CN116278341A - A screen printing device and printing method - Google Patents

Abstract

The present application relates to a screen printing device and a printing method, and relates to the technical field of screen printing. For the screen printing plate, the lifting frame is provided with a mounting table, and the sliding of the mounting table is provided with a sliding block, and the mounting table is provided with a driving part for driving the sliding block to move. The shaft is set towards the screen printing plate, one of the first cylinders is fixed with the first scraper for silk screen printing, and the other first cylinder is equipped with the second scraper for cleaning the ink on the screen surface, the first scraper There are several ink nozzles on the side, the frame is equipped with an ink feeding box, and the ink nozzle is connected to the ink feeding box. The frame of the ink feeding port is hollow. This application has the effect of improving the quality of silk screen printing.

Description

A screen printing device and printing method

technical field

The present application relates to the technical field of screen printing, in particular to a screen printing device and a printing method.

Background technique

Screen printing is one of the common printing technologies nowadays. During printing, the ink is transferred to the substrate through the mesh of the graphic part through the extrusion of the squeegee, thus forming the same pattern as the original.

In order to meet the requirements of actual use, the printing surface of many substrates is a curved surface, so the screen printing screen will also be made into a corresponding curved surface, so as to better print the substrate. When printing, the ink will pass through the screen surface, and some ink will remain on the screen surface, and because the screen surface is a curved surface, the ink will flow to the lowest point of the screen surface due to gravity, resulting in no ink on the screen surface. Uniformity, which in turn leads to uneven ink of the silk screen printing pattern, which affects the quality of silk screen printing.

Contents of the invention

In order to improve the quality of silk screen printing, the present application provides a screen printing device and a printing method.

A screen printing device provided by the application adopts the following technical scheme:

A screen printing device, comprising a frame, the frame is provided with a lifting frame, the frame is provided with a lifting assembly that drives the lifting frame to lift, the lifting frame is provided with a screen printing plate, and the lifting frame A mounting table is provided, and the mounting table is slidably provided with a sliding block, and the mounting table is provided with a driver for driving the sliding block to move, and the sliding block is fixed with two first cylinders, and the first cylinder The output shaft is set towards the screen printing plate, one of the first cylinders is fixed with a first scraper for silk screen printing, and the other first cylinder is equipped with a second scraper for cleaning ink on the screen surface , the side of the first scraper is provided with a number of ink nozzles, the frame is provided with an ink feeding box, the ink nozzles are connected with the ink feeding box, and the frame side wall of the screen printing plate is located in the valley of the curved surface An ink discharge port is opened at the position, and the frame of the screen printing plate with the ink discharge port is hollow, and the bottom wall of the frame is connected with a number of ink discharge pipes.

By adopting the above technical solution, the lifting component drives the lifting frame to lift. During silk screen printing, the lifting frame descends so that the screen printing plate contacts the substrate, and then the first cylinder drives the first scraper to descend and contact the screen surface, and the second The cylinder pushes the sliding block to slide, thereby driving the first scraper to move. At the same time, the ink nozzle sprays the ink onto the surface of the screen. When the first scraper passes by, the ink is squeezed and printed onto the surface of the substrate, and the ink is sprayed through the nozzle to effectively control The output of ink can reduce the residual amount of ink on the surface of the screen; after the screen printing is completed, the first scraper goes up, the second scraper goes down, and the second scraper moves in the opposite direction along the running path of the first scraper, and the residue on the screen will be removed. The ink on the screen surface is scraped back, and the scraped ink flows into the ink discharge port, reducing the amount of ink remaining on the screen surface and improving the printing quality.

Optionally, the frame is provided with a first chute, and the lifting assembly includes first sliders fixed at both ends of the lifting frame, a screw arranged in the first chute, and fixed to the frame for A first drive motor for driving the screw to rotate, the screw is threaded through the first slider, and the first slider is slidably connected in the first chute.

By adopting the above technical solution, the first driving motor drives the screw to rotate, so that the first slider moves along the opening direction of the first chute, thereby driving the lifting frame to perform stable lifting.

Optionally, one end of one of the screw rods is coaxially fixed with a first gear, the output shaft of the first drive motor is coaxially fixed with a second gear, the first gear meshes with the second gear, and the two One end of the screw rod is coaxially fixed with a first bevel gear, the frame is rotatably connected with a transmission rod, and the two ends of the transmission rod are respectively coaxially fixed with a second bevel gear, and the first bevel gear and the corresponding The second bevel gear meshes.

By adopting the above technical solution, the first drive motor rotates, the screw is driven to rotate through the conduction of the first gear and the second gear, and the other screw is driven to rotate through the conduction of the first bevel gear, the second bevel gear and the transmission rod, so that the two The screws on the side rotate synchronously, so that the lifting frame can be lifted and lowered more stably.

Optionally, the driving member is a second cylinder, the output shaft of the second cylinder is fixedly connected to the sliding block, the mounting table is provided with a sliding groove, and the sliding block is slidably connected to the sliding groove The side wall of the sliding block is fixed with a second sliding block, the side wall of the sliding groove is provided with a second sliding slot, and the second sliding block is slidingly connected to the second sliding slot.

By adopting the above technical solution, the second sliding block is slidably connected to the second chute, so that the sliding block can slide stably in the sliding groove, and the expansion and contraction of the second cylinder drives the sliding block to slide back and forth.

Optionally, the frame is provided with a conveyor belt for conveying the substrate, the frame is provided with a second driving motor for driving the transmission belt to rotate, and the frame is provided with a correcting assembly for correcting the substrate.

By adopting the above technical solution, the conveyor belt facilitates the transportation of the printed matter and saves human resources, and the aligning component aligns the printed matter so that the position of the printed matter is adjusted and the printing quality is improved.

Optionally, the conveyor belt is divided into two, and there is a space between the two conveyor belts. The positive position block on the side and the fourth cylinder that drives the positive position block to move, the frame is located on one side of the conveyor belt and is provided with an inductor, and the sensor is electrically connected to the third cylinder and the fourth cylinder.

By adopting the above technical scheme, when the substrate is transported to the designated station, the sensor detects the substrate and sends an electrical signal to the third cylinder and the fourth cylinder, the third cylinder drives the block to rise to block the substrate, and the fourth cylinder drives The alignment block aligns the substrate and clamps the substrate.

Optionally, several slopes are arranged inside the hollow frame of the screen printing plate at the junction of the ink feeding pipe, and several slopes form a funnel shape.

By adopting the above technical solution, the ink scraped back flows into the frame, and the slope facilitates the ink to flow into the ink discharge pipe.

Optionally, the other end of the ink feeding pipe is connected with an ink collection box.

By adopting the above technical solution, the ink collection box facilitates the collection and storage of ink, and facilitates subsequent centralized processing.

A printing method, comprising the steps of:

S1. The conveyor belt transports the substrate to the printing station, and corrects the substrate through the alignment component;

S2. The lifting frame is driven down by the lifting component, so that the screen printing plate is in contact with the substrate, the first cylinder drives the first scraper down to contact the screen, and the second cylinder pushes the sliding table to move so that the first scraper moves along the wire. The surface of the screen moves, and the ink nozzle sprays ink at the same time, so that the ink is squeezed by the first scraper and printed on the surface of the substrate;

S3, the silk screen is completed, the lifting component lifts the lifting frame, the first cylinder drives the first scraper to rise, and the other first cylinder drives the second scraper to descend, and touches the surface of the screen, and then follows the movement of the first scraper The path moves in reverse, and the ink remaining on the screen surface is scraped to the side with the ink discharge port, and the excess ink flows out through the ink discharge port, and flows into the ink collection box through the ink discharge tube;

S4. The conveyor belt will complete the silk screen printing substrate transportation and unloading.

By adopting the above method, the residual amount of ink on the surface of the screen is reduced, the influence on the subsequent screen printing process is reduced, and the quality of the screen printing is improved.

In summary, the present application includes at least one of the following beneficial technical effects:

1. The first scraper moves, and the ink nozzle sprays the ink onto the surface of the screen at the same time. When the first scraper passes by, the ink is squeezed and printed onto the surface of the substrate, and the ink is sprayed through the nozzle to effectively control the output of the ink and reduce the ink on the screen. The residual amount on the surface of the screen, thereby reducing the impact on subsequent printing;

2. The second scraper moves in reverse along the running path of the first scraper to scrape back the ink remaining on the screen surface, and the scraped ink flows into the ink discharge port, reducing the amount of ink remaining on the screen surface and improving print quality;

3. The alignment component aligns the substrate to adjust the position of the substrate and improve the printing quality.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application.

Fig. 2 is a schematic diagram of the structure of the screen printing plate in the embodiment of the present application.

Fig. 3 is a schematic structural diagram of the lifting assembly in the embodiment of the present application.

Fig. 4 is a schematic structural diagram of the installation platform in the embodiment of the present application.

Fig. 5 is a schematic structural diagram of the alignment assembly in the embodiment of the present application.

Explanation of reference signs:

1. Rack; 2. Lifting frame; 3. Lifting assembly; 31. The first slider; 32. Screw; 33. The first drive motor; 4. Mounting arm; 5. Screen printing plate; 6. Mounting table; 7. Sliding block; 8. Second cylinder; 9. First cylinder; 10. First scraper; 11. Second scraper; 12. Ink nozzle; 13. Ink feeding box; 14. Ink discharging port ; 15, ink feeding tube; 16, inclined plane; 17, the first chute; 18, the first gear; 19, the second gear; 20, the first bevel gear; 21, transmission rod; 22, the second bevel gear; 23. Sliding groove; 24. Second slider; 25. Second chute; 26. Conveyor belt; 27. Second drive motor; 28. Positive component; 281. Block; 282. The third cylinder; 283. Positive block; 284, the fourth cylinder; 29, sensor; 30, ink collection box.

Detailed ways

The present application will be described in further detail below in conjunction with accompanying drawings 1-5.

The embodiment of the present application discloses a screen printing device. Referring to FIG. 1, it includes a frame 1. The frame 1 is provided with a lifting frame 2. The frame 1 is provided with a lifting assembly 3 that drives the lifting frame 2 to lift. The lifting frame 2 passes through the A mounting arm 4 is fixed by screws, and a screen printing plate 5 is fixed by screws at one end of the mounting arm 4 away from the lifting frame 2 . The lower surface of the lifting frame 2 is welded with a mounting platform 6, and the mounting platform 6 is slidably connected with a sliding block 7. One end of the mounting platform 6 is provided with a driver, and the driver is a second cylinder 8 fixed to the mounting platform 6 by screws. The output shaft of the second cylinder 8 is fixed with the sliding table by screws, and the running direction of the second cylinder 8 is parallel to the width direction of the screen printing plate 5 . Both sides of the sliding block 7 are fixed with the first cylinder 9 by screws, the output shaft of the first cylinder 9 is set towards the screen printing plate 5, and the output shaft of one of the first cylinders 9 is fixed with the first cylinder 9 for silk screen printing by screws. A scraper 10, and the other first cylinder 9 is fixed with a second scraper 11 for cleaning ink on the screen surface by screws. One side of the first scraper 10 is welded with a number of ink nozzles 12, and the frame 1 is fixed with an ink feeding box 13 by screws, and the ink nozzles 12 are connected with the ink feeding box 13 through a hose. During silk screen printing, the ink spray head 12 sprays ink, and at the same time, the first scraper 10 squeezes the ink onto the substrate to complete the silk screen printing.

Referring to Fig. 2, the side wall of the side frame of the screen printing screen is provided with an ink discharge port 14, and the ink discharge port 14 is located at the trough of the curved surface. The wall is connected with several ink feeding pipes 15, and the other end of the ink feeding pipes 15 is connected with an ink collecting box 30. The screen printing plate 5 has a hollow frame and is located at the joint with the ink feeding pipe 15 to have several inclined surfaces 16, and the several inclined surfaces 16 form a funnel shape. The ink scraped back by the second scraper 11 flows into the frame through the ink discharge opening 14 , and then flows through the ink discharge pipe 15 into the ink collection box 30 .

Referring to Fig. 3, the frame 1 is provided with a first chute 17, and the lifting assembly 3 includes a first slide block 31 welded to the two ends of the lifting frame 2, a screw rod 32 connected in the first chute 17 through a bearing for rotation and The first driving motor 33 is fixed to the frame 1 by screws and is used to drive the screw 32 to rotate. The screw 32 is threaded through the first slider 31 , and the first slider 31 is slidably connected in the first chute 17 . The first drive motor 33 drives the screw rod 32 to rotate, so that the first slider 31 moves along the opening direction of the first chute 17 , thereby driving the lifting frame 2 to move up and down. One end of one of the screw rods 32 is coaxially welded with a first gear 18, and the output shaft of the first driving motor 33 is coaxially welded with a second gear 19, and the first gear 18 meshes with the second gear 19; the upper ends of the two screw rods 32 The first bevel gear 20 is welded coaxially, and the upper end of the frame 1 is connected to the transmission rod 21 through bearing rotation. The transmission rod 21 is horizontally arranged, and the two ends of the transmission rod 21 are welded with the second bevel gear 22 coaxially. A bevel gear 20 meshes with a corresponding second bevel gear 22 . The rotation of the first driving motor 33 drives one of the screw rods 32 to rotate through the conduction of the first gear 18 and the second gear 19, thereby driving the other screw rod through the conduction of the first bevel gear 20, the second bevel gear 22 and the transmission rod 21 32 rotate synchronously, thereby making lifting frame 2 carry out lifting more stably.

Referring to Fig. 4, the lower surface of the mounting table 6 is provided with a sliding groove 23, and the sliding block 7 is slidably connected to the sliding groove 23, and the side walls on both sides of the sliding block 7 are integrally formed with a second sliding block 24, which slides The side wall of the slot 23 is provided with a second sliding slot 25, and the second sliding block 24 is slidably connected to the second sliding slot 25, so that the sliding block 7 can run stably.

Referring to Fig. 5, the frame 1 is provided with a conveyor belt 26 for conveying substrates, the conveyor belt 26 is divided into two, there is a space between the two conveyor belts 26, and the frame 1 is provided with a second driving motor 27 for driving the transmission belt to rotate, The frame 1 is also provided with a rectifying component 28 for rectifying the substrate. The positive positioning assembly 28 includes a stopper 281 between the two conveyor belts 26, a third cylinder 282 that drives the stopper 281 to lift, a positive positioning block 283 located on both sides of the conveyor belt 26, and a fourth cylinder that drives the normal positioning block 283 to move 284, the stopper 281 is fixed on the output shaft of the third cylinder 282 by screws, the positive position block 283 is fixed on the output shaft of the fourth cylinder 284 by screws, and the frame 1 is provided with an inductor 29 on one side of the conveyor belt 26. 29 is an infrared sensor 29, and the sensor 29 is electrically connected to the third cylinder 282 and the fourth cylinder 284. When the substrate is conveyed by the conveyor belt 26, the sensor 29 detects the substrate, and sends a signal to the third cylinder 282 and the fourth cylinder 284, and the third cylinder 282 pushes out the block 281 to block the substrate, and then the cylinders on both sides The fourth cylinder 284 drives two uprighting blocks 283 to cooperate with clamping the substrate, so that the substrate is stably located at the designated station. After the silk screen printing is completed, the stopper 281 and the uprighting block 283 release the substrate, so that the substrate is continued to be transported.

A kind of printing method that proposes according to embodiment:

S1. The conveyor belt 26 transports the substrate to the printing station, the third cylinder 282 drives the stopper 281 to extend out to block the substrate, and at the same time, the fourth cylinder 284 drives the alignment block 283 to align and clamp the substrate;

S2. The first drive motor 33 drives the screw 32 to rotate, and drives the screw 32 on the other side of the frame 1 to rotate through the transmission rod 21, so that the lifting frame 2 is lowered, and the screen printing screen is in contact with the substrate, and the first cylinder 9 drives the second A scraper 10 descends to contact the screen, and the second cylinder 8 pushes the sliding table to move so that the first scraper 10 moves along the surface of the screen. At the same time, the ink nozzle 12 sprays ink, so that the ink is squeezed by the first scraper 10 and Printed onto the surface of the substrate;

S3, the screen printing is completed, lift the lifting frame 2 through the lifting assembly 3, so that the screen printing plate 5 is away from the substrate, the first cylinder 9 drives the first scraper 10 to rise, and the other first cylinder 9 drives the second scraper 11 to go down , and abut against the surface of the screen, and then move in reverse along the running path of the first scraper 10, and scrape the ink remaining on the surface of the screen to the side where the ink discharge port 14 is provided, and the excess ink is discharged through the ink Port 14 flows out, and flows into the ink collecting tank 30 through the ink feeding pipe 15;

S4. The third cylinder 282 drives the baffle to descend, and at the same time, the fourth cylinder 284 drives the alignment block 283 away from the substrate, so that the substrate is transported and unloaded by the conveyor belt 26 .

The implementation principle of the embodiment of the present application is: during screen printing, the ink is sprayed from the ink nozzle 12 to the surface of the screen, and then the first scraper 10 scrapes the surface of the screen, squeezes the ink through the screen, and prints it on the surface of the substrate. The ink ejection head 12 ejects the ink, controls the output of the ink, and reduces the residual amount of the ink on the surface of the screen. After the screen printing is completed, the second scraper 11 moves in reverse along the moving path of the first scraper 10 to scrape back the ink remaining on the surface of the screen, and the scraped ink flows through the ink outlet 14 through the ink outlet tube 15 into the ink collection box 30, thereby reducing the amount of ink residue on the screen surface, thereby improving the quality of screen printing.

All of the above are preferred embodiments of the application, and are not intended to limit the protection scope of the application. Therefore, all equivalent changes made according to the structure, shape, and principle of the application should be covered by the protection scope of the application. Inside.

Claims (9)

1. A screen printing device, comprising a frame (1), characterized in that: the frame (1) is provided with a lifting frame (2), and the frame (1) is provided with a driving lifting frame (2) A lifting assembly (3) for lifting, the lifting frame (2) is provided with a screen printing plate (5), the lifting frame (2) is provided with a mounting platform (6), and the mounting platform (6) slides A sliding block (7) is provided, and the mounting table (6) is provided with a driving member for driving the sliding block (7) to move, and the sliding block (7) is fixed with two first cylinders (9), so The output shaft of the first cylinder (9) is set towards the screen printing plate (5), wherein one of the first cylinders (9) is fixed with a first scraper (10) for silk screen printing, and the other one is The first cylinder (9) is provided with the second scraper (11) that is used to clean the ink on the screen surface, the side of the first scraper (10) is provided with some ink nozzles (12), and the frame (1) An ink feeding box (13) is provided, the ink nozzle (12) is connected to the ink feeding box (13), and the frame side wall of the screen printing plate (5) is located at the valley of the curved surface to open an ink feeding port (14), the frame of the screen printing plate (5) provided with the ink feeding port (14) is hollow, and the bottom wall of the frame is connected with several ink feeding tubes (15). 2. A screen printing device according to claim 1, characterized in that: the frame (1) is provided with a first chute (17), and the lifting assembly (3) includes a 2) The first slider (31) at both ends, the screw (32) arranged in the first chute (17), and the first driver fixed to the frame (1) for driving the screw (32) to rotate The motor (33), the screw rod (32) is threaded through the first slider (31), and the first slider (31) is slidably connected in the first slide groove (17). 3. A kind of screen printing device according to claim 2, characterized in that: one end of one of the screw rods (32) is coaxially fixed with a first gear (18), and the first drive motor (33) The second gear (19) is coaxially fixed on the output shaft of the second gear (19), and the first bevel gear (18) is meshed with the second gear (19), and the first bevel gear is coaxially fixed at one end of the two screw rods (32). (20), the frame (1) is rotatably connected with a transmission rod (21), and the two ends of the transmission rod (21) are respectively coaxially fixed with a second bevel gear (22), and the first bevel gear ( 20) Mesh with the corresponding second bevel gear (22). 4. A screen printing device according to claim 3, characterized in that: the drive member is a second cylinder (8), the output shaft of the second cylinder (8) and the sliding block (7) Fixedly connected, the installation platform (6) is provided with a sliding groove (23), the sliding block (7) is slidingly connected to the sliding groove (23), and the side wall of the sliding block (7) is fixed with For the second sliding block (24), the side wall of the sliding groove (23) is provided with a second sliding groove (25), and the second sliding block (24) is slidingly connected to the second sliding groove (25). 5. A kind of screen printing device according to claim 1, characterized in that: the frame (1) is provided with a conveyor belt (26) for conveying substrates, and the frame (1) is provided with a driving transmission belt The second driving motor (27) rotates, and the frame (1) is provided with a positive positioning component (28) for positive positioning of the substrate. 6. A screen printing device according to claim 5, characterized in that: the conveyor belt (26) is divided into two, and there is a space between the two conveyor belts (26), and the alignment assembly (28 ) includes a stopper (281) between two conveyor belts (26), a third cylinder (282) that drives the stopper (281) to lift, a positive position block (283) on both sides of the conveyor belt (26) and a drive The fourth air cylinder (284) that positive block (283) moves, and described frame (1) is positioned at the side of conveyer belt (26) and is provided with inductor (29), and described inductor (29) and the 3rd air cylinder ( 282) and the fourth cylinder (284) are electrically connected. 7. A screen printing device according to claim 1, characterized in that: the inside of the hollow frame of the screen printing plate (5) is provided with several slopes at the joint of the ink feeding pipe (15) (16), several inclined surfaces (16) form a funnel shape. 8. A screen printing device according to claim 1, characterized in that: the other end of the ink feeding pipe (15) is connected with an ink collecting box (30). 9. A printing method, using a screen printing device according to any one of claims 1 to 8, characterized in that: comprising the following steps: S1. The conveyer belt (26) transports the substrate to the printing station, and corrects the substrate through the alignment component (28); S2. The lifting frame (2) is driven down by the lifting assembly (3), so that the screen printing plate (5) is in contact with the substrate, and the first cylinder (9) drives the first scraper (10) down to contact the screen, The second cylinder (8) pushes the sliding table to move so that the first scraper (10) moves along the surface of the screen, and at the same time, the ink nozzle (12) sprays ink, so that the ink is squeezed and printed by the first scraper (10) to the surface of the substrate; S3, the silk screen is completed, the lifting component (3) lifts the lifting frame (2), the first cylinder (9) drives the first scraper (10) to rise, and the other first cylinder (9) drives the second scraper (11) Descend and abut against the surface of the screen, then move in reverse along the running path of the first scraper (10), and scrape the ink remaining on the surface of the screen to the side where the ink discharge port (14) is provided. The ink flows out through the ink discharge port (14), and flows into the ink collection box (30) through the ink discharge pipe (15); S4, the conveyer belt (26) will complete the substrate transportation blanking of silk screen.

Images