A ceramic substrate base coater and its coating method

Abstract

This invention relates to the field of ceramic substrate production technology, specifically a ceramic substrate base glaze coating machine and its coating method, comprising: a screen plate with a scraper disposed within it; a drive assembly disposed on the screen plate and connected to the scraper; a lifting assembly connected to the scraper and having a trigger element, wherein the scraper triggers a lifting action when it moves relative to the screen plate to the trigger element; a deflection assembly disposed on the lifting assembly and connected to the scraper's rotating shaft, the deflection assembly cooperating with three pulleys symmetrically disposed on the screen plate; two sets of coating assemblies disposed on both sides of the scraper, the coating assemblies ensuring uniform ink distribution on the screen plate during scraper movement; and a follower assembly connected to the scraper and the coating assemblies, wherein the follower assembly drives the two sets of coating assemblies to move when the scraper deflects, and ensures that the coating assembly located in the scraper's movement direction adheres to the screen plate, thereby improving the coating effect.

Description

Technical Field

[0001] This invention relates to the field of ceramic substrate production technology, specifically to a ceramic substrate base glaze coating machine and its coating method. Background Technology

[0002] The ceramic substrate serves as the base for etching the circuitry of the thermal printhead. Utilizing the poor heat conductivity of ceramics, most of the heat from the thermal printhead's resistance can be transferred to the thermal paper, enabling efficient printing. Under a microscope, its surface is uneven. To improve the flatness of the etched circuitry and ensure uniform resistance and reliable performance, a glaze needs to be applied to the substrate surface. This glazing process employs screen printing.

[0003] In the screen printing process, ink is first sprayed onto the screen. However, during the spraying process, it is impossible to guarantee the uniformity of the ink, resulting in inconsistent ink thickness on the screen. This is mainly due to limitations in the ink spraying process and the flatness error of the screen surface. Consequently, when the squeegee acts on the ink, the amount of ink penetrating the screen is inconsistent, which can easily lead to uneven glaze marks on the ceramic substrate after glazing, affecting the subsequent use of the ceramic substrate. Summary of the Invention

[0004] The purpose of this invention is to provide a ceramic substrate base glaze coating machine and coating method thereon to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A ceramic substrate base coater includes:

[0007] A wire mesh plate, wherein a scraper is provided inside the wire mesh plate;

[0008] A drive assembly is disposed on the screen plate and connected to the scraper;

[0009] The lifting assembly is connected to the scraper and has a trigger. When the scraper moves relative to the screen plate to the trigger, the scraper triggers a lifting action.

[0010] A deflection assembly is mounted on the lifting assembly and connected to the rotating shaft of the scraper. The deflection assembly cooperates with the No. 3 pulley symmetrically arranged on the wire mesh plate and can deflect in the opposite direction when the scraper rises to its maximum height.

[0011] The coating assembly has two sets, which are respectively installed on both sides of the squeegee. The coating assembly can make the ink placed on the screen plate uniform when the squeegee moves.

[0012] The follower component connects the scraper and the coating component. When the scraper deflects, the follower component can drive the two sets of coating components to move and make the coating component located in the direction of the scraper movement fit with the screen plate.

[0013] As a further embodiment of the present invention: the lifting assembly includes a vertically arranged follower plate that is rotatably connected to the scraper, and two connecting members are symmetrically installed on the follower plate. The connecting members are slidably connected to the vertical shaft connecting the drive assembly.

[0014] An adjusting sleeve is rotatably mounted on the end of the vertical shaft away from the drive assembly, and a No. 1 spring is sleeved on the vertical shaft. One end of the No. 1 spring is connected to the connecting piece, and the other end is connected to the adjusting sleeve.

[0015] As a further embodiment of the present invention: a pulley adapted to the trigger is rotatably mounted on the connector;

[0016] The triggering element includes a lifting element connected to the wire mesh plate via a telescopic rod. The lifting element is formed by a first inclined surface, a second inclined surface, a first straight surface, and a vertical surface. The first inclined surface cooperates with the first pulley to drive the follower plate to move upward, and the second inclined surface cooperates with the first pulley to drive the lifting element to move upward.

[0017] As a further embodiment of the present invention: the deflection assembly includes a deflection rod fixedly connected to the rotating shaft of the scraper, and a second pulley is rotatably mounted on one end of the deflection rod away from its rotation center, and the deflection rod is adapted to the third pulley;

[0018] The deflection assembly also includes an energy storage structure disposed on the side of the follower plate. The lower end of the energy storage structure is connected to an abutment member. The abutment member has two stop grooves on the side facing the second pulley. A second flat surface tangent to the two stop grooves is disposed between the two stop grooves.

[0019] As a further embodiment of the present invention: the energy storage structure includes a hysteresis sleeve fixedly installed on the side of the follower plate, a telescopic shaft connected to the abutment is slidably installed inside the hysteresis sleeve, a limiting ring is provided on the telescopic shaft that slides inside the hysteresis sleeve, and a second spring is sleeved on the telescopic shaft, one end of the second spring is connected to the inner wall of the hysteresis sleeve, and the other end is connected to the limiting ring.

[0020] As a further embodiment of the present invention: the coating assembly includes brush plates disposed on both sides of the follower plate, and a connecting frame is connected to the brush plates;

[0021] The coating assembly also includes a horizontal plate disposed on the screen plate and passing through the follower plate. Two guide grooves are symmetrically opened on the horizontal plate, and the two guide grooves are connected by a serpentine groove. A No. 4 pulley rotatably mounted on the connecting frame can roll within the serpentine groove and the two guide grooves.

[0022] As a further embodiment of the present invention: the follower assembly includes two sets of parallel rods symmetrically installed on the side of the follower plate, the parallel rods including two rotating connecting rods rotatably installed on the follower plate, and the ends of the two rotating connecting rods away from the follower plate are rotatably connected to a vertical connecting rod parallel to the follower plate;

[0023] A horizontal shaft is fixed on the rotating connecting rod, and the horizontal shaft is slidably connected to the connecting frame;

[0024] The follower assembly also includes a reverse connection structure connecting the vertical connecting rod and the scraper.

[0025] As a further embodiment of the present invention: the reverse connection structure includes two follower rods symmetrically mounted on the scraper shaft and a hysteresis groove formed on the vertical connecting rod, wherein a convex shaft provided at the end of the follower rod can slide within the hysteresis groove.

[0026] A method for applying a base coat to a ceramic substrate using the aforementioned base coat coating machine includes the following steps:

[0027] Step 1: Clean and dry the screen. You can air dry it or use a fan to dry it.

[0028] Step 2: Install the screen onto the coating machine and place the ceramic substrate to be coated between the coating machine base and the screen.

[0029] Step 3: Start the coating machine. The ink delivery device on the coating machine extends from the side of the screen and sprays ink onto the screen.

[0030] Step 4: Drive the component to move the squeegee along the length of the screen and apply the ink. At the same time, the squeegee component moves to spread the ink evenly in the direction of the squeegee's movement.

[0031] Step 5: After coating is completed, the scraper continues to move toward the end of its stroke. At this time, the lifting component lifts the scraper, while the deflection component drives the scraper to deflect in the opposite direction. Under the action of the follower component, the position of the scraping component is changed.

[0032] Step 6: Remove the coated ceramic substrate and place another ceramic substrate to be coated between the coating machine base and the screen plate. Then repeat steps 3 and 4 above.

[0033] Compared with the prior art, the beneficial effects of the present invention are:

[0034] The system links the squeegee deflection angle with the height of the two brush plates. This coordination ensures that when the squeegee moves, the brush plates at the front of its movement can evenly coat the ink on the screen, resulting in a more uniform ink distribution on the screen. This improves the consistency of ink penetration and guarantees a better coating effect. Furthermore, the height switching of the two brush plates allows the two connected No. 3 pulleys to alternately engage with the serpentine groove, reducing the load on the drive unit during a single coating cycle. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of one embodiment of a ceramic substrate base glaze coating machine.

[0036] Figure 2 This is a schematic diagram of the structure from another angle in one embodiment of a ceramic substrate base glaze coating machine.

[0037] Figure 3 This is a schematic diagram of the drive assembly and lifting assembly in one embodiment of a ceramic substrate base glaze coating machine.

[0038] Figure 4 This is a schematic diagram of the deflection assembly, the scraping assembly, and the follow-up assembly in one embodiment of a ceramic substrate base glaze coating machine.

[0039] Figure 5 This is a schematic diagram of the deflection assembly, the scraping assembly, and the follow-up assembly from another angle in one embodiment of a ceramic substrate base glaze coating machine.

[0040] Figure 6 This is a planar schematic diagram of the deflection component in one embodiment of a ceramic substrate base glaze coating machine.

[0041] Figure 7 This is a planar schematic diagram of the follower component in one embodiment of a ceramic substrate base glaze coating machine.

[0042] Figure 8 This is a partial exploded view of the deflection component and the follower component in one embodiment of a ceramic substrate base glaze coating machine.

[0043] In the diagram: 1. Wire mesh plate; 2. Drive device; 3. Lead screw; 4. Threaded sleeve; 5. Vertical shaft; 6. Connecting piece; 7. Adjusting sleeve; 8. Spring No. 1; 9. Pulley No. 1; 10. Lifting component; 1001. Inclined surface No. 1; 1002. Inclined surface No. 2; 1003. Straight surface No. 1; 11. Telescopic rod; 12. Follower plate; 13. Scraper; 14. Deflecting rod; 15. Pulley No. 2; 16. Abutment component; 1601. Stop groove ; 1602, No. 2 flat surface; 17, telescopic shaft; 1701, limiting ring; 18, No. 2 spring; 19, hysteresis sleeve; 20, connecting plate; 21, No. 3 pulley; 22, follower rod; 23, convex shaft; 24, vertical connecting rod; 2401, hysteresis groove; 25, rotating connecting rod; 26, horizontal shaft; 27, connecting frame; 28, brush plate; 29, No. 4 pulley; 30, horizontal plate; 3001, serpentine groove; 3002, guide groove. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0046] Please see Figures 1-8 In this embodiment of the invention, a ceramic substrate base glaze coating machine includes: a screen plate 1, a drive assembly, a lifting assembly, a deflection assembly, a scraping assembly, and a follow-up assembly. The deflection angle switching of the scraper 13 and the height switching of the two brush plates 28 are linked. The two work together so that when the scraper 13 moves, the brush plate 28 at the front of its movement direction can coat the ink on the screen plate 1 evenly, so that when the scraper 13 acts on the ink, the ink is more evenly distributed on the screen plate 1, thereby improving the consistency of ink penetration into the screen plate 1 and ensuring the coating effect. Moreover, the height switching of the two brush plates 28 allows the two No. 3 pulleys 21 connected to them to alternately cooperate with the serpentine groove 3001, so that the load on the drive device 2 is lower during a single coating process.

[0047] Specifically, a scraper 13 is provided inside the wire mesh plate 1;

[0048] The drive assembly is disposed on the wire mesh plate 1 and connected to the scraper 13. The drive assembly includes two lead screws 3 rotatably mounted on the wire mesh plate 1. The two lead screws 3 are connected by a belt, and one of the lead screws 3 is connected to the drive device 2 disposed on the wire mesh plate 1. A threaded sleeve 4 is provided on the lead screw 3 and is threadedly connected to it.

[0049] The lifting assembly is connected to the scraper 13 and forms a trigger. When the scraper 13 moves relative to the wire mesh plate 1 to the trigger, the scraper 13 triggers the lifting action. The lifting assembly includes a vertically arranged follower plate 12 that is rotatably connected to the scraper 13. Two connectors 6 are symmetrically installed on the follower plate 12. The connectors 6 are slidably connected to the vertical shaft 5 that connects to the threaded sleeve 4.

[0050] An adjusting sleeve 7 is rotatably mounted on one end of the vertical shaft 5 away from the driving assembly, and a first spring 8 is sleeved on the vertical shaft 5. One end of the first spring 8 is connected to the connecting piece 6, and the other end is connected to the adjusting sleeve 7.

[0051] A pulley 9 adapted to the trigger is rotatably mounted on the connector 6;

[0052] The triggering element includes a lifting element 10 connected to the wire mesh plate 1 via a telescopic rod 11. The lifting element 10 is formed by a first inclined surface 1001, a second inclined surface 1002, a first straight surface 1003, and a vertical surface. The first inclined surface 1001 cooperates with the first pulley 9 to drive the follower plate 12 to move upward, and the second inclined surface 1002 cooperates with the first pulley 9 to drive the lifting element 10 to move upward.

[0053] In use, the control drive device 2 operates, driving the lead screw 3 to rotate. Under the drive of the belt, the two lead screws 3 rotate synchronously. At this time, the threaded sleeve 4, which is set on the lead screw 3 and threadedly connected to it, will move along the length direction of the lead screw 3, thereby pulling the two ends of the follower plate 12. This allows the follower plate 12 to drive the scraper 13 to move forward stably perpendicular to the length direction of the screen plate 1, preventing the scraper 13 from tilting due to asynchronous movement on both sides. This avoids the scraper 13 driving the ink to one end during the ink coating process, ensuring that the coating effect is consistent at both ends of the scraper 13 after coating, thus improving the coating effect.

[0054] In the initial state, spring 8 is compressed, and it acts on connector 6 to make scraper 13 fit against the bottom of wire mesh plate 1. Pulley 9 is at its lowest point of travel. When threaded sleeve 4 moves, it drives scraper 13 through vertical shaft 5, connector 6, and follower plate 12, causing lateral displacement of pulley 9. In the initial state, lifting member 10 is also at its lowest point of travel under its own weight, and the end of inclined surface 1002 facing pulley 9 is higher. The angle is greater than that of the pivot of the first pulley 9, which causes the first pulley 9 to abut against the second inclined surface 1002 when it moves laterally. The second inclined surface 1002 then drives the lifting member 10 to move upwards. After the first pulley 9 separates from the lifting member 10, the lifting member 10 will return to its original position. During this process, the scraper 13 remains in contact with the bottom of the screen plate 1. As the scraper 13 and the first pulley 9 continue to move, the first pulley 9 will move to the lifting member 10 at the other end of the screen plate 1. At this time, the first inclined surface 1002... The end of 001 facing the first pulley 9 is lower than the height of the shaft of the first pulley 9. When the first pulley 9 abuts against the first inclined surface 1001, it will move upward under the guidance of the first inclined surface 1001, thereby driving the connecting piece 6, the follower plate 12, and the scraper 13 away from the screen plate 1. At this time, the scraper 13 will separate from the remaining ink after coating. During this process, the first spring 8 will be further compressed until the first pulley 9 moves to the first flat surface 1003. When the first pulley 9 moves to the first flat surface 1003, the first spring 8 will be further compressed. After the end of the flat surface 1003, the spring 8 will release its elastic potential energy and drive the pulley 9, connector 6, follower plate 12 and squeegee 13 to move toward the screen plate 1 until the squeegee 13 and the screen plate 1 are in contact again, thus resetting the squeegee 13. Then, when coating another ceramic substrate, the drive device 2 will work in reverse, and the squeegee 13 will also move in reverse, and can scrape the remaining ink after the last coating toward the other side of the screen plate 1, improving the ink utilization rate and reducing waste.

[0055] Furthermore, the pressure exerted by the scraper 13 on the wire mesh plate 1 is determined by the first spring 8. When it is necessary to adjust the pressure exerted by the scraper 13 on the wire mesh plate 1, the adjusting sleeve 7 can be rotated to move along the length direction of the vertical shaft 5, thereby causing the upper end of the first spring 8 to move upward or downward, thus changing the amount of compression of the first spring 8, so as to adjust the pressure exerted by the scraper 13 on the wire mesh plate 1. Specifically, the upper end of the vertical shaft 5 is provided with an internal thread, and the adjusting sleeve 7 is provided with an external thread that matches the internal thread.

[0056] With the above configuration, when the drive device 2 is working, the cooperation between the two lead screws 3 and the threaded sleeve 4 can drive the two ends of the follower plate 12 to move synchronously, so that the doctor blade 13 can act evenly on the ink, avoiding the doctor blade 13 tilting and causing the ink to be driven to one side of the doctor blade. This ensures that the coating effect at both ends of the doctor blade 13 is consistent after coating, thus improving the coating effect. Furthermore, with the cooperation of the first pulley 9 and the lifting member 10, the doctor blade 13 can perform a lifting action after moving to the end of its stroke, so that the doctor blade 13 is separated from the remaining ink after coating. During the next coating, this part of the ink is scraped and sent to the other end of the screen plate 1, thereby improving the ink utilization rate and reducing waste.

[0057] Please see Figures 4-8 The deflection component is disposed on the follower plate 12 and connected to the rotating shaft of the scraper 13. The deflection component cooperates with the No. 3 pulley 21 symmetrically disposed on the wire mesh plate 1, and can deflect in the opposite direction when the scraper 13 rises to the maximum height. The No. 3 pulley 21 is rotatably connected to the connecting plate 20 disposed on the wire mesh plate 1.

[0058] The deflection assembly includes a deflection rod 14 fixedly connected to the rotating shaft of the scraper 13. A second pulley 15 is rotatably mounted on one end of the deflection rod 14 away from its rotation center, and the deflection rod 14 is adapted to the third pulley 21.

[0059] The deflection assembly also includes an energy storage structure disposed on the side of the follower plate 12. The lower end of the energy storage structure is connected to an abutment member 16. The abutment member 16 has two stop grooves 1601 formed on the side facing the second pulley 15. A second flat surface 1602 tangent to the two stop grooves 1601 is disposed between them. The energy storage structure includes a hysteresis sleeve 19 fixedly installed on the side of the follower plate 12. A telescopic shaft 17 connected to the abutment member 16 is slidably installed inside the hysteresis sleeve 19. A limiting ring 1701 is disposed on the telescopic shaft 17 and slides inside the hysteresis sleeve 19. A second spring 18 is sleeved on the telescopic shaft 17. One end of the second spring 18 is connected to the inner wall of the hysteresis sleeve 19, and the other end is connected to the limiting ring 1701.

[0060] In the initial state, the second spring 18 is compressed. At this time, the telescopic shaft 17 and the abutment 16 have a downward tendency to move, so that the second pulley 15 is locked in one of the stop grooves 1601. At this time, the deflection rod 14 and the scraper 13 are both in an inclined state. Specifically, the scraper 13 is biased from its rotation center to its end to the side opposite to the direction of movement of the scraper 13, so that when the scraper 13 acts on the ink, it can generate an inclined downward squeezing force on the ink, thereby enabling the ink to better penetrate the screen plate 1 and be coated onto the ceramic substrate.

[0061] When pulley 9 moves to the first flat surface 1003, the scraper 13 is separated from the screen plate 1. At this time, as pulley 9 moves along the first flat surface 1003, the deflection rod 14 will abut against pulley 21 on one side. Under the stop of pulley 21, the deflection rod 14 will deflect. At this time, pulley 15 will push the abutment 16 upward, and the second spring 18 will be further compressed. When the deflection rod 14 rotates to the vertical position, pulley 15 will continue to stop the deflection rod 14, so that the deflection rod 14 can move from the middle position of the second flat surface 1602 to another stop groove 1601, so as to realize the opposite deflection of the deflection rod 14 and the scraper 13. Then pulley 9 separates from the first flat surface 1003, and the scraper 13 will once again adhere to the bottom of the screen plate 1.

[0062] With the above settings, when the squeegee 13 reciprocates to coat the ceramic substrate, after the squeegee 13 moves to the end of its stroke, the deflection rod 14 and the squeegee 13 can switch angles. This allows the squeegee 13 to deflect from its rotation center to the side opposite to its direction of movement when it moves next. This ensures that a constant pressure is applied to the ink when the squeegee 13 scrapes and feeds the ink, ensuring that the ink penetrates the screen stencil 1 at a predetermined speed and is coated onto the ceramic substrate, thereby improving the coating effect of ceramic substrates in the same batch.

[0063] Please see Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 7 , Figure 8 The coating assembly is provided in two sets and is respectively installed on both sides of the scraper 13. The coating assembly can make the ink placed on the screen plate 1 uniform when the scraper 13 moves. The coating assembly includes brush plates 28 disposed on both sides of the follower plate 12, and a connecting frame 27 is connected to the brush plates 28.

[0064] The coating assembly also includes a horizontal plate 30 disposed on the screen plate 1 and passing through the follower plate 12. Two guide grooves 3002 are symmetrically provided on the horizontal plate 30. The two guide grooves 3002 are connected by a serpentine groove 3001. A No. 4 pulley 29 rotatably mounted on the connecting frame 27 can roll within the serpentine groove 3001 and the two guide grooves 3002.

[0065] The follower assembly connects the scraper 13 and the coating assembly. When the scraper 13 deflects, the follower assembly can drive the two sets of coating assemblies to move and make the coating assembly located in the direction of movement of the scraper 13 fit with the screen plate 1. The follower assembly includes two sets of parallel rods symmetrically installed on the side of the follower plate 12. The parallel rods include two rotating connecting rods 25 rotatably installed on the follower plate 12. The ends of the two rotating connecting rods 25 away from the follower plate 12 are rotatably connected to a vertical connecting rod 24 parallel to the follower plate 12. When the vertical connecting rod 24 moves, the two rotating connecting rods 25 can always remain parallel.

[0066] A horizontal shaft 26 is fixed on the rotating connecting rod 25, and the horizontal shaft 26 is slidably connected to the connecting frame 27;

[0067] The follower assembly also includes a reverse connection structure connecting the vertical connecting rod 24 and the scraper 13. The reverse connection structure includes two follower rods 22 symmetrically mounted on the rotating shaft of the scraper 13 and a hysteresis groove 2401 formed on the vertical connecting rod 24. The convex shaft 23 provided at the end of the follower rod 22 can slide in the hysteresis groove 2401.

[0068] The two follower rods 22 are perpendicular to the deflection rod 14. This means that when the deflection rod 14 tilts and causes the scraper 13 to tilt, the follower rods 22 will also tilt. The convex shaft 23 at the end of the follower rod 22 slides in the hysteresis groove 2401, resulting in a height difference between the vertical connecting rods 24 on both sides of the follower plate 12. The angle between the two rotating connecting rods 25 connected to the lower vertical connecting rod 24 and the follower plate 12 is smaller. At this time, the horizontal axis 26 connecting the rotating connecting rods 25 is lower, and the height of the connecting frame 27 slidably connected to the horizontal axis 26 is also lower. At this time, the brush plate 28 connected to the connecting frame 27 is at a height that is perpendicular to the vertical connecting rod 14. With the bottom of the screen plate 1 in a close-fitting state, the fourth pulley 29 connected to the connecting frame 27 will also be in the guide groove 3002. At this time, when the follower plate 12 drives the doctor blade 13 to move, the fourth pulley 29 will also enter the serpentine groove 3001 under the guidance of the guide groove 3002. Under the guidance of the serpentine groove 3001, the connecting frame 27 and the brush plate 28 can reciprocate along the length direction of the horizontal axis 26 when they follow the follower plate 12, so as to evenly coat the ink in front of the doctor blade 13. This makes the ink distribution on the screen plate 1 more uniform when the doctor blade 13 acts on the ink, and makes the ink penetration more consistent, thereby improving the coating effect.

[0069] Specifically, the angle between the two rotating connecting rods 25 connected to the taller vertical connecting rod 24 and the follower plate 12 is larger. At this time, the horizontal axis 26 connecting the rotating connecting rods 25 is higher, so that the connecting frame 27 and the brush plate 28 connected to the horizontal axis 26 are in a higher position and are separated from the bottom of the screen plate 1. At the same time, the fourth pulley 29 connected to the connecting frame 27 is located on the upper part of the horizontal plate 30, so that when the scraper 13 is displaced, the brush plate 28 will neither stick to the screen plate 1 nor move back and forth along the length direction of the horizontal axis 26 under the guidance of the serpentine groove 3001. This avoids useless friction loss caused by friction between the brush plate 28 and the screen plate 1 at the rear of the scraper 13 movement direction, and also reduces the load on the drive device 2 during a single coating.

[0070] When the scraper 13 reaches the end of its stroke and deflects, the follower rod 22 will also deflect along with the rotating shaft of the scraper 13. At this time, the cam 23, through its cooperation with the hysteresis groove 2401, can achieve the height switching of the two vertical connecting rods 24. This allows the brush plate 28, which was originally attached to the screen plate 1, to move upward and separate from the screen plate 1, and the brush plate 28, which was originally separated from the screen plate 1, to move downward and attach to the screen plate 1. This changes the position of the brush plate 28, which is located at the front of the direction of movement, when the scraper 13 moves in the opposite direction, so that the ink on the screen plate 1 can be evenly coated.

[0071] Through the above settings, the deflection angle switching of the squeegee 13 and the height switching of the two brush plates 28 are linked. The two work together to ensure that when the squeegee 13 moves, the brush plate 28 at the front of its movement direction can evenly coat the ink on the screen plate 1. This makes the ink distribution on the screen plate 1 more uniform when the squeegee 13 acts on the ink, thereby improving the consistency of ink penetration into the screen plate 1 and ensuring the coating effect. Furthermore, the height switching of the two brush plates 28 allows the two No. 3 pulleys 21 connected to them to alternately engage with the serpentine groove 3001, resulting in a lower load on the drive device 2 during a single coating process.

[0072] A method for applying a base coat to a ceramic substrate using the aforementioned base coat coating machine includes the following steps:

[0073] Step 1: Clean and dry the screen plate 1. The drying method can be natural air drying or blow-drying with a fan.

[0074] Step 2: Install the screen plate 1 onto the coating machine, and place the ceramic substrate to be coated between the coating machine base and the screen plate 1;

[0075] Step 3: Start the coating machine. The ink delivery device on the coating machine extends from the side of the screen plate 1 and sprays ink onto the screen plate 1.

[0076] Step 4: Drive the component to move the squeegee 13 along the length of the screen plate 1 and scrape the ink. At the same time, the scraping component moves to spread the ink evenly in the direction of the squeegee 13.

[0077] Step 5: After coating is completed, the scraper 13 continues to move toward the end of its stroke. At this time, the lifting component lifts the scraper 13, while the deflection component drives the scraper 13 to deflect in the opposite direction. Under the action of the follower component, the position of the scraping component is changed.

[0078] Step 6: Remove the coated ceramic substrate and place another ceramic substrate to be coated between the coating machine base and the screen plate 1. Then repeat steps 3 and 4 above.

[0079] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0080] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A ceramic substrate primer coating machine, comprising: A wire mesh plate (1) is provided with a scraper (13) inside the wire mesh plate (1); A drive assembly is disposed on the screen plate (1) and connected to the scraper (13). Its characteristic is that it further includes: The lifting assembly is connected to the scraper (13) and has a trigger. When the scraper (13) moves relative to the wire mesh plate (1) to the trigger, the scraper (13) triggers the lifting action. A deflection assembly is provided on the lifting assembly and connected to the rotating shaft of the scraper (13). The deflection assembly cooperates with the No. 3 pulley (21) symmetrically arranged on the wire mesh plate (1) and can deflect in the opposite direction when the scraper (13) rises to its maximum height. The coating assembly is provided in two sets and is respectively installed on both sides of the scraper (13). The coating assembly can make the ink placed on the screen plate (1) uniform when the scraper (13) moves. The follower component connects the scraper (13) and the coating component. When the scraper (13) deflects, the follower component can drive the two sets of coating components to move and make the coating component located in the direction of movement of the scraper (13) fit with the screen plate (1). The lifting assembly includes a vertically arranged follower plate (12) that is rotatably connected to the scraper (13). Two connectors (6) are symmetrically installed on the follower plate (12). The connectors (6) are slidably connected to the vertical shaft (5) that connects to the drive assembly. An adjusting sleeve (7) is rotatably mounted on one end of the vertical shaft (5) away from the driving assembly, and a No. 1 spring (8) is sleeved on the vertical shaft (5). One end of the No. 1 spring (8) is connected to the connecting piece (6), and the other end is connected to the adjusting sleeve (7). The scraping assembly includes brush plates (28) disposed on both sides of the follower plate (12), and a connecting frame (27) is connected to the brush plates (28). The follower assembly includes two sets of parallel rods symmetrically installed on the side of the follower plate (12). The parallel rods include two rotating connecting rods (25) rotatably installed on the follower plate (12). The ends of the two rotating connecting rods (25) away from the follower plate (12) are rotatably connected to a vertical connecting rod (24) parallel to the follower plate (12). A horizontal shaft (26) is fixed on the rotating connecting rod (25), and the horizontal shaft (26) is slidably connected to the connecting frame (27); The follower assembly also includes a reverse connection structure connecting the vertical connecting rod (24) and the scraper (13); The reverse connection structure includes two follower rods (22) symmetrically mounted on the rotating shaft of the scraper (13) and a hysteresis groove (2401) formed on the vertical connecting rod (24). The convex shaft (23) provided at the end of the follower rod (22) can slide in the hysteresis groove (2401).

2. The ceramic substrate base glaze coating machine according to claim 1, characterized in that, A pulley (9) adapted to the trigger is rotatably mounted on the connector (6); The triggering element includes a lifting element (10) connected to the wire mesh plate (1) via a telescopic rod (11). The lifting element (10) is formed by a first inclined surface (1001), a second inclined surface (1002), a first straight surface (1003), and a vertical surface. The first inclined surface (1001) cooperates with the first pulley (9) to drive the follower plate (12) to move upward. The second inclined surface (1002) cooperates with the first pulley (9) to drive the lifting element (10) to move upward.

3. The ceramic substrate base glaze coating machine according to claim 1, characterized in that, The deflection assembly includes a deflection rod (14) fixedly connected to the rotating shaft of the scraper (13). A second pulley (15) is rotatably mounted on one end of the deflection rod (14) away from its rotation center, and the deflection rod (14) is adapted to the third pulley (21). The deflection assembly also includes an energy storage structure disposed on the side of the follower plate (12). The lower end of the energy storage structure is connected to an abutment (16). The abutment (16) has two stop grooves (1601) on the side facing the second pulley (15). A second flat surface (1602) tangent to the two stop grooves (1601) is disposed between the two stop grooves (1601).

4. A ceramic substrate base glaze coating machine according to claim 3, characterized in that, The energy storage structure includes a hysteresis sleeve (19) fixedly installed on the side of the follower plate (12). A telescopic shaft (17) connected to the abutment (16) is slidably installed inside the hysteresis sleeve (19). A limiting ring (1701) is provided on the telescopic shaft (17) and slides inside the hysteresis sleeve (19). A second spring (18) is sleeved on the telescopic shaft (17). One end of the second spring (18) is connected to the inner wall of the hysteresis sleeve (19), and the other end is connected to the limiting ring (1701).

5. A ceramic substrate base glaze coating machine according to claim 1, characterized in that, The coating assembly also includes a horizontal plate (30) disposed on the screen plate (1) and passing through the follower plate (12). Two guide grooves (3002) are symmetrically opened on the horizontal plate (30). The two guide grooves (3002) are connected by a serpentine groove (3001). A No. 4 pulley (29) rotatably mounted on the connecting frame (27) can roll in the serpentine groove (3001) and the two guide grooves (3002).

6. A method for applying a base coat to a ceramic substrate using a ceramic substrate base coater as described in claim 1, characterized in that, Includes the following steps: Step 1: Clean and dry the wire mesh (1) by air drying or blow-drying with a fan. Step 2: Install the screen plate (1) onto the coating machine and place the ceramic substrate to be coated between the base of the coating machine and the screen plate (1); Step 3: Start the coating machine. The ink delivery device on the coating machine extends into the side of the screen plate (1) and sprays the ink onto the screen plate (1). Step 4: Drive the component to move the scraper (13) along the length of the screen (1) and scrape the ink. At the same time, the scraping component moves to spread the ink evenly in the direction of the scraper (13). Step 5: After coating is completed, the scraper (13) continues to move toward the end of the stroke. At this time, the lifting component lifts the scraper (13), and the deflection component drives the scraper (13) to deflect in the opposite direction. Under the action of the follower component, the position of the scraping component is changed. Step 6: Remove the coated ceramic substrate and place another ceramic substrate to be coated between the base of the coating machine and the screen plate (1), and then repeat steps 3 to 4 above.

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