A powder gun busbar

Abstract

The utility model belongs to powder spray gun technical field especially relates to a kind of powder spray gun busbar, comprising: busbar main body, the both ends of busbar main body are provided with body front part and body tail part, the inner chamber of body tail part is provided with powder delivery channel and electrode needle base outlet, the powder delivery channel is communicated with electrode needle base outlet, the upper end of body tail part is provided with high-pressure module installation channel, high-pressure module installation channel extends to the inner chamber of body front part, the lower end of body tail part is provided with purging gas channel, the purging gas channel is communicated with electrode needle base outlet, one end of purging gas channel is provided with purging air pipe installation thread, compared with prior art, the utility model does not need additional wiring or fixed step, reduces process complexity, solves the insulation failure or discharge problem caused by creeping, can clean electrode needle, convenient to use.

Description

Technical Field

[0001] This utility model belongs to the field of powder spray gun technology, and in particular relates to a powder spray gun manifold. Background Technology

[0002] A powder spray gun is a device specifically designed for powder coating. It uses electrostatic adsorption to evenly spray powder coating onto the surface of a workpiece, forming a strong and durable coating. Its core function is to replace traditional liquid coatings, providing a more efficient, environmentally friendly, and high-quality surface treatment.

[0003] However, existing technologies have the following problems when used: The internal air and electrical circuits of existing powder spray guns are typically composed of multiple discrete parts and connectors, which have the following drawbacks: 1. Complex structure: Numerous parts and joints, and complicated assembly process; 2. Poor reliability: Multiple connection interfaces pose a risk of leakage. Additional connectors increase the risk of creepage under high voltage conditions, meaning that high voltage may form a path along dust or moisture on the interface surface, leading to insulation failure or discharge. 3. Difficult to maintain: The internal space is cramped, making disassembly and cleaning inconvenient. Utility Model Content

[0004] The purpose of this utility model is to address the aforementioned technical problems by providing a powder spray gun manifold, comprising: The main body of the manifold has a front part and a tail part at both ends. The inner cavity of the tail part has a powder conveying channel and an electrode needle base spray outlet. The powder conveying channel is connected to the electrode needle base spray outlet. The upper end of the tail part has a high-voltage module installation channel that extends to the inner cavity of the front part. The lower end of the tail part has a purge air channel that is connected to the electrode needle base spray outlet. One end of the purge air channel has a purge air pipe mounting thread. The powder conveying channel and the electrode needle base nozzle are integrated and connected in the inner cavity of the tail of the main body of the manifold. The high-voltage module installation channel extends from the upper end of the tail of the main body to the inner cavity of the front of the main body, forming an integrated assembly channel for the high-voltage module and the electrode needle. The purge gas channel is pre-formed at the lower end of the tail of the main body, and the air pipe is connected to the port of the purge gas channel through the purge air pipe installation thread.

[0005] Furthermore, the main body of the busbar is integrally molded with PBT material from the front and rear parts of the main body.

[0006] Furthermore, a powder tube mounting hole is provided at one end of the tail of the main body, and the powder tube mounting hole is connected to the powder conveying channel.

[0007] Furthermore, a powder diffusion channel is provided at one end of the powder conveying channel, and an inclined portion is provided on the side wall of the powder diffusion channel.

[0008] Furthermore, a weight-reduction area is provided on the outer side wall of the tail of the body, and a concave portion is provided in the inner cavity of the weight-reduction area.

[0009] Furthermore, a front nozzle is provided at one end of the front part of the main body.

[0010] Furthermore, the front nozzle is provided with a connecting groove, which is connected to the high-pressure module installation channel.

[0011] Furthermore, the lower end of the front nozzle is connected to the purge gas channel.

[0012] Compared with the prior art, the powder spray gun manifold of this utility model has the following advantages: 1. Reduced number of parts and connectors: The three major functions are integrated into a single part, eliminating the need for separate connectors for the electrode gas path. At the same time, the manifold body does not require press-fit metal parts, significantly reducing the total number of parts and improving assembly efficiency: During assembly, only the high-voltage module with conductive spring needs to be pushed towards the manifold, and the spring completes the electrical connection. No additional wiring or fixing steps are required, reducing process complexity.

[0013] 2. Reduced leakage and creepage risk: Eliminating independent connectors reduces the number of connection interfaces, reducing leakage risk at the source; at the same time, the use of PBT insulation body and metal-free embedded structure shortens the high-voltage creepage path and solves the problem of insulation failure or discharge caused by creepage. 3. Simpler internal space: The busbar body has removed unnecessary metal parts, resulting in a pure structure with no crowded internal components. This provides ample space for disassembly and allows for cleaning of the electrode needles through the purge air channel, making it convenient to use. Attached Figure Description

[0014] Figure 1 This is a first-view schematic diagram of the busbar of this utility model; Figure 2 This is a first-view cross-sectional view of the busbar of this utility model; Figure 3 This is a second-view schematic diagram of the busbar of this utility model; Figure 4 This is a second-view cross-sectional view of the busbar of this utility model.

[0015] The markings in the diagram are as follows: 1. Main body of the manifold; 2. Front part of the main body; 3. Tail part of the main body; 4. Powder pipe mounting hole; 5. Powder conveying channel; 6. Powder diffusion channel; 7. Electrode needle base nozzle; 8. Weight reduction area; 9. High voltage module mounting channel; 10. Purging air pipe mounting thread; 11. Purging air channel; 12. Inclined part; 13. Front nozzle; 14. Concave part; 15. Connecting groove. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0017] It should be noted that all directional and positional terms used in this utility model, such as "up," "down," "left," "right," "front," "back," "vertical," "horizontal," "inner," "outer," "top," "lower," "lateral," "longitudinal," and "center," are only used to explain the relative positional relationships and connection arrangements between components in a specific state (as shown in the accompanying drawings). They are merely for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, descriptions involving "first," "second," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0018] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0020] like Figures 1-4 As shown, a powder spray gun manifold includes: The main body of the manifold 1 has a front part 2 and a tail part 3 at both ends. The inner cavity of the tail part 3 is provided with a powder conveying channel 5 and an electrode needle base spray outlet 7. The powder conveying channel 5 is connected to the electrode needle base spray outlet 7. The upper end of the tail part 3 is provided with a high-voltage module installation channel 9, which extends into the inner cavity of the front part 2. The lower end of the tail part 3 is provided with a purge air channel 11, which is connected to the electrode needle base spray outlet 7. One end of the purge air channel 11 is provided with a purge air pipe installation thread 10. Among them, the powder conveying channel 5 and the electrode needle base spray outlet 7 are integrated and connected in the inner cavity of the tail 3 of the main body of the manifold 1. The high-voltage module installation channel 9 extends from the upper end of the tail 3 to the inner cavity of the front 2 of the main body, forming an integrated assembly channel for the high-voltage module and the electrode needle. The purge gas channel 11 is pre-formed at the lower end of the tail 3 of the main body, and the air pipe is connected to the port of the purge gas channel 11 through the purge air pipe installation thread 10.

[0021] As a preferred example of this utility model, the powder conveying channel 5 in the inner cavity of the tail section 3 of the main body and the electrode needle base spray outlet 7 are designed to be integrated and connected to avoid powder accumulation at the joint and blockage, and prevent powder leakage. The high-voltage module installation channel 9 at the upper end of the tail section 3 extends from the tail to the inner cavity of the front section 2 of the main body, forming an integrated assembly channel that runs through the head and tail of the main body 1 of the manifold, providing a positioning and installation space for the high-voltage module. The purge air channel 11 at the lower end of the tail section 3 is pre-formed, and the purge air pipe installation thread 10 at one end can realize the connection between the air pipe and the purge air channel 11, so that the purge air can be delivered to the electrode needle base spray outlet 7, and the electrode needle is installed in the electrode needle base spray outlet 7.

[0022] In the example of this application, the main body 1 of the busbar block, the front part 2 of the main body, and the rear part 3 of the main body are all integrally molded from PBT material.

[0023] As a preferred example of this utility model, PBT material itself has insulating properties, which can adapt to the high-pressure environment when the powder spray gun is working, avoiding the risk of leakage. At the same time, its good temperature resistance and mechanical strength can withstand certain temperatures and external impacts generated during the spraying process, extending the service life of the busbar and ensuring its long-term stable adaptation to the working requirements of the powder spray gun.

[0024] In the example of this application, a powder tube mounting hole 4 is provided at one end of the tail portion 3 of the body, and the powder tube mounting hole 4 is connected to the powder conveying channel 5.

[0025] As a preferred example of this utility model, when assembling the powder tube, the powder tube can be directly connected to the powder conveying channel 5 through the powder tube mounting hole 4, thereby ensuring that the powder tube can continuously and stably supply powder to the powder conveying channel 5, providing a foundation for the stability of subsequent spraying operations.

[0026] In the example of this application, a powder diffusion channel 6 is provided at one end of the powder conveying channel 5, and an inclined portion 12 is provided on the side wall of the powder diffusion channel 6.

[0027] As a preferred example of this utility model, when the powder enters the powder diffusion channel 6 from the powder conveying channel 5, the inclined portion 12 of the side wall guides the powder, causing the powder to diffuse along the inclined direction, so that the powder forms a uniform and stable powder flow before being sprayed out, laying the foundation for the powder to cover the workpiece in the subsequent spraying process.

[0028] In the example of this application, a weight-reducing region 8 is provided on the outer side wall of the tail portion 3 of the main body, and a concave portion 14 is provided in the inner cavity of the weight-reducing region 8.

[0029] As a preferred example of this utility model, the combination of the weight-reducing region 8 and the concave portion 14 can reduce the overall weight of the manifold without weakening the support performance of the tail portion 3 of the main body, thereby reducing the total load of the powder spray gun.

[0030] In the example of this application, a front nozzle 13 is provided at one end of the front part 2 of the main body.

[0031] As a preferred example of this utility model, the powder, after being transported by the powder conveying channel 5 and optimized by the powder diffusion channel 6, is finally ejected through the front spray outlet 13. The structural design of the front spray outlet 13 can limit the spraying direction of the powder, ensuring that the powder can be sprayed towards the workpiece to be coated in a preset direction.

[0032] In the example of this application, the front nozzle 13 is provided with a connecting groove 15, which is connected to the high-voltage module mounting channel 9.

[0033] As a preferred example of this utility model, after the high-voltage module is installed in the high-voltage module installation channel 9, a conductive ring is installed in the connecting groove 15. The high-voltage module is electrically connected to the conductive ring through a conductive spring, and the conductive ring is electrically connected to the electrode needle.

[0034] In the example of this application, the lower end of the front nozzle 13 is connected to the purge gas passage 11.

[0035] As a preferred example of this utility model, the purge air in the purge air channel 11 can reach the inner wall of the front spray outlet 13 through the connecting structure, so as to clean the powder remaining on the inner wall during the spraying process in time, prevent the powder from accumulating and clogging the front spray outlet 13, ensure that the spray outlet is always unobstructed, and avoid spraying interruption due to blockage.

[0036] In actual use, the powder spray gun is first connected through the powder tube mounting hole 4 at one end of the tail 3 of the main body, so that the powder enters the powder conveying channel 5 which is connected to the powder tube mounting hole 4. Then the powder flows along the powder conveying channel 5 to the powder diffusion channel 6 at one end. Under the guidance of the inclined part 12 on the side wall of the powder diffusion channel 6, the powder is diffused. Then the diffused powder continues to move towards the electrode needle base spray outlet 7, which is integrated with the powder conveying channel 5 in the inner cavity of the tail 3 of the main body. At the same time, the high voltage module is assembled in the high voltage module mounting channel 9 through the conductive spring. The high voltage electric field generated by the assembled high voltage module can be connected to the electrode needle of the electrode needle base spray outlet 7 through the conductive ring. The compressed air pipe is connected to the purge air pipe mounting thread 10 at one end of the purge air channel 11 to the purge air channel 11 pre-formed at the lower end of the tail 3 of the main body to clean the electrode needle. The diffused powder passes through the electrode needle base spray outlet 7 in sequence and is sprayed out from the front spray outlet 13.

[0037] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A powder spray gun manifold, characterized in that, include: The main body of the manifold (1) has a front part (2) and a tail part (3) at both ends. The inner cavity of the tail part (3) is provided with a powder conveying channel (5) and an electrode needle base spray outlet (7). The powder conveying channel (5) is connected to the electrode needle base spray outlet (7). The upper end of the tail part (3) is provided with a high-voltage module installation channel (9). The high-voltage module installation channel (9) extends to the inner cavity of the front part (2). The lower end of the tail part (3) is provided with a purge air channel (11). The purge air channel (11) is connected to the electrode needle base spray outlet (7). One end of the purge air channel (11) is provided with a purge air pipe installation thread (10).

2. The powder spray gun manifold according to claim 1, characterized in that, The main body (1), the front part (2), and the rear part (3) of the main body are all integrally formed using PBT material.

3. A powder spray gun manifold according to claim 1, characterized in that, The tail (3) of the main body is provided with a powder tube mounting hole (4), which is connected to the powder conveying channel (5).

4. A powder spray gun manifold according to claim 3, characterized in that, One end of the powder conveying channel (5) is provided with a powder diffusion channel (6), and the side wall of the powder diffusion channel (6) is provided with an inclined part (12).

5. A powder spray gun manifold according to claim 1, characterized in that, The outer side wall of the tail (3) of the main body is provided with a weight reduction area (8), and the inner cavity of the weight reduction area (8) is provided with a concave part (14).

6. A powder spray gun manifold according to claim 1, characterized in that, The front part (2) of the main body has a front nozzle (13) at one end.

7. A powder spray gun manifold according to claim 6, characterized in that, The front nozzle (13) is provided with a connecting groove (15), which is connected to the high-voltage module installation channel (9).

8. A powder spray gun manifold according to claim 6, characterized in that, The lower end of the front nozzle (13) is connected to the purge gas passage (11).

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