An inkjet protection structure based on an inkjet device

Abstract

The application discloses an ink jet protection structure based on an ink jet device, and relates to the technical field of ink jet devices.The ink jet protection structure comprises a spraying mechanism, a frame body, an ink jet valve head and a vacuum bottle which are fixedly connected to the frame body, and a protection mechanism which is installed on the spraying mechanism and comprises a rotating assembly fixedly connected to the surface of the frame body, a driving assembly installed on the surface of the frame body and arranged on the rotating assembly, and a protective cover installed on the rotating assembly and sleeved with the lower end of the ink jet valve head.The protection mechanism can prevent the ink jet valve from storing flux, forming solid adhesions and reducing the plugging of the nozzle after the spraying use of the ink jet valve is completed, and can cover the lower end of the ink jet valve after the use is completed, so that the lower end of the ink jet valve is not easy to condense flux droplets even when the ink jet valve is forgotten to be closed, the flux droplets are not easy to oxidize and form sticky residues by being in contact with air for a long time, the plugging is not easy to occur, and the uniformity and precision of subsequent spraying are ensured.

Description

Technical Field

[0001] This invention relates to the field of inkjet device technology, and in particular to an inkjet protection structure based on an inkjet device. Background Technology

[0002] Inkjet printers are devices that spray ink or solution onto a medium surface with micron-level precision through a printhead to output text, images, or textures. Their core function lies in non-contact liquid deposition technology, combined with electronic control systems and precision mechanical structures to meet the printing needs of different scenarios. With the development of technology, innovative inkjet printing applications can be implemented in the semiconductor processing field, enabling online inkjet printing of wafers using a semiconductor online inkjet structure. Online equipment transport and positioning are achieved through an anti-static transport track, and flux spraying on semiconductor wafers is achieved using a high-precision controllable inkjet valve body and XYZ high-precision motion three-axis. High-precision online flux spraying operations can be performed on single to multiple wafer products.

[0003] However, in practical applications, some problems remain unresolved. The following are some common issues with inkjet devices used for flux coating on semiconductor wafers: After the inkjet valves on the inkjet devices are used, flux tends to remain on them. After the residual flux dries on its surface, it easily forms solid deposits, which may clog the nozzles and affect the uniformity and accuracy of subsequent coatings. Furthermore, the lower end of the inkjet valve should not be covered for protection after use, especially if the inkjet valve is left open. The flux droplets that condense at the lower end will oxidize after prolonged contact with the air, forming more viscous residues that are more likely to cause blockages and affect the quality of subsequent coatings. Summary of the Invention

[0004] In view of the problems existing in the above-mentioned inkjet protection structures based on inkjet devices, the present invention is proposed.

[0005] Therefore, the problem to be solved by the present invention is how to solve the problem that flux easily remains on the inkjet valve used on the inkjet device after the spraying is completed, which can easily form solid deposits and may cause nozzle blockage. Furthermore, after the use is completed, the lower end of the inkjet valve cannot be covered for protection, and the flux droplets that condense at the lower end will oxidize after prolonged contact with the air, forming more viscous residues that are more likely to cause blockage and affect the uniformity and accuracy of subsequent spraying.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an inkjet protection structure based on an inkjet device, comprising,

[0007] A spraying mechanism includes a frame on which an inkjet valve head and a vacuum bottle are fixedly connected; and,

[0008] A protective mechanism, installed on the spraying mechanism, includes a rotating assembly fixedly connected to the surface of the frame. A drive assembly is installed on the surface of the frame and disposed on the rotating assembly. A protective cover is installed on the rotating assembly and fitted onto the lower end of the inkjet valve head. A linkage is installed at the lower end of the inkjet valve head. A scraper is fixedly connected to the linkage. A drive column is fixedly connected to the inner wall of the protective cover and cooperates with the linkage. An adjustment assembly is installed on the frame and disposed on the surface of the vacuum bottle and the drive assembly.

[0009] As a preferred embodiment of the inkjet protection structure based on the inkjet device described in this invention, the rotating assembly includes a fixed plate symmetrically fixedly connected to the frame, a rotating rod rotatably connected to the fixed plate, a gear and a connecting plate respectively sleeved at both ends of the rotating rod, a connecting rod rotatably connected to one end of the connecting plate, one end of the connecting rod being fixedly connected to the outer surface of the protective cover, and a movable plate rotatably connected between two adjacent connecting plates.

[0010] As a preferred embodiment of the inkjet protection structure based on the inkjet device of the present invention, the driving component includes a fixed block fixedly connected to the frame, a horizontal plate slidably connected to the fixed block, the driving component includes a vertical plate, a first guide hole is provided on the vertical plate, and a first roller is rotatably connected to one end of the horizontal plate and slidably connected in the first guide hole.

[0011] As a preferred embodiment of the inkjet protection structure based on the inkjet device of the present invention, the horizontal plate is provided with a second guide hole, the surface of the horizontal plate is fixedly connected with teeth and meshes with gears, the horizontal plate is provided with a through hole, the top of the fixed plate is fixedly connected with a connecting block, the connecting block is rotatably connected with a second roller sleeve and is slidably connected in the through hole.

[0012] As a preferred embodiment of the inkjet protection structure based on the inkjet device of the present invention, the linkage includes a support member fixedly connected to the bottom of the inkjet valve head, a drive member is mounted on the support member and cooperates with the drive column, an inclined plate is fixedly connected to the bottom of the drive member, the support member includes a short plate fixedly connected to the bottom of the inkjet valve head, a guide rod is fixedly connected to the short plate, a support plate is sleeved on the surface of the guide rod, a scraper is fixedly connected to the support plate, a first spring is sleeved on the surface of the guide rod, and its two ends are fixedly connected to the surfaces of the short plate and the support plate, respectively.

[0013] As a preferred embodiment of the inkjet protection structure based on the inkjet device of the present invention, the driving component includes a driving plate fixedly connected to the surface of the support plate, a T-shaped plate slidably connected inside the driving plate and fixedly connected to the upper end of the inclined plate, a second spring fixedly connected between the inner wall of the driving plate and the upper end of the T-shaped plate, a limiting groove is formed on the driving plate, and a limiting block is fixedly connected to the upper surface of the T-shaped plate and slidably connected within the limiting groove.

[0014] As a preferred embodiment of the inkjet protection structure based on the inkjet device of the present invention, the adjustment component includes a fixing ring fixedly connected to the surface of the frame, a cylinder fixedly connected to the inner surface of the fixing ring, a connecting pipe communicating between the upper end of the cylinder and the vacuum bottle, a piston slidably connected inside the connecting pipe, a reinforcing block fixedly connected to the surface of the frame, a moving rod slidably connected to the reinforcing block and the cylinder and fixedly connected to the bottom of the piston, and a third roller sleeve rotatably connected to the lower end of the moving rod and slidably connected inside the second guide hole.

[0015] As a preferred embodiment of the inkjet protection structure based on the inkjet device described in this invention, a partition is fixedly connected to the inner wall of the protective cover, and a rubber pad is fixedly connected to the top of the protective cover.

[0016] As a preferred embodiment of the inkjet protection structure based on the inkjet device described in this invention, the spraying mechanism further includes an inkjet valve control board, a secondary ink cartridge, a secondary filter, an industrial camera, a coaxial light source, and a laser height sensor fixedly connected to the frame, and a cover is fixedly connected to the outer surface of the frame.

[0017] As a preferred embodiment of the inkjet protection structure based on the inkjet device described in this invention, it further includes an inkjet device body, the inkjet device body including a shell, a frame fixedly connected to the inner wall of the shell, a conveying mechanism, a three-axis motion mechanism, a positioning mechanism, a precision weighing and detection mechanism and a control system module respectively installed on the frame, the vertical plate fixedly connected to the Z-axis linear module of the three-axis motion mechanism, and the frame fixedly connected to the surface of the moving part on the Z-axis linear module of the three-axis motion mechanism.

[0018] The beneficial effects of this invention are as follows: the protective mechanism makes it less likely for flux to remain on the inkjet valve after spraying, thus reducing the formation of solid deposits and nozzle clogging. Furthermore, the lower end of the inkjet valve can be covered and protected after use, so even if the inkjet valve is left open, flux droplets are less likely to condense at the lower end, reducing the formation of sticky residues due to prolonged contact with air and oxidation, which can easily cause clogging and ensure the uniformity and accuracy of subsequent spraying. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A partial three-dimensional structure of the inkjet protection structure based on an inkjet device. Figure 1 .

[0021] Figure 2 A partial three-dimensional structure of the inkjet protection structure based on an inkjet device. Figure 2 .

[0022] Figure 3 This is a partial cross-sectional three-dimensional structural diagram of the protective cover for an inkjet protection structure based on an inkjet device.

[0023] Figure 4 Inkjet protection structure based on inkjet device Figure 2 A magnified structural diagram of A in the middle.

[0024] Figure 5 Inkjet protection structure based on inkjet device Figure 3 Enlarged structural diagram of B in the middle.

[0025] Figure 6 This is a partial planar structural diagram of the inkjet protection structure based on an inkjet device.

[0026] Figure 7 This is a three-dimensional structural diagram showing the separation of the vertical plate and the first roller sleeve in the inkjet protection structure based on the inkjet device.

[0027] Figure 8 This is a three-dimensional structural diagram of the inclined plate and guide rod of the inkjet protection structure based on the inkjet device.

[0028] Figure 9 This is a partial cross-sectional plan view of the inkjet protection structure based on an inkjet device.

[0029] Figure 10 Inkjet protection structure based on inkjet device Figure 9 A magnified structural diagram of C.

[0030] Figure 11 This is a cross-sectional three-dimensional structural diagram of the protective cover and partition of the inkjet protection structure based on the inkjet device.

[0031] Figure 12 Inkjet protection structure based on inkjet device Figure 11 A magnified structural diagram of D.

[0032] Figure 13 This is a cross-sectional plan view showing the partial structural changes of the inkjet protection structure based on the inkjet device.

[0033] Figure 14 This is a three-dimensional structural diagram of the inkjet valve control board and the secondary ink cartridge based on the inkjet protection structure of the inkjet device.

[0034] Figure 15 This is a three-dimensional structural diagram of an industrial camera and laser height sensor based on an inkjet protective structure of an inkjet device.

[0035] Figure 16 This is a three-dimensional structural diagram of the inkjet protection structure based on an inkjet device.

[0036] Figure 17 This is a partial three-dimensional structural diagram of the frame and conveying mechanism based on the inkjet protection structure of the inkjet device.

[0037] Figure 18 This is a partial three-dimensional structural diagram of a coating mechanism and a precision weighing and detection mechanism based on an inkjet device and an inkjet protective structure.

[0038] In the diagram: 1. Spraying mechanism; 11. Frame; 12. Inkjet valve head; 13. Vacuum bottle; 14. Inkjet valve control board; 15. Secondary ink cartridge; 16. Secondary filter; 17. Industrial camera; 18. Coaxial light source; 19. Laser height sensor; 110. Cover; 2. Protection mechanism; 21. Rotating assembly; 22. Drive assembly; 23. Protective cover; 24. Linkage component; 25. Scraper; 26. Drive column; 27. Adjustment assembly; 28. Partition plate; 29. ​​Rubber pad; 21-1. Fixing plate; 21-2. Rotating rod; 21-3. Gear; 21-4. Connecting plate; 21-5. Connecting rod; 21-6. Movable plate; 22-1. Fixing block; 22-2. Horizontal plate; 22-3. Vertical plate; 22-4. First guide hole; 22-5. First roller sleeve; 22-6. Second guide hole; 22-7. Gear 22-8. Tooth; 22-9. Through hole; 22-10. Connecting block; 22-10. Second rolling sleeve; 24-1. Support component; 24-2. Driving component; 24-3. Inclined plate; 24-11. Short plate; 24-12. Guide rod; 24-13. Support plate; 24-14. First spring; 24-21. Driving plate; 24-22. T-shaped plate; 24-23. Second spring; 24-24. Limiting groove; 24 -25. Limiting block; 27-1. Fixing ring; 27-2. Cylinder; 27-3. Connecting pipe; 27-4. Piston; 27-5. Reinforcing block; 27-6. Moving rod; 27-7. Third roller sleeve; 3. Inkjet unit body; 31. Housing; 32. Frame; 33. Conveying mechanism; 34. Three-axis motion mechanism; 35. Positioning mechanism; 36. Precision weighing and detection mechanism; 37. Control system module. Detailed Implementation

[0039] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0040] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0041] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0042] Example 1

[0043] Reference Figures 1-3 This is the first embodiment of the present invention. This embodiment provides an inkjet protection structure based on an inkjet device. The inkjet protection structure based on an inkjet device includes a spraying mechanism 1 and a protection mechanism 2. The spraying mechanism 1 enables the spraying of flux on semiconductor wafers. The protection mechanism 2 prevents flux from easily remaining on the inkjet valve after spraying. After use, the lower end of the inkjet valve is covered for protection, reducing the formation of sticky residues due to oxidation from prolonged contact with air, and preventing clogging.

[0044] Specifically, the spraying mechanism 1 includes a frame 11, on which an inkjet valve head 12 and a vacuum bottle 13 are fixedly connected respectively.

[0045] The inkjet valve head 12 is used to eject ink and can also be opened and closed. This is existing technology. The working principle of this part is also existing technology, which can be clearly understood by those skilled in the art, and will not be described in detail here. The vacuum bottle 13 is used to remove the air inside the secondary ink cartridge 15. The vacuum bottle 13 is equipped with a dynamic balancing device for the negative pressure system, which is not shown in the figure. The negative pressure system maintains the stability of the flux at the printhead by working intermittently through a negative pressure air pump or a peristaltic pump.

[0046] When the system detects that the negative pressure value deviates from the set range, the air pump will start to adjust the pressure, ensuring that the flux neither overflows by itself nor causes ink interruption due to excessive negative pressure. The system monitors pressure fluctuations in real time through sensors and triggers the air extraction action only when the pressure is unbalanced. For example, the secondary ink cartridge 15 dynamically balances the gravity of the flux and the negative pressure pull through the peristaltic pump and the air cylinder. This is existing technology. The working principle of this part is also existing technology, which can be clearly understood by those skilled in the art, and will not be described in detail here.

[0047] Specifically, the protective mechanism 2 is installed on the spraying mechanism 1 and includes a rotating component 21 fixedly connected to the surface of the frame 11. A drive component 22 is installed on the surface of the frame 11 and is set on the rotating component 21. Through the setting of the drive component 22, when the frame 11 is driven up and down by the Z-axis linear module of the three-axis motion mechanism 34, the rotating component 21 can be driven, thereby causing the protective cover 23 to rotate open and detach from the lower end of the inkjet valve head 12 or rotate closed and latch onto it. When the inkjet device is running, the downward movement of the frame 11 to open the inkjet operation and the upward movement to close the inkjet operation correspond to each other. During the opening of the downward movement device of the inkjet valve head 12, the protective cover 23 gradually rotates and detaches from the lower end of the inkjet valve head 12.

[0048] During the closing process of the inkjet valve head 12 upward movement device, the protective cover 23 gradually rotates and detaches from the lower end of the inkjet valve head 12, isolating it from the air. This reduces the curing of flux at the lower end of the inkjet valve head 12 after prolonged periods of non-use, and reduces the likelihood of the quantum dot flux at the lower end of the inkjet valve head 12 agglomerating and precipitating after contact with water and oxygen, thus clogging the inkjet valve head 12. Furthermore, when the cover is closed after use, it can catch and collect any dripping flux, reducing the impact on equipment operation.

[0049] A protective cover 23 is installed on the rotating assembly 21 and fitted onto the lower end of the inkjet valve head 12. A linkage 24 is installed at the lower end of the inkjet valve head 12, and a scraper 25 is fixedly connected to the linkage 24. A drive column 26 is fixedly connected to the inner wall of the protective cover 23 and cooperates with the linkage 24. Through the setting of the linkage 24, when the drive column 26 moves with the protective cover 23, it acts on the linkage 24, thereby driving the scraper 25 to move. When the equipment is turned off, the scraper 25 is driven to move once, thereby scraping off the flux attached to the lower end of the inkjet valve head 12 after inkjet printing, reducing the solidification of flux at the lower end of the inkjet valve head 12. During this process, the protective cover 23 always runs below the scraper 25, which can effectively collect the scraped flux.

[0050] When the equipment is turned on, the scraper 25 is driven to move back to its original position, thereby scraping off any solidified flux that may be attached to the lower end of the inkjet valve head 12 after inkjet printing is completed. This prevents blockage of the lower end of the inkjet valve head 12 during the spraying operation. During this process, the protective cover 23 is also opened and remains below the scraper 25, effectively collecting the scraped flux. After scraping is completed, the drive column 26 on the protective cover 23 disengages from the linkage 24, and the scraper 25 disengages from the lower end of the inkjet valve head 12 without affecting the normal spraying operation. The protective cover 23 continues to rotate and open until it stops.

[0051] An adjustment component 27 is installed on the frame 11 and is located on the surface of the vacuum bottle 13 and the drive component 24-2. By adjusting the component 27, during the upward movement of the frame 11 after spraying, the negative pressure in the vacuum bottle 13 is slightly increased under the action of the drive component 22, preventing the flux in the secondary ink cartridge 15 from entering the vacuum bottle 13. At the same time, it acts on the flux in the pipeline, making it difficult for flux droplets to condense at the lower end of the inkjet valve head 12. Even during the upward movement of the inkjet valve head 12, no flux drips, preventing waste. When the spraying operation needs to be started, during the downward movement of the frame 11, the adjustment component 27 restores the negative pressure in the vacuum bottle 13 to normal under the action of the drive component 22, thereby bringing it into dynamic balance of the negative pressure system to meet the usage requirements.

[0052] Example 2

[0053] Reference Figures 2 to 13 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0054] Specifically, the rotating assembly 21 includes a fixed plate 21-1 symmetrically fixedly connected to the frame 11. A rotating rod 21-2 is rotatably connected to the fixed plate 21-1. A gear 21-3 and a connecting plate 21-4 are respectively sleeved at both ends of the rotating rod 21-2. A connecting rod 21-5 is rotatably connected to one end of the connecting plate 21-4. One end of the connecting rod 21-5 is fixedly connected to the outer surface of the protective cover 23. A movable plate 21-6 is rotatably connected between two adjacent connecting plates 21-4.

[0055] There are two fixed plates 21-1 and two rotating rods 21-2. Both rotating rods 21-2 are rotatably connected to the fixed plates 21-1 through bearings. The gear 21-3 and the connecting plate 21-4 are fixedly connected to the rotating rods 21-2. The two adjacent connecting plates 21-4 are rotatably connected to the two connecting rods 21-5, forming a parallelogram. When the gear 21-3 rotates and drives the rotating rods 21-2 to rotate the connecting plates 21-4, the two connecting plates 21-4 are always in a flat state.

[0056] Meanwhile, the connecting rod 21-5 is rotatably connected to the connecting plate 21-4, so that when the connecting plate 21-4 rotates, it can drive the protective cover 23 to rotate. The opening of the protective cover 23 is always upward, and it can be operated when it is fastened and opened from the lower end of the inkjet valve head 12. At the same time, when the scraper 25 is cleaning, the protective cover 23 can always catch and collect the scraped flux. The movable plate 21-6 is set to reinforce the two adjacent connecting plates 21-4 without affecting normal rotation.

[0057] The drive assembly 22 includes a fixing block 22-1 fixedly connected to the frame 11. A horizontal plate 22-2 is slidably connected to the fixing block 22-1. Two fixing blocks 22-1 are provided on one horizontal plate 22-2. The horizontal plate 22-2 passes through the fixing block 22-1 and is slidably connected to it. The drive assembly 22 includes a vertical plate 22-3. A first guide hole 22-4 is provided on the vertical plate 22-3. A first roller sleeve 22-5 is rotatably connected to one end of the horizontal plate 22-2 and is slidably connected in the first guide hole 22-4.

[0058] The first guide hole 22-4 is divided into three parts. The first and third parts are such that the first roller sleeve 22-5 does not move the horizontal plate 22-2 when it moves inside. The second part is such that the first roller sleeve 22-5 can move the horizontal plate 22-2 when it moves inside. During the downward movement of the frame 11, the first roller sleeve 22-5 moves from the first part through the second part into the third part. In this process, the rotating component 21 is driven, so that the protective cover 23 is disengaged from the lower end of the inkjet valve head 12 and opened. Conversely, it is closed. The opening and closing of the protective cover 23 is achieved by adjusting the height of the inkjet valve head 12 during the operation and closing of the device.

[0059] A second guide hole 22-6 is provided on the horizontal plate 22-2. The second guide hole 22-6 is divided into three parts. The first and third parts are where the third roller sleeve 27-7 moves without causing the moving rod 27-6 to move. The second part is where the third roller sleeve 27-7 moves and causes the moving rod 27-6 to move. During the process of the frame 11 moving down and causing the horizontal plate 22-2 to move down, the first roller sleeve 22-5 moves within the first guide hole 22-4 and acts on the horizontal plate 22-2 to move. This causes the third roller sleeve 27-7 to move from the first part through the second part into the third part, moving the moving rod 27-6 and the piston 27-4 upward, thereby restoring the negative pressure in the vacuum bottle 13 to normal and bringing it into dynamic balance of the negative pressure system.

[0060] Conversely, during the process of the frame 11 and the inkjet valve head 12 moving upward and resetting, the negative pressure in the vacuum bottle 13 is slightly increased to act on the flux in the pipeline. Even if the inkjet valve head 12 is not closed after the coating process is completed, there will be no flux dripping, preventing waste. At the same time, flux droplets are less likely to condense at the lower end of the inkjet valve head 12.

[0061] A tooth 22-7 is fixedly connected to the surface of the horizontal plate 22-2, and it meshes with the gear 21-3. Through the setting of the tooth 22-7, when it moves with the horizontal plate 22-2, it can drive the gear 21-3 to rotate, thereby causing the connecting plate 21-4 to rotate, which correspondingly realizes the opening and closing of the protective cover 23. A through hole 22-8 is provided on the horizontal plate 22-2. A connecting block 22-9 is fixedly connected to the top of the fixed plate 21-1. A second roller sleeve 22-10 is rotatably connected to the connecting block 22-9 and is slidably connected in the through hole 22-8. Through the setting of the through hole 22-8 and the second roller sleeve 22-10, the horizontal plate 22-2 is guided and supported, and it is subjected to less resistance when moving.

[0062] Example 3

[0063] Reference Figures 2 to 13 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0064] Specifically, the linkage 24 includes a support 24-1 fixedly connected to the bottom of the inkjet valve head 12. The support 24-1 can support the scraper 25. A drive 24-2 is installed on the support 24-1 and cooperates with the drive column 26. The drive column 26 moves in the gap between the two drive 24-2, thereby driving the drive 24-2, the support plate 24-13 and the scraper 25 to move and clean the lower end of the inkjet valve head 12. An inclined plate 24-3 is fixedly connected to the bottom of the drive 24-2.

[0065] With the inclined plate 24-3 in place, when the protective cover 23 rotates and needs to be fastened to the lower end of the inkjet valve head 12, the drive column 26 moves with the protective cover 23, allowing the drive column 26 to smoothly enter between the two extended drive components 24-2. Then, the drive column 26 moves with the operation of the protective cover 23, driving the drive component 24-2 to move, which in turn drives the support plate 24-13 and the scraper 25 to move, thus realizing the cleaning operation. Conversely, when the protective cover 23 is opened, it can smoothly disengage from the drive component 24-2, and the drive component 24-2 can be reset after compression.

[0066] The support component 24-1 includes a short plate 24-11 fixedly connected to the bottom of the inkjet valve head 12. A guide rod 24-12 is fixedly connected to the short plate 24-11. A support plate 24-13 is sleeved on the surface of the guide rod 24-12. There are four short plates 24-11. There are two guide rods 24-12 and two first springs 24-14. One guide rod 24-12 is fixed to two short plates 24-11. The guide rod 24-12 guides and supports the support plate 24-13. The scraper 25 is fixedly connected to the support plate 24-13.

[0067] A first spring 24-14 is fitted on the surface of the guide rod 24-12, and its two ends are fixedly connected to the surfaces of the short plate 24-11 and the support plate 24-13, respectively. The first spring 24-14 is stretched when the drive member 24-2 moves and drives the support plate 24-13 to move, providing a force for resetting when opened, and limiting the support plate 24-13 after opening. When the non-drive support plate 24-13 moves, it will not move along with the scraper 25, thus avoiding obstruction during spraying.

[0068] The driving component 24-2 includes a driving plate 24-21 fixedly connected to the surface of the support plate 24-13. A T-shaped plate 24-22 is slidably connected inside the driving plate 24-21 and is fixedly connected to the upper end of the inclined plate 24-3. Through the arrangement of the driving plate 24-21 and the T-shaped plate 24-22, during the rotation and movement of the protective cover 23, the driving column 26 moves between the two driving components 24-2 by means of the inclined plate 24-3, and then rotates and moves to act on the horizontal plate 22-2. As the protective cover 23 rotates and moves, the inclined plate 24-3 contacts the inner wall of the protective cover 23 and acts on it. The T-shaped plate 24-22 can move inside the driving plate 24-21, and the driving column 26 is always located between the two driving components 24-2, without affecting the driving operation until the operation is completed.

[0069] A second spring 24-23 is fixedly connected between the inner wall of the drive plate 24-21 and the upper end of the T-shaped plate 24-22. The second spring 24-23 compresses the T-shaped plate 24-22 when it moves upward within the drive plate 24-21, providing a force for the T-shaped plate 24-22 to be reset when the protective cover 23 is opened. A limiting groove 24-24 is provided on the drive plate 24-21, and a limiting block 24-25 is fixedly connected to the upper surface of the T-shaped plate 24-22 and slides within the limiting groove 24-24. The limiting groove 24-24 and the limiting block 24-25 limit and guide the T-shaped plate 24-22, preventing it from detaching from the drive plate 24-21 during the rebound of the second spring 24-23.

[0070] The adjustment assembly 27 includes a fixing ring 27-1 fixedly connected to the surface of the frame 11. A cylinder 27-2 is fixedly connected to the inner surface of the fixing ring 27-1. Two fixing plates 21-1 are provided on one cylinder 27-2 to fix the cylinder 27-2 to the frame 11. A connecting pipe 27-3 is connected between the upper end of the cylinder 27-2 and the vacuum bottle 13. A piston 27-4 is slidably connected inside the connecting pipe 27-3. A sealing ring is provided between the piston 27-4 and the cylinder 27-2 to seal them and prevent gas from leaking from the gap between them. A reinforcing block 27-5 is fixedly connected to the surface of the frame 11. A moving rod 27-6 is slidably connected to the reinforcing block 27-5 and the cylinder 27-2 and is fixedly connected to the bottom of the piston 27-4. The moving rod 27-6 passes through the reinforcing block 27-5 and the cylinder 27-2 and is slidably connected to them.

[0071] The lower end of the moving rod 27-6 is rotatably connected to the third roller sleeve 27-7, which is slidably connected in the second guide hole 22-6. Through the setting of the third roller sleeve 27-7, during the process of the frame 11 moving down and driving the horizontal plate 22-2 down, it moves in the second guide hole 22-6, moving the moving rod 27-6 and the piston 27-4 up, so as to restore the negative pressure in the vacuum bottle 13 to normal, and thus put it in dynamic balance of the negative pressure system. Conversely, during the process of the frame 11 and the inkjet valve head 12 moving up and resetting, the negative pressure in the vacuum bottle 13 is slightly increased, which acts on the flux in the pipeline. Even if the inkjet valve head 12 is not closed after the spraying is completed, there will be no flux dripping, preventing waste.

[0072] A partition 28 is fixedly connected to the inner wall of the protective cover 23. There are two partitions 28 fixedly connected inside the protective cover 23 and they are symmetrically distributed. By setting the partitions 28, the waste collected inside the protective cover 23 can be separated from the driving component 24-2 that subsequently enters it, so as to prevent the waste from adhering to the driving component 24-2 and dripping. A rubber pad 29 is fixedly connected to the top of the protective cover 23. By setting the rubber pad 29, it plays a sealing role when the protective cover 23 is fastened to the lower end of the inkjet valve head 12, reducing the contact with air, and plays a buffer protection role when closed.

[0073] Example 4

[0074] Reference Figures 14-18 This is the fourth embodiment of the present invention, which is based on the first three embodiments.

[0075] Specifically, the spraying mechanism 1 also includes an inkjet valve control board 14, a secondary ink cartridge 15, a secondary filter 16, an industrial camera 17, a coaxial light source 18, and a laser height sensor 19, all fixedly connected to the frame 11. A cover 110 is fixedly connected to the outer surface of the frame 11.

[0076] The connection method of the inkjet valve head 12, vacuum bottle 13, secondary ink cartridge 15 and secondary filter 16 is existing technology. The working principle of this part is also existing technology, which can be clearly understood by those skilled in the art, and will not be described in detail here. The connection and control method of the inkjet valve control board 14 with the inkjet valve head 12, industrial camera 17, coaxial light source 18 and laser height sensor 19 is existing technology. The working principle of this part is also existing technology, which can be clearly understood by those skilled in the art, and will not be described in detail here.

[0077] The spraying mechanism 1 moves to the product area, and the laser height sensor 19 detects the actual height position of the product. The distance between the spraying mechanism 1 and the product is corrected. The industrial camera 17 takes pictures and identifies the product angle and position deviation, compares it with the set value, and corrects it to the workable set value. The inkjet valve head 12 sprays ink onto the product according to the set value. The flux ink is extracted from the ink cartridge, separated by the secondary ink cartridge 15, and the vacuum bottle 13 removes the air from the secondary ink cartridge 15. The flux ink is supplied from the secondary ink cartridge 15, passes through the secondary filter 16 to remove impurities, and reaches the inkjet valve head 12. Through the above actions, each product is sprayed.

[0078] It also includes an inkjet device body 3, which includes a housing 31. A frame 32 is fixedly connected to the inner wall of the housing 31. A conveying mechanism 33, a three-axis motion mechanism 34, a positioning mechanism 35, a precision weighing and detection mechanism 36, and a control system module 37 are respectively installed on the frame 32. A vertical plate 22-3 is fixedly connected to the Z-axis linear module of the three-axis motion mechanism 34. The frame 11 is fixedly connected to the surface of the moving part on the Z-axis linear module of the three-axis motion mechanism 34.

[0079] The control system module 37 controls the operation and stopping of the conveying mechanism 33, the three-axis motion mechanism 34, the positioning mechanism 35, and the precision weighing and detection mechanism 36, which are existing technologies. The working principles of this part are also existing technologies, which are clearly understood by those skilled in the art and will not be elaborated upon here. The conveying mechanism 33 is used for docking between equipment and for online product transport. The spraying mechanism 1 is used for product spraying. The positioning mechanism 35 independently and accurately positions the product. The precision weighing and detection mechanism 36 controls and detects the ink volume before spraying. The three-axis motion mechanism 34 loads the spraying mechanism 1 to realize multiple product positions and graphic operations. The control system module 37 is used for mechanism operation, data monitoring, and uploading. The equipment operation process is roughly as follows:

[0080] Product conveying mechanism 33 conveys the operation area, and positioning mechanism 35 fixes the products;

[0081] The precision weighing and testing mechanism 36 checks the spraying accuracy and corrects the data before spraying;

[0082] Visual inspection data and correction data of product deviation on spraying mechanism 1;

[0083] The spraying unit 1 applies precise flux metering to the product according to the required spraying data.

[0084] In use, when the spraying mechanism 1 moves down, the first roller sleeve 22-5 moves in the first guide hole 22-4 on the vertical plate 22-3, which in turn moves the horizontal plate 22-2, causing the teeth 22-7 on the horizontal plate 22-2 to move and drive the gear 21-3 to rotate, which in turn causes the rotating rod 21-2 and the connecting plate 21-4 to rotate. Under the action of the connecting rod 21-5, the protective cover 23 rotates and moves, gradually disengaging from the lower end of the inkjet valve head 12.

[0085] During this process, the drive column 26 on the protective cover 23 drives the drive component 24-2 to move, which in turn drives the horizontal plate 22-2 and the scraper 25 on it to move, cleaning the lower end of the inkjet valve head 12. The protective cover 23 collects the cleaned waste. As the protective cover 23 rotates, the drive column 26 gradually disengages from the drive component 24-2. After the protective cover 23 is fully rotated and opened, its opening faces upward, making it convenient for the operator to remove the collected waste.

[0086] Simultaneously, during this process, the movement of the horizontal plate 22-2, under the action of the second guide hole 22-6, causes the third roller sleeve 27-7 to move within it, moving the moving rod 27-6 and the piston 27-4 upwards, thereby restoring the negative pressure in the vacuum bottle 13 to normal, and thus bringing it into dynamic balance of the negative pressure system. Conversely, when the spraying mechanism 1 moves upwards after the spraying is completed, the corresponding structure is reset, causing the protective cover 23 to reset and cover the lower end of the inkjet valve head 12 for protection. At the same time, the scraper 25 moves to clean the inkjet valve head 12 after the spraying is completed, and under the reset action of the adjusting component 27, the negative pressure in the vacuum bottle 13 is slightly increased, so that even if the inkjet valve head 12 is not closed during the upward movement after the spraying is completed, there will be no flux dripping, preventing waste.

[0087] In summary, the protective mechanism 2 prevents flux residue from remaining on the inkjet valve after spraying. Compared with existing technologies, it reduces the formation of solid deposits, decreases nozzle clogging, and protects the lower end of the inkjet valve after use. Even if the inkjet valve is left open, flux droplets are less likely to condense at the lower end. Compared with existing technologies, it reduces the formation of sticky residues due to prolonged contact with air oxidation, thus preventing clogging and ensuring the uniformity and accuracy of subsequent spraying.

[0088] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An inkjet protection structure based on an inkjet device, characterized in that: include, A spraying mechanism includes a frame on which an inkjet valve head and a vacuum bottle are fixedly connected; as well as, A protective mechanism, installed on the spraying mechanism, includes a rotating assembly fixedly connected to the surface of the frame, a drive assembly mounted on the surface of the frame and cooperating with the rotating assembly, a protective cover mounted on the rotating assembly and fitted onto the lower end of the inkjet valve head, a linkage component mounted on the lower end of the inkjet valve head, a scraper fixedly connected to the linkage component, a drive column fixedly connected to the inner wall of the protective cover and cooperating with the linkage component, and an adjustment assembly mounted on the frame. The rotating assembly includes fixed plates symmetrically fixed to the frame, rotating rods rotatably connected to the fixed plates, gears and connecting plates respectively sleeved at both ends of the rotating rods, a connecting rod rotatably connected to one end of the connecting plate, a connecting rod fixedly connected to the outer surface of the protective cover, and a movable plate rotatably connected between two adjacent connecting plates. The drive assembly includes a fixed block fixedly connected to the frame, a horizontal plate slidably connected to the fixed block, and a vertical plate with a first guide hole. One end of the horizontal plate is rotatably connected to a first roller sleeve and slidably connected to the first guide hole. The horizontal plate has a second guide hole, and teeth are fixedly connected to the surface of the horizontal plate and mesh with gears. The horizontal plate has a through hole, and a connecting block is fixedly connected to the top of the fixed plate. A second rolling sleeve is rotatably connected to the connecting block and is slidably connected in the through hole. The linkage includes a support fixedly connected to the bottom of the inkjet valve head, a drive component mounted on the support component and cooperating with the drive column, an inclined plate fixedly connected to the bottom of the drive component, the support component including a short plate fixedly connected to the bottom of the inkjet valve head, a guide rod fixedly connected to the short plate, a support plate sleeved on the surface of the guide rod, a scraper fixedly connected to the support plate, a first spring sleeved on the surface of the guide rod, and its two ends fixedly connected to the surfaces of the short plate and the support plate respectively; The adjustment assembly includes a fixing ring fixedly connected to the surface of the frame, a cylinder fixedly connected to the inner surface of the fixing ring, a connecting pipe connecting the upper end of the cylinder and the vacuum bottle, a piston slidably connected inside the cylinder, a reinforcing block fixedly connected to the surface of the frame, a moving rod slidably connected to the reinforcing block and the cylinder and fixedly connected to the bottom of the piston, and a third roller sleeve rotatably connected to the lower end of the moving rod and slidably connected to the second guide hole. The inkjet device body includes a three-axis motion mechanism, the vertical plate is fixedly connected to the Z-axis linear module of the three-axis motion mechanism, and the frame is fixedly connected to the surface of the moving part on the Z-axis linear module of the three-axis motion mechanism. The first guide hole is divided into three parts. The first and third parts are such that the first roller sleeve will not move when it moves inside, and the second part is such that the first roller sleeve can move when it moves inside. The second guide hole is divided into three parts. The first and third parts are such that the third roller sleeve will not move when it moves inside, and the second part is such that the third roller sleeve can move when it moves inside.

2. The inkjet protection structure based on an inkjet device as described in claim 1, characterized in that: The driving component includes a driving plate fixedly connected to the surface of the support plate, a T-shaped plate slidably connected inside the driving plate and fixedly connected to the upper end of the inclined plate, a second spring fixedly connected between the inner wall of the driving plate and the upper end of the T-shaped plate, a limit groove is formed on the driving plate, and a limit block is fixedly connected to the upper surface of the T-shaped plate and slidably connected within the limit groove.

3. The inkjet protection structure based on an inkjet device as described in claim 1, characterized in that: A partition is fixedly connected to the inner wall of the protective cover, and a rubber pad is fixedly connected to the top of the protective cover.

4. The inkjet protection structure based on an inkjet device as described in claim 1, characterized in that: The spraying mechanism also includes an inkjet valve control board, a secondary ink cartridge, a secondary filter, an industrial camera, a coaxial light source, and a laser height sensor, all fixedly connected to the frame. A cover is fixedly connected to the outer surface of the frame.

5. The inkjet protection structure based on an inkjet device as described in claim 1, characterized in that: The inkjet device includes a housing, with a frame fixedly connected to the inner wall of the housing. A conveying mechanism, a positioning mechanism, a precision weighing and detection mechanism, and a control system module are respectively installed on the frame.

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