Spraying device for powder coating film forming detection

Abstract

The utility model relates to the technical field of powder coating, in particular to a spraying device for film forming detection of powder coating, which comprises a spraying box chamber, a partition plate is arranged in the spraying box chamber, an inner cavity of the spraying box chamber is divided into an installation cavity and a spraying cavity by the partition plate, a spray gun component is installed in the installation cavity, and a test plate is installed in the spraying cavity. The spray gun assembly comprises a nozzle, and the nozzle penetrates through the partition plate and communicates with the spray head cavity. The test plate is of a flat plate-shaped structure, the test plate is vertically arranged in the spraying cavity, the side face of the test plate is right opposite to the nozzle, a material spraying face is arranged on the face, facing the nozzle, of the test plate in a protruding mode, and the material spraying face is right opposite to the nozzle; according to the utility model, a plurality of groups of spray gun assemblies are arranged in the spraying box chamber, different powder coatings are sprayed at the same time, various parameters of the powder coatings can be adaptively adjusted, the test range is widened, and the test effect is convenient to observe.

Description

Technical Field

[0001] The utility model relates to the technical field of powder coatings, in particular to a spraying device for powder coating film formation detection. Background Art

[0002] Powder coating is a solid granular coating, generally composed of resin, pigment, curing agent and additives. Usually, thermosetting polyester resin and curing agent are the main film-forming substances of powder coating. During the drying process, the resin first melts and then solidifies after chemical cross-linking to form a smooth and hard coating film. Powder coating is often used for coating metal surfaces to provide corrosion resistance, wear resistance and beautiful surface protection. Compared with liquid coatings, powder coatings have the advantages of environmental protection, easy handling and high efficiency, so they are widely used in industrial and commercial applications. At present, powder coating film formation detection is one of the important steps to ensure the quality of coatings. Generally, film formation detection includes the following aspects: appearance inspection, film thickness measurement, adhesion test, wear resistance test, corrosion resistance test, etc. In order to ensure the accuracy of the detection, it is usually necessary to spray in a spray room to ensure that the film forming conditions are basically the same. For example, the Chinese patent CN209406685U discloses a powder coating spray room, including a spray room body, a placement unit in the spray room body, and the placement unit includes a first support rod and a second support rod. The first support rod is located above the second support rod, and a hanging ring is provided on the front side of the first support rod. The upper end surface of the second support rod is provided with a first fixed rod and a baffle, and the baffle is connected to the second support rod through the first fixed plate; a window is provided on the front side of the spray room body, and a spacer is provided at the lower front side of the spray room body. The above patent fixes the metal sheet to ensure that the powder coating on the metal sheet is evenly attached; the distance between the spray gun and the metal sheet is increased to reduce the defect points of the powder coating on the metal sheet after film formation. However, the spraying room of the above patent is only suitable for spraying a single powder coating. When spraying multiple powder coatings, the spray gun needs to be replaced frequently. Multiple samples are needed for spraying testing. By changing the ratio of the internal formula of the sample, the best film-forming formula is detected. Therefore, the spraying efficiency of the above patent is not high and is not suitable for film-forming detection of powder coatings.

[0003] Therefore, a spraying device for powder coating film formation detection is provided, which is suitable for film formation spraying of various samples. It is necessary for technical personnel in this field to ensure the accuracy and efficiency of the experiment. Utility Model Content

[0004] The utility model aims to provide a spraying device for powder coating film formation detection, so as to solve the technical problem that in the prior art, when spraying powder coating film formation, it is only suitable for spraying a single powder coating and cannot spray multiple powder coatings.

[0005] The utility model solves the technical problem by adopting the following technical solution: a spraying device for powder coating film formation detection, comprising a spraying box chamber, wherein a partition is arranged in the spraying box chamber, the partition divides the inner cavity of the spraying box chamber into an installation cavity and a spraying cavity, a spray gun assembly is installed in the installation cavity, and a test plate is installed in the spraying cavity; the spray gun assembly comprises a nozzle, the nozzle passes through the partition and is connected to the spraying cavity; the test plate is a flat plate-shaped structure, the test plate is vertically arranged in the spraying cavity, the side of the test plate faces the nozzle, a spraying surface is convexly arranged on the surface of the test plate facing the nozzle, and the spraying surface faces the nozzle.

[0006] Furthermore, the spray gun assembly is provided with multiple ones which are evenly arranged in the installation cavity. The spray gun assembly also includes a gun body and a spray gun bracket. The gun body is provided with an air pump and a spray gun switch. The nozzle is connected to the interior of the gun body, including one end of the spray gun bracket which is detachably connected to the bottom of the installation cavity, and the gun body is fixedly connected to the other end of the spray gun bracket.

[0007] Furthermore, a top plate is provided on the top opening surface of the spray box chamber, the top plate faces the spray cavity and is detachably connected to the spray box chamber.

[0008] Furthermore, a coating plate bracket is provided in the spraying cavity, the test plate is plug-in connected to the coating plate bracket, and the top of the test plate abuts against the top plate.

[0009] Furthermore, the coating plate bracket is provided with multiple ones and is evenly arranged in the spraying cavity, the coating plate bracket is vertically arranged with the test plate, and a slot consistent with the thickness of the test plate is provided on the coating plate bracket, and the test plate is fitted and connected in the slot.

[0010] Furthermore, a heating element is provided on the inner wall of the spraying cavity, and the heating element faces the side of the test plate away from the nozzle.

[0011] Furthermore, the heating element is a heating rod.

[0012] The beneficial effects of the utility model are as follows: the utility model installs multiple groups of spray gun components into the spray chamber, realizes the centralized test of the film-forming effects of multiple powder coatings, sprays different powder coatings at the same time, can adaptively adjust various parameters of the powder coatings, and improves the test range and test effect. At the same time, the utility model also adds a spraying surface on the test plate, so that the operator can more accurately and intuitively distinguish the effects and differences between the film-forming of a single powder coating and the film-forming of a mixed plurality of powder coatings from the test plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a stereoscopic diagram of a spraying device for powder coating film formation detection of the utility model.

[0014] Figure 2 yes Figure 1 Exploded diagram.

[0015] Figure 3 It is a top view of the spraying device for powder coating film formation detection of the utility model.

[0016] Figure 4 yes Figure 3 Sectional view along AA.

[0017] The components in the accompanying drawings are marked as follows: 10. Spray box chamber; 11. Mounting cavity; 12. Spraying cavity; 13. Heating element; 14. Test plate; 16. Spraying surface; 17. Top plate; 18. Coating plate bracket; 19. Partition; 20. Spray gun assembly; 21. Air pump; 22. Nozzle; 23. Gun body; 24. Spray gun switch; 25. Spray gun bracket. DETAILED DESCRIPTION

[0018] Now the utility model is described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, which only illustrates the basic structure of the utility model in a schematic manner, so it only shows the components related to the utility model.

[0019] See also Figure 1 , Figure 4 The utility model provides a spraying device for powder coating film formation detection, including a spraying chamber 10, the spraying chamber 10 is a square shell structure with an open top, and a partition 19 is provided in the spraying chamber 10, and the partition 19 divides the internal cavity of the spraying chamber 10 into an installation cavity 11 and a spraying cavity 12. A spray gun assembly 20 is installed in the installation cavity 11, and a test plate 14 is installed in the spraying cavity 12. The spray gun assembly 20 is used to spray powder coating on the test plate 14 to realize a spraying test on the film formation effect of the powder coating.

[0020] Furthermore, the spray gun assembly 20 includes a gun body 23, which is filled with powder coating. An air pump 21, a nozzle 22 and a spray gun switch 24 are provided on the gun body 23. One end of the nozzle 22 is connected to the interior of the gun body 23, and the other end of the nozzle 22 passes through the partition 19 and is connected to the spray cavity 12. The spray gun switch 24 is used to control the switch of the nozzle 22. The air pump 21 is connected to the interior of the gun body 23 to introduce high-pressure gas into the gun body 23 and then spray the powder coating in the gun body 23 from the nozzle 22 to achieve spraying of the powder coating.

[0021] In this embodiment, the spray gun switch 24 is a solenoid valve. When the spray gun switch 24 is turned on, the solenoid valve opens, thereby opening the nozzle 22. When the spray gun switch 24 is turned off, the solenoid valve closes, thereby closing the nozzle 22, thereby achieving stop control of the nozzle 22.

[0022] The spray gun assembly 20 also includes a spray gun bracket 25, one end of which is detachably connected to the bottom of the installation cavity 11 by means of a locking member such as a bolt or a screw, and the gun body 23 is fixedly connected to the other end of the spray gun bracket 25. The spray gun assembly 20 is provided with a plurality of spray guns and evenly arranged in the installation cavity 11, so as to realize the simultaneous spraying of powder coatings with different proportions, and can adaptively adjust various parameters of the powder coatings, improve the test range, and facilitate observation of the test effect. At the same time, the spray gun assembly 20 can be quickly installed in the installation cavity 11, which is convenient for disassembly and replacement. Since the top surface of the installation cavity 11 is open, when the proportion parameters of the powder coating need to be changed, it only needs to be manually dismantled quickly and can be directly replaced. Compared with the solution in the prior art that the spray gun is installed in a closed cavity, the utility model can facilitate the operator to replace the spray gun assembly 20 as a whole while ensuring the spraying effect, thereby improving the use effect and application scope of the utility model.

[0023] Furthermore, a top plate 17 is provided on the top opening surface of the spray chamber 10, and the top plate 17 faces the spray cavity 12 and is detachably connected to the spray chamber 10 by means of locking members such as bolts or screws. When in use, the top plate 17 is used to seal the spray cavity 12, thereby ensuring the airtightness of the test.

[0024] The test plate 14 is a flat plate-shaped structure, and is vertically arranged in the spraying cavity 12. The side of the test plate 14 faces the nozzle 22. A coating plate bracket 18 is provided in the spraying cavity 12, and the test plate 14 is plugged and connected to the coating plate bracket 18 to ensure stability in use and facilitate rapid installation or removal by operators.

[0025] In this embodiment, the coating plate bracket 18 is provided with multiple and evenly arranged in the spraying cavity 12, and the coating plate bracket 18 is vertically arranged with the test plate 14. The coating plate bracket 18 is provided with a slot (not marked in the figure) with the same thickness as the test plate 14, and the test plate 14 is connected in the slot. When in use, the test plate 14 is plugged in and connected to the slot to complete quick installation.

[0026] The top of the test plate 14 abuts against the top plate 17, and a heating element 13 is further provided on the inner wall of the spray cavity 12, the heating element 13 is directly opposite to the side of the test plate 14 away from the nozzle 22, and the heating element 13 is used to heat the test plate 14, thereby allowing the powder coating to form a film quickly, especially for powder coatings containing thermosetting resin components, to improve the film forming efficiency, and for electrostatic spraying, the heating element 13 can be turned off to ensure experimental stability.

[0027] In this embodiment, the heating method of the heating element 13 adopts resistive heating. At this time, the heating element 13 can be a heating rod, a heating wire, a heating plate, etc. The heating method of the heating element 13 can also adopt electromagnetic induction heating. At this time, the heating element 13 can be a heating coil.

[0028] Furthermore, a spraying surface 16 is convexly provided on the surface of the test plate 14 facing the nozzle 22 , and the spraying surface 16 is directly opposite to the nozzle 22 , so that the operator can more accurately and intuitively distinguish the film-forming effects and differences between powder coatings with different ratios from the test plate 14 .

[0029] The specific operation method of the present invention is as follows: Step 1: Install the spray gun assembly 20 into the installation cavity 11 in the spray box chamber 10, fill the powder coating into the gun body 23, and complete the addition of the test raw materials.

[0030] Step 2: Insert the test panel 14 into the spraying cavity 12 in the spraying chamber 10, install the top plate 17, and complete the installation of the test panel.

[0031] Step 3: Start the spray gun assembly 20 and the heating element 13 at the same time, so that the powder coating is sprayed onto the test plate 14 and solidified into a film, thereby completing the test.

[0032] The utility model installs multiple groups of spray gun assemblies 20 into the spray chamber 10 to realize the centralized spraying of multiple powder coatings. Different powder coatings are sprayed at the same time, and various parameters of the powder coatings can be adaptively adjusted to improve the test range and facilitate observation of the test effect. At the same time, the utility model also adds a spraying surface 16 on the test plate 14, so that the operator can more accurately and intuitively distinguish the film-forming effects and differences between powder coatings with different ratios from the test plate 14.

[0033] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope 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 spraying device for powder coating film formation detection, comprising a spraying chamber (10), characterized in that: A partition (19) is provided in the spray chamber (10), and the partition (19) divides the internal cavity of the spray chamber (10) into an installation cavity (11) and a spray cavity (12); a spray gun assembly (20) is installed in the installation cavity (11), and a test plate (14) is installed in the spray cavity (12); the spray gun assembly (20) includes a nozzle (22), and the nozzle (22) passes through the partition (19) and is connected to the spray cavity (12); the test plate (14) is a flat plate structure, and is vertically arranged in the spray cavity (12), with the side of the test plate (14) facing the nozzle (22); a spraying surface (16) is convexly provided on the surface of the test plate (14) facing the nozzle (22), and the spraying surface (16) faces the nozzle (22).

2. The spraying device for detecting powder coating film formation according to claim 1, characterized in that: The spray gun assembly (20) is provided with a plurality of spray guns and is evenly arranged in the installation cavity (11). The spray gun assembly (20) further comprises a gun body (23) and a spray gun bracket (25). The gun body (23) is provided with an air pump (21) and a spray gun switch (24). The nozzle (22) is connected to the inside of the gun body (23). One end of the spray gun bracket (25) is detachably connected to the bottom of the installation cavity (11), and the gun body (23) is fixedly connected to the other end of the spray gun bracket (25).

3. The spraying device for powder coating film formation detection according to claim 1, characterized in that: A top plate (17) is provided on the top opening surface of the spray chamber (10); the top plate (17) faces the spray cavity (12) and is detachably connected to the spray chamber (10).

4. The spraying device for detecting powder coating film formation according to claim 3, characterized in that: A coating plate support (18) is provided in the spraying cavity (12), the test plate (14) is pluggably connected to the coating plate support (18), and the top of the test plate (14) abuts against the top plate (17).

5. The spraying device for powder coating film formation detection according to claim 4, characterized in that: The coating plate bracket (18) is provided with a plurality of plates and is evenly arranged in the spraying cavity (12). The coating plate bracket (18) and the test plate (14) are arranged vertically. The coating plate bracket (18) is provided with a slot having the same thickness as the test plate (14), and the test plate (14) is connected in the slot.

6. The spraying device for detecting powder coating film formation according to claim 1, characterized in that: A heating element (13) is also provided on the inner wall of the spraying cavity (12), and the heating element (13) faces a side of the test plate (14) away from the nozzle (22).

7. The spraying device for detecting powder coating film formation according to claim 6, characterized in that: The heating element (13) is a heating rod.

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