Spraying shielding device

Abstract

The utility model belongs to the technical field of spraying processes, and particularly relates to a spraying shielding device which comprises an installation plate, a power assembly arranged on the installation plate, a positioning rod arranged on the side face, a receding hole formed in the middle, a shielding assembly arranged on the positioning rod and a glue scraping assembly arranged in the middle of the positioning rod. The shielding assembly comprises a mounting base, a bearing is arranged in the mounting base, a bearing outer ring is fixedly connected with the annular support, a shielding cylinder is arranged in a bearing inner ring and is of a trumpet-shaped structure, a connecting plate is arranged on the outer side wall of the shielding cylinder, and the shielding cylinder is connected with the power assembly; the glue scraping assembly comprises a positioning block, and a scraper is arranged on the positioning block and abuts against the inner side wall of the shielding cylinder. A glue gun of the spraying machine passes through the receding hole, the shielding cylinder blocks the fan-shaped edge sprayed by the glue gun, the product quality is guaranteed, the labor intensity of workers is reduced, the scraper scrapes paint sprayed to the inner side wall of the shielding cylinder, the situation that the paint is accumulated to the inner side wall of the shielding cylinder, and the flatness of the edge of the shielding cylinder is affected is prevented, and the production efficiency is improved. And the flatness of the edge of the paint which passes through the shielding cylinder and is distributed in a fan-shaped manner is further influenced.

Description

Technical Field

[0001] This utility model relates to the field of spraying technology, and in particular to a spraying masking device. Background Technology

[0002] With the development of technology and the progress of society, the use of automobiles is becoming more and more widespread. As automobile sales increase, automobile production is also increasing, and the scale of automated automobile production is also growing larger.

[0003] During the production of automobiles, due to the variety of colors available, parts need to be painted. However, the paint sprayed from the nozzles of existing painting machines is fan-shaped and has uneven edges, resulting in uneven paint thickness on the automotive parts, which seriously affects product quality.

[0004] Therefore, the existing method is to cover the car parts that need to be painted with a diaphragm to block the painting from the edge of the car parts. Although this method is effective, it greatly increases the workload of workers, and the painting quality depends heavily on the workers' diaphragm covering quality, which makes it impossible to guarantee the quality of the product.

[0005] To address the aforementioned problems, this utility model document proposes a spray masking device. Utility Model Content

[0006] This invention provides a spray masking device that improves product quality and reduces the workload of workers.

[0007] This utility model provides the following technical solution:

[0008] A spray masking device includes a mounting plate, a power assembly on the mounting plate, a positioning rod on one side, a clearance hole in the middle, a masking assembly at one end of the positioning rod, and a scraping assembly in the middle of the positioning rod between the mounting plate and the masking assembly.

[0009] The shielding assembly includes an annular mounting base with a slot on one side. A bearing is installed in the slot, and the outer ring of the bearing is fixedly connected to the mounting base. A shielding cylinder is installed in the inner ring of the bearing. The shielding cylinder has a trumpet-shaped structure, and a connecting plate is provided on the outer wall of its larger diameter end. The shielding cylinder is connected to the power assembly for power transmission. The central axis of the shielding cylinder is coaxial with the central axis of the clearance hole.

[0010] The adhesive scraping assembly includes a positioning block, on which a scraper is provided. The scraper is inclined and abuts against the inner wall of the shielding cylinder.

[0011] Furthermore, the power assembly includes a first motor, a drive wheel is connected to the output shaft of the first motor, the outer wall of the shielding cylinder is fixedly sleeved on the driven wheel, and the drive wheel and the driven wheel are connected by a belt.

[0012] Furthermore, the mounting plate is evenly provided with 4 positioning rods, and the positioning block has 2 first positioning holes, which are respectively fitted onto 2 adjacent positioning rods. The positioning block is also provided with mounting holes, and the scraper is fixed to the positioning block with bolts through the mounting holes.

[0013] Furthermore, it also includes a glue-applying assembly, which includes a second motor and a belt conveyor mechanism. The second motor is connected to the belt conveyor mechanism via power transmission. The belt conveyor mechanism is located below the end of the shielding cylinder with the larger diameter. The belt conveyor mechanism has a positioning plate on its side, and the positioning plate has a second positioning hole. The positioning plate is fitted onto the positioning rod through the second positioning hole.

[0014] Furthermore, it also includes a glue-receiving hopper, which is located below the end of the shielding cylinder with the larger diameter. The glue-receiving hopper has a positioning plate on its side, and the positioning plate has a second positioning hole. The positioning plate is fitted onto the positioning rod through the second positioning hole.

[0015] Furthermore, it also includes an isolation air knife assembly, which is located above the shielding cylinder. The isolation air knife assembly includes an air knife, and positioning brackets are provided on both sides of the air knife. The positioning brackets are located on the positioning rod.

[0016] In this invention, a clearance hole allows the glue gun of the spraying machine to pass through. A masking tube blocks the fan-shaped edge of the paint sprayed from the glue gun, ensuring that the edge of the fan-shaped paint passing through the masking tube is neat and uniform, thus guaranteeing product quality and reducing the labor intensity of workers. A scraper removes the paint sprayed onto the inner wall of the masking tube, preventing paint from accumulating on the inner wall of the masking tube and affecting the flatness of the edge of the masking tube, which in turn affects the flatness of the fan-shaped paint edge passing through the masking tube. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a spray masking device provided in an embodiment of the present utility model;

[0018] Figure 2 An exploded view of a spray masking device provided in an embodiment of this utility model;

[0019] Figure 3 This is an exploded view of the masking component and the power component in a spray masking device provided in an embodiment of the present invention.

[0020] Figure label:

[0021] 1. Mounting plate; 101. Clearance hole; 2. Positioning rod; 3. Shielding assembly; 301. Mounting base; 302. Slot; 303. Bearing; 304. Shielding cylinder; 305. Driven wheel; 306. Connecting plate; 4. Glue scraping assembly; 401. Positioning block; 402. First positioning hole; 403. Scraper; 5. Glue receiving assembly; 501. Second motor; 502. Belt conveyor mechanism; 503. Positioning plate; 504. Second positioning hole; 6. Isolation air knife assembly; 601. Air knife; 602. Positioning bracket; 7. Power assembly; 701. First motor; 702. Drive wheel; 703. Belt. Detailed Implementation

[0022] The embodiments of the present invention will now be described with reference to the accompanying drawings.

[0023] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of this utility model, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this utility model, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0024] In this embodiment of the invention, the terms "first" and "second" 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. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0025] In this embodiment of the utility model, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0026] References to "one embodiment" or "some embodiments" as used in this specification mean that one or more embodiments of the present invention include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0027] Example 1:

[0028] Reference Figure 1 , Figure 2 and Figure 3 As shown, a spray masking device includes a mounting plate 1, a power assembly 7 on the mounting plate 1, a positioning rod 2 on one side of the mounting plate 1, a clearance hole 101 in the middle, a masking assembly 3 at one end of the positioning rod 2, and a scraping assembly 4 in the middle of the positioning rod 2 between the mounting plate 1 and the masking assembly 3.

[0029] The shielding assembly 3 includes an annular mounting base 301. A slot 302 is opened on one side of the mounting base 301. A bearing 303 is installed in the slot 302. The outer ring of the bearing 303 is fixedly connected to the mounting base 301. A shielding cylinder 304 is installed in the inner ring of the bearing 303. The shielding cylinder 304 has a trumpet-shaped structure. A connecting plate 306 is provided on the outer wall of the end with the larger diameter. The connecting plate 306 is connected to the inner wall of the bearing 303. The shielding cylinder 304 is connected to the power assembly 7 for power transmission. The central axis of the shielding cylinder 304 is coaxial with the central axis of the clearance hole 101.

[0030] The adhesive scraping assembly 4 includes a positioning block 401, on which a scraper 403 is provided. The scraper 403 is inclined and abuts against the inner wall of the shielding cylinder 304.

[0031] The clearance hole 101 in the middle of the mounting plate 1 facilitates the installation of the spray masking device on the spray gun during use, allowing the glue gun of the spray gun to pass through. The masking cylinder 304 can mask the edges of the fan-shaped paint sprayed from the glue gun, making the edges smooth, thus resulting in a smooth and uniform paint surface on the automotive parts. The paint masked by the masking cylinder 304 adheres to the inner wall of the masking cylinder 304. The power component 7 drives the masking cylinder 304 to rotate, and the scraper 403 abuts against the inner wall of the masking cylinder 304. At the same time, the position of the scraper 403 is fixed. As the masking cylinder 304 rotates, the scraper 403 adheres to the masking cylinder 304. The paint is scraped off the inner wall of the masking cylinder 304 to prevent paint buildup, which would affect the flatness of the paint outlet and result in uneven edges on the paint sprayed from the masking cylinder 304, thus affecting the coating quality and ultimately the product quality. In addition, if too much paint accumulates on the inner wall of the masking cylinder 304, it will cause the masking cylinder 304 to rotate unstably, and the scraper 403 will be unable to scrape off the paint from the inner wall of the masking cylinder 304. This will cause the masking cylinder 304 to bounce up and down when rotating, resulting in wavy paint coming out of the masking cylinder 304, which will affect the coating quality and the product quality.

[0032] The scraper 403 is tilted so that it can fit tightly against the inner wall of the masking cylinder 304, thereby ensuring that the scraper 403 can cleanly remove the paint adhering to the inner wall of the masking cylinder 304.

[0033] The power assembly 7 includes a first motor 701, a drive wheel 702 connected to the output shaft of the first motor 701, and a driven wheel 305 fixedly sleeved on the outer wall of the shielding cylinder 304. The drive wheel 702 and the driven wheel 305 are connected by a belt 703.

[0034] The first motor 701 drives the drive wheel 702 to rotate, and the drive wheel 702 drives the driven wheel 305 to rotate via the belt 703. The driven wheel 305 is sleeved on and fixed to the outer wall of the shielding cylinder 304, so that when the driven wheel 305 rotates, it drives the shielding cylinder 304 to rotate. When the shielding cylinder 304 rotates, its inner wall rotates along the scraper 403, and then the scraper 403 scrapes off the paint adhering to the inner wall of the shielding cylinder 304.

[0035] The mounting plate 1 is evenly provided with 4 positioning rods 2. The positioning block 401 has 2 first positioning holes 402. The 2 first positioning holes 402 are respectively fitted onto the 2 adjacent positioning rods 2. The positioning block 401 is also provided with mounting holes. The scraper 403 is fixed to the positioning block 401 through the mounting holes and bolts.

[0036] The mounting plate 1 is connected to the masking assembly 3 by four positioning rods 2, which improves the stability of the connection structure and thus ensures the stability of the rotation of the masking cylinder 304. The positioning block 401 is fixed to the two positioning rods 2 by two first positioning holes 402, which improves the positional stability of the positioning block 401 and thus ensures the positional stability of the scraper 403 installed on the positioning block 401. This ensures that the scraper 403 fits tightly with the inner wall of the masking cylinder 304, and that the scraper 403 can cleanly scrape the paint off the inner wall of the masking cylinder 304, further improving the uniformity of spraying and improving the quality of the product.

[0037] It also includes a glue-connecting assembly 5, which includes a second motor 501 and a belt conveyor mechanism 502. The second motor 501 is connected to the belt conveyor mechanism 502 for power transmission. The belt conveyor mechanism 502 is located below the larger diameter end of the shielding cylinder 304. A positioning plate 503 is provided on the side of the belt conveyor mechanism 502. A second positioning hole 504 is opened on the positioning plate 503. The positioning plate 503 is sleeved on the positioning rod 2 through the second positioning hole 504.

[0038] The paint that drips from the inner wall of the masking cylinder 304 via the adhesive receiving assembly 5 is collected by the scraper 403. After falling from the masking cylinder 304, the paint lands on the belt conveyor mechanism 502, which then transports it to a collection point to prevent paint from contaminating the working environment.

[0039] The belt conveyor mechanism 502 is driven by the second motor 501. This structure is a standard setting and will not be described in detail here.

[0040] It also includes an isolation air knife 601 assembly 6, which is located above the shielding cylinder 304. The isolation air knife 601 assembly 6 includes an air knife 601, and positioning brackets 602 are provided on both sides of the air knife 601. The positioning brackets 602 are located on the positioning rod 2.

[0041] The air knife 601 can form an air curtain around the shielding component 3. The air curtain can confine the sprayed mist of paint within a certain range, preventing the paint from flying everywhere and affecting the workers' working environment, thereby affecting the workers' safety.

[0042] In use, the mounting plate 1 is passed through the glue gun of the spray gun, and then the mounting plate 1 is fixed to the spray gun. The paint is sprayed from the glue gun in a mist-like, fan-shaped distribution. The edges of the mist-like paint are uneven, with less paint at the edges and more paint in the center. The mist-like paint enters the masking cylinder 304 from the larger diameter end and exits from the smaller diameter end. The inner wall of the masking cylinder 304 masks the uneven edges and areas with less paint, allowing this portion of paint to be directly sprayed onto the inner wall of the masking cylinder 304. The fan-shaped mist-like paint sprayed from the masking cylinder 304 has smooth edges and uniform paint content, resulting in a uniform paint thickness on the automotive parts and improving paint quality. The quality of the product is ensured by the rotation of the masking cylinder 304 driven by the first motor 701. As the masking cylinder 304 rotates, its inner wall moves along the scraper 403, causing the scraper 403 to scrape off the paint sprayed on its inner wall. The scraped paint falls from the masking cylinder 304 onto the belt conveyor 502 of the adhesive receiving assembly 5, and is then transported to the collection position by the belt conveyor 502 driven by the second motor 501. At the same time, high-pressure air is supplied to the air knife 601, which forms an air curtain above the masking cylinder 304 to prevent the misty paint from the masking cylinder 304 from flying around and affecting the working environment, thus improving the safety of the workers.

[0043] In practical use, the first motor 701 and the second motor 501 are cylinder motors. The cylinder motors can output high torque power, which further ensures that the scraper 403 can scrape the paint off the inner wall of the masking cylinder 304.

[0044] A diaphragm is installed on the belt conveyor mechanism 502 to prevent paint from adhering to the conveyor belt and to facilitate the unified collection of paint.

[0045] Example 2:

[0046] It also includes a glue receiving hopper, which is located below the larger diameter end of the shielding cylinder 304. A positioning plate 503 is provided on the side of the glue receiving hopper, and a second positioning hole 504 is opened on the positioning plate 503. The positioning plate 503 is sleeved on the positioning rod 2 through the second positioning hole 504.

[0047] In some smaller spaces, a glue collection hopper is placed below the masking cylinder 304, through which the paint scraped off by the scraper 403 is collected directly.

[0048] This utility model has a simple structure, improves the coating quality, increases the product qualification rate, and is suitable for widespread application.

[0049] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. In the absence of conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A spray masking device, characterized in that, The system includes a mounting plate, on which a power assembly is provided. A positioning rod is provided on one side of the mounting plate, and a clearance hole is provided in the middle. A shielding assembly is provided at one end of the positioning rod, and a scraping assembly is provided in the middle of the positioning rod between the mounting plate and the shielding assembly. The shielding assembly includes an annular mounting base with a slot on one side. A bearing is installed in the slot, and the outer ring of the bearing is fixedly connected to the mounting base. A shielding cylinder is installed in the inner ring of the bearing. The shielding cylinder has a trumpet-shaped structure, and a connecting plate is provided on the outer wall of its larger diameter end. The shielding cylinder is connected to the power assembly for power transmission. The central axis of the shielding cylinder is coaxial with the central axis of the clearance hole. The adhesive scraping assembly includes a positioning block, on which a scraper is provided. The scraper is inclined and abuts against the inner wall of the shielding cylinder.

2. The spray masking device according to claim 1, characterized in that, The power assembly includes a first motor, a drive wheel is connected to the output shaft of the first motor, the outer wall of the shielding cylinder is fixedly sleeved on the driven wheel, and the drive wheel and the driven wheel are connected by a belt.

3. The spray masking device according to claim 1, characterized in that, The mounting plate is evenly provided with 4 positioning rods, and the positioning block has 2 first positioning holes. The 2 first positioning holes are respectively fitted onto 2 adjacent positioning rods. The positioning block is also provided with mounting holes, and the scraper is fixed to the positioning block with bolts through the mounting holes.

4. A spray masking device according to claim 1, characterized in that, It also includes a glue-bonding assembly, which includes a second motor and a belt conveyor mechanism. The second motor is connected to the belt conveyor mechanism via power transmission. The belt conveyor mechanism is located below the end of the shielding cylinder with the larger diameter. The belt conveyor mechanism has a positioning plate on its side, and the positioning plate has a second positioning hole. The positioning plate is fitted onto the positioning rod through the second positioning hole.

5. A spray masking device according to claim 1, characterized in that, It also includes a glue-receiving hopper, which is located below the end of the shielding cylinder with the larger diameter. The glue-receiving hopper has a positioning plate on its side, and the positioning plate has a second positioning hole. The positioning plate is fitted onto the positioning rod through the second positioning hole.

6. A spray masking device according to claim 1, characterized in that, It also includes an isolation air knife assembly, which is located above the shielding cylinder. The isolation air knife assembly includes an air knife, and positioning brackets are provided on both sides of the air knife. The positioning brackets are located on a positioning rod.

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