A powder coating spray gun

Abstract

The utility model discloses a powder coating spray gun, including the gun body main part, the gun body main part includes the gun head casing, the gun body casing and the gun tail casing, the both sides of gun body casing are with gun head casing and gun tail casing snap fit installation, and the bottom detachable mounting of gun body casing has the gun stock main part, the gun body casing includes fixed casing and installation casing, and is provided with reset component between fixed casing and installation casing, is used for the quick separation work of both. The powder coating spray gun, when the installation casing and fixed casing are clamped, are provided with reset mechanism, and after the gun body casing is released from the location by the gun head casing and the gun tail casing, the reset mechanism can make the installation casing and fixed casing automatically separate work, reduces the time and labor intensity of manual disassembly, simultaneously, the operator also does not need to use the additional tool to forcibly separate the casing, reduces the risk of gun body casing damage.

Description

Technical Field

[0001] This utility model relates to the field of powder coating technology, specifically a powder coating spray gun. Background Technology

[0002] Powder coating is a highly efficient coating process widely used in various fields such as automobiles, home appliances, furniture, and machinery. It uses electrostatic spraying to evenly apply powder coating to the surface of a workpiece, forming a high-quality coating. During powder coating, the powder is sprayed onto the surface of the workpiece through a spray gun. In existing powder coating guns on the market, a built-in high-voltage electrostatic generator produces tens of thousands of volts of high-voltage static electricity during spraying, causing the powder particles to become electrostatically charged. The powder coating is fed into the spray gun via compressed air through a powder supply pipe. The high voltage generated by the high-voltage electrostatic generator at the front end of the spray gun causes corona discharge, creating a dense charge in its vicinity. When the powder is ejected from the nozzle, it forms charged coating particles, which are attracted to the grounded workpiece surface under the influence of the electric field, thus completing the spraying process. Because the internal components of a powder spray gun are generally located inside the gun body housing, traditional gun body housings rely on precise alignment of slots and clips for sealing. The gap between the upper and lower housings is very small, making subsequent maintenance and disassembly time-consuming for operators. Often, external tools are needed to pry the upper and lower housings apart, which can damage the clips. This results in a loose fit when re-engaging, affecting the normal operation of the spray gun and potentially causing air or powder leaks. Utility Model Content

[0003] The purpose of this utility model is to provide a powder coating spray gun to solve the problem mentioned in the background art of unstable disassembly and reassembly of the wall shell during maintenance of powder coating spray guns currently on the market.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a powder coating spray gun, comprising a gun body, the gun body comprising a gun head housing, a gun body housing, and a gun tail housing, the two sides of the gun body housing being respectively engaged and installed with the gun head housing and the gun tail housing, and a gun stock body being detachably installed at the bottom of the gun body housing, the gun body housing comprising a fixed housing and a mounting housing, and a reset component being provided between the fixed housing and the mounting housing for quick separation of the two, and internal components being provided inside the gun body housing.

[0005] Preferably, both the fixed housing and the mounting housing have a U-shaped cross-section and are interlocked with each other, with reset components provided at the top of both interlocking sides.

[0006] Preferably, the top of the stock body and the bottom of the fixed housing are interlocking detachable structures, and a powder inlet and an air inlet are provided at the bottom of the stock body.

[0007] Preferably, the internal components include an electrostatic generating unit, a powder tube unit, a corona discharge electrode, a jet stream regulator, and an air duct. The electrostatic generating unit is located inside the gun body housing. The powder tube unit extends to the nozzle position at the top of the gun head housing. The corona discharge electrode is located at the front end of the nozzle. The jet stream regulator surrounds the powder tube unit and the corona discharge electrode to adjust the jet shape and flow rate of the powder. The air duct surrounds the powder tube unit to deliver compressed air.

[0008] Preferably, the reset assembly includes a locking block, a reset spring, and a locking groove. The locking blocks are cylindrical and there are four of them. The tops of the four locking blocks are integrally installed with the four corners of the inner wall of the mounting housing.

[0009] Preferably, the slots are provided at the four apex positions of the fixed housing sidewall, and the slots and the engaging blocks engage accordingly. A return spring is provided inside the slots.

[0010] Preferably, both the fixed housing and the mounting housing have through-holes located on the lower part of their outer walls, and the limiting holes are fitted with locking pins.

[0011] Compared with the prior art, the beneficial effects of this utility model are: when the mounting housing and the fixed housing are engaged, the powder coating spray gun is equipped with a reset mechanism. After the gun body housing is released from the limit by the gun head housing and the gun tail housing, the reset mechanism can automatically separate the mounting housing and the fixed housing, reducing the time and labor intensity of manual disassembly. At the same time, the operator does not need to use additional tools to forcibly separate the housing, reducing the risk of damage to the gun body housing. The spray gun is equipped with limit pins and limit holes, which can limit the movement between the mounting housing and the fixed housing, facilitating quick and easy engagement of the nozzle housing and the tail housing, and ensuring that the entire spray gun is easy to assemble and disassemble. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the disassembled structure of this utility model; Figure 3 This is a schematic diagram of the structure of this utility model from below; Figure 4 This is a partially enlarged structural diagram of the reset component of this utility model; Figure 5This is a schematic diagram of the disassembled structure of the gun body shell and the gun tail shell of this utility model.

[0013] In the diagram: 1. Main body of the gun; 11. Gun head housing; 12. Gun body housing; 121. Fixed housing; 122. Mounting housing; 13. Gun tail housing; 2. Main body of the stock; 3. Internal components; 31. Electrostatic generating unit; 32. Powder tube unit; 4. Nozzle; 5. Locking block; 6. Return spring; 7. Locking groove; 8. Limiting hole; 9. Limiting pin. 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. 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.

[0015] Please see Figure 1-5 This utility model provides a technical solution: a powder coating spray gun, including a gun body 1, the gun body 1 including a gun head shell 11, a gun body shell 12 and a gun tail shell 13, the two sides of the gun body shell 12 are respectively engaged and installed with the gun head shell 11 and the gun tail shell 13, and a gun stock body 2 is detachably installed at the bottom of the gun body shell 12. The gun body shell 12 includes a fixed shell 121 and a mounting shell 122, and a reset component is provided between the fixed shell 121 and the mounting shell 122 for quick separation of the two. An internal component 3 is provided inside the gun body shell 12.

[0016] Both the fixed housing 121 and the mounting housing 122 have a U-shaped cross-section and are interlocked with each other. Reset components are provided at the top of both interlocking sides.

[0017] The internal component 3 includes an electrostatic generator 31, a powder tube unit 32, a corona discharge electrode, a jet adjuster, and an air duct. The electrostatic generator 31 is located inside the gun body housing 12. The powder tube unit 32 extends to the nozzle 4 at the top of the gun head housing 11. The corona discharge electrode is located at the front end of the nozzle 4. The jet adjuster surrounds the powder tube unit 32 and the corona discharge electrode and is used to adjust the shape and flow rate of the powder jet. The air duct surrounds the powder tube unit 32 and is used to deliver compressed air.

[0018] This application provides a powder coating spray gun with a reset component. Specifically, when the spray gun is working, the electrostatic generator 31 in the internal component 3 generates tens of thousands of volts of high-voltage static electricity, causing the powder particles to carry static charge. The powder coating is sent into the spray gun by compressed air through the powder tube unit. A high voltage generated by a high-voltage electrostatic generator is set at the nozzle of the spray gun. Due to the discharge of the corona discharge electrode, a dense charge is generated in its vicinity. When the powder is discharged from the nozzle 4 at the top of the nozzle, it forms charged coating particles. Under the action of the electric field force, the charged powder particles are adsorbed onto the grounded workpiece surface, completing the spraying work. After the spraying is completed, when it is necessary to inspect the internal components 3, the gun head housing 11 and gun tail housing 13 are separated from the gun body housing 12. At this time, the reset component between the fixed housing 121 and the mounting housing 122 will automatically reset, so that the fixed housing 121 and the mounting housing 122 are separated from each other. This allows for quick inspection of the internal components 3 inside the fixed housing 121 and the mounting housing 122. After the inspection is completed, the fixed housing 121 and the mounting housing 122 are engaged again, and then the gun head housing 11 and the gun tail housing 13 are engaged again.

[0019] Among them, according to Figure 3 As shown, the top of the stock body 2 and the bottom of the fixed housing 121 are interlocking disassembly structures. A powder inlet and an air inlet are provided at the bottom of the stock body 2. The powder inlet and air inlet can be easily connected to external powder pipes and air pipes to achieve the purpose of continuous powder and air supply.

[0020] As a further preferred embodiment, according to Figure 4 and Figure 5 As shown, the reset assembly includes a locking block 5, a reset spring 6, and a locking groove 7. The locking block 5 is cylindrical and there are four of them. The tops of the four locking blocks 5 are integrally installed with the four corners of the inner wall of the mounting housing 122.

[0021] The slots 7 are provided at the four top corners of the side wall of the fixed housing 121, and the slots 7 and the engaging blocks 5 are engaged accordingly. A return spring 6 is provided inside the slots 7.

[0022] Both the fixed housing 121 and the mounting housing 122 have through-holes 8 on their lower outer walls, and the limiting holes 8 have locking pins 9 inside.

[0023] In this application, since the head housing 11 and tail housing 13 protrude from the outer sides of the body housing 12, their protruding design facilitates force application by the operator during disassembly, allowing for quick disassembly. After separating the head housing 11 and tail housing 13 from the body housing 12, the operator only needs to pull the limiting pin 9 out of the limiting hole 8. Then, the return spring 6 inside the slot 7 will reset, pushing the locking block 5 outward. Since the top of the locking block 5 is fixedly connected to the mounting housing 122, the mounting housing 122 will move upward and separate from the fixed housing 121. Thus, the operator can easily separate the mounting housing 122 from the fixed housing 121, completing the disassembly and maintenance work. Subsequently, during installation, simply engage the limiting pin 9 with the limiting hole 8 again to position the mounting housing 122 and the fixing housing 121, and then engage the head housing 11 and tail housing 13 on both sides.

[0024] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0025] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A powder coating spray gun, comprising a gun body (1), characterized in that, The main body of the gun (1) includes a gun head shell (11), a gun body shell (12) and a gun tail shell (13). The two sides of the gun body shell (12) are respectively engaged with the gun head shell (11) and the gun tail shell (13). The bottom of the gun body shell (12) is detachably installed with a stock body (2). The gun body shell (12) includes a fixed shell (121) and a mounting shell (122). A reset component is provided between the fixed shell (121) and the mounting shell (122) for quick separation. An internal component (3) is provided inside the gun body shell (12).

2. A powder coating spray gun according to claim 1, characterized in that: The fixed housing (121) and the mounting housing (122) are both U-shaped in cross section and are interlocked with each other. Reset components are provided at the top of both sides where they are interlocked.

3. A powder coating spray gun according to claim 2, characterized in that: The top of the stock body (2) and the bottom of the fixed housing (121) are interlocking disassembly structures, and a powder inlet and an air inlet are provided at the bottom of the stock body (2).

4. A powder coating spray gun according to claim 1, characterized in that: The internal components (3) include an electrostatic generator (31), a powder tube unit (32), a corona discharge electrode, a jet regulator, and an air duct. The electrostatic generator (31) is located inside the gun body housing (12). The powder tube unit (32) extends to the nozzle (4) at the top of the gun head housing (11). The corona discharge electrode is located at the front end of the nozzle (4). The jet regulator surrounds the powder tube unit (32) and the corona discharge electrode and is used to adjust the jet shape and flow rate of the powder. The air duct surrounds the powder tube unit (32) and is used to transport compressed air.

5. A powder coating spray gun according to claim 2, characterized in that: The reset assembly includes a locking block (5), a reset spring (6), and a locking groove (7). The locking block (5) is cylindrical and has four parts. The tops of the four locking blocks (5) are integrally installed with the four corners of the inner wall of the mounting housing (122).

6. A powder coating spray gun according to claim 5, characterized in that: The slots (7) are provided at the four corners of the side wall of the fixed housing (121), and the slots (7) and the engaging blocks (5) engage accordingly. A return spring (6) is provided inside the slots (7).

7. A powder coating spray gun according to claim 6, characterized in that: Both the fixed housing (121) and the mounting housing (122) have through-hole (8) at the lower part of their outer walls, and the limiting hole (8) has a locking pin (9) inside.

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