Spray gun for powder spraying

Abstract

The utility model discloses a spray gun for powder spraying, which comprises a spray gun main body, the front end of the spray gun main body is provided with a discharge pipe, the other end of the discharge pipe is provided with a spray head, the upper end face of the spray gun main body is provided with a fixed block, the fixed block is hinged with a mounting frame, the other end of the mounting frame is fixedly provided with an extension plate, and the extension plate is provided with a plurality of spray nozzles. The extending plate is in an arc shape, a material blocking plate is fixedly arranged at the other end of the extending plate, the material blocking plate is located right in front of the spray head, a material collecting box is fixedly arranged on the inner wall of the material blocking plate and located at the bottom, a supporting plate is fixedly arranged on the inner wall of the extending plate and located at the lower end, and an arc-shaped clamping groove is formed in the bottom of the supporting plate; and the discharging pipe is located in the arc-shaped clamping groove, so that in the spraying process, a user can place a workpiece between the material blocking plate and the spraying head for spraying, at the moment, the material blocking plate can block redundant powder, the redundant powder enters the material collecting box, and resource waste is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of powder spraying, and more particularly to a spray gun for powder spraying. Background Art

[0002] Powder spraying is the process of spraying powder coating onto the surface of a workpiece using powder spraying equipment. Under the action of static electricity, the powder will be evenly adsorbed on the surface of the workpiece to form a powdery coating; the powdery coating is then baked and leveled and solidified at high temperature to become a final coating with different effects; the spraying effect of powder spraying is superior to that of painting in terms of mechanical strength, adhesion, corrosion resistance, and aging resistance, and the cost is also lower than that of painting with the same effect. In the process of spraying powder, a spray gun is required.

[0003] Most existing spray guns use a hose to guide the powder into the spray gun and then spray it out through the nozzle. However, in the process of spraying parts, due to the large range of the sprayed powder, some powder will inevitably be wasted during the spraying process, increasing the cost of use.

[0004] In addition, the sealing effect of the connection between the nozzle and the spray gun is not good. Most of them are only fixed by nuts, which causes powder to leak out from the connection during use, resulting in a part of the material being wasted and affecting normal use. Utility Model Content

[0005] (1) Technical problems solved

[0006] In response to the problems existing in the prior art, the utility model provides a spray gun for powder spraying to solve the technical problem that most of the existing spray guns mentioned in the background technology guide the powder into the spray gun through a hose and then spray it out through a nozzle. However, in the process of spraying parts, due to the large range of the sprayed powder, some of the powder will inevitably be wasted during the spraying process.

[0007] (2) Technical solution

[0008] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a spray gun for powder spraying, comprising a spray gun body, a discharge pipe being provided at the front end of the spray gun body, a nozzle being provided at the other end of the discharge pipe, a fixed block being provided on the upper end surface of the spray gun body, a mounting bracket being hingedly provided on the fixed block, an extension plate being fixedly provided at the other end of the mounting bracket, the extension plate being arc-shaped, and a baffle being fixedly provided at the other end thereof, the baffle being located directly in front of the nozzle, a collecting box being fixedly provided on the inner wall of the baffle plate and at the bottom, a support plate being fixedly provided on the inner wall of the extension plate and at the lower end, an arc-shaped groove being provided at the bottom of the support plate, the discharge pipe being located inside the arc-shaped groove, a first conical surface being provided on the inner wall of the discharge pipe, a second conical surface being correspondingly provided on the outer wall of the nozzle, and the second conical surface being located inside the first conical surface.

[0009] The utility model is further configured such that a clamping ring is fixedly provided on one side of the second conical surface and on the outer wall of the nozzle, the outer wall diameter of the clamping ring is equal to the outer wall diameter of the discharge pipe, a fastening nut is provided at the connection position between the nozzle and the discharge pipe, an external thread is provided on the outer wall of the discharge pipe, the fastening nut is threadedly connected to the external thread, and the interior of the fastening nut is abutted against the outer wall of the clamping ring, so as to increase the sealing between the nozzle and the discharge pipe.

[0010] The utility model is further configured such that a sealing rubber ring is provided between the pressing ring and the discharge pipe, so as to achieve a better sealing effect between the pressing ring and the discharge pipe.

[0011] The utility model is further configured as follows: mounting blocks are provided on both sides of the outer wall of the spray gun body, circular holes are provided on the mounting blocks, flashlights are movably provided inside the circular holes, latches are slidably provided on the mounting blocks, corresponding slots are provided on the outer walls of the flashlights, and the lower ends of the latches are located inside the slots, which facilitates the installation and removal of the flashlights.

[0012] The present invention is further configured such that a pull block is fixedly provided on the upper end of the latch, and a spring is fixedly provided between the pull block and the mounting block to facilitate the latch to enter the slot.

[0013] The present invention is further configured such that the first conical surface and the second conical surface have the same inclination, so that the second conical surface can be inserted into the first conical surface, achieving an increasingly tight effect.

[0014] The utility model is further configured such that an external pipe is provided at the lower end of the spray gun body, so as to facilitate the powdered paint to enter the spray gun body.

[0015] The utility model is further configured such that a hanging block is fixedly provided on one side of the upper end surface of the spray gun body to facilitate placement of the device.

[0016] (3) Beneficial effects

[0017] Compared with the prior art, the present invention provides a spray gun for powder spraying, which has the following beneficial effects:

[0018] 1. By setting up the extension plate, baffle plate and collection box, during the spraying process, the user can place the workpiece in the middle position between the baffle plate and the nozzle for spraying. At this time, the baffle plate will block the excess powder and allow the excess powder to enter the collection box, reducing resource waste and facilitating subsequent secondary utilization. This design can also protect the surrounding environment and reduce air pollution.

[0019] 2. By setting the first conical surface, the second conical surface and the fastening nut, the user can insert the second conical surface on the nozzle into the first conical surface, and tighten the fastening nut to make its inside press against the clamping ring to prevent leakage. A sealing rubber ring is also set in the middle position of the clamping ring and the discharge pipe to further increase the sealing of the connection position, prevent leakage, and facilitate subsequent use.

[0020] 3. By setting up a flashlight and a latch, when spraying a workpiece in a poorly lit environment, the user can insert the flashlight into the circular hole and pull the pull block to make the lower end of the latch enter the slot to assemble the flashlight and the spray gun body. At this time, the flashlight can provide lighting for the device, making it easier for the user to use the device in a poorly lit environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is an overall schematic diagram of a powder spraying gun when not in use;

[0022] Figure 2 Exploded view of the installation of the mounting block, flashlight, latch and pull block on the spray gun body;

[0023] Figure 3 This is a schematic diagram of the positions of the extension plate, baffle plate, collection box, support plate and arc-shaped slot on the mounting frame;

[0024] Figure 4 This is a cross-sectional view of the installation of the nozzle, the first cone surface, the second cone surface and the fastening nut on the discharge pipe;

[0025] Figure 5 Schematic diagram of the position of the discharge pipe, external thread, mounting block and circular hole on the spray gun body.

[0026] In the figure: 1. Spray gun body; 2. Discharge pipe; 3. Spray nozzle; 4. Fixing block; 5. Mounting frame; 6. Extension plate; 7. Material baffle plate; 8. Collecting box; 9. Support plate; 10. Arc slot; 11. First conical surface; 12. Second conical surface; 13. Pressure ring; 14. Fastening nut; 15. External thread; 16. Sealing rubber ring; 17. Mounting block; 18. Circular hole; 19. Flashlight; 20. Pin; 21. Slot; 22. Pull block; 23. Spring; 24. External tube; 25. Hanging block. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0029] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually relative to the directions shown in the drawings, or relative to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually relative to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned direction words are not used to limit the present invention.

[0030] See also Figure 1-Figure 5 The top of the spray gun is provided with a plurality of nozzles, and the nozzles 2 are provided with a plurality of nozzles 3. The nozzles 3 are provided with a plurality of nozzles 4. The nozzles 3 are provided with a plurality of nozzles 5. The nozzles 3 are provided with a plurality of nozzles 6. The nozzles 3 are provided with a plurality of nozzles 7.

[0031] In this embodiment, a clamping ring 13 is fixedly provided on one side of the second conical surface 12 and on the outer wall of the nozzle 3. The outer wall diameter of the clamping ring 13 is equal to the outer wall diameter of the discharge pipe 2. A fastening nut 14 is provided at the connection position between the nozzle 3 and the discharge pipe 2. An external thread 15 is provided on the outer wall of the discharge pipe 2. The fastening nut 14 is threadedly connected to the external thread 15. The interior of the fastening nut 14 is against the outer wall of the clamping ring 13. A sealing rubber ring 16 is provided between the clamping ring 13 and the discharge pipe 2.

[0032] More specifically, the user can rotate the extension plate 6 through the cooperation of the fixing block 4 and the mounting bracket 5 so that the baffle plate 7 is located directly in front of the nozzle 3. During the spraying process, the user can place the workpiece in the middle position between the baffle plate 7 and the nozzle 3 for spraying. At this time, the baffle plate 7 will block the excess powder and allow the excess powder to enter the collection box 8, reducing resource waste and facilitating subsequent secondary utilization. When installing the nozzle 3, the second conical surface 12 on the nozzle 3 can be inserted into the first conical surface 11, and the tightening nut 14 can be tightened to press the clamping ring 13 inside it, and a sealing rubber ring 16 is also provided in the middle position between the clamping ring 13 and the discharge pipe 2, which can further increase the sealing of the connection position and prevent leakage.

[0033] See also Figure 1 、 Figure 2 and Figure 5 As an embodiment of using the device in a dimly lit environment: mounting blocks 17 are provided on the outer wall of the spray gun body 1 and on both sides, circular holes 18 are opened on the mounting blocks 17, and a flashlight 19 is movably provided inside the circular holes 18. A latch 20 is slidably provided on the mounting blocks 17, and a slot 21 is correspondingly opened on the outer wall of the flashlight 19. The lower end of the latch 20 is located inside the slot 21, and a pull block 22 is fixedly provided on the upper end of the latch 20. A spring 23 is fixed between the pull block 22 and the mounting block 17.

[0034] Specifically, when spraying a workpiece in a poorly lit environment, the user can insert the flashlight 19 into the circular hole 18 and pull the pull block 22 to make the lower end of the pin 20 enter the slot 21 to assemble the flashlight 19 and the spray gun body 1. At this time, the flashlight 19 can provide lighting for the device, making it easier for the user to use the device in a poorly lit environment.

[0035] Please refer to Figure 1 As a further embodiment of guiding the powder into the spray gun body 1: an external pipe 24 is provided at the lower end of the spray gun body 1, and a hanging block 25 is fixedly provided on one side of the upper end surface of the spray gun body 1.

[0036] Specifically, the user can place the spray gun body 1 through the hanging block 25 .

[0037] To sum up, when the overall equipment is in use: the user can rotate the extension plate 6 through the cooperation of the fixing block 4 and the mounting bracket 5, so that the baffle plate 7 is located in front of the nozzle 3. During the spraying process, the user can place the workpiece in the middle of the baffle plate 7 and the nozzle 3 for spraying. At this time, the baffle plate 7 will block the excess powder and allow the excess powder to enter the collection box 8, reducing resource waste and facilitating subsequent secondary utilization. When spraying the workpiece in a poorly lit environment, the user can insert the flashlight 19 into the circular hole 18 and pull the pull block 22 to The lower end of the pin 20 is inserted into the slot 21 to assemble the flashlight 19 and the spray gun body 1. At this time, the flashlight 19 can provide lighting for the device, so that the user can use the device in a poorly lit environment. When installing the nozzle 3, the second cone surface 12 on the nozzle 3 can be inserted into the first cone surface 11, and the fastening nut 14 is tightened to press the clamping ring 13 inside it. A sealing rubber ring 16 is also provided in the middle position between the clamping ring 13 and the discharge pipe 2 to further increase the sealing of the connection position and prevent leakage.

[0038] When in use, the user can rotate the extension plate 6 through the cooperation of the fixing block 4 and the mounting bracket 5 so that the baffle plate 7 is located directly in front of the nozzle 3. During the spraying process, the user can place the workpiece in the middle position between the baffle plate 7 and the nozzle 3 for spraying. At this time, the baffle plate 7 will block the excess powder and allow the excess powder to enter the collection box 8, reducing resource waste.

[0039] When spraying a workpiece in a poorly lit environment, the user can insert the flashlight 19 into the circular hole 18 and pull the pull block 22 to make the lower end of the pin 20 enter the slot 21 to assemble the flashlight 19 with the spray gun body 1. At this time, the flashlight 19 can provide lighting for the device, making it easier for the user to use the device in a poorly lit environment.

[0040] When installing the nozzle 3, the second conical surface 12 on the nozzle 3 can be inserted into the first conical surface 11, and the fastening nut 14 can be tightened to press the clamping ring 13 inside. At this time, the nozzle 3 can be fixed to the discharge pipe 2.

[0041] In all the schemes mentioned above, the connection between the two components can be selected according to actual conditions by welding, bolt and nut connection, bolt or screw connection or other well-known connection methods, which will not be listed here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A spray gun for powder coating, comprising a spray gun body (1), characterized in that: The front end of the spray gun body (1) is provided with a discharge pipe (2), the other end of the discharge pipe (2) is provided with a nozzle (3), the upper end surface of the spray gun body (1) is provided with a fixing block (4), the fixing block (4) is hingedly provided with a mounting frame (5), the other end of the mounting frame (5) is fixedly provided with an extension plate (6), the extension plate (6) is in an arc shape, and the other end thereof is fixedly provided with a baffle plate (7), the baffle plate (7) is located in front of the nozzle (3), and the baffle plate (7) is fixedly provided with a baffle plate (7). A collecting box (8) is fixedly provided on the inner wall and at the bottom of the extending plate (6), a supporting plate (9) is fixedly provided on the inner wall and at the lower end of the extending plate (6), an arc-shaped slot (10) is provided at the bottom of the supporting plate (9), the discharging pipe (2) is located inside the arc-shaped slot (10), a first conical surface (11) is provided on the inner wall of the discharging pipe (2), and a second conical surface (12) is correspondingly provided on the outer wall of the nozzle (3), and the second conical surface (12) is located inside the first conical surface (11).

2. A powder spraying gun according to claim 1, characterized in that: A clamping ring (13) is fixedly provided on one side of the second conical surface (12) and on the outer wall of the nozzle (3). The outer wall diameter of the clamping ring (13) is equal to the outer wall diameter of the discharge pipe (2). A fastening nut (14) is provided at the connection position between the nozzle (3) and the discharge pipe (2). An external thread (15) is provided on the outer wall of the discharge pipe (2). The fastening nut (14) is threadedly connected to the external thread (15). The interior of the fastening nut (14) abuts against the outer wall of the clamping ring (13).

3. A powder spraying gun according to claim 2, characterized in that: A sealing rubber ring (16) is provided between the pressing ring (13) and the discharge pipe (2).

4. The powder spraying gun according to claim 1, wherein: Mounting blocks (17) are provided on both sides of the outer wall of the spray gun body (1), and circular holes (18) are provided on the mounting blocks (17). A flashlight (19) is movably provided inside the circular hole (18). A latch (20) is slidably provided on the mounting blocks (17), and a slot (21) is correspondingly provided on the outer wall of the flashlight (19), and the lower end of the latch (20) is located inside the slot (21).

5. A powder spraying gun according to claim 4, characterized in that: A pull block (22) is fixedly provided at the upper end of each latch pin (20), and a spring (23) is fixedly provided between each pull block (22) and the mounting block (17).

6. The powder spraying gun according to claim 1, wherein: The first conical surface (11) and the second conical surface (12) have the same inclination.

7. The powder spraying gun according to claim 1, wherein: An external pipe (24) is provided at the lower end of the spray gun body (1).

8. The powder spraying gun according to claim 1, wherein: A hanging block (25) is fixedly provided on one side of the upper end surface of the spray gun body (1).

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