A rapid cleaning device for the nozzle of a spray gun.

Abstract

This utility model discloses a rapid cleaning device for the nozzle of a spray gun, comprising a hollow shell with a nozzle inlet, a fixed plate fixedly mounted inside the shell, a hollow main shaft driven by a drive motor rotatably connected to the fixed plate, the end of the main shaft away from the nozzle inlet passing through the fixed plate and connected to a negative pressure connecting pipe via a dynamic sealing bushing, and a hollow transfer cylinder connected to the end of the main shaft facing the nozzle inlet, the transfer cylinder being connected to a cleaning cylinder abutting against the nozzle inlet, the cleaning cylinder including a cylinder body with spiral brushes on the inner wall, the cylinder body including a partition with a first negative pressure hole, an internal cleaning component aligned with the inside of the nozzle connected in the middle of the partition, the internal component including a protrusion and several annular brushes distributed on the surface of the protrusion. This utility model can effectively clean the inside of the nozzle, prevent sprayed material from remaining inside the nozzle, prevent sprayed material from clogging the discharge hole or atomization hole, and ensure the cleaning effect of the nozzle.

Description

Technical Field

[0001] This utility model relates to the field of spray gun cleaning technology, and in particular to a rapid cleaning device for the nozzle of a spray gun. Background Technology

[0002] The spraying process for sheet metal is a crucial part of the production process, as spray-coated sheets possess excellent properties such as rust and corrosion resistance. Spray guns are used in automated sheet metal spraying production lines. During spraying, a linear module drives a robotic arm to move left and right, adjusting the spray position and direction of the spray gun head to apply paint to the product. After each set of products is sprayed, the spray gun head needs to be cleaned. This is because after prolonged spraying, the nozzle can become clogged with paint and airborne impurities, affecting the quality of subsequent coatings. Therefore, to prevent paint and other spraying substances from clogging the nozzle's outlet or atomization hole, a cleaning device is installed in a fixed location. Each time cleaning is needed, the robotic arm moves the nozzle to the cleaning device, which automatically cleans it.

[0003] Currently, existing spray gun nozzle cleaning devices mainly use multiple sets of cotton roller brushes to clean the nozzle, removing residual paint and preventing clogging of the nozzle by paint and other sprayed substances. However, the inner diameter of the nozzle is generally quite narrow, and the cotton roller brushes cannot effectively clean the inside of the nozzle, easily leaving some paint and other sprayed substances inside. This results in incomplete cleaning of the nozzle, and the accumulation of paint and other sprayed substances in the nozzle over time can still clog the discharge port or atomization port. Utility Model Content

[0004] To address the technical problem that existing gun head cleaning devices cannot effectively clean the inside of the gun head, easily leaving some paint and other sprayed substances inside, resulting in incomplete cleaning, this utility model provides the following technical solution.

[0005] This utility model discloses a rapid cleaning device for the nozzle of a spray gun, comprising a hollow housing with a nozzle inlet, a fixed plate fixedly installed inside the housing, a hollow main shaft driven by a drive motor rotatably connected to the fixed plate, one end of the main shaft away from the nozzle inlet passing through the fixed plate and connected to a negative pressure connecting pipe via a dynamic sealing bushing, and a hollow transfer cylinder connected to the other end of the main shaft facing the nozzle inlet, the transfer cylinder being connected to a cleaning cylinder abutting against the nozzle inlet, the cleaning cylinder including a cylinder body with a spiral brush on the inner wall, the cylinder body including a partition with a first negative pressure hole, an inner sweeping component aligned with the inside of the nozzle connected in the middle of the partition, the inner sweeping component including a protrusion and a plurality of annular brushes distributed on the surface of the protrusion.

[0006] As a further technical solution, a pre-removal ring is provided at the gun head inlet and is fixedly connected to the outer wall of the housing, and a number of pre-removal components are provided on the inner wall of the pre-removal ring.

[0007] As a further technical solution, the internal scanning component also includes a plurality of second negative pressure holes that penetrate the protrusion and communicate with the transfer cylinder, the second negative pressure holes being evenly distributed outside the annular brush.

[0008] As a further technical solution, a sliding ring is fixedly provided on the outer periphery of the cylinder, and a fixed ring that is rotatably connected to the sliding ring is fixedly provided in the inner cavity of the shell.

[0009] As a further technical solution, a driven gear is fixedly provided on the outer periphery of the main shaft, and a driving gear that meshes with the driven gear is connected to the output end of the drive motor.

[0010] As a further technical solution, the surface of the partition is a soft frosted surface.

[0011] The beneficial effects of this utility model are as follows: the cleaning cylinder of this utility model is equipped with a spiral brush and a first negative pressure hole, which can clean the outside of the gun head and suck up the waste residue by negative pressure. The cleaning cylinder is connected to an inner cleaning component, which is equipped with a protrusion and multiple annular brushes. The multiple annular brushes are used to clean the discharge hole or atomization hole. The protrusion is equipped with a second negative pressure hole. Both the first negative pressure hole and the second negative pressure hole are connected to a transfer cylinder and a negative pressure connecting pipe, which can suck up the waste residue swept by the annular brushes. Thus, the inside of the gun head can be effectively cleaned, preventing sprayed material from remaining inside the gun head and preventing sprayed material from clogging the discharge hole or atomization hole, thus ensuring the cleaning effect of the gun head. Attached Figure Description

[0012] Figure 1 This is an external schematic diagram of the rapid cleaning device for the nozzle of the spray gun of this utility model;

[0013] Figure 2 This is a schematic diagram of the internal structure of the quick cleaning device for the nozzle of the spray gun of this utility model;

[0014] Figure 3 This is another perspective view of the interior of the housing of the spray gun head rapid cleaning device of this utility model;

[0015] Figure 4 This is a cross-sectional schematic diagram of the housing and cleaning cylinder of the spray gun head rapid cleaning device of this utility model;

[0016] Figure 5 This is a cross-sectional schematic diagram of the cleaning cylinder of the rapid cleaning device for the nozzle of the spray gun of this utility model;

[0017] In the diagram: 1-Housing; 101-Gun inlet; 102-Fixing plate; 103-Fixing ring; 2-Pre-removal ring; 201-Pre-removal component; 3-Main shaft; 301-Dynamic seal bushing; 4-Transfer cylinder; 5-Sweeping cylinder; 501-Cylinder body; 502-Sliding ring; 503-Spiral brush; 504-Partition plate; 505-First negative pressure hole; 6-Drive motor; 7-Driving gear; 8-Driven gear; 9-Internal sweeping component; 901-Protrusion; 902-Annular brush; 903-Second negative pressure hole; 10-Negative pressure connecting pipe. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0019] In the description of this utility model, it should be understood that the terms "upper" and "lower" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] like Figure 1 As shown, the present invention provides a quick cleaning device for the nozzle of a spray gun, comprising a hollow housing 1 with a nozzle inlet 101. The nozzle inlet 101 is a circular through-hole structure. After the spraying work of the spray gun is completed, the robot arm can insert the nozzle of the spray gun into the inner cavity of the housing 1 through the nozzle inlet 101.

[0021] like Figure 2 and Figure 3As shown, in a preferred embodiment, a fixing plate 102 is fixedly provided inside the housing 1, which divides the housing 1 into two parts. A main shaft 3 is provided on the side of the fixing plate 102 facing the nozzle inlet 101. The fixing plate 102 is rotatably connected to the main shaft 3, which is driven by a drive motor 6 and has a hollow structure. The end of the main shaft 3 away from the nozzle inlet 101 passes through the fixing plate 102 and is connected to a negative pressure connecting pipe 10 via a dynamic sealing bushing 301. The negative pressure connecting pipe 10 is connected to an external vacuum cleaner. A hollow transfer cylinder 4 is connected to the end of the main shaft 3 facing the nozzle inlet 101. The transfer cylinder 4 is connected to a cleaning cylinder 5 that abuts against the nozzle inlet 101. After the external vacuum cleaner is started, the negative pressure connecting pipe 10 connects to the cleaning cylinder 5 through the hollow main shaft 3 and the transfer cylinder 4, providing negative pressure to the cleaning cylinder 5 to facilitate the negative pressure suction of the sprayed material.

[0022] In a preferred embodiment, a pre-removal ring 2 is provided at the nozzle inlet 101 and is fixedly connected to the outer wall of the housing 1. The inner wall of the pre-removal ring 2 is provided with a plurality of pre-removal components 201, which are rubber plates or rubber strips. When the robot drives the nozzle into the nozzle inlet 101, the nozzle rubs against the pre-removal components 201. At this time, part of the coating material on the outside of the nozzle is removed.

[0023] In a preferred embodiment, a sliding ring 502 is fixedly provided on the outer periphery of the cylinder 501, and a fixed ring 103 rotatably connected to the sliding ring 502 is fixedly provided in the inner cavity of the housing 1. When the main shaft 3 rotates relative to the fixed plate 102, the sliding ring 502 and the fixed ring 103 rotate relative to each other, which can ensure the stability of the cleaning cylinder 5 relative to the gun head during the cleaning process and ensure the stability of the cleaning process. At this time, a driven gear 8 is fixedly provided on the outer periphery of the main shaft 3, and a drive gear 7 meshing with the driven gear 8 is connected to the output end of the drive motor 6. The drive motor 6 drives the rotation of the main shaft 3, thereby causing the cleaning cylinder 5 to rotate and clean the gun head.

[0024] like Figure 4 and Figure 5 As shown, in a preferred embodiment, the cleaning cylinder 5 includes a cylinder body 501, which is a hollow cylindrical structure and is fixedly connected to the transfer cylinder 4. A spiral brush 503 is provided on the inner wall of the cylinder body 501. The spiral brush 503 is a spiral cotton brush or bristle brush, used to clean the exterior of the spray gun head. The cylinder body 501 includes a partition 504 with a first negative pressure hole 505. The partition 504 blocks the transfer cylinder 4, and the first negative pressure hole 505 connects to the transfer cylinder 4. The sprayed material that has been cleaned enters the transfer cylinder 4 and the negative pressure connecting pipe 10 through the first negative pressure hole 505, and is finally collected by an external vacuum cleaner.

[0025] In a preferred embodiment, the partition 504 itself is made of metal, but its surface has a soft frosted surface, which can rub away some of the sprayed material on the gun head and discharge the waste residue from the first negative pressure hole 505. An internal sweeping component 9, aligned with the inside of the gun head, is connected in the middle of the partition 504. The internal sweeping component 9 includes a protrusion 901 and several annular brushes 902 distributed on the surface of the protrusion 901. The protrusion 501 matches the shape of the discharge hole or atomizing hole inside the gun head, thereby allowing the multiple annular brushes 902 to sweep away the sprayed material at the discharge hole or atomizing hole. Simultaneously, the internal sweeping component 9 also includes several second negative pressure holes 903 penetrating the protrusion 901 and communicating with the transfer cylinder 4. The second negative pressure holes 903 are evenly distributed outside the annular brushes 902. After the annular brushes 902 sweep away the sprayed material at the discharge hole or atomizing hole, the waste residue is discharged from the second negative pressure holes 903.

[0026] The preferred embodiments and examples of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments and examples. Within the scope of knowledge possessed by those skilled in the art, various changes or equivalent substitutions can be made without departing from the concept of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A rapid cleaning device for the nozzle of a spray gun, comprising a hollow housing (1) having a nozzle inlet (101), characterized in that: A fixing plate (102) is fixedly provided inside the housing (1). The fixing plate (102) is rotatably connected to a hollow main shaft (3) driven by a drive motor (6). The end of the main shaft (3) away from the gun head inlet (101) passes through the fixing plate (102) and is connected to a negative pressure connecting pipe (10) through a dynamic sealing bushing (301). The end of the main shaft (3) facing the gun head inlet (101) is connected to a hollow transfer cylinder (4). The transfer cylinder (4) is connected to... There is a cleaning cylinder (5) that abuts against the gun head inlet (101). The cleaning cylinder (5) includes a cylinder body (501) with a spiral brush (503) on the inner wall. The cylinder body (501) includes a partition (504) with a first negative pressure hole (505). An inner cleaning component (9) aligned with the inside of the gun head is connected in the middle of the partition (504). The inner cleaning component (9) includes a protrusion (901) and a plurality of annular brushes (902) distributed on the surface of the protrusion (901).

2. The rapid cleaning device for the nozzle of the spray gun according to claim 1, characterized in that: The gun head inlet (101) is provided with a pre-removal ring (2) that is fixedly connected to the outer wall of the housing (1), and the inner wall of the pre-removal ring (2) is provided with a plurality of pre-removal components (201).

3. The rapid cleaning device for the nozzle of the spray gun according to claim 1, characterized in that: The internal sweeping component (9) also includes a plurality of second negative pressure holes (903) that penetrate the protrusion (901) and are connected to the transfer cylinder (4), and the second negative pressure holes (903) are evenly distributed outside the annular brush (902).

4. The rapid cleaning device for the nozzle of the spray gun according to claim 1, characterized in that: A sliding ring (502) is fixedly provided on the outer periphery of the cylinder (501), and a fixed ring (103) is fixedly provided in the inner cavity of the shell (1) and is rotatably connected to the sliding ring (502).

5. The rapid cleaning device for the nozzle of the spray gun according to claim 1, characterized in that: The main shaft (3) is fixedly provided with a driven gear (8) on its outer periphery, and the output end of the drive motor (6) is connected to a driving gear (7) that meshes with the driven gear (8).

6. The rapid cleaning device for the nozzle of the spray gun according to claim 1, characterized in that: The surface of the partition (504) is a soft frosted surface.

Images