A powder accumulation prevention plastic spraying gun with air flow guiding function

Abstract

This utility model discloses an anti-powder-accumulation powder coating gun with airflow guiding function, belonging to the field of powder coating equipment technology. It includes: a powder coating gun body, with an air chamber, an air inlet pipe, and a powder pipe inside. One end of the powder coating gun body is connected to a connecting seat, and a mounting cap is movably inserted into the outside of the connecting seat. A nozzle is disposed inside the mounting cap, and a sealing gasket abuts between the nozzle and the connecting seat. A spiral-shaped guide groove is disposed inside the connecting seat, and two sets of sliding frames are slidably installed inside the connecting seat. A plug is fixedly installed on one side of each of the two sets of sliding frames. This design fully utilizes the vortex effect of the spiral airflow to keep the powder suspended and flowing inside the pipe, reducing the risk of powder deposition, ensuring a continuous and stable coating process, improving production efficiency, and achieving ideal coating results. This design significantly shortens the nozzle disassembly and assembly time, facilitates cleaning of powder accumulation inside the nozzle, replacement of worn parts, reduces equipment downtime, improves overall production efficiency, and reduces maintenance costs.

Description

Technical Field

[0001] This utility model relates to the field of powder coating equipment technology, and in particular to a powder coating gun with airflow guiding function to prevent powder accumulation. Background Technology

[0002] In modern industrial production, powder coating is widely used in many fields such as machinery manufacturing, automobiles, and home appliances due to its advantages such as beautiful coating, corrosion resistance, and strong adhesion. As the core equipment of the powder coating process, the performance of the powder coating gun directly affects the coating quality and production efficiency.

[0003] Existing methods for installing and removing spray gun nozzles are not convenient enough. The nozzle is usually fixed to the gun body with screws, which require tools to remove, making the process complicated and time-consuming. Most spray guns use a simple straight-tube airflow channel design, which makes it difficult for the gas to effectively encapsulate and guide the plastic powder when it is sprayed out, resulting in uneven powder dispersion and problems such as powder splashing and uneven coating thickness during the spraying process. Therefore, we propose a spray gun with airflow guiding function to prevent powder accumulation and solve this problem. Utility Model Content

[0004] The purpose of this invention is to provide a powder coating gun with airflow guiding function to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A powder-resistant spray gun with airflow guiding function includes: a spray gun body, wherein the spray gun body has an air chamber, an air inlet pipe, and a powder pipe inside; a connecting seat is connected to one end of the spray gun body; a mounting cap is movably inserted into the outside of the connecting seat; a nozzle is disposed inside the mounting cap; a sealing gasket abuts between the nozzle and the connecting seat; a spiral guide groove is disposed inside the connecting seat; two sets of sliding frames are slidably installed inside the connecting seat; a block is fixedly installed on one side of each of the two sets of sliding frames; a first return spring is fixedly installed on the other side of each of the two sets of sliding frames; sliders are slidably installed inside each of the two sets of sliding frames; a locking block is fixedly installed on the left side of each of the two sets of sliders; a second return spring is fixedly installed on the right side of each of the two sets of sliders; a connecting rod is fixedly installed on one side of each of the two sets of sliders; and a push handle is fixedly installed at one end of each of the two sets of connecting rods.

[0006] Preferably, the powder tube is disposed inside the spiral guide groove, and both the connecting seat and the powder tube are connected to the nozzle. The bottom of the powder coating gun body is provided with a handle, and the top of the powder coating gun body is provided with a hook. Two sets of the inserts are slidably installed on the outside of the mounting seat and movably inserted into the inner wall of the mounting cap. Two sets of the locking blocks are slidably installed on one side of the corresponding slide frame and movably inserted into the inside of the connecting seat. Two sets of the connecting rods are slidably installed on the outside of the connecting seat and the outside of the corresponding slide frame.

[0007] Preferably, the interior of the connecting seat is provided with two sets of sliding grooves, the two sets of sliding frames are slidably installed in the corresponding sliding grooves, and the other end of the two sets of return springs is fixedly installed on one side of the corresponding sliding groove.

[0008] Preferably, one end of each of the two sets of return springs is fixedly installed on the inner wall of the corresponding slide frame, the air inlet pipe and the powder pipe are both located inside the handle, and the outer side of the handle is provided with anti-slip texture.

[0009] Preferably, the mounting cap has two sets of slots inside, and the two sets of inserts are movably inserted into the corresponding slots.

[0010] Preferably, the interior of the connecting seat has two sets of slots, and the two sets of card blocks are movably inserted into the corresponding slots.

[0011] In this utility model, the anti-powder-accumulation spray gun with airflow guiding function has anti-slip texture on the handle at the bottom of the spray gun body, which not only makes it easy for the operator to hold, but also keeps it stable during the spraying process, improving the safety and comfort of operation; the hook at the top makes it convenient to hang and store the spray gun when not in use, and the sealing gasket placed between the connecting seat and the nozzle ensures a good seal between the connecting seat and the nozzle under the action of the mounting cap, preventing powder and gas leakage; The connecting seat has a spiral guide groove inside. When the gas in the gas storage chamber flows through the connecting seat, it flows along the spiral guide groove, forming a spiral airflow. At the same time, plastic powder enters through the powder tube, which is located inside the spiral guide groove. This allows the powder to fully contact the spiral airflow during the conveying process. Driven by the spiral airflow, the plastic powder achieves a good dispersion effect and is sprayed out of the nozzle in a uniform and precise direction and range. Through the cooperation of push handle, connecting rod, slider, sliding frame, insert block, locking block, and reset spring one and reset spring two, a double locking and quick disassembly between the connecting seat, nozzle, and mounting cap is achieved. The vortex effect of the spiral airflow is fully utilized to keep the powder in a suspended and flowing state in the tube, reducing the risk of powder deposition, ensuring a continuous and stable spraying process, improving production efficiency, and achieving ideal spraying results. This design significantly shortens the nozzle disassembly and assembly time, facilitates daily cleaning of powder accumulation inside the nozzle, replacement of worn parts, reduces equipment downtime, improves overall production efficiency, and reduces maintenance costs. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of an anti-powder-accumulation spray gun with airflow guiding function proposed in this utility model; Figure 2 This is a cross-sectional view of a powder-resistant spray gun with airflow guiding function proposed in this utility model. Figure 3 for Figure 2 A magnified view of part A in the middle; Figure 4 for Figure 2 A magnified view of part B in the middle section; Figure 5 This is a partial three-dimensional structural diagram of a powder coating gun with airflow guiding function proposed in this utility model.

[0013] In the diagram: 1. Powder coating gun body; 2. Hook; 3. Handle; 4. Air inlet pipe; 5. Powder pipe; 6. Connecting seat; 7. Mounting cap; 8. Nozzle; 9. Spiral guide groove; 10. Air chamber; 11. Sliding frame; 12. Insert block; 13. Return spring one; 14. Sliding groove; 15. Sliding block; 16. Locking block; 17. Connecting rod; 18. Push handle; 19. Return spring two; 20. Sealing gasket. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] Reference Figure 1-5A powder coating gun with airflow guiding function and anti-powder accumulation includes: a powder coating gun body 1, an air chamber 10, an air inlet pipe 4 and a powder pipe 5 inside the powder coating gun body 1, a connecting seat 6 connected to one end of the powder coating gun body 1, a mounting cap 7 movably inserted into the outside of the connecting seat 6, a nozzle 8 inside the mounting cap 7, a sealing gasket 20 abutting between the nozzle 8 and the connecting seat 6, a spiral guide groove 9 inside the connecting seat 6, two sets of sliding frames 11 slidably installed inside the connecting seat 6, a plug block 12 fixedly installed on one side of each of the two sets of sliding frames 11, a return spring 13 fixedly installed on the other side of each of the two sets of sliding frames 11, a slider 15 slidably installed inside each of the two sets of sliding frames 11, a locking block 16 fixedly installed on the left side of each of the two sets of sliders 15, a return spring 19 fixedly installed on the right side of each of the two sets of sliders 15, a connecting rod 17 fixedly installed on one side of each of the two sets of sliders 15, and a push handle 18 fixedly installed at one end of each of the two sets of connecting rods 17.

[0016] In this embodiment, the powder tube 5 is located inside the spiral guide groove 9. The connecting seat 6 and the powder tube 5 are both connected to the nozzle 8. The bottom of the spray gun body 1 is provided with a handle 3, and the top of the spray gun body 1 is provided with a hook 2. Two sets of inserts 12 are slidably installed on the outside of the mounting seat and movably inserted into the inner wall of the mounting cap 7. Two sets of locking blocks 16 are slidably installed on one side of the corresponding sliding frame 11 and movably inserted into the inside of the connecting seat 6. Two sets of connecting rods 17 are slidably installed on the outside of the connecting seat 6 and the outside of the corresponding sliding frame 11, which effectively improves the atomization effect of the powder, ensures the uniformity and high quality of the spraying, and achieves precise spraying.

[0017] In this embodiment, the interior of the connecting seat 6 is provided with two sets of sliding grooves 14, and two sets of sliding frames 11 are slidably installed in the corresponding sliding grooves 14. The other end of the two sets of return springs 13 is fixedly installed on one side of the corresponding sliding groove 14 to ensure the fitting accuracy between the components.

[0018] In this embodiment, one end of each of the two sets of reset springs 19 is fixedly installed on the inner wall of the corresponding slide frame 11. The air inlet pipe 4 and the powder pipe 5 are both installed inside the handle 3. The outer side of the handle 3 is provided with anti-slip texture to ensure the stability and reliability of the nozzle 8 installation.

[0019] In this embodiment, the installation cap 7 has two sets of slots inside, and the two sets of plugs 12 are movably inserted into the corresponding slots. The installation and disassembly operations are convenient and quick, reducing the difficulty of the operator's work and improving the efficiency of equipment maintenance and nozzle replacement 8.

[0020] In this embodiment, the connecting seat 6 has two sets of slots inside, and the two sets of locking blocks 16 are movably inserted into the corresponding slots, so as to conveniently and quickly disconnect the nozzle 8 from the connecting seat 6, and facilitate the cleaning, maintenance or replacement of the nozzle 8.

[0021] In this embodiment, during use, compressed gas enters the air chamber 10 inside the spray gun body 1 through the air inlet pipe 4. Since the connecting seat 6 is provided with a spiral guide groove 9, the gas will flow along the spiral guide groove 9 when it flows through the connecting seat 6, forming a spiral airflow. At the same time, plastic powder enters through the powder tube 5. The powder tube 5 is set inside the spiral guide groove 9, so that the powder can fully contact the spiral airflow during the conveying process. Under the drive of the spiral airflow, the plastic powder obtains a good dispersion effect and is sprayed out from the nozzle 8 in a uniform and precise direction and range, thereby achieving precise spraying and achieving the ideal spraying effect. The handle 3 at the bottom of the spray gun body 1 is provided with anti-slip texture, which not only makes it easy for operators to hold, but also keeps it stable during the spraying process, improving the safety and comfort of operation; the hook 2 at the top makes it convenient to hang and store the spray gun when not in use. By pushing the push handle 18, the connecting rod 17 and the slider 15 slide within the sliding frame 11, causing the locking block 16 to disengage from the slot of the connecting seat 6, while simultaneously compressing the second return spring 19. Pressing the push handle 18 relative to each other causes the connecting rod 17, slider 15, sliding frame 11, and insert block 12 to move relative to each other, compressing the first return spring 13 and causing the insert block 12 to be pulled out of the slot of the mounting cap 7, thereby releasing the connection between the mounting cap 7 and the connecting seat 6. This allows the nozzle 8 to be easily removed for cleaning or replacement. During installation, simply connect the nozzle 8 to the mounting cap 7. The sealing gasket 20 is placed between the connecting seat 6 and the nozzle 8, so that the connecting seat 6 and the nozzle 8 can achieve a good seal under the action of the mounting cap 7, preventing powder and gas leakage. The mounting cap 7 is inserted on the outside of the connecting seat 6, and the insert block 12 is aligned with the slot. The handle 3 is released. Under the elastic force of the return spring 13 and the return spring 2 19, the insert block 12 is inserted into the slot, and the locking block 16 is inserted into the slot to achieve double locking. This not only realizes the quick installation and removal of the nozzle 8, but also makes the double locking stable when the spray gun is used.

[0022] The above provides a detailed description of the anti-powder-accumulation spray gun with airflow guiding function provided by this utility model. Specific embodiments have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only intended to help understand the method and core idea of ​​this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A powder coating gun with airflow guiding function to prevent powder accumulation, characterized in that, include: The spray gun body (1) has an air chamber (10), an air inlet pipe (4), and a powder pipe (5) inside. One end of the spray gun body (1) is connected to a connecting seat (6). A mounting cap (7) is movably inserted into the outside of the connecting seat (6). A nozzle (8) is provided inside the mounting cap (7). A sealing gasket (20) abuts between the nozzle (8) and the connecting seat (6). A spiral guide groove (9) is provided inside the connecting seat (6). Two sets of sliding frames (11) are slidably installed inside the connecting seat (6). Each of the two sets of sliding frames (11) has a fixed insert (12) on one side, and a reset spring (13) on the other side. Each of the two sets of sliding frames (11) has a slider (15) slidably installed inside. Each of the two sets of sliders (15) has a locking block (16) fixedly installed on the left side. Each of the two sets of sliders (15) has a reset spring (19) fixedly installed on the right side. Each of the two sets of sliders (15) has a connecting rod (17) fixedly installed on one side. Each of the two sets of connecting rods (17) has a push handle (18) fixedly installed at one end.

2. The anti-powder-accumulation spray gun with airflow guiding function according to claim 1, characterized in that, The powder tube (5) is located inside the spiral guide groove (9). The connecting seat (6) and the powder tube (5) are connected to the nozzle (8). The bottom of the spray gun body (1) is provided with a handle (3). The top of the spray gun body (1) is provided with a hook (2). Two sets of the inserts (12) are slidably installed on the outside of the mounting seat and movably inserted into the inner wall of the mounting cap (7). Two sets of the clips (16) are slidably installed on one side of the corresponding slide frame (11) and movably inserted into the inside of the connecting seat (6). Two sets of the connecting rods (17) are slidably installed on the outside of the connecting seat (6) and the outside of the corresponding slide frame (11).

3. The anti-powder-accumulation spray gun with airflow guiding function according to claim 1, characterized in that, The connecting seat (6) has two sets of sliding grooves (14) inside. The two sets of sliding frames (11) are slidably installed in the corresponding sliding grooves (14). The other end of the two sets of reset springs (13) is fixedly installed on one side of the corresponding sliding groove (14).

4. The anti-powder-accumulation spray gun with airflow guiding function according to claim 1, characterized in that, One end of each of the two sets of reset springs (19) is fixedly installed on the inner wall of the corresponding slide frame (11). The air inlet pipe (4) and the powder pipe (5) are both located inside the handle (3). The outer side of the handle (3) is provided with anti-slip texture.

5. A powder-resistant spray gun with airflow guiding function according to claim 1, characterized in that, The mounting cap (7) has two sets of slots inside, and the two sets of plugs (12) are movably inserted into the corresponding slots.

6. A powder-resistant spray gun with airflow guiding function according to claim 1, characterized in that, The connecting seat (6) has two sets of slots inside, and the two sets of card blocks (16) are movably inserted into the corresponding slots.

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