Anti-deviation screen printing plate

Abstract

The utility model discloses an anti-offset screen printing plate, which relates to the technical field of screen printing plates, and comprises a screen printing plate main body, a printing piece, a screen printing plate, an adjusting and limiting assembly and an offset detection assembly, the printing piece is arranged on the front surface of the screen printing plate main body, the screen printing plate is arranged at the bottom of the printing piece, the screen printing plate is arranged on the front surface of the screen printing plate main body, and the adjusting and limiting assembly is arranged on the screen printing plate main body. The adjusting and limiting assembly is installed on the front face of the screen printing plate body, and the offset detection assembly is arranged on the outer side of the front face of the screen printing plate body. According to the utility model, the adjusting and limiting assembly is matched with the offset detection assembly to carry out limiting offset detection on the outer side of the screen printing plate, so that the problem that the existing screen printing plate does not have an anti-offset structure in use is solved; the problem that the use effect of the screen printing plate is reduced due to the fact that the screen printing plate is easily affected by factors such as installation errors, mechanical vibration, scraper pressure change and screen printing plate tension fluctuation in the printing process and position deviation is caused is solved, and the effect of anti-deviation detection is achieved.

Description

Technical Field

[0001] This utility model relates to the field of screen printing technology, specifically to an anti-offset screen printing plate. Background Technology

[0002] A screen printing plate, also known as a screen printing plate, is a key component in screen printing used to transfer ink onto a substrate. It consists of a screen, a frame, and photosensitive emulsion. First, the screen is stretched tightly onto the frame, and then photosensitive emulsion is coated on the screen. After exposure and development processes, the photosensitive emulsion forms transparent and blocking parts with patterns or text. During printing, the ink is printed onto the substrate through the transparent parts, thus reproducing the pattern or text.

[0003] For example, a screen printing plate with publication number CN210415855U includes a square outer frame and a screen. The outer frame includes an upper frame and a lower frame, both of which are composed of frame strips connected sequentially. A clamping groove is formed on the bottom surface of the upper frame and the top surface of the lower frame. A clamping strip is embedded in the clamping groove, and the straight line of the clamping strip is parallel to the straight line of the clamping groove. The width of the clamping strip is smaller than the width of the clamping groove. A threaded post perpendicular to the frame strip is fixedly installed on the side of the clamping strip away from the center of the outer frame. The threaded post passes through the frame strip, and a fixing ring is threaded onto the outer end of the threaded post. Only one threaded post on one side of the outer frame has a fixing ring installed on it. This design can tighten the screen located between the upper and lower frames, improving the printing effect of the screen printing plate.

[0004] Based on the search of patent numbers, and combined with the shortcomings of existing technologies, the following findings were made;

[0005] The existing screen printing plates lack anti-offset structures, which makes them highly susceptible to positional shifts during the printing process due to factors such as installation errors, mechanical vibrations, changes in squeegee pressure, and fluctuations in screen tension, thus reducing the screen printing plate's performance. Utility Model Content

[0006] To address the problems mentioned in the background art, the purpose of this utility model is to provide an anti-offset screen, which has the advantage of anti-offset detection. This solves the problem that existing screens lack an anti-offset structure, which makes them highly susceptible to positional shifts during printing due to factors such as installation errors, mechanical vibrations, changes in squeegee pressure, and screen tension fluctuations, thus reducing the screen's performance.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an anti-offset screen, comprising a screen body, a printing element, a screen printing mesh, an adjustment and limiting component, and an offset detection component. The printing element is mounted on the front side of the screen body, the screen printing mesh is disposed at the bottom of the printing element, the screen printing mesh is disposed on the front side of the screen body, the adjustment and limiting component is mounted on the front side of the screen body, and the offset detection component is disposed on the outer side of the front side of the screen body.

[0008] In a preferred embodiment of this utility model, the adjusting and limiting assembly includes a support plate. A motor is installed on both the front and rear sides of one bottom side of the support plate. A reducer is installed at the output end of the motor. A screw is installed on the other side of the reducer. Screw sleeves are threaded to both sides of the screw surface. A limiting plate is provided at the top of the screw sleeves. The limiting plate is located at the top of the support plate.

[0009] As a preferred embodiment of this utility model, the offset detection component includes a high-precision displacement sensor, which is installed on the outer side of the top of the support plate. The high-precision displacement sensor is electrically connected to a controller via a wire, and the controller is electrically connected to an alarm via a wire. The alarm is installed on the top of the support plate, and the controller is installed on one side of the screen body. A laser sensor is provided on the front side of the top of the support plate, and the laser sensor is electrically connected to the controller via a wire.

[0010] As a preferred embodiment of this utility model, a positioning plate is installed on the rear side of the top of the support plate, an electric push rod is installed on the bottom of the support plate, a movable plate is installed at the output end of the electric push rod, and the movable plate is located on the top of the support plate.

[0011] As a preferred embodiment of this utility model, the bottom of the support plate is provided with a movable groove, the surface of the movable plate is located inside the movable groove, and a protective column is installed on the outside of the electric push rod, the protective column being installed at the bottom of the support plate.

[0012] As a preferred embodiment of this utility model, a positioning rod is installed on the outer side of the limiting plate, and a positioning column is movably connected to the surface of the positioning rod, with the positioning column installed on the top of the support plate.

[0013] As a preferred embodiment of this invention, a rubber plate is installed on the back of the movable plate, an elastic plate is installed on the inner side of the limiting plate, a mounting bracket is installed on the front of the laser sensor, and the mounting bracket is installed on the top of the support plate.

[0014] As a preferred embodiment of this utility model, the top of the limiting plate is provided with a connecting groove, an electromagnetic block is installed at the bottom of the inner wall of the connecting groove, an iron block is provided at the top of the electromagnetic block, and a pressing block is installed at the top of the iron block.

[0015] As a preferred embodiment of this invention, a spring is installed on the top of the electromagnetic block, the other end of the spring is installed on the bottom of the iron block, a telescopic sliding column is installed on the bottom of the iron block, and the bottom of the telescopic sliding column is installed on the bottom of the electromagnetic block.

[0016] As a preferred embodiment of this utility model, a connecting block is installed on the outer side of the limiting plate, the other end of the connecting block is installed on the outer side of the threaded sleeve, a protective box is installed at the bottom of the support plate, a movable groove is opened on the outer side of the protective box, and the surface of the connecting block is located inside the movable groove.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1. This utility model solves the problem of existing screen printing plates lacking anti-offset structures, which makes them highly susceptible to positional shifts due to factors such as installation errors, mechanical vibrations, squeegee pressure changes, and screen tension fluctuations during printing, thus reducing the screen printing effect. This invention achieves the effect of anti-offset detection.

[0019] 2. This utility model, by setting an adjustment and limiting component, allows the motor to be started during use. The motor drives the reducer and screw to rotate, causing the screw sleeve to move on the screw. Through the connecting block, the limiting plate is then moved. The position can be flexibly adjusted according to the screen printing plate of different sizes, making it highly adaptable. At the same time, the limiting plate can effectively limit the edge of the screen printing plate, preventing it from shaking or shifting randomly during the printing process, ensuring the relative stability of the screen printing plate during printing, and improving the printing quality.

[0020] 3. This utility model, by setting up an offset detection component, enables a high-precision displacement sensor to accurately measure the displacement change of the printing screen, and a laser sensor to monitor the position status of the printing screen. When the offset of the printing screen exceeds the preset range, the high-precision displacement sensor and the laser sensor transmit signals to the controller, which then controls the alarm to sound an alarm. This achieves real-time monitoring and early warning of printing screen offset, allowing operators to take timely measures to correct the offset, avoid printing defects caused by offset, and improve printing accuracy and product qualification rate. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the three-dimensional disassembled structure of this utility model;

[0023] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0024] Figure 4 This utility model Figure 2 Enlarged structural diagram at point B.

[0025] In the diagram: 1. Main body of the screen; 2. Printed part; 3. Screen printing plate; 4. Adjustment and limit assembly; 41. Support plate; 42. Motor; 43. Reducer; 44. Screw; 45. Screw sleeve; 46. Limit plate; 5. Offset detection assembly; 51. High-precision displacement sensor; 52. Controller; 53. Alarm; 54. Laser sensor; 6. Positioning plate; 7. Electric push rod; 8. Moving plate; 9. Moving groove; 10. Protective column; 11. Positioning rod; 12. Positioning column; 13. Rubber plate; 14. Elastic plate; 15. Mounting bracket; 16. Connecting groove; 17. Electromagnetic block; 18. Iron block; 19. Pressing block; 20. Spring; 21. Telescopic sliding column; 22. Connecting block; 23. Protective box; 24. Moving groove. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1 , 2 As shown in Figures 3 and 4, the present invention provides an anti-offset screen printing plate, including a screen printing plate body 1, a printing part 2, a screen printing plate 3, an adjustment and limiting component 4, and an offset detection component 5. The printing part 2 is installed on the front side of the screen printing plate body 1, the screen printing plate 3 is disposed at the bottom of the printing part 2, the screen printing plate 3 is disposed on the front side of the screen printing plate body 1, the adjustment and limiting component 4 is installed on the front side of the screen printing plate body 1, and the offset detection component 5 is disposed on the outer side of the front side of the screen printing plate body 1.

[0028] In this embodiment, as Figure 3 As shown, the adjusting limit assembly 4 includes a support plate 41. A motor 42 is installed on the front and rear sides of one bottom side of the support plate 41. A reducer 43 is installed at the output end of the motor 42. A screw 44 is installed on the other side of the reducer 43. Screw sleeves 45 are threaded to both sides of the surface of the screw 44. A limit plate 46 is provided on the top of the screw sleeve 45. The limit plate 46 is located on the top of the support plate 41.

[0029] As a technical optimization of this utility model, by setting the adjustment and limiting component 4, the motor 42 can be started during use. The motor 42 drives the reducer 43 and the screw 44 to rotate, so that the screw sleeve 45 moves on the screw 44. Through the connecting block 22, the limiting plate 46 is moved. The position can be flexibly adjusted according to the screen printing plate 3 of different sizes, which is highly adaptable. At the same time, the limiting plate 46 can effectively limit the edge of the screen printing plate 3, preventing it from shaking or shifting at will during the printing process, ensuring the relative stability of the screen printing plate 3 during printing, and improving the printing quality.

[0030] In a further preferred embodiment, such as Figure 2 As shown, the offset detection component 5 includes a high-precision displacement sensor 51, which is installed on the outer side of the top of the support plate 41. The high-precision displacement sensor 51 is electrically connected to a controller 52 via a wire. The controller 52 is electrically connected to an alarm 53 via a wire. The alarm 53 is installed on the top of the support plate 41. The controller 52 is installed on one side of the screen body 1. A laser sensor 54 is provided on the front side of the top of the support plate 41. The laser sensor 54 is electrically connected to the controller 52 via a wire. The high-precision displacement sensor 51 is a Keyence LK-H052, the laser sensor 54 is a SICK DT50-P2123, and the controller 52 is a Siemens SIMATIC S7-1200.

[0031] As a technical optimization of this utility model, by setting the offset detection component 5, the high-precision displacement sensor 51 can accurately measure the displacement change of the screen printing plate 3, and the laser sensor 54 can monitor the position status of the screen printing plate 3. When the offset of the screen printing plate 3 exceeds the preset range, the high-precision displacement sensor 51 and the laser sensor 54 transmit signals to the controller 52. The controller 52 controls the alarm 53 to issue an alarm, realizing real-time monitoring and early warning of the offset of the screen printing plate 3, allowing operators to take timely measures to correct the offset, avoid printing defects caused by the offset, and improve the printing accuracy and product qualification rate.

[0032] Furthermore, such as Figure 2 As shown, a positioning plate 6 is installed on the rear side of the top of the support plate 41, an electric push rod 7 is installed on the bottom of the support plate 41, and a movable plate 8 is installed at the output end of the electric push rod 7. The movable plate 8 is located on the top of the support plate 41.

[0033] As a technical optimization of this utility model, by setting a positioning plate 6, an electric push rod 7, and a moving plate 8, the positioning plate 6 provides an accurate reference position for the installation of the screen printing plate 3, ensuring the accuracy of the screen printing plate 3 during initial installation. The electric push rod 7 can adjust the position of the moving plate 8 according to actual needs. The moving plate 8 can assist in positioning the front of the screen printing plate 3, playing a further stabilizing role in the printing process, and enhancing the stability of the screen printing plate 3 and the accuracy of printing.

[0034] Preferred, such as Figure 2 As shown, a movable groove 9 is provided at the bottom of the support plate 41, the surface of the movable plate 8 is located inside the movable groove 9, and a protective column 10 is installed on the outside of the electric push rod 7. The protective column 10 is installed at the bottom of the support plate 41.

[0035] As a technical optimization of this utility model, by setting the moving groove 9 and the protective column 10, the moving groove 9 provides a guiding function for the movement of the moving plate 8, ensuring the stability and accuracy of the moving plate 8 during the movement process, and preventing it from deviating or shaking. The protective column 10 is installed on the outside of the electric push rod 7, which protects the electric push rod 7, prevents it from being hit or damaged during use, extends the service life of the electric push rod 7, and ensures the smooth use of the electric push rod 7.

[0036] In addition, such as Figure 1 As shown, a positioning rod 11 is installed on the outer side of the limiting plate 46, and a positioning post 12 is movably connected to the surface of the positioning rod 11. The positioning post 12 is installed on the top of the support plate 41.

[0037] As a technical optimization of this utility model, by setting a positioning rod 11 and a positioning post 12, the positioning rod 11 is movably connected to the positioning post 12. During the movement of the limiting plate 46, the positioning rod 11 moves along the positioning post 12. This not only provides guidance for the movement of the limiting plate 46, making its movement more stable and smooth, but also enhances the stability of the limiting plate 46. When limiting the screen printing plate 3, the cooperation of the positioning rod 11 and the positioning post 12 can effectively prevent the limiting plate 46 from shaking or shifting, further improving the reliability of limiting the screen printing plate 3 and helping to ensure the printing accuracy of the screen printing plate 3.

[0038] It is worth noting that, such as Figure 2 and 4 As shown, a rubber plate 13 is installed on the back of the movable plate 8, an elastic plate 14 is installed on the inner side of the limiting plate 46, and a mounting bracket 15 is installed on the front of the laser sensor 54. The mounting bracket 15 is installed on the top of the support plate 41.

[0039] As a technical optimization of this utility model, by setting up a rubber plate 13, an elastic plate 14, and a mounting bracket 15, the rubber plate 13 on the back of the moving plate 8 can increase the friction between it and the screen printing plate 3, preventing the screen from sliding on the moving plate 8 and improving the stability of the screen printing plate 3. The elastic plate 14 on the inner side of the limiting plate 46 can play a buffering role when limiting the screen printing plate 3, avoiding hard damage to the screen printing plate 3 caused by the limiting plate 46. The mounting bracket 15 is used to fix the laser sensor 54, ensuring the positional accuracy of the laser sensor 54, so that it can stably detect the screen printing plate 3, thereby improving the reliability of the screen printing plate 3 detection and printing process.

[0040] Furthermore, such as Figure 4 As shown, the top of the limiting plate 46 is provided with a connecting groove 16, the bottom of the inner wall of the connecting groove 16 is provided with an electromagnetic block 17, the top of the electromagnetic block 17 is provided with an iron block 18, and the top of the iron block 18 is provided with a pressing block 19.

[0041] As a technical optimization of this utility model, by setting up a connecting groove 16, an electromagnetic block 17, an iron block 18, and a pressing block 19, when the electromagnetic block 17 is energized, it generates magnetism to attract the iron block 18. The iron block 18 drives the pressing block 19 to move downward, thereby pressing and fixing the screen printing plate 3. The pressing force on the screen printing plate 3 can be flexibly controlled according to actual printing needs, which enhances the stability of the screen printing plate 3 in the printing process, prevents the screen printing plate 3 from shifting due to factors such as squeegee pressure during printing, and improves the accuracy and quality of printing.

[0042] Preferred, such as Figure 2 As shown, a spring 20 is installed on the top of the electromagnetic block 17, and the other end of the spring 20 is installed on the bottom of the iron block 18. A telescopic sliding column 21 is installed on the bottom of the iron block 18, and the bottom of the telescopic sliding column 21 is installed on the bottom of the electromagnetic block 17.

[0043] As a technical optimization of this utility model, by setting a spring 20 and a telescopic sliding column 21, the spring 20 plays a buffering and resetting role between the electromagnetic block 17 and the iron block 18. When the electromagnetic block 17 is de-energized, the spring 20 pushes the iron block 18 to move upward, so that the pressing block 19 is separated from the screen printing plate 3, which facilitates the replacement or adjustment of the screen printing plate 3. The telescopic sliding column 21 ensures the stability of the iron block 18 during the up and down movement, so that it can move along a fixed trajectory. On the other hand, it provides a certain support and protection for the spring 20, extends the service life of the spring 20, and ensures that the pressing structure can work normally.

[0044] In addition, such as Figure 2As shown, a connecting block 22 is installed on the outer side of the limiting plate 46, and the other end of the connecting block 22 is installed on the outer side of the screw sleeve 45. A protective box 23 is installed at the bottom of the support plate 41. A movable groove 24 is opened on the outer side of the protective box 23, and the surface of the connecting block 22 is located inside the movable groove 24.

[0045] As a technical optimization of this utility model, by setting a connecting block 22, a protective column 10 and a movable groove 24, the connecting block 22 connects the limiting plate 46 and the screw sleeve 45 together, ensuring that the limiting plate 46 can move synchronously with the movement of the screw sleeve 45. The protective box 23 is installed at the bottom of the support plate 41, which protects the internal components such as the motor 42 and the reducer 43, preventing dust and debris from entering and affecting their normal operation. The movable groove 24 provides space for the movement of the connecting block 22, so that the connecting block 22 will not be obstructed during the movement.

[0046] The working principle and usage process of this utility model are as follows: During use, the motor 42 is started according to the size of the screen printing plate 3. The motor 42 drives the reducer 43, which reduces the speed and increases the torque, driving the screw 44 to rotate. Due to the threaded connection, the threaded sleeves 45 on both sides of the screw 44 move on its surface as the screw 44 rotates. Since the limiting plate 46 is connected to the threaded sleeves 45 through the connecting block 22, the movement of the threaded sleeves 45 drives the limiting plate 46 to move. The operator can flexibly adjust the position of the limiting plate 46 according to the actual situation to match the edge of the screen printing plate 3, thereby effectively limiting the edge of the screen printing plate 3 and preventing the screen printing plate 3 from moving arbitrarily during subsequent printing. If the screen printing plate 3 shakes or shifts, the electric push rod 7 adjusts the position of the moving plate 8 according to actual needs. The moving plate 8 not only assists in positioning the front of the screen printing plate 3, but also plays a role in further stabilizing the screen printing plate 3 during the printing process. When the moving plate 8 moves, its surface is located in the moving groove 9 opened at the bottom of the support plate 41. The moving groove 9 provides precise guidance for the movement of the moving plate 8, ensuring the stability and accuracy of the moving plate 8 during the movement process and preventing it from shifting or shaking. The protective post 10 installed on the outside of the electric push rod 7 protects the electric push rod 7 from collisions or damage during use, ensuring that the electric push rod 7 can work normally and maintain the stability of the screen printing plate 3. When it is necessary to press and fix the screen printing plate 3, the electromagnetic block 17 installed at the bottom of the inner wall of the connecting groove 16 is energized. After being energized, the electromagnetic block 17 generates magnetism, attracting the iron block 18 to move downward. The iron block 18 drives the pressing block 19 installed at the top to move downward together, thereby pressing and fixing the screen printing plate 3. The operator can flexibly control the pressing force of the screen printing plate 3 by controlling the current of the electromagnetic block 17 according to the actual printing needs, thereby enhancing the stability of the screen printing plate 3 during the printing process and preventing the screen printing plate 3 from shifting due to factors such as squeegee pressure during printing, thus improving the printing accuracy and quality. During the printing process, the high-precision displacement sensor 51 and the laser sensor 54 continuously... The high-precision displacement sensor 51 accurately measures the displacement changes of the screen printing plate 3, while the laser sensor 54 monitors the position of the screen printing plate 3 in real time from a specific angle. Once the offset of the screen printing plate 3 exceeds the preset range, the high-precision displacement sensor 51 and the laser sensor 54 will immediately transmit signals to the controller 52. After receiving the signal, the controller 52 will quickly control the alarm 53 to issue an alarm, reminding the operator that the screen printing plate 3 has been offset, so that the operator can take timely measures to correct the offset, ensure the accuracy of printing, avoid printing defects, and thus improve the product qualification rate. This achieves the effect of anti-offset detection and enhances the use effect of the screen printing plate 3.

[0047] In summary, this anti-offset screen, by setting the adjustment limit component 4 in conjunction with the offset detection component 5 to detect the outer limit offset of the printing screen 3, solves the problem that existing screens lack an anti-offset structure, which makes them highly susceptible to positional shifts during printing due to factors such as installation errors, mechanical vibrations, changes in squeegee pressure, and screen tension fluctuations, thus reducing the screen's performance.

[0048] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An anti-creep screen comprising a screen body (1), characterized in that: Also include printing (2), printing screen (3), adjusting the limiting component (4) and offset detection component (5), the printing (2) is installed in the front of screen body (1), the printing screen (3) is set in the bottom of printing (2), the printing screen (3) is set in the front of screen body (1), the adjusting limiting component (4) is installed in the front of screen body (1), the offset detection component (5) is set in the outside of the front of screen body (1).

2. The anti-walk-off screen of claim 1, wherein: The adjusting limiting component (4) includes a support plate (41), the front side and the rear side of one side of the bottom of the support plate (41) are provided with a motor (42), the output end of the motor (42) is provided with a speed reducer (43), the other side of the speed reducer (43) is provided with a screw rod (44), the surface of the screw rod (44) is provided with a threaded sleeve (45) on both sides, the top of the threaded sleeve (45) is provided with a limiting plate (46), and the limiting plate (46) is located on the top of the support plate (41).

3. The anti-walk-off screen of claim 2, wherein: The offset detection component (5) includes a high-precision displacement sensor (51), the high-precision displacement sensor (51) is installed on the outside of the top of the support plate (41), the high-precision displacement sensor (51) is electrically connected with a controller (52) through wires, the controller (52) is electrically connected with a warning device (53) through wires, the warning device (53) is installed on the top of the support plate (41), the controller (52) is installed on one side of the screen body (1), the front side of the top of the support plate (41) is provided with a laser sensor (54), and the laser sensor (54) is electrically connected with the controller (52) through wires.

4. The anti-walk-off screen of claim 3, wherein: The rear side of the top of the support plate (41) is provided with a positioning plate (6), the bottom of the support plate (41) is provided with an electric push rod (7), the output end of the electric push rod (7) is provided with a moving plate (8), and the moving plate (8) is located on the top of the support plate (41).

5. The anti-walk-off screen of claim 4, wherein: The bottom of the support plate (41) is provided with a moving groove (9), the surface of the moving plate (8) is located in the inside of the moving groove (9), the outside of the electric push rod (7) is provided with a protection column (10), and the protection column (10) is installed on the bottom of the support plate (41).

6. The anti-walk-off screen of claim 2, wherein: The outside of the limiting plate (46) is provided with a positioning rod (11), the surface of the positioning rod (11) is movably connected with a positioning column (12), and the positioning column (12) is installed on the top of the support plate (41).

7. The anti-walk-off screen of claim 5, wherein: The back of the moving plate (8) is provided with a rubber plate (13), the inside of the limiting plate (46) is provided with an elastic plate (14), the front of the laser sensor (54) is provided with a mounting bracket (15), and the mounting bracket (15) is installed on the top of the support plate (41).

8. The anti-walk-off screen of claim 2, wherein: The top of the limiting plate (46) is provided with a communication groove (16), the bottom of the inner wall of the communication groove (16) is provided with an electromagnetic block (17), the top of the electromagnetic block (17) is provided with an iron block (18), and the top of the iron block (18) is provided with a pressing block (19).

9. The anti-walk-off screen of claim 8, wherein: The top of the electromagnetic block (17) is provided with a spring (20), the other end of the spring (20) is installed at the bottom of an iron block (18), the bottom of the iron block (18) is provided with a telescopic sliding column (21), and the bottom of the telescopic sliding column (21) is installed at the bottom of the electromagnetic block (17).

10. The anti-walk-off screen printing form of claim 2, wherein: The outer side of the limiting plate (46) is provided with a connecting block (22), the other end of the connecting block (22) is installed at the outer side of the screw sleeve (45), the bottom of the supporting plate (41) is provided with a protection box (23), the outer side of the protection box (23) is provided with a movable groove (24), and the surface of the connecting block (22) is located in the movable groove (24).

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