Anti-blocking spray gun for steel marking

Abstract

The utility model relates to the technical field of steel marking equipment, and discloses an anti-blocking spray gun for steel marking, which comprises a moving platform, a spray gun is mounted on the moving platform, a support is arranged around the spray gun, a moisturizing device is mounted on the support, the spray gun comprises a moving needle, an adjusting screw rod and an atomizing cap, and the atomizing cap is mounted on the moving needle. The moisturizing device comprises a first ejector rod, the first ejector rod can abut against a movable needle to move in the direction of the adjusting screw, the movable needle can block a spraying opening of the atomization cap, the movable platform drives the spraying gun to apply a Newton force to the moisturizing device, the acting force, capable of counteracting the spraying gun, of the moisturizing device is b Newton, a is larger than b, and a is larger than b. The first moisture preservation in the spray gun is achieved by plugging the first ejector rod into the spray outlet, so that the problems that paint is prone to being attached to the surface of the spray nozzle, when the paint is solidified, the spray gun cannot spray out the paint in the gun body, and the gun needle is limited in length and cannot pierce the solidified paint at the spray nozzle are solved.

Description

Technical Field

[0001] This utility model relates to the technical field of steel marking equipment, and in particular to a spray gun for anti-clogging steel marking. Background Technology

[0002] The working principle of a spray gun is mainly to use compressed air to atomize paint into tiny droplets, which are then applied to the steel surface by the airflow. Compared with traditional manual painting, spray gun marking is more efficient, producing more detailed, smooth, and uniform markings. Spray guns not only improve marking efficiency but also ensure the uniformity and quality of the coating. The use of spray guns is particularly advantageous in steel surface treatment.

[0003] According to the description of an anti-clogging spray gun disclosed on the patent website (authorization announcement number: CN214975005U), "the gun body has a piston chamber for accommodating the piston, the compression spring is disposed in the piston chamber and located between the piston and the fine-tuning base; the nozzle corresponds to the gun needle and the front end of the gun needle passes into the nozzle, the nozzle also has an oil passage arranged coaxially with the gun needle, the oil passage supplies marking material to the nozzle; the gun body is also provided with an oil inlet channel and an oil return channel of the same diameter, the oil return channel is opened at the lower end of the gun body and extends vertically upward and intersects the end of the oil passage, the other end of which connects to the outside of the gun body, the oil inlet channel is opened on one side of the gun body and communicates with the end of the oil passage."

[0004] Regarding the above description, the applicant believes the following issues exist:

[0005] In use, this utility model has several drawbacks. The nozzle corresponds to the needle, and the tip of the needle penetrates the nozzle. The nozzle also has an oil passage coaxial with the needle, which supplies marking material to the nozzle. Paint easily adheres to the nozzle surface. When the paint solidifies, the spray gun does not spray the paint out of the gun body. The needle's length is limited and cannot pierce the solidified paint at the nozzle. Therefore, an improved, anti-clogging steel marking spray gun is needed to solve these problems. Utility Model Content

[0006] To overcome the problem that paint easily adheres to the nozzle surface, and the spray gun will not spray the paint out when the paint solidifies, while the needle length is limited and cannot pierce the solidified paint at the nozzle.

[0007] The technical solution of this utility model is as follows: a spray gun for anti-clogging steel marking, comprising a movable platform, on which a spray gun is mounted, and a support is provided around the spray gun. A moisturizing device is mounted on the support. The spray gun includes a moving needle, an adjusting screw, and an atomizing cap. The moisturizing device includes a top rod, which can push the moving needle to move towards the adjusting screw. The moving needle can block the spray outlet of the atomizing cap. The movable platform drives the spray gun to apply a force of 'a' Newtons to the moisturizing device, and the moisturizing device can react with a force of 'b' Newtons to the spray gun, where 'a' > 'b'.

[0008] Preferably, after using the spray gun, timely moisturizing of the atomizing cap can effectively prevent the paint at the atomizing cap from solidifying and clogging. The first moisturizing is achieved by inserting the push rod into the spray outlet. In order to make the push rod fit tightly against the moving needle, a spring applies a force b to the push rod. The applied force b is used entirely to hold the moving needle inside the spray gun. In order to prevent the moving platform from being deflected by the force, the moving platform applies a force a to the spray gun. a needs to be greater than b. The specific value of b is preferably one-third of the length of the spring compression.

[0009] Preferably, the moisturizing device further includes a housing. A mounting base is provided on the inner wall of the housing, away from the spray gun. A second push rod is threaded onto the mounting base. The second push rod has a cavity coaxial with itself. A spring and a first push rod can be placed coaxially within the cavity. The first push rod includes a retaining edge. The spring can press against the retaining edge, extending the first push rod away from the mounting base. The second push rod has an extension hole on its side away from the mounting base. On the first push rod, the side in contact with the spring and the retaining edge cannot extend out of the extension hole. The spring exerts a force on the first push rod because the spring inside the cavity presses against the first push rod. The first push rod, thanks to the retaining edge, is not pushed out of the extension hole, thus the first push rod is elastically fixed within the cavity.

[0010] Preferably, the second top rod is formed by stacking and printing. The side of the second top rod away from the mounting base is provided with a sealing groove. By stacking and printing, more types of sealing groove structures can be printed according to requirements to achieve different types of sealing effects.

[0011] Preferably, the sealing groove has a superior arc structure in its cross section, and the sealing ring can be placed inside the sealing groove. Here, the sealing groove has a superior arc structure, which refers to an arc larger than a semicircle. The superior arc structure can accommodate more volume of the sealing ring and prevent the sealing ring from falling out of the sealing groove.

[0012] Preferably, the spray gun includes a spray gun rod, and the outer shell can fit the spray gun rod to completely cover the atomizing cap, thereby achieving a second layer of moisturization by covering the atomizing cap with the outer shell.

[0013] Preferably, the mobile platform is a robotic arm. In actual production, the mobile platform can be a robotic arm, which has better alignment accuracy.

[0014] Preferably, the mobile platform is an XY-axis moving module. The mobile platform can also be an XY-axis moving module, which can save production costs compared to a robotic arm and can be applied to environments where the alignment accuracy of steel markings is not required.

[0015] The beneficial effects of this utility model are:

[0016] 1. After using the spray gun, timely moisturizing of the atomizing cap can effectively prevent the paint at the atomizing cap from solidifying and clogging. The first moisturizing in the spray gun is achieved by inserting the push rod into the spray nozzle. In order to make the push rod fit tightly against the moving needle, a spring applies a force b to the push rod. The applied force b is used entirely to hold the moving needle in the spray gun. By blocking the spray nozzle, the air at the spray nozzle is prevented from solidifying the paint at the spray nozzle. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a partially enlarged schematic diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the edge-blocking structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the sealing groove structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the outer shell of this utility model in use.

[0022] Explanation of reference numerals in the attached drawings: 1. Moving platform; 2. Spray gun; 21. Moving needle; 22. Adjusting screw; 23. Atomizing cap; 24. Spray gun rod; 231. Spray outlet; 3. Support; 4. Humidification device; 41. Top rod one; 411. Side guard; 42. Outer shell; 43. Mounting base; 44. Top rod two; 441. Cavity; 442. Spring; 443. Top extension hole; 444. Sealing groove; 445. Sealing ring. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please see Figures 1-5This utility model provides an embodiment: a spray gun for anti-clogging steel marking, including a movable platform 1, on which a spray gun 2 is mounted, and a support 3 is provided around the spray gun 2. A moisturizing device 4 is mounted on the support 3. The spray gun 2 includes a moving needle 21, an adjusting screw 22, and an atomizing cap 23. The moisturizing device 4 includes a top rod 41, which can push the moving needle 21 to move towards the adjusting screw 22. The moving needle 21 can block the spray outlet 231 of the atomizing cap 23. The movable platform 1 drives the spray gun 2 to apply a force of 'a' Newtons to the moisturizing device 4, and the moisturizing device 4 can react with a force of 'b' Newtons to the spray gun 2, where 'a' > 'b'. After using the spray gun 2, timely moisturizing of the atomizing cap 23 can effectively prevent the paint at the atomizing cap 23 from solidifying and clogging. The first moisturizing is achieved by inserting the push rod 41 into the spray outlet 231. In order to make the push rod 41 fit tightly against the moving needle 21, a spring 442 applies a force b to the push rod 41. The applied force b is used entirely to hold the moving needle 21 inside the spray gun 2. In order to prevent the moving platform 1 from being deflected by the force, the moving platform 1 applies a force a to the spray gun 2. a needs to be greater than b. The specific size of b should be one-third of the length of the spring 442 compressed.

[0025] Please see Figures 1-4 In this embodiment, the moisturizing device 4 further includes a housing 42. On the inner wall of the housing 42, on the side away from the spray gun 2, there is a mounting base 43. The mounting base 43 is threadedly connected to a second push rod 44. The second push rod 44 has a cavity 441 coaxial with the second push rod 44. The cavity 441 can coaxially place a spring 442 and a first push rod 41. The first push rod 41 includes a retaining edge 411. The spring 442 can push the first push rod 41 away from the mounting base 43 by pressing against the retaining edge 411. The second push rod 44 has an extension hole 443 on the side away from the mounting base 43. On the first push rod 41, the side that contacts the spring 442 and the retaining edge 411 cannot extend out of the extension hole 443. The spring 442 applies force to the push rod 41 because the spring 442 inside the cavity 441 holds the push rod 41 in place. Thanks to the retaining edge 411, the push rod 41 is not pushed out of the extension hole 443, thus the push rod 41 is elastically and fixedly fixed inside the cavity 441. The second push rod 44 is formed by stacking and printing. A sealing groove 444 is provided on the side of the second push rod 44 away from the mounting base 43. Stacking and printing can produce more types of sealing groove 444 structures to achieve different sealing effects. The sealing groove 444 has a superior arc structure in its cross-section, and a sealing ring 445 can be placed inside. Here, the sealing groove 444 has a superior arc structure; a superior arc refers to an arc larger than a semicircle. This superior arc structure can accommodate more volume of the sealing ring 445, preventing the sealing ring 445 from falling out of the sealing groove 444.

[0026] Please see Figures 4-5 In this embodiment, the spray gun 2 includes a spray gun rod 24, and the outer shell 42 can fit snugly against the spray gun rod 24 to completely cover the atomizing cap 23. The second layer of humidification is achieved by covering the atomizing cap 23 with the outer shell 42. The moving platform 1 is a robotic arm; in actual production, the moving platform 1 can be a robotic arm, which offers better alignment accuracy. The moving platform 1 is an XY-axis moving module, but it can also be an XY-axis moving module, which saves production costs compared to a robotic arm and can be applied to steel marking environments where alignment accuracy is not as high.

[0027] When in operation, the main body of the spray gun 2 is based on existing technology. Here is a brief introduction to the main components and principles of the spray gun 2: The spray gun rod 24 is the main structure of the spray gun 2, with paint pipelines and compressed air pipelines distributed inside. The paint and compressed air are controlled by the pump cabinet. The spray gun 2 has mounting screw holes on the housing, and the spray gun 2 is installed on the moving platform 1 by screws. The adjusting screw 22 includes a screw and a locking nut, which can adjust the amount of paint sprayed by the spray gun 2. First, loosen the locking nut, and use an open-end wrench to adjust the amount of paint sprayed by the spray gun 2. Clockwise increases the amount of paint, and counterclockwise decreases the amount of paint. After adjusting to the correct position, tighten the locking nut. The moving needle 21 consists of a needle rod, piston, seals, etc. The needle rod is connected to the piston through the piston cover and elastic element. According to the signal from the electrical controller, the solenoid valve is controlled to open and close to release compressed air. The compressed air pushes the piston rod up and down, thereby moving the needle rod up and down. The tip of the moving needle 21 cooperates with the atomizing cap 23, and the paint is sprayed out through the atomizing cap 23. A suitable seal is installed at the corresponding position of the moving needle 21 to seal the compressed air, allowing the piston to work normally; Atomizing cap 23: The spray gun rod 24 has a dedicated compressed air pipeline. Compressed air at a certain pressure passes through the fixed pipeline and atomizing cap 23, mixing with paint and spraying out, mixing the paint and atomized gas into a mist, which is sprayed onto the surface of the object to be sprayed. The thickness of the strokes can be adjusted by adjusting the atomization pressure; Sealing components: Seal all parts of the spray gun 2 to prevent paint and compressed air leakage. The spray gun 2 here is controlled by an electrical signal, specifically compressed air. After the spray gun 2 marks the steel, the moving platform 1 will move the spray gun 2 to the area of ​​the moisturizing device 4. The moving platform 1's location of the moisturizing device 4 is controlled by a programmable controller. The moving platform 1 will then align the spray gun 2 with the moisturizing device 4. Alignment is achieved through corresponding photoelectric sensors on the bracket 3 and the moving platform 1. Once aligned, the moving platform 1 will push the spray gun 2 into the moisturizing device 4. During this process, the atomizing cap 23 will first enter the cavity 441, and then the spray outlet 231 will be inserted by the push rod 41. During insertion, the moving needle 21 will... When the push rod 41 is pressed down, the spring 442 will be compressed. When the spring 442 is compressed to two-thirds of its original length, the moving platform 1 will stop pushing. At this time, the spray nozzle 231 is blocked by the push rod 41. At the same time, the outer shell 42 completely covers the atomizing cap 23 to prevent the paint at the spray nozzle 231 from evaporating and solidifying. When the spray gun 2 needs to mark the next piece of steel, the moving platform 1 will move the spray gun 2 out of the moisturizing device 4. The push rod 41 will be pushed out again by the spring 442. After the spray gun 2 is separated from the moisturizing device 4, the moving platform 1 will move the spray gun 2 to the appropriate position to mark the steel.

[0028] Through the above steps, timely moisturizing of the atomizing cap 23 after use of the spray gun 2 can effectively prevent the paint at the atomizing cap 23 from solidifying and prevent clogging. The first moisturizing in the spray gun 2 is achieved by inserting the top rod 41 into the spray outlet 231, which solves the problem that paint easily adheres to the nozzle surface, and when the paint solidifies, the spray gun 2 will not spray the paint inside the gun body, while the gun needle has a limited length and cannot pierce the solidified paint at the nozzle.

Claims

1. A clogging-preventing steel marking spray gun comprising a moving platform (1) on which a spray gun (2) is installed, characterized in that: The spray gun (2) is provided with a support (3), a moisturizing device (4) is installed on the support (3), the spray gun (2) comprises a moving needle (21), an adjusting screw (22) and an atomizing cap (23), the moisturizing device (4) comprises a top rod one (41), the top rod one (41) can push the moving needle (21) to move towards the adjusting screw (22), the moving needle (21) can block the spray outlet (231) of the atomizing cap (23), the moving platform (1) drives the spray gun (2) to apply a force of a newton to the moisturizing device (4), the moisturizing device (4) can counteract the force of the spray gun (2) by b newtons, and a>b.

2. The anti-clogging steel marking spray gun according to claim 1, characterized in that: The moisturizing device (4) further comprises a shell (42), an installation seat (43) is arranged on the inner wall of the shell (42) away from the spray gun (2), a top rod two (44) is threadedly connected to the installation seat (43), the top rod two (44) is internally provided with a cavity (441) coaxial with the top rod two (44), a spring (442) and the top rod one (41) can be coaxially arranged in the cavity (441), the top rod one (41) comprises a stop edge (411), the spring (442) can push the stop edge (411) to extend the top rod one (41) away from the installation seat (43), and the top rod two (44) is provided with an extension hole (443) away from the installation seat (43), and the side of the top rod one (41) in contact with the spring (442) cannot extend out of the extension hole (443).

3. The anti-clogging steel marking spray gun according to claim 2, characterized in that: The top rod two (44) is formed by stacking, and the top rod two (44) is provided with a sealing groove (444) away from the installation seat (43).

4. The clog resistant steel identification spray gun of claim 3, wherein: The sealing groove (444) has an arc structure in cross section, and a sealing ring (445) can be arranged in the sealing groove (444).

5. The anti-clogging steel marking spray gun according to claim 2, wherein: The spray gun (2) comprises a spray gun rod (24), and the shell (42) can completely cover the atomizing cap (23) by being attached to the spray gun rod (24).

6. The anti-clogging steel identification spray gun according to claim 5, characterized in that: The moving platform (1) is a mechanical arm.

7. The anti-clogging steel marking spray gun according to claim 5, characterized in that: The moving platform (1) is an XY-axis moving module.

Images