer or from computer to substrate, enabling direct printing from digital files without the plate-making steps of traditional printing, significantly saving time and costs and improving production efficiency. (The following is a separate section: "In the existing technology, the authorized publication number CN...") 215243825U proposes an ink circulation system and printer, including a first ink cartridge, a second ink cartridge, an ink tank, a common circulation ink path that drives the ink in the first ink cartridge to flow into the second ink cartridge, selectively connecting or disconnecting the first ink path of the first and second ink cartridges, a first pressure source for applying negative pressure to the first ink cartridge, and a second ink path; the second ink path includes a first interface connected to the first ink cartridge and a second interface connected to the second ink cartridge. When applied to a circulation printhead, the first ink path is closed, and the second interface and the first interface are respectively connected to the inlet and outlet of the circulation printhead. The first and second ink cartridges form an ink circulation through the common circulation ink path and the second ink path. Although the ink can circulate, air bubbles are prone to appear in the ink during the ink flow process due to the operation of the circulation pump. After entering the ink cartridge, the air bubbles can easily cause ink needle breakage, affecting the normal operation of the digital printing press. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a digital printing press ink anti-needle breakage circulation system. By rotating the turntable, the ink in the defoaming tank is injected into the high-pressure tank along a designated trajectory, providing sufficient time for the bubbles in the ink to rise and preventing the bubbles generated during the ink circulation process from entering the ink cartridge. This reduces the probability of needle breakage in the digital printing press ink and can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a digital printing machine ink anti-needle breakage circulation system, including a high-pressure tank and a low-pressure tank, wherein a connecting pipe is provided between the ink outlet of the high-pressure tank and the ink inlet of the low-pressure tank, an ink cartridge is connected in series in the middle of the connecting pipe, a connecting pipe is provided between the circulation port of the high-pressure tank and the ink outlet of the low-pressure tank, a circulation pump is connected in series in the middle of the connecting pipe, and a defoaming mechanism is also included.

[0005] Defoaming mechanism: It includes a partition, ink hole one, a turntable, a defoaming tank, and ink hole two. The partition is located in the middle of the inner arc surface of the high-pressure tank. The upper surface of the partition is provided with ink hole one. The turntable is rotatably connected to the upper surface of the partition. The upper surface of the turntable is provided with defoaming tanks. The bottom wall of each defoaming tank is provided with ink hole two that cooperates with ink hole one. By rotating the turntable, the ink in the defoaming tank is injected into the high-pressure tank along a designated trajectory, providing sufficient time for the bubbles in the ink to rise and preventing the bubbles generated during the circulation of the ink from entering the ink cartridge, thereby reducing the probability of needle breakage in the digital printing press.

[0006] Furthermore, it also includes a microcontroller, which is located on the left side of the high-pressure tank. The input terminal of the microcontroller is electrically connected to the input terminal of the digital printing machine controller, and the input terminal of the circulating pump is electrically connected to the output terminal of the microcontroller to control the start and stop of the entire device.

[0007] Furthermore, the defoaming mechanism also includes a rotating column and a motor. The rotating column is rotatably connected to the rotating groove in the middle of the partition plate through a sealed bearing. The upper end of the rotating column is fixedly connected to the middle of the lower surface of the turntable. The motor is located on the lower surface of the high-pressure tank. The output shaft of the motor is fixedly connected to the lower end of the rotating column. The input end of the motor is electrically connected to the output end of the microcontroller to provide power for the rotation of the turntable.

[0008] Furthermore, the defoaming mechanism also includes ink inlet holes, which are respectively disposed on the outer arc wall of the defoaming tank to provide space for ink to enter the defoaming tank.

[0009] Furthermore, the defoaming mechanism also includes a filter screen, which is vertically slidably connected to the inside of the defoaming tank. By moving the filter screen, the rising of air bubbles in the ink is accelerated.

[0010] Furthermore, the upper surface of the turntable is provided with an internal hexagonal sliding hole in the middle, and a sliding column is vertically slidably connected inside the internal hexagonal sliding hole. The upper end of the sliding column is provided with a connecting plate, which is slidably connected to the inner arc wall of the defoaming tank. The filter screen is respectively set at the lower end of the connecting plate. A reciprocating screw is rotatably connected to the middle of the bottom wall of the internal hexagonal sliding hole. The upper end of the reciprocating screw is fixedly connected to the top wall of the high pressure tank. The sliding column is slidably connected to the reciprocating screw through a crescent lock, which drives the filter screen to move up and down.

[0011] Furthermore, the outer surface of the filter screen is provided with rubber strips, which are respectively attached to the inner wall of the defoaming tank to push and scrape the air bubbles attached to the inner wall of the defoaming tank.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This digital printing press ink anti-needle breakage circulation system has the following advantages:

[0013] The rotation of the turntable causes the ink in the defoaming tank to be injected into the high-pressure tank along a designated path, providing sufficient time for the air bubbles in the ink to rise and preventing air bubbles generated during the ink circulation process from entering the ink cartridge, thus reducing the probability of needle breakage in digital printing presses. Attached Figure Description

[0014] Figure 1 is a schematic diagram of the structure of this utility model;

[0015] Figure 2 is a structural schematic diagram of the high-pressure tank of this utility model from a frontal cross-section.

[0016] Figure 3 is a schematic diagram of the explosion structure of the defoaming mechanism of this utility model;

[0017] Figure 4 is a schematic diagram of the rotating column of this utility model;

[0018] Figure 5 is a top view of the structure of the first and second ink holes of this utility model.

[0019] In the diagram: 1 High-pressure tank, 2 Low-pressure tank, 3 Connecting pipe one, 4 Ink cartridge, 5 Connecting pipe two, 6 Circulation pump, 7 Defoaming mechanism, 71 Baffle, 72 Ink hole one, 73 Turntable, 74 Defoaming tank, 75 Ink inlet, 76 Rotary column, 77 Motor, 78 Filter screen, 79 Ink hole two, 8 Hexagonal sliding hole, 9 Sliding column, 10 Reciprocating screw, 11 Rubber strip, 12 Microcontroller. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please refer to Figures 1-5. This embodiment provides a technical solution: a digital printing press ink anti-needle breakage circulation system, including a high-pressure tank 1 and a low-pressure tank 2. A connecting pipe 3 is provided between the ink outlet of the high-pressure tank 1 and the ink inlet of the low-pressure tank 2. An ink cartridge 4 is connected in series in the middle of the connecting pipe 3. A connecting pipe 5 is provided between the circulation port of the high-pressure tank 1 and the ink outlet of the low-pressure tank 2. A circulation pump 6 is connected in series in the middle of the connecting pipe 5. Starting the circulation pump 6 provides power for the circulation flow of ink. Under the delivery of the connecting pipe 3 and the connecting pipe 5, the ink circulates sequentially between the high-pressure tank 1, the ink cartridge 4, and the low-pressure tank 2, preventing the ink from solidifying and clogging when the digital printing press is in standby mode. It also includes a microcontroller 12, which is located on the left side of the high-pressure tank 1. The input terminal of the microcontroller 12 is electrically connected to the input terminal of the digital printing press controller. The input terminal of the circulation pump 6 is electrically connected to the output terminal of the microcontroller 12 to control the start and stop of the entire device. It also includes a defoaming mechanism 7.

[0022] Defoaming mechanism 7: It includes a partition 71, ink hole 1 72, a turntable 73, a defoaming tank 74, and ink hole 2 79. The partition 71 is located in the middle of the inner arc surface of the high-pressure tank 1. The upper surface of the partition 71 is provided with ink hole 1 72. The turntable 73 is rotatably connected to the upper surface of the partition 71. The upper surface of the turntable 73 is provided with defoaming tanks 74. The bottom wall of each defoaming tank 74 is provided with ink hole 2 79 that mates with ink hole 1 72. During the ink circulation process, the turntable 73 rotates clockwise. The ink enters the defoaming tank 74 through the connecting pipe 2 5. As the turntable 73 rotates, the ink stops entering the defoaming tank 74. As the turntable 73 rotates, the ink is stored in the defoaming tank 74. The air bubbles in the ink will rise to the surface of the ink, providing a surface for the air bubbles to rise. With ample space, when ink hole 79 coincides with ink hole 72, the space between the lower surface of partition 71 and the inner wall of high-pressure tank 1 is completely filled with ink. As ink continuously flows out from the connecting pipe 3 at the lower end of high-pressure tank 1, the defoamed ink at the lower end of defoaming tank 74 gradually enters the lower end of high-pressure tank 1 through ink hole 72. Due to the arc-shaped groove of ink hole 72, there is always one ink hole 79 coinciding with ink hole 72, ensuring that the defoamed ink is continuously injected into the lower end of high-pressure tank 1. The defoaming mechanism 7 also includes a rotating column 76 and a motor 77. The rotating column 76 is rotatably connected to the rotating groove in the middle of partition 71 through a sealed bearing. The upper end of the rotating column 76 is fixedly connected to the middle of the lower surface of the turntable 73. The motor 77 is located on the lower surface of high-pressure tank 1, and the output shaft of the motor 77 is connected to... The lower end of the rotating column 76 is fixedly connected, and the input end of the motor 77 is electrically connected to the output end of the microcontroller 12 to provide power for the rotation of the turntable 73. The defoaming mechanism 7 also includes an ink inlet 75, which is respectively set on the outer arc wall of the defoaming tank 74. When the ink inlet 75 coincides with the circulation port of the high-pressure tank 1, ink enters the interior of the defoaming tank 74 through the connecting pipe 2 5. As the turntable 73 rotates, when the ink inlet 75 is misaligned with the circulation port of the high-pressure tank 1, the ink stops entering the defoaming tank 74. The defoaming mechanism 7 also includes a filter screen 78, which is vertically slidably connected to the interior of the defoaming tank 74. The upper surface of the turntable 73 is provided with an internal hexagonal sliding hole 8, and a sliding column 9 is vertically slidably connected inside the internal hexagonal sliding hole 8. The upper end of the sliding column 9 is provided with a connecting plate. The connecting plates are slidably connected to the inner arc wall of the defoaming tank 74. Filter screens 78 are respectively set at the lower end of the connecting plates. A reciprocating screw 10 is rotatably connected to the middle of the bottom wall of the hexagonal sliding hole 8. The upper end of the reciprocating screw 10 is fixedly connected to the top wall of the high-pressure tank 1. The sliding column 9 is slidably connected to the reciprocating screw 10 through a crescent lock (the slider at the center of the circular opening of the sliding column 9 is slidably connected to the reciprocating screw 10 through a crescent lock). Rubber strips 11 are provided on the outer surface of the filter screens 78. The rubber strips 11 are respectively attached to the inner wall of the defoaming tank 74. During the rotation of the turntable 73, the vertical sliding connection between the turntable 73 and the sliding column 9 through the hexagonal sliding hole 8 restricts the relative rotation of the turntable 73 and the sliding column 9, so that the turntable 73 drives the sliding column 9 to rotate together. The turntable 73 rotates relative to the lower end of the reciprocating screw 10.The slide column 9 is slidably connected to the reciprocating screw 10 via a crescent lock at its upper end, causing the slide column 9 to move up and down reciprocally. Connected by the connecting plate, this causes the filter screen 78 and rubber strip 11 to move up and down reciprocally. The time required for the filter screen 78 to move once is the same as the time required for the turntable 73 to rotate one revolution. The rubber strip 11 is used to push and scrape the air bubbles attached to the inner wall of the defoaming tank 74, while the filter screen 78 accelerates the upward floating of air bubbles in the ink.

[0023] The working principle of the ink anti-needle breakage circulation system for digital printing machines provided by this utility model is as follows: When the digital printing machine is in standby mode, the microcontroller 12 starts the circulation pump 6 to provide power for the circulation of ink. Under the delivery of connecting pipe 3 and connecting pipe 5, the ink circulates sequentially between the high-pressure tank 1, ink cartridge 4, and low-pressure tank 2, preventing the ink from solidifying and clogging in the standby state of the digital printing machine. During the ink circulation process, the motor 77 is started. The output shaft of the motor 77 drives the rotating column 76 and the turntable 73 to rotate clockwise. When the ink inlet 75 coincides with the circulation port of the high-pressure tank 1, the ink enters the defoaming tank 74 through the connecting pipe 5. As the turntable 73 rotates, when the ink inlet 75 is misaligned with the circulation port of the high-pressure tank 1, the ink stops entering the defoaming tank 74. With the rotation of the turntable 73, the ink is defoamed... The ink is stored in the tank 74. Air bubbles in the ink will rise to the surface of the ink, providing ample space for the bubbles to rise. When ink hole 2 79 coincides with ink hole 1 72, the space between the lower surface of the partition 71 and the inner wall of the high-pressure tank 1 is completely filled with ink. As ink continues to flow out from the connecting pipe 3 at the lower end of the high-pressure tank 1, the defoamed ink at the lower end of the defoaming tank 74 gradually enters the lower end of the high-pressure tank 1 through ink hole 1 72. Due to the arc-shaped groove of ink hole 1 72, there is always one ink hole 2 79 that coincides with ink hole 1 72, ensuring that the defoamed ink is continuously injected into the lower end of the high-pressure tank 1. During the use of the digital printing machine, the ink is continuously injected into the high-pressure tank 1 through the ink inlet pipe of the high-pressure tank 1 by the ink supply pump. The ink also enters the lower end of the high-pressure tank 1 after being defoamed by the defoaming component, preventing air bubbles from entering the ink cartridge 4 and reducing the probability of ink needle breakage.

[0024] It is worth noting that the microcontroller 12 disclosed in the above embodiments can be an AT89C4051 microcontroller, while the motor 77 and the circulating pump 6 can be freely configured according to the actual application scenario. The motor 77 can be a 3M57-42A stepper motor, and the circulating pump 6 can be a 100R-37A circulating pump. The microcontroller 12 controls the operation of the motor 77 and the circulating pump 6 using methods commonly used in the prior art.

[0025] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A digital printing press ink anti-needle breakage circulation system, comprising a high-pressure tank (1) and a low-pressure tank (2), wherein a connecting pipe (3) is provided between the ink outlet of the high-pressure tank (1) and the ink inlet of the low-pressure tank (2), an ink cartridge (4) is connected in series in the middle of the connecting pipe (3), and a connecting pipe (5) is provided between the circulation port of the high-pressure tank (1) and the ink outlet of the low-pressure tank (2), wherein a circulation pump (6) is connected in series in the middle of the connecting pipe (5), characterized in that: It also includes a defoaming mechanism (7); the defoaming mechanism (7) includes a partition (71), ink hole one (72), a turntable (73), a defoaming tank (74) and ink hole two (79). The partition (71) is located in the middle of the inner arc surface of the high pressure tank (1). The upper surface of the partition (71) is provided with ink hole one (72). The upper surface of the partition (71) is rotatably connected to the turntable (73). The upper surface of the turntable (73) is provided with defoaming tanks (74). The bottom wall of the defoaming tank (74) is provided with ink hole two (79) that is installed in conjunction with ink hole one (72).

2. The ink anti-needle breakage circulation system for a digital printing press according to claim 1, characterized in that: It also includes a microcontroller (12), which is located on the left side of the high-pressure tank (1). The input terminal of the microcontroller (12) is electrically connected to the input terminal of the digital printing machine controller, and the input terminal of the circulating pump (6) is electrically connected to the output terminal of the microcontroller (12).

3. The ink anti-needle breakage circulation system for a digital printing press according to claim 2, characterized in that: The defoaming mechanism (7) also includes a rotating column (76) and a motor (77). The rotating column (76) is rotatably connected to the rotating groove in the middle of the partition plate (71) through a sealed bearing. The upper end of the rotating column (76) is fixedly connected to the middle of the lower surface of the turntable (73). The motor (77) is set on the lower surface of the high pressure tank (1). The output shaft of the motor (77) is fixedly connected to the lower end of the rotating column (76). The input end of the motor (77) is electrically connected to the output end of the microcontroller (12).

4. The ink anti-needle breakage circulation system for a digital printing press according to claim 1, characterized in that: The defoaming mechanism (7) also includes an ink inlet hole (75), which is respectively disposed on the outer arc wall of the defoaming tank (74).

5. The ink anti-needle breakage circulation system for a digital printing press according to claim 1, characterized in that: The defoaming mechanism (7) also includes a filter screen (78), which is vertically slidably connected to the inside of the defoaming tank (74).

6. The ink anti-needle breakage circulation system for a digital printing press according to claim 5, characterized in that: The upper surface of the turntable (73) is provided with an internal hexagonal sliding hole (8) in the middle. A sliding column (9) is vertically slidably connected inside the internal hexagonal sliding hole (8). A connecting plate is provided at the upper end of the sliding column (9). The connecting plate is slidably connected to the inner arc wall of the defoaming tank (74). The filter screen (78) is respectively set at the lower end of the connecting plate. A reciprocating screw (10) is rotatably connected to the middle of the bottom wall of the internal hexagonal sliding hole (8). The upper end of the reciprocating screw (10) is fixedly connected to the top wall of the high pressure tank (1). The sliding column (9) is slidably connected to the reciprocating screw (10) through a crescent lock.

7. The ink anti-needle breakage circulation system for a digital printing press according to claim 5, characterized in that: The outer side of the filter screen (78) is provided with rubber strips (11), and the rubber strips (11) are respectively attached to the inner wall of the defoaming tank (74).

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