A screen printing device for the production of safety helmets

Abstract

This application relates to the field of screen printing technology and discloses a screen printing device for the production of safety helmets, comprising: a support frame, serving as the basic component of the overall device for supporting and assembling various processing mechanisms and their subordinate structural components; a rotating clamping mechanism, disposed inside the support frame, for securely clamping the safety helmet; a synchronous adjustment mechanism, disposed on one side of the outer wall of the support frame, for synchronously adjusting the position of the ink filaments; and a scraping mechanism, fixedly connected to the top of the support frame, for scraping the ink filaments on different outer walls of the safety helmets. The rotating clamping mechanism includes a fixed frame. By setting up the scraping mechanism, the inner arc of the scraper can be adjusted during clamping and adjustment inside the safety helmet, thereby increasing the contact area when the scraper scrapes different outer walls of the safety helmet, thus improving the printing quality of the screen printing and accelerating the ink accumulation speed, thereby further improving the printing effect.

Description

Technical Field

[0001] This invention relates to the field of screen printing technology, specifically to a screen printing device for the production of safety helmets. Background Technology

[0002] Screen printing is a traditional printing method. Its main principle is to use a screen as a carrier for the pattern. Ink is evenly applied to the screen using a squeegee, thereby transferring the pattern to the surface of the helmet. During the printing process, ink is evenly applied to the screen surface, and the squeegee slides to transfer the ink onto the helmet according to the pre-designed pattern, forming a beautiful pattern. Screen printing uses special inks and processes, which can make the pattern have high clarity and color saturation, making the helmet more visually impactful.

[0003] Given the mass production of safety helmets, screen printing is performed on safety helmets of different diameters at a unified processing location. When the diameter of the safety helmet changes, the clamping distance of the safety helmet and the fixing position of the two ends of the screen are also adjusted accordingly. Since the diameter of the safety helmet directly affects the curvature of its outer wall, it is difficult for the inner arc of the scraper to fit tightly with the outer arc of the outer surface of the safety helmet, which may result in uneven ink scraping and ultimately incomplete pattern printing. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a screen printing device for the production of safety helmets, which solves the problem that the inner arc of the squeegee is difficult to fit tightly with the outer arc of the outer surface of the safety helmet, which may lead to uneven ink scraping and ultimately incomplete pattern printing.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a screen printing device for the production of safety helmets, comprising:

[0006] The support frame, as the basic component of the overall device, is used to support and assemble various processing mechanisms and their subordinate structural components;

[0007] The rotating clamping mechanism, located inside the support frame, is used to securely clamp the safety helmet.

[0008] A synchronous adjustment mechanism, located on one side of the outer wall of the support frame, is used to synchronously adjust the position of the ink filaments;

[0009] The scraping mechanism, which is fixedly connected to the top of the support frame, is used to scrape the ink filaments on the outer wall of different safety helmets.

[0010] Preferably, the rotating clamping mechanism includes a fixed frame, a support plate fixedly connected to the inner bottom of the fixed frame, a servo motor fixedly connected to one side of the outer wall of the support plate, a rotating plate fixedly connected to the output end of the servo motor, a rotating shaft fixedly connected to both ends of one side of the outer wall of the rotating plate, a diagonal rod rotatably connected to the inside of the diagonal rod, a limit frame fixedly connected to the outer wall of the servo motor, a slider slidably connected to the inside of the limit frame, a spring fixedly connected to one side of the outer wall of the slider, the other end of the diagonal rod rotatably connected to the slider, an extension rod fixedly connected to one side of the outer wall of the slider, and a pad provided at the top end of the extension rod.

[0011] Preferably, the synchronous adjustment mechanism includes a synchronous rod, one end of which is fixedly connected to the outer wall of the slider, and the other end of which is fixedly connected to an L-shaped frame. A positioning ring is provided inside the L-shaped frame, and the wire mesh is held between the L-shaped frame and the positioning ring.

[0012] Preferably, a liquid holding tank is fixedly connected to one side of the outer wall of the L-shaped frame, and two liquid holding tanks are connected by an infusion pipe. Multiple side extension tubes are equidistantly opened on one side of the outer wall of the infusion pipe.

[0013] Preferably, a positioning plate is fixedly connected to the outer wall of the side extension tube, and the wire mesh is disposed inside the positioning plate.

[0014] Preferably, the scraping mechanism includes a fixed frame, which is fixedly connected to one side of the outer wall of the support frame. A fixed shaft is fixedly connected to one side of the outer wall of the fixed frame. One end of a rocker arm is rotatably connected inside the fixed shaft. A limit ring is also fixedly connected to one side of the outer wall of the fixed frame. A slide rod is slidably connected inside the limit ring. The other end of the rocker arm is fixedly connected to one side of the outer wall of the slide rod. One end of an extension plate is fixedly connected inside the slide rod. A long shaft is fixedly connected to the other end of the extension plate. A scraper frame is fixedly connected to one side of the outer wall of the long shaft. A fixed arc is fixedly connected inside the scraper frame. A rotating arc is rotatably connected inside the fixed arc.

[0015] Preferably, the same rubber strip is fixedly connected to one side of the outer wall of the plurality of the rotating arcs.

[0016] Preferably, the inner wall of the limiting ring has a groove, and the slide rod is slidably connected inside the limiting ring.

[0017] Preferably, the top end of the extension rod is fixedly connected to a second rotating shaft, and one side of the outer wall of the pad is rotatably connected to the inside of the second rotating shaft.

[0018] Working Principle: After the servo motor starts, it drives the rotating plate to rotate. During this process, the movement of the rotating plate drives the first rotating shaft to perform a circular motion. This force is transmitted through the diagonal rod, thereby realizing the transmission of torque. Under the constraint of the limit frame, the slider slides in a limited position as the rotating plate rotates. It is worth noting that the sliding directions of the two sliders are opposite. When the sliders slide, their distance gradually decreases. At this time, the spring is compressed and puts it in a contracted state. When the distance between the sliders continues to decrease until it reaches a certain level, the safety helmet can be placed on the pad. After the safety helmet is placed, the servo motor will rotate in the opposite direction, so that the system returns to its original state. As the spring is no longer compressed, it will begin to return to its original length. This restoring force will push the slider outward, so that the pad exerts pressure on the inner wall of the safety helmet. In this way, the safety helmet is stably clamped. Throughout the process, the servo motor, rotating plate, first rotating shaft, diagonal rod, limit frame, slider, and spring work together to ensure the stability and safety of the safety helmet. During the movement of the slider, it drives the synchronous rod to slide smoothly. The most crucial aspect of this process is the alteration of the spacing between the two L-shaped frames. The unique design of these L-shaped frames incorporates a screen filled with ink. By scraping the ink, screen printing on the safety helmet is achieved. As the spacing of the L-shaped frames changes synchronously, it ensures the screen remains stretched. This significantly reduces the likelihood of wrinkles, thus guaranteeing the quality of the screen printing. The scraping mechanism primarily consists of a fixed frame, tightly secured to one side of the support frame's outer wall. This design ensures the stability of the scraping mechanism, allowing it to firmly maintain its predetermined position during printing. On the outer wall of the fixed frame, we also see a fixed shaft for secure connection. One end of a rocker arm is rotatably connected inside the fixed shaft. This design allows the scraping mechanism to be finely adjusted as needed during the printing process for more precise printing results. Additionally, a limiting ring is located on one side of the outer wall of the fixed frame. A sliding rod is slidably connected inside the limiting ring, and one end of an extension plate is fixedly connected inside the sliding rod. This design makes it easier to adjust the inner arc of the scraper, thereby increasing the contact area between the scraper and the outer wall of the helmet. A long shaft is fixedly connected to the other end of the extension plate, and a scraper frame is fixedly connected to one side of the outer wall of the long shaft. A fixed arc is fixedly connected inside the scraper frame, and a rotating arc is rotatably connected inside the fixed arc. Through this scraping mechanism, the inner arc of the scraper can be precisely adjusted when clamping and adjusting inside the helmet. This significantly increases the contact area when the scraper scrapes different helmet outer walls, thus improving the quality of screen printing. Simultaneously, this design also accelerates the ink buildup speed, further improving the printing effect.

[0019] This invention provides a screen printing device for the production of safety helmets. It has the following beneficial effects:

[0020] 1. The present invention allows for adjustment of the internal clamping spacing when the diameter of the safety helmet changes, by setting a rotating clamping mechanism, to prevent the safety helmet from being not securely fixed, thereby ensuring printing stability. Furthermore, the clamping positions at both ends of the screen can be changed during clamping adjustment, making the screen fit the outer wall of the safety helmet more closely. In addition, ink can be continuously added to the surface of the screen to avoid ink loss.

[0021] 2. The present invention, through the setting of the scraping mechanism, can adjust the inner arc of the scraper when it is clamped and adjusted inside the safety helmet, thereby increasing the contact area when the scraper scrapes the outer wall of different safety helmets, thus improving the printing quality of the screen and accelerating the accumulation speed of ink, thereby further improving the printing effect of the ink. Attached Figure Description

[0022] Figure 1 This is a perspective view of the screen printing equipment in this invention;

[0023] Figure 2 This is a diagram illustrating the screen printing equipment used in this invention.

[0024] Figure 3 This is a schematic diagram of the screen printing equipment in this invention;

[0025] Figure 4 This is a side view of the screen printing equipment in this invention;

[0026] Figure 5 This is a schematic diagram of the rotating clamping mechanism in this invention;

[0027] Figure 6 This is a schematic diagram of the scraping mechanism in this invention;

[0028] Figure 7 for Figure 6 Enlarged view of point A in the image;

[0029] Figure 8 for Figure 6 Enlarged view of point B in the image.

[0030] The components are as follows: 1. Support frame; 2. Fixed frame; 3. Support plate; 4. Servo motor; 5. Rotating shaft one; 6. Diagonal bar; 7. Limiting frame; 8. Slider; 9. Extension rod; 10. Rotating shaft two; 11. Pad; 12. Rotating plate; 13. Fixed shaft; 14. Rocker arm; 15. Limiting ring; 16. Groove; 17. Slide rod; 18. Extension plate; 19. Long shaft; 20. L-shaped frame; 21. Liquid tank; 22. Positioning ring; 23. Wire mesh; 24. Infusion tube; 25. Side extension tube; 26. Positioning plate; 27. Scraper; 28. Fixed arc; 29. ​​Rotating arc; 30. Synchronizing rod; 31. Rubber strip; 32. Spring. Detailed Implementation

[0031] 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.

[0032] Example:

[0033] Please see the appendix Figure 1 - Appendix Figure 8 This invention provides a screen printing device for the production of safety helmets, comprising:

[0034] Support frame 1, as the basic component of the overall device, is used to support and assemble various processing mechanisms and their subordinate structural components;

[0035] A rotating clamping mechanism, located inside the support frame 1, is used to securely clamp the safety helmet;

[0036] A synchronous adjustment mechanism is installed on one side of the outer wall of the support frame 1 and is used to synchronously adjust the position of the ink filaments;

[0037] The scraping mechanism, which is fixedly connected to the top of the support frame 1, is used to scrape the ink filaments on the outer wall of different safety helmets.

[0038] The rotating clamping mechanism includes a fixed frame 2, a support plate 3 is fixedly connected to the inner bottom of the fixed frame 2, a servo motor 4 is fixedly connected to one side of the outer wall of the support plate 3, a rotating plate 12 is fixedly connected to the output end of the servo motor 4, a rotating shaft 5 is fixedly connected to both ends of one side of the outer wall of the rotating plate 12, one end of a diagonal rod 6 is rotatably connected inside the rotating shaft 5, a limit frame 7 is fixedly connected to the outer wall of the servo motor 4, a slider 8 is slidably connected inside the limit frame 7, a spring 32 is fixedly connected to one side of the outer wall of the slider 8, the other end of the diagonal rod 6 is rotatably connected to the slider 8, an extension rod 9 is fixedly connected to one side of the outer wall of the slider 8, and a pad 11 is provided at the top of the extension rod 9;

[0039] The top end of the extension rod 9 is fixedly connected to the second pivot 10, and one side of the outer wall of the pad 11 is rotatably connected to the inside of the second pivot 10.

[0040] Specifically, after the servo motor 4 starts, it drives the rotating plate 12 to rotate. During this process, the movement of the rotating plate 12 drives the rotating shaft 5 to perform circular motion. This force is transmitted through the diagonal rod 6, thereby realizing the transmission of torque. Under the restriction of the limiting frame 7, the slider 8 slides in a limited position as the rotating plate 12 rotates. It is worth noting that the sliding directions of the two sliders 8 are opposite. When the sliders 8 slide, their distance gradually decreases. At this time, the spring 32 is compressed, causing it to be in a contracted state. As the gap between the sliders 8 continues to decrease until it reaches a certain level, the safety helmet can be placed on the pad 11. After the safety helmet is placed, the servo motor 4 will rotate in the opposite direction, restoring the system to its original state. As the spring 32 is no longer compressed, it will begin to return to its original length. This restoring force will push the slider 8 outward, causing the pad 11 to exert pressure on the inner wall of the safety helmet. In this way, the safety helmet is stably clamped. Throughout the process, the servo motor 4, the rotating plate 12, the rotating shaft 5, the diagonal rod 6, the limit frame 7, the slider 8, and the spring 32 work together to ensure the stability and safety of the safety helmet.

[0041] The synchronous adjustment mechanism includes a synchronous rod 30. One end of the synchronous rod 30 is fixedly connected to the outer wall of the slider 8, and the other end of the synchronous rod 30 is fixedly connected to an L-shaped frame 20. A positioning ring 22 is provided inside the L-shaped frame 20, and a wire mesh 23 is clamped inside the L-shaped frame 20 and the positioning ring 22.

[0042] Specifically, during the movement of slider 8, it drives the synchronizing rod 30 to slide smoothly. Crucially, this process alters the spacing between the two L-shaped frames 20. The unique design of the L-shaped frames 20 includes a screen 23 filled with ink. By scraping the ink, screen printing on the safety helmet can be achieved. As the spacing of the L-shaped frames 20 changes synchronously, it ensures that the screen 23 remains stretched. This significantly reduces the likelihood of wrinkles, thus guaranteeing the quality of the screen printing.

[0043] A liquid storage tank 21 is fixedly connected to one side of the outer wall of the L-shaped frame 20. The two liquid storage tanks 21 are connected by an infusion pipe 24. Multiple side extension pipes 25 are equidistantly opened on one side of the outer wall of the infusion pipe 24.

[0044] A positioning plate 26 is fixedly connected to the outer wall of the side extension tube 25, and a wire mesh 23 is set inside the positioning plate 26.

[0045] Specifically, the core component of the equipment is the infusion tube 24, which is responsible for transporting ink from the liquid tank 21 to the vicinity of the screen 23. In addition, the size and shape of the infusion tube 24 also need to be adjusted according to the actual printing requirements to ensure that the ink can flow smoothly to the screen 23. Secondly, the side extension tube 25 is a key component responsible for evenly dispersing the ink to one side of the outer wall of the screen 23. The design of the side extension tube 25 should enable it to disperse the ink within a minimal range, thereby reducing ink waste and improving coating efficiency. On this basis, the positioning plate 26 plays a role in limiting the position of the screen 23 to prevent ink spillage. The design of the positioning plate 26 should enable it to stably fix the screen 23, while allowing the screen 23 to have a certain amount of deformation space during the printing process to adapt to the ink coating requirements.

[0046] The scraping mechanism includes a fixed frame 2, which is fixedly connected to one side of the outer wall of the support frame 1. A fixed shaft 13 is fixedly connected to one side of the outer wall of the fixed frame 2. One end of a rocker arm 14 is rotatably connected inside the fixed shaft 13. A limit ring 15 is also fixedly connected to one side of the outer wall of the fixed frame 2. A slide rod 17 is slidably connected inside the limit ring 15. The other end of the rocker arm 14 is fixedly connected to one side of the outer wall of the slide rod 17. One end of an extension plate 18 is also fixedly connected inside the slide rod 17. A long shaft 19 is fixedly connected to the other end of the extension plate 18. A scraper frame 27 is fixedly connected to one side of the outer wall of the long shaft 19. A fixed arc 28 is fixedly connected inside the scraper frame 27. A rotating arc 29 is rotatably connected inside the fixed arc 28.

[0047] The same rubber strip 31 is fixedly connected to one side of the outer wall of multiple rotating arcs 29;

[0048] The inner wall of the limiting ring 15 is provided with a groove 16, and the slide rod 17 is slidably connected inside the limiting ring 15;

[0049] Specifically, the scraping mechanism is mainly composed of a fixed frame 2, which is tightly fixed to one side of the outer wall of the support frame 1. This design ensures the stability of the scraping mechanism, allowing it to be firmly held in the predetermined position during the printing process. On one side of the outer wall of the fixed frame 2, we also see a fixed shaft 13 that is fixedly connected. One end of a rocker arm 14 is rotatably connected inside the fixed shaft 13. This design allows the scraping mechanism to be finely adjusted as needed during the printing process to achieve a more precise printing effect. In addition, a limiting ring 15 is provided on one side of the outer wall of the fixed frame 2. A sliding rod 17 is slidably connected inside the limiting ring 15. One end of an extension plate 18 is fixedly connected inside the sliding rod 17. This design makes it easier to adjust the inner arc of the scraper, thereby increasing the contact area between the scraper and the outer wall of the safety helmet. The other end of the extension plate 18 is fixedly connected to a long shaft 19. A scraper frame 27 is fixedly connected to one side of the outer wall of the long shaft 19. A fixed arc 28 is fixedly connected inside the scraper frame 27. A rotating arc 29 is rotatably connected inside the fixed arc 28. Through the setting of the scraping mechanism, we can precisely adjust the inner arc of the scraper when clamping and adjusting inside the safety helmet. In this way, when the scraper scrapes the outer wall of different safety helmets, the contact area can be greatly increased, thereby improving the printing quality of the screen 23. At the same time, this design can also accelerate the ink buildup rate, further improving the printing effect.

[0050] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A screen printing apparatus for the production of safety helmets, characterised in that, include: The support frame (1) serves as the basic component of the overall device, used to support and assemble various processing mechanisms and their subordinate structural components; A rotating clamping mechanism is installed inside the support frame (1) to securely clamp the safety helmet; A synchronous adjustment mechanism is set on one side of the outer wall of the support frame (1) for synchronously adjusting the position of the ink filaments; The scraping mechanism is fixedly connected to the top of the support frame (1) and is used to scrape the ink filaments on the outer wall of different safety helmets. The rotating clamping mechanism includes a fixed frame (2), a support plate (3) is fixedly connected to the inner bottom of the fixed frame (2), a servo motor (4) is fixedly connected to one side of the outer wall of the support plate (3), a rotating plate (12) is fixedly connected to the output end of the servo motor (4), a rotating shaft (5) is fixedly connected to both ends of one side of the outer wall of the rotating plate (12), one end of a diagonal rod (6) is rotatably connected inside the rotating shaft (5), a limit frame (7) is fixedly connected to the outer wall of the servo motor (4), a slider (8) is slidably connected inside the limit frame (7), a spring (32) is fixedly connected to one side of the outer wall of the slider (8), the other end of the diagonal rod (6) is rotatably connected to the slider (8), an extension rod (9) is fixedly connected to one side of the outer wall of the slider (8), and a pad (11) is provided at the top of the extension rod (9). The synchronous adjustment mechanism includes a synchronous rod (30), one end of which is fixedly connected to the outer wall of the slider (8), and the other end of which is fixedly connected to an L-shaped frame (20). A positioning ring (22) is provided inside the L-shaped frame (20), and a wire mesh (23) is held between the L-shaped frame (20) and the positioning ring (22). The scraping mechanism includes a fixed frame (2), which is fixedly connected to one side of the outer wall of the support frame (1). A fixed shaft (13) is fixedly connected to one side of the outer wall of the fixed frame (2). One end of a rocker arm (14) is rotatably connected inside the fixed shaft (13). A limit ring (15) is also fixedly connected to one side of the outer wall of the fixed frame (2). A slide rod (17) is slidably connected inside the limit ring (15). The other end of the rocker arm (14) is fixedly connected to one side of the outer wall of the slide rod (17). One end of an extension plate (18) is also fixedly connected inside the slide rod (17). A long shaft (19) is fixedly connected to the other end of the extension plate (18). A scraper frame (27) is fixedly connected to one side of the outer wall of the long shaft (19). A fixed arc (28) is fixedly connected inside the scraper frame (27). A rotating arc (29) is rotatably connected inside the fixed arc (28).

2. A screen printing apparatus for the production of safety helmets according to claim 1, characterized in that, A liquid storage tank (21) is fixedly connected to one side of the outer wall of the L-shaped frame (20). The two liquid storage tanks (21) are connected by an infusion pipe (24). Multiple side extension pipes (25) are equidistantly opened on one side of the outer wall of the infusion pipe (24).

3. The screen printing equipment for producing safety helmets according to claim 2, characterized in that, The outer wall of the side extension tube (25) is fixedly connected to a positioning plate (26), and the wire mesh (23) is set inside the positioning plate (26).

4. The screen printing equipment for producing safety helmets according to claim 1, characterized in that, The same rubber strip (31) is fixedly connected to one side of the outer wall of the multiple rotating arcs (29).

5. A screen printing device for producing safety helmets according to claim 1, characterized in that, The inner wall of the limiting ring (15) is provided with a groove (16), and the slide rod (17) is slidably connected inside the limiting ring (15).

6. The screen printing equipment for producing safety helmets according to claim 1, characterized in that, The top end of the extension rod (9) is fixedly connected to the second rotating shaft (10), and one side of the outer wall of the pad (11) is rotatably connected to the inside of the second rotating shaft (10).

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