Spraying guide plate and spray gun

Abstract

The utility model relates to the field of powder spraying, and provides a spraying guide plate and a spray gun, the spraying guide plate comprises a guide plate body, the guide plate body is provided with a first end face and a second end face which are arranged away from each other along the axis direction of the guide plate body, and the first end face is provided with a connecting part and a guide part; the connecting part is arranged at the axis position of the flow guide plate body, and the flow guide part is arranged on the peripheral side of the connecting part in the radial direction of the flow guide plate body; wherein a plurality of flow guide holes are formed in the flow guide part, and the flow guide holes penetrate through the flow guide part and the second end face in the axis direction of the flow guide plate body. According to the powder spraying device, the spraying area and uniformity of powder spraying can be effectively improved, and then the spraying efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of powder spraying, in particular to a spraying guide plate and a spray gun. Background Art

[0002] Powder spraying is the process of spraying powder coating onto the surface of a workpiece using powder spraying equipment (such as a powder spray gun). Under the action of static electricity, the powder will be evenly adsorbed on the surface of the workpiece to form a powder coating; the powder coating is baked at high temperature to level and solidify, becoming a final coating with different effects.

[0003] However, the existing powder spray guns have poor uniformity and spraying efficiency during spraying, which affects the spraying quality of the workpiece. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the related art. To this end, the utility model proposes a spraying guide plate, which can effectively increase the spraying area and uniformity of powder spraying, and further improve the spraying efficiency.

[0005] The spray guide plate according to the first embodiment of the utility model comprises:

[0006] A deflector body, the deflector body having a first end face and a second end face which are arranged in opposite directions along the axial direction thereof, a connecting portion and a deflector portion being arranged on the first end face, the connecting portion being arranged at the axial center position of the deflector body, and the deflector portion being arranged at the outer peripheral side of the connecting portion along the radial direction of the deflector body;

[0007] Wherein, the guide portion is provided with a plurality of guide holes, and the guide holes penetrate the guide portion and the second end surface along the axial direction of the guide plate body.

[0008] According to an embodiment of the utility model, a plurality of the guide holes are arranged in a circular array along the radial direction of the guide plate body.

[0009] According to an embodiment of the present invention, the diameter of the guide hole is gradually reduced from the first end surface toward the second end surface.

[0010] According to an embodiment of the present invention, the diameter of the guide hole is gradually expanded from the first end surface toward the second end surface.

[0011] According to an embodiment of the utility model, the cross section of the guide plate body perpendicular to its axis is circular.

[0012] According to an embodiment of the present invention, the arrangement density of the guide holes on the guide plate body gradually increases from the inner edge of the guide portion toward the outer edge of the guide portion.

[0013] According to an embodiment of the utility model, the connecting portion is arranged to protrude in a direction away from the second end surface, and the connecting portion is connected to the guide portion by a circular arc transition.

[0014] According to an embodiment of the present invention, the shape of the guide hole includes at least one of circular, polygonal, elliptical or irregular.

[0015] According to an embodiment of the utility model, the guide plate body is provided with an electrode hole arranged along the axis thereof, and the electrode hole axially penetrates the connecting portion and the second end surface.

[0016] The spray gun according to the second embodiment of the utility model comprises:

[0017] Spray gun body;

[0018] A nozzle is connected to the end of the spray gun body, and a spray hole is provided on the nozzle. As mentioned above, the spray guide plate is arranged in front of the spray hole.

[0019] The above one or more technical solutions in the embodiments of the utility model have at least one of the following technical effects:

[0020] The present application provides a plurality of guide holes on the guide portion of the spray guide plate, wherein the guide holes penetrate the guide portion and the second end face along the axial direction of the guide plate body; thus, during spraying, the powder coating flowing through the guide portion can be guided to the second end face through the guide holes, so as to increase the coverage area of ​​the entire spray guide plate during spraying, reduce dead angles during spraying, and thus increase the uniformity during spraying, thereby improving the spraying efficiency while providing the spraying quality.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of an embodiment of a spray guide plate provided by an embodiment of the utility model;

[0024] Figure 2 yes Figure 1 The structural diagram of the spray guide plate from another perspective;

[0025] Figure 3 yes Figure 1 Front view of the spray guide plate;

[0026] Figure 4 It is a front view of another embodiment of the spray guide plate provided by the embodiment of the utility model;

[0027] Figure 5 yes Figure 1 A longitudinal sectional view of an embodiment of a spray guide plate;

[0028] Figure 6 yes Figure 1 A longitudinal sectional view of another embodiment of the spray guide plate;

[0029] Figure 7 yes Figure 1 A longitudinal sectional view of yet another embodiment of a spray guide plate.

[0030] Reference numerals:

[0031] 10. Spray guide plate;

[0032] 100, guide plate body; 110, first end surface; 111, connecting portion; 111a, electrode hole; 112, guide portion; 112a, guide hole; 120, second end surface. DETAILED DESCRIPTION

[0033] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0034] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0035] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0036] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0038] 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 baked at high temperature to level and solidify, becoming a final coating with different effects.

[0039] However, the existing powder spray guns have poor uniformity and spraying efficiency during spraying, which affects the spraying quality of the workpiece.

[0040] In view of this, the utility model provides a spray guide plate and a spray gun, aiming to solve the problem that the existing powder spray gun has poor uniformity and spray efficiency during spraying, which affects the spraying quality of the workpiece. Figures 1 to 7 The utility model provides an embodiment of the spray guide plate.

[0041] In the utility model embodiment, refer to Figure 1 to Figure 2The spray guide plate 10 includes a guide plate body 100, and the guide plate body 100 has a first end face 110 and a second end face 120 arranged opposite to each other along its axial direction. The first end face 110 is provided with a connecting portion 111 and a guide portion 112, the connecting portion 111 is arranged at the axial center position of the guide plate body 100, and the guide portion 112 is arranged on the outer peripheral side of the connecting portion 111 along the radial direction of the guide plate body 100; wherein, the guide portion 112 is provided with a plurality of guide holes 112a, and the guide holes 112a penetrate the guide portion 112 and the second end face 120 along the axial direction of the guide plate body 100.

[0042] The guide plate body 100 serves as the basic structure of the entire spray guide plate 10 and provides support and installation positions for other components.

[0043] The first end face 110 and the second end face 120 define the direction of powder coating entering and flowing out. The first end face 110 is usually connected to the spray gun, while the second end face 120 faces the workpiece to be sprayed, ensuring that the powder coating can flow along the predetermined path from the spray gun to the workpiece surface.

[0044] The connecting portion 111 is located at the axial center of the first end surface 110 and is used to stably connect the spray guide plate 10 to the spray gun or other spray equipment, thereby ensuring a firm connection between the spray guide plate 10 and the spray gun during the spraying process to prevent the spray guide plate 10 from falling off or loosening due to vibration or impact.

[0045] The guide portion 112 extends from the outer peripheral side of the connecting portion 111 along the radial direction of the guide plate body 100 to guide and control the flow direction and speed of the powder coating, thereby ensuring that the powder coating can be evenly distributed on the surface of the workpiece to be sprayed, and avoiding coating accumulation or uneven spraying.

[0046] The guide hole 112a passes through the guide portion 112 and the second end face 120 along the axial direction of the guide plate body 100, and is a channel for the powder coating to flow from the spray gun to the surface of the workpiece. Through the design of multiple guide holes 112a, the workpiece area covered by the powder coating can be increased. Ensure that the powder coating can reach every corner of the workpiece and reduce the unsprayed area. By accurately controlling the size, number and distribution of the guide holes 112a, the flow speed and direction of the powder coating can be optimized, thereby improving the uniformity of the spraying. Due to the increase in the spraying area and the improvement in the uniformity of the spraying, the number of repeated spraying can be reduced, saving spraying materials and time, thereby improving the spraying efficiency.

[0047] The present application provides a plurality of guide holes 112a on the guide portion 112 of the spray guide plate 10, wherein the guide holes 112a penetrate the guide portion 112 and the second end face 120 along the axial direction of the guide plate body 100; thus, during spraying, the powder coating flowing through the guide portion 112 can be guided to the second end face 120 through the guide holes 112a, so as to increase the coverage area of ​​the entire spray guide plate 10 during spraying, reduce the spraying dead angle, and thus increase the uniformity during spraying, thereby improving the spraying efficiency while providing the spraying quality.

[0048] Reference Figure 3 and Figure 4 According to an embodiment of the present invention, a plurality of guide holes 112 a are arranged in a circular array along the radial direction of the guide plate body 100 .

[0049] It is understandable that the guide holes 112a arranged in a circular array ensure that the powder coating can be evenly distributed in the radial direction. This helps to achieve a more uniform coating thickness during the spraying process and reduce coating quality problems caused by uneven distribution of the coating. Through the circular array arrangement, more guide holes 112a can work simultaneously, thereby increasing the spraying area. This not only improves the spraying efficiency, but also ensures full coverage on the surface of large or complex workpieces. The guide holes 112a arranged in a circular array can cover a wider spraying area, especially the edges and corners of the workpiece surface. This helps to reduce spraying dead angles and ensure that every part of the workpiece is evenly sprayed. The design of the guide holes 112a arranged in a circular array makes the adjustment of spraying parameters (such as spraying pressure, spraying speed, etc.) more flexible. By adjusting these parameters, the spraying effect can be further optimized to meet different spraying requirements.

[0050] In one implementation, the number of the guide holes 112 a provided on the guide portion 112 and the sizes of the guide holes 112 a can be differentiated as needed and are not particularly limited herein.

[0051] Reference Figure 7 According to an embodiment of the present invention, the diameter of the guide hole 112 a is gradually reduced from the first end surface 110 toward the second end surface 120 .

[0052] It is understandable that the tapered aperture design can gradually reduce the flow rate of the powder coating as it flows through the guide hole 112a. This helps to achieve more refined flow control during the spraying process, so that the coating can be evenly distributed on the surface of the workpiece, avoiding the problem of excessive accumulation of coating or uneven spraying. As the aperture gradually decreases, the resistance encountered by the coating when passing through the guide hole 112a will also gradually increase, which helps to reduce the waste of coating during the spraying process. Especially in the later stages of spraying, the tapered aperture design can ensure that the flow rate of the coating gradually decreases, making the distribution of the coating more uniform, avoiding waste caused by excessive coating. Through the tapered aperture design, uniform deposition of the coating on the surface of the workpiece can be achieved. This uniform deposition helps to reduce defects such as bubbles and pinholes in the coating, and improve the adhesion and durability of the coating. At the same time, due to the gradual reduction in the flow rate of the coating, the atomization and splashing phenomena generated during the spraying process will also be reduced, further improving the spraying quality.

[0053] Reference Figure 6 According to an embodiment of the present invention, the diameter of the guide hole 112 a is gradually expanded from the first end surface 110 toward the second end surface 120 .

[0054] It is understandable that the gradually expanding aperture design makes the powder coating flow faster when passing through the guide hole 112a due to the gradual increase in aperture, thereby forming a strong impact force at the outlet. This impact force helps to spray the coating evenly onto the surface of the workpiece, especially for workpieces with rough or uneven surfaces, so that it can better cover and fill.

[0055] The gradually expanding aperture design can increase the flow rate of the coating during the spraying process, so that more coating is sprayed onto the workpiece surface per unit time. This not only improves the efficiency of spraying, but also speeds up the spraying process, thereby improving production efficiency. Since the aperture is smaller starting from the first end face 110, this design can reduce the possibility of large particles or impurities entering the hole to a certain extent, thereby reducing the risk of hole blockage. This is crucial to maintaining the stability and continuity of the spraying process.

[0056] Of course, in other embodiments, the diameter of the guide hole 112 a may also be arranged to be straight from the first end surface 110 toward the second end surface 120 .

[0057] Reference Figure 1 and Figure 2 According to one embodiment of the present invention, the cross section of the guide plate body 100 perpendicular to its axis is circular.

[0058] It can be understood that the circular cross-section makes the guide plate body 100 have a uniform curvature in the radial direction, which helps to achieve a more uniform distribution of paint during the spraying process. This uniform distribution can ensure that all areas of the workpiece surface obtain the same paint coverage, improving the uniformity and quality of the spraying. The circular cross-sectional design enables the guide plate to cover a wider spraying area, especially for the edges and corners of the workpiece surface. Due to the symmetry of the circular cross-section, the paint can more easily reach these difficult-to-spray areas during the spraying process, reducing the spraying dead angle and improving the spraying efficiency. The circular cross-sectional shape has lower resistance in fluid dynamics, which helps to reduce the energy loss of the paint when it flows through the guide plate. This design can reduce energy consumption during the spraying process and improve the overall efficiency of the spraying system.

[0059] In one embodiment, the arrangement density of the guide holes 112 a on the guide plate body 100 gradually increases from the inner edge of the guide portion 112 toward the outer edge of the guide portion 112 .

[0060] It is understandable that, as the density of the guide holes 112a gradually increases, the paint flow from the inner edge to the outer edge will also increase accordingly. This helps to ensure that the paint distribution on the workpiece surface is more even during the spraying process. Especially in larger areas on the workpiece surface, this design can ensure that the paint can be fully covered to avoid insufficient paint or uneven spraying. Since the density of the guide holes 112a at the outer edge is large, the paint flow rate also increases accordingly. This allows the paint to cover the edge area of ​​the workpiece surface more quickly during the spraying process, thereby improving the spraying efficiency. Especially in application scenarios where a large area of ​​the workpiece surface needs to be covered quickly, this design can significantly improve production efficiency.

[0061] Reference Figure 1 , Figure 2 and Figure 3 According to an embodiment of the present invention, the connecting portion 111 is convexly arranged in a direction away from the second end surface 120 , and the connecting portion 111 and the guide portion 112 are connected by an arc transition.

[0062] It is understandable that the raised design of the connection portion 111 increases the contact area between it and the spray gun or other connection equipment, thereby enhancing the stability of the connection. This design can reduce the risk of the connection becoming loose or falling off due to vibration or impact during the spraying process.

[0063] The use of an arc transition connection between the connection portion 111 and the guide portion 112 can effectively reduce stress concentration. During the spraying process, the force generated by the flow and impact of the paint may cause certain stresses on the connection portion 111. Through the arc transition, these stresses can be dispersed to a wider area, thereby reducing the risk of damage caused by stress concentration. At the same time, the ability of the spray guide plate 10 to guide the powder coating can be improved, reducing the accumulation of powder coating on the spray guide plate 10, and at the same time, the uniformity of the spraying can be improved.

[0064] Optionally, the shape of the guide hole 112a includes at least one of a circle, a polygon, an ellipse or a special shape.

[0065] It is understandable that the diversity of the shapes of the guide holes 112a increases the flexibility of the design. Designers can select the appropriate shape of the guide holes 112a according to specific needs and the shape of the workpiece to achieve the best spraying effect. Different workpiece shapes may require different spraying methods and spraying effects. By adjusting the shape of the guide holes 112a, it is possible to better adapt to different workpiece shapes and ensure that the paint can be evenly covered on the workpiece surface.

[0066] Reference Figure 1 and Figure 2 According to an embodiment of the present invention, the guide plate body 100 is provided with an electrode hole 111 a arranged along the axis thereof, and the electrode hole 111 a axially penetrates the connecting portion 111 and the second end surface 120 .

[0067] It is understandable that the design of the electrode hole 111a allows the guide plate to be connected to the electrostatic spraying equipment, and the electrostatic effect is used to make the paint more evenly adsorbed on the surface of the workpiece, thereby improving the uniformity and adhesion of the spraying.

[0068] The utility model also provides a spray gun, which includes a spray gun body, a nozzle and a spray guide plate 10, wherein the nozzle is connected to the end of the spray gun body, a spray hole is provided on the nozzle, and the spray guide plate 10 is provided in front of the spray hole. The specific structure of the spray guide plate 10 refers to the above embodiment; it can be understood that since the spray guide plate 10 is used in the spray gun, the embodiment of the spray gun includes all technical solutions of all embodiments of the spray guide plate 10, and the technical effects achieved are also exactly the same, which will not be repeated here.

[0069] Finally, it should be noted that the above implementation modes are only used to illustrate the present invention, rather than to limit the present invention. Although the present invention is described in detail with reference to the embodiments, a person skilled in the art should understand that various combinations, modifications or equivalent replacements of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and should be included in the scope of the claims of the present invention.

Claims

1. A spray guide plate, characterized in that: include: A deflector body, the deflector body having a first end face and a second end face which are arranged in opposite directions along the axial direction thereof, a connecting portion and a deflector portion being arranged on the first end face, the connecting portion being arranged at the axial center position of the deflector body, and the deflector portion being arranged at the outer peripheral side of the connecting portion along the radial direction of the deflector body; Wherein, the guide portion is provided with a plurality of guide holes, and the guide holes penetrate the guide portion and the second end surface along the axial direction of the guide plate body.

2. The spray guide plate according to claim 1, characterized in that: The guide holes are arranged in a circular array along the radial direction of the guide plate body.

3. The spray guide plate according to claim 1, characterized in that: The diameter of the guide hole is gradually reduced from the first end surface toward the second end surface.

4. The spray guide plate according to claim 1, characterized in that: The diameter of the guide hole is gradually expanded from the first end surface toward the second end surface.

5. The spray guide plate according to claim 1, characterized in that: The cross section of the guide plate body perpendicular to its axis is circular.

6. The spray guide plate according to any one of claims 1 to 5, characterized in that: The arrangement density of the guide holes on the guide plate body gradually increases from the inner edge of the guide portion toward the outer edge of the guide portion.

7. The spray guide plate according to any one of claims 1 to 5, characterized in that: The connecting portion is arranged to protrude in a direction away from the second end surface, and the connecting portion is connected to the guide portion by an arc transition.

8. The spray guide plate according to any one of claims 1 to 5, characterized in that: The shape of the guide hole includes at least one of circular, polygonal, elliptical or irregular.

9. The spray guide plate according to any one of claims 1 to 5, characterized in that: The guide plate body is provided with an electrode hole arranged along the axis thereof, and the electrode hole axially penetrates the connecting portion and the second end surface.

10. A spray gun, characterized in that: include: Spray gun body; A nozzle, the nozzle is connected to the end of the spray gun body, the nozzle is provided with a spray hole, and the spray guide plate as described in any one of claims 1 to 9 is arranged in front of the spray hole.

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