Local atmosphere control method of ink-jet printing equipment and application
By using local atmosphere control devices and methods, the problem of printheads being affected by the environment in inkjet printing equipment has been solved, achieving efficient and flexible atmosphere control, improving print quality and stability, reducing energy consumption, and enhancing adaptability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HUZHOU QUAIL FIRE PHOTOELECTRIC CO LTD
- Filing Date
- 2026-01-26
- Publication Date
- 2026-05-05
AI Technical Summary
Existing inkjet printing equipment lacks a technical solution for precise and controllable local atmosphere, which causes the inkjet process of the printhead to be affected by the ambient air, affecting print quality and stability. In addition, the whole machine sealing method has high energy consumption and slow response speed, and cannot adapt to different process requirements.
A local atmosphere control device is adopted, including a support base, an adjustable inkjet assembly, and temperature, humidity, water, and oxygen sensors. A local atmosphere protection is formed through a sealed protective cover, an annular rubber diaphragm, and a gas replacement tube. Nitrogen or inert gas is used to isolate the influence of external air, and the atmosphere parameters are monitored and adjusted by temperature, humidity, water, and oxygen sensors.
It achieves precise and controllable atmosphere at the printhead position, improving print quality and stability, extending printhead life, reducing energy consumption, and enhancing printhead flexibility and adaptability to meet the needs of different printing processes.
Smart Images
Figure CN121973558A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of inkjet printing equipment technology, specifically to a method and application for local atmosphere control in inkjet printing equipment. Background Technology
[0002] Current inkjet printing equipment typically operates in open environments, with the printhead directly exposed to the air. These devices lack a dedicated local atmosphere control system at the printhead location, meaning the ink droplets ejected are directly affected by the oxygen and moisture content of the ambient air. For environmentally sensitive functional inks (such as perovskite precursor solutions and metal salt solutions), oxygen and moisture can cause chemical reactions or degradation, severely impacting the quality and stability of the printed film. Overall sealing methods are energy-intensive, requiring long-term maintenance of an inert atmosphere, resulting in high gas consumption, high operating costs, and slow atmosphere adjustment response. This also limits printhead movement flexibility, making it difficult to maintain a uniform atmosphere within the large cavity, and causing local atmosphere disturbances during printhead movement, reducing printing stability. Furthermore, existing solutions lack adaptability; they cannot flexibly adjust local atmosphere parameters at the printhead according to different process requirements, limiting the application of inkjet printing technology in high-performance device manufacturing. Therefore, there is currently a lack of an atmosphere control technology that can achieve precise and controllable local atmosphere at the printhead location without affecting normal ink ejection and movement of the printhead—this is precisely the innovation of this invention. Summary of the Invention
[0003] The purpose of this invention is to provide a method and application for local atmosphere control in inkjet printing equipment to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, the present invention provides the following technical solution: a local atmosphere control method for an inkjet printing device, which is applied to a local atmosphere control device. The local atmosphere control device includes a support base, an adjustable inkjet assembly, and temperature, humidity, water, and oxygen sensors. A placement platform is symmetrically fixedly installed on the top of the support base. Positioning slots are symmetrically opened on the top of the placement platform on the right side. A sealing protective cover is fixedly installed on the outer surface of the placement platform. The adjustable inkjet assembly is movably installed inside the sealing protective cover. A connecting bracket is fixedly installed on the inner surface of the sealing protective cover. Annular rubber membranes are embedded at equal intervals inside the connecting bracket. A gas replacement tube is embedded on the back of the sealing protective cover. The temperature, humidity, water, and oxygen sensors are fixedly installed on the side of the sealing protective cover.
[0005] Furthermore, the adjustable inkjet assembly includes an electric telescopic rod, which is symmetrically and fixedly installed on the top inner surface of the sealed protective cover. A connecting plate is fixedly installed at the extended end of the electric telescopic rod, and a sealing mechanism is symmetrically installed at the bottom of the connecting plate. A support bracket is symmetrically and fixedly installed at the bottom of the connecting plate. An electric push rod is fixedly connected inside the support bracket, and a front-to-back adjustment mechanism is fixedly connected at the extended end of the electric push rod. A movable inkjet mechanism is movably installed at the bottom of the front-to-back adjustment mechanism.
[0006] Furthermore, the sealing mechanism includes a sealing plate, and locking rods are fixedly installed at equal intervals on the bottom of the sealing plate. Rectangular slide bars are symmetrically installed on both sides of the sealing plate. The external dimensions of the locking rods are adapted to match the internal dimensions of the positioning slots. At the same time, the locking rods form a locking structure with the placement platform through the positioning slots.
[0007] Furthermore, the side of the sealing plate is fixedly connected to the inner side of the rectangular slide bar, and the outer surface of the rectangular slide bar is slidably connected to the inner surface of the sealing cover. The sealing plate and the sealing cover form a sliding structure through the rectangular slide bar.
[0008] Furthermore, the front and rear adjustment mechanism includes a fixed bracket, and T-shaped sliders are symmetrically fixedly installed on the top of the fixed bracket. Fixed plates are symmetrically fixedly connected to the inner surface of the fixed bracket, and a drive motor is installed on the outer side of the fixed plate. At the same time, a drive screw is installed on the output shaft of the drive motor through a coupling. The end of the drive screw is rotatably connected to the inside of the fixed plate.
[0009] Furthermore, the top of the fixed bracket is fixedly connected to the bottom of the T-shaped slider, and the top of the T-shaped slider is slidably connected to the bottom inner surface of the connecting plate, and the fixed bracket forms a sliding structure with the connecting plate through the T-shaped slider.
[0010] Furthermore, the movable inkjet mechanism includes a hollow connecting compartment, and a cross-shaped slider is installed on the top of the hollow connecting compartment. A connecting mechanism is fixedly installed on the top of the cross-shaped slider, and the interior of the connecting mechanism is threadedly connected to the outer surface of the drive screw. Meanwhile, inkjet heads are installed in an array at equal intervals at the bottom of the hollow connecting compartment.
[0011] Furthermore, the number and position of the inkjet heads are in one-to-one correspondence with the number and position of the annular rubber diaphragm, and the internal dimensions of the annular rubber diaphragm are slightly larger than the external dimensions of the inkjet heads.
[0012] Furthermore, the local atmosphere control method includes the following operational steps: S1. Product Placement: The staff places the product to be printed on the top of the storage platform. When the sensor on the bottom left side of the connecting bracket detects the product, the electric telescopic rod starts to move. At this time, the rectangular slider guides the sliding, causing the connecting plate to drive the sealing mechanism and the support bracket to move downward along the inner surface of the sealing cover. When the locking rod is inserted into the positioning slot, the sealing plate automatically completes the sealing of the inlet and outlet of the sealing cover. At the same time, the bottom of the hollow connecting compartment is attached to the top of the connecting bracket, and the inkjet head is automatically inserted into the inside of the annular rubber membrane, thus completing the product placement. S2. Atmosphere Isolation: After the inside of the sealed protective cover is completely sealed, nitrogen or inert gas is injected into the inside of the sealed protective cover through the gas replacement pipe. The oxygen content and humidity in the space between the connecting bracket and the platform are monitored and processed through the temperature, humidity, water and oxygen sensors. When the oxygen content and humidity in this area drop to the set value, the injection of nitrogen or inert gas is stopped. At this time, an atmosphere protection is automatically formed in this area. S3, Inkjet Printing: After the protective atmosphere is formed, ink is delivered into the hollow connecting chamber through the ink supply line. Then, with the cooperation of the inkjet head, the ink is sprayed onto the product surface for inkjet printing. Next, driven by the electric push rod in the support bracket and the sliding of the T-shaped slider, the fixed bracket drives the movable inkjet mechanism to move left and right along the top of the product (at this time, the cooperation of the annular rubber diaphragm ensures that the inkjet head is not disturbed during small-range movements). When the drive motor starts running, it drives the drive screw to rotate inside the fixed plate. At this time, through the connection of the connecting mechanism and the sliding of the cross-shaped slider, the hollow connecting chamber moves back and forth along the bottom of the fixed bracket, so that the inkjet head can perform a more comprehensive printing movement.
[0013] An application of a local atmosphere control device for an inkjet printing equipment, wherein the local atmosphere control device is used for local atmosphere control during the inkjet printing process on the surface of the product to be printed.
[0014] This invention provides a method and application for local atmosphere control in an inkjet printing device, which has the following beneficial effects: 1. This invention utilizes inert gases such as nitrogen and argon, or a low-oxygen and low-water atmosphere, to effectively isolate the influence of external air on ink droplets and the inkjet process. This not only effectively isolates external air interference with ink droplets and film formation, improving print quality and stability, but also protects the printhead from water and oxygen corrosion and impurity contamination to a certain extent, extending the lifespan of the printhead. While achieving atmosphere control, it does not affect the printing and forward / backward / left / right movement of the printhead, effectively ensuring that the printhead maintains flexibility and accuracy throughout its entire working range. Furthermore, the atmosphere parameters are adjustable through the coordination of gas replacement tubes and temperature, humidity, water, and oxygen sensors. This allows for flexible control of oxygen concentration and moisture content according to different printing processes and material requirements, thereby improving the stability, adaptability, and product consistency of the printing process. Therefore, compared to a fully sealed chamber method, it has advantages such as strong adaptability, low energy consumption, good printhead protection, and high process repeatability, demonstrating significant technological advancement and industrial application value.
[0015] 2. The present invention, through the sealing mechanism, enables the electric telescopic rod to automatically seal and open the inlet and outlet of the sealing protective cover while driving the connecting plate to move up and down. This provides convenience for subsequent atmosphere control and also makes it easier for workers to pick up and put down products, thereby improving the processing efficiency of workers to a certain extent. Attached Figure Description
[0016] Figure 1 This is a frontal perspective three-dimensional structural diagram of a local atmosphere control device for an inkjet printing apparatus according to the present invention; Figure 2 This is a rear-view three-dimensional structural diagram of the placement platform-sealed protective cover of a local atmosphere control device for an inkjet printer according to the present invention. Figure 3 This is a side sectional perspective view of the three-dimensional structure of the sealing protective cover of the local atmosphere control device for an inkjet printing equipment according to the present invention. Figure 4 This is a three-dimensional structural diagram of the connecting plate-hollow connecting compartment of a local atmosphere control device for an inkjet printer according to the present invention. Figure 5 This is a three-dimensional structural diagram of the front and rear adjustment mechanism - electric push rod of the local atmosphere control device of an inkjet printing equipment according to the present invention, viewed from below.
[0017] In the diagram: 1. Supporting base; 2. Placing platform; 3. Positioning slot; 4. Sealed protective cover; 5. Adjustable inkjet assembly; 51. Electric telescopic rod; 52. Connecting plate; 53. Sealing mechanism; 531. Sealing plate; 532. Locking rod; 533. Rectangular slide bar; 54. Support bracket; 55. Electric push rod; 56. Front and rear adjustment mechanism; 561. Fixed bracket; 562. T-shaped slider; 563. Fixed plate; 564. Drive motor; 565. Drive screw; 57. Moving inkjet mechanism; 571. Hollow connecting compartment; 572. Cross-shaped slider; 573. Connecting mechanism; 574. Inkjet head; 6. Connecting bracket; 7. Annular rubber diaphragm; 8. Gas replacement tube; 9. Temperature, humidity, water, and oxygen sensor. Detailed Implementation
[0018] The embodiments of the present invention 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 the invention.
[0019] like Figures 1-5As shown, a local atmosphere control method for an inkjet printer is disclosed. This local atmosphere control method is applied to a local atmosphere control device, which includes a support base 1, an adjustable inkjet assembly 5, and temperature, humidity, water, and oxygen sensors 9. A placement platform 2 is symmetrically fixedly mounted on the top of the support base 1. Positioning slots 3 are symmetrically formed on the top of the right side of the placement platform 2. A sealing protective cover 4 is fixedly mounted on the outer surface of the placement platform 2. The adjustable inkjet assembly 5 is movably mounted inside the sealing protective cover 4. The adjustable inkjet assembly 5 includes an electric telescopic rod 51, which is symmetrically fixedly mounted on the top inner surface of the sealing protective cover 4. A connecting plate 52 is fixedly mounted on the extended end of the electric telescopic rod 51, and the bottom of the connecting plate 52... A sealing mechanism 53 is symmetrically installed. The sealing mechanism 53 includes a sealing plate 531, and locking rods 532 are fixedly installed at equal intervals on the bottom of the sealing plate 531. Rectangular slide bars 533 are symmetrically installed on both sides of the sealing plate 531. The sides of the sealing plate 531 are fixedly connected to the inner sides of the rectangular slide bars 533, and the outer surfaces of the rectangular slide bars 533 are slidably connected to the inner surface of the sealing protective cover 4. The sealing plate 531 and the sealing protective cover 4 form a sliding structure through the rectangular slide bars 533. By setting the sealing plate 531 and the sealing protective cover 4 into a sliding structure, the sealing plate 531 moves more smoothly and stably when it moves up and down along the inner surface of the sealing protective cover 4. Moreover, the external dimensions of the locking rods 532 are compatible with the internal dimensions of the positioning slots 3. The locking rod 532 and the placement platform 2 are engaged via the positioning slot 3. Simultaneously, a support bracket 54 is symmetrically fixedly installed at the bottom of the connecting plate 52. An electric push rod 55 is fixedly connected inside the support bracket 54, and a front-to-back adjustment mechanism 56 is fixedly connected to the extension end of the electric push rod 55. The front-to-back adjustment mechanism 56 includes a fixed bracket 561, and T-shaped sliders 562 are symmetrically fixedly installed at the top of the fixed bracket 561. The top of the fixed bracket 561 is fixedly connected to the bottom of the T-shaped slider 562, and the top of the T-shaped slider 562 is slidably connected to the inner bottom surface of the connecting plate 52. The fixed bracket 561 and the connecting plate 52 form a sliding structure via the T-shaped slider 562. The bracket 561 and connecting plate 52 make the fixed bracket 561 move more smoothly and stably along the bottom of the connecting plate 52. A fixed plate 563 is symmetrically fixed to the inner surface of the fixed bracket 561, and a drive motor 564 is mounted on the outer side of the fixed plate 563. A drive screw 565 is mounted on the output shaft of the drive motor 564 via a coupling. The end of the drive screw 565 is rotatably connected to the inside of the fixed plate 563. A movable inkjet mechanism 57 is movably mounted on the bottom of the front-rear adjustment mechanism 56. The movable inkjet mechanism 57 includes a hollow connecting compartment 571, and a cross-shaped slider 572 is mounted on the top of the hollow connecting compartment 571. A connecting mechanism 573 is fixedly mounted on the top of the cross-shaped slider 572.Furthermore, the internal structure of the connecting mechanism 573 is threadedly connected to the external surface of the drive screw 565. Simultaneously, inkjet heads 574 are arranged in an array at equal intervals at the bottom of the hollow connecting chamber 571. The number and position of the inkjet heads 574 correspond one-to-one with the number and position of the annular rubber diaphragm 7. The internal dimensions of the annular rubber diaphragm 7 are slightly larger than the external dimensions of the inkjet heads 574. By setting the internal dimensions of the annular rubber diaphragm 7 to be slightly larger than the external dimensions of the inkjet heads 574, the inkjet heads 574 move more smoothly when squeezed within the annular rubber diaphragm 7. A connecting bracket 6 is fixedly installed on the inner surface of the sealing protective cover 4, and annular rubber diaphragms 7 are embedded at equal intervals inside the connecting bracket 6. A gas replacement tube 8 is embedded on the back of the sealing protective cover 4, and temperature, humidity, water, and oxygen sensors 9 are fixedly installed on the side of the sealing protective cover 4.
[0020] like Figures 1-5 As shown, the local atmosphere control method includes the following operational steps: S1. Product Placement: The staff places the product to be printed on the top of the storage platform 2. When the sensor on the bottom left side of the connecting bracket 6 detects the product, the electric telescopic rod 51 starts to run. At this time, the rectangular slider 533 guides the sliding, causing the connecting plate 52 to drive the sealing mechanism 53 and the support bracket 54 to move downward along the inner surface of the sealing cover 4. When the locking rod 532 is inserted into the positioning slot 3, the sealing plate 531 automatically completes the sealing of the inlet and outlet of the sealing cover 4. At the same time, the bottom of the hollow connecting chamber 571 is attached to the top of the connecting bracket 6, and the inkjet head 574 is automatically inserted into the annular rubber membrane 7, thereby completing the product placement. S2. Atmosphere Isolation: After the interior of the sealed protective cover 4 is completely sealed, nitrogen or inert gas is injected into the interior of the sealed protective cover 4 through the gas replacement pipe 8. The oxygen content and humidity in the space between the connecting bracket 6 and the platform 2 are monitored and processed through the temperature, humidity, water and oxygen sensor 9. When the oxygen content and humidity in this area drop to the set value, the injection of nitrogen or inert gas is stopped. At this time, an atmosphere protection is automatically formed in this area. S3, Inkjet Printing: After the protective atmosphere is formed, ink is delivered into the hollow connecting chamber 571 through the ink supply pipeline. Then, with the cooperation of the inkjet head 574, the ink is sprayed onto the product surface for inkjet printing. Then, driven by the electric push rod 55 in the support bracket 54 and the sliding of the T-shaped slider 562, the fixed bracket 561 drives the movable inkjet mechanism 57 to move left and right along the top of the product (at this time, the cooperation of the annular rubber diaphragm 7 ensures that the inkjet head 574 is not disturbed when making small-range movements). When the drive motor 564 starts running, it drives the drive screw 565 to rotate inside the fixed plate 563. At this time, through the connection of the connecting mechanism 573 and the sliding of the cross-shaped slider 572, the hollow connecting chamber 571 moves back and forth along the bottom of the fixed bracket 561, so that the inkjet head 574 can perform a more comprehensive printing movement.
[0021] like Figures 1-5 As shown, an application of a local atmosphere control device for an inkjet printing equipment is described above. The product is preferably a PCB substrate.
[0022] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.
Claims
1. A method for controlling the local atmosphere of an inkjet printer, characterized in that, The local atmosphere control method is applied to a local atmosphere control device, which includes a support base (1), an adjustable inkjet assembly (5), and a temperature, humidity, water, and oxygen sensor (9). A placement platform (2) is symmetrically fixedly installed on the top of the support base (1). A positioning slot (3) is symmetrically opened on the top of the placement platform (2) on the right side. A sealing protective cover (4) is fixedly installed on the outer surface of the placement platform (2). The adjustable inkjet assembly (5) is movably installed inside the sealing protective cover (4). A connecting bracket (6) is fixedly installed on the inner surface of the sealing protective cover (4). An annular rubber membrane (7) is embedded at equal intervals inside the connecting bracket (6). A gas replacement tube (8) is embedded on the back of the sealing protective cover (4). The temperature, humidity, water, and oxygen sensor (9) is fixedly installed on the side of the sealing protective cover (4).
2. The method for controlling the local atmosphere of an inkjet printer according to claim 1, characterized in that, The adjustable inkjet assembly (5) includes an electric telescopic rod (51), which is symmetrically fixedly installed on the top inner surface of the sealed protective cover (4). A connecting plate (52) is fixedly installed at the extension end of the electric telescopic rod (51), and a sealing mechanism (53) is symmetrically installed at the bottom of the connecting plate (52). A bearing bracket (54) is symmetrically fixedly installed at the bottom of the connecting plate (52). An electric push rod (55) is fixedly connected inside the bearing bracket (54), and a front and rear adjustment mechanism (56) is fixedly connected at the extension end of the electric push rod (55). A movable inkjet mechanism (57) is movably installed at the bottom of the front and rear adjustment mechanism (56).
3. The method for controlling the local atmosphere of an inkjet printer according to claim 2, characterized in that, The sealing mechanism (53) includes a sealing plate (531), and a locking rod (532) is fixedly installed at equal intervals on the bottom of the sealing plate (531). Rectangular slide bars (533) are symmetrically installed on both sides of the sealing plate (531). The external dimensions of the locking rod (532) are adapted to match the internal dimensions of the positioning slot (3). At the same time, the locking rod (532) forms a locking structure with the placement platform (2) through the positioning slot (3).
4. The method for controlling the local atmosphere of an inkjet printer according to claim 3, characterized in that, The side of the sealing plate (531) is fixedly connected to the inner side of the rectangular slide bar (533), and the outer surface of the rectangular slide bar (533) is slidably connected to the inner surface of the sealing cover (4). The sealing plate (531) and the sealing cover (4) form a sliding structure through the rectangular slide bar (533).
5. A method for controlling the local atmosphere of an inkjet printer according to claim 2, characterized in that, The front and rear adjustment mechanism (56) includes a fixed bracket (561), and a T-shaped slider (562) is symmetrically fixedly installed on the top of the fixed bracket (561). A fixed plate (563) is symmetrically fixedly connected to the inner surface of the fixed bracket (561), and a drive motor (564) is installed on the outer side of the fixed plate (563). At the same time, a drive screw (565) is installed on the output shaft of the drive motor (564) through a coupling. The end of the drive screw (565) is rotatably connected to the inside of the fixed plate (563).
6. A method for controlling the local atmosphere of an inkjet printer according to claim 5, characterized in that, The top of the fixed bracket (561) is fixedly connected to the bottom of the T-shaped slider (562), and the top of the T-shaped slider (562) is slidably connected to the bottom inner surface of the connecting plate (52). The fixed bracket (561) and the connecting plate (52) form a sliding structure through the T-shaped slider (562).
7. A method for controlling the local atmosphere of an inkjet printer according to claim 5, characterized in that, The movable inkjet mechanism (57) includes a hollow connecting compartment (571), and a cross-shaped slider (572) is installed on the top of the hollow connecting compartment (571). A connecting mechanism (573) is fixedly installed on the top of the cross-shaped slider (572). The interior of the connecting mechanism (573) is threadedly connected to the outer surface of the drive screw (565). Meanwhile, inkjet heads (574) are installed in an array at equal intervals at the bottom of the hollow connecting compartment (571).
8. A method for controlling the local atmosphere of an inkjet printer according to claim 7, characterized in that, The number and position of the inkjet heads (574) correspond one-to-one with the number and position of the annular rubber diaphragm (7), and the internal dimensions of the annular rubber diaphragm (7) are slightly larger than the external dimensions of the inkjet heads (574).
9. A method for controlling the local atmosphere of an inkjet printer according to claim 1, characterized in that, The local atmosphere control method includes the following steps: S1. Product placement: The staff places the product to be printed on the top of the storage platform (2). When the sensor on the bottom left side of the connecting bracket (6) senses the product, the electric telescopic rod (51) starts to run. At this time, the connecting plate (52) drives the sealing mechanism (53) and the support bracket (54) to move downward along the inner surface of the sealing cover (4) through the guide sliding of the rectangular slide bar (533). When the locking rod (532) is inserted into the positioning slot (3), the sealing plate (531) automatically completes the sealing work of the inlet and outlet of the sealing cover (4). At the same time, the bottom of the hollow connecting compartment (571) is attached to the top of the connecting bracket (6), and the inkjet head (574) is automatically inserted into the inside of the annular rubber membrane (7) to complete the product placement work. S2, Atmosphere Isolation: After the interior of the sealed protective cover (4) is sealed, nitrogen or inert gas is injected into the interior of the sealed protective cover (4) through the gas replacement pipe (8), and the oxygen content and humidity in the space between the connecting bracket (6) and the platform (2) are monitored and processed through the temperature, humidity, water and oxygen sensor (9). When the oxygen content and humidity in the area drop to the set value, the injection of nitrogen or inert gas is stopped, and an atmosphere protection is automatically formed in the area. S3, Inkjet Printing: After the protective atmosphere is formed, ink is delivered into the hollow connecting chamber (571) through the ink supply pipeline. Then, the ink is sprayed onto the product surface for inkjet printing through the cooperation of the inkjet head (574). Then, through the drive of the electric push rod (55) in the support bracket (54) and the sliding of the T-shaped slider (562), the fixed bracket (561) drives the movable inkjet mechanism (57) to move left and right along the top of the product. When the drive motor (564) starts running, it drives the drive screw (565) to rotate inside the fixed plate (563). At this time, through the connection of the connecting mechanism (573) and the sliding of the cross-shaped slider (572), the hollow connecting chamber (571) moves back and forth along the bottom of the fixed bracket (561), so that the inkjet head (574) can perform a more comprehensive printing movement.
10. The application of a local atmosphere control device for an inkjet printing equipment, characterized in that, The local atmosphere control device as described in any one of claims 1-8 is used for local atmosphere control during the inkjet printing process on the surface of the product to be printed.