Impeller anti-wear surface coating thickness control method

Abstract

The invention provides a method for controlling the thickness of an anti-abrasion surface coating of an impeller. The method comprises the following steps that S1, a light source projects light spots to the surface of an impeller plane material; s2, an image acquisition device acquires a light spot image P1 of the surface of the impeller plane material and completes calibration; s3, setting parameters of a comparison model P0; s4, the spray gun sprays wear-resistant paint to the surface of the impeller plane material; s5, an image obtaining device obtains an impeller plane material surface light spot image and transmits beam angle data detected in real time to the controller; and S6, the controller compares the data in the S5 with the data in the S3, and when it is judged that the wear-resistant coating reaches the initial set value, work is stopped. According to the method for controlling the thickness of the anti-abrasion surface coating of the impeller, the spraying shape and the thickness of the coating can be automatically and accurately controlled according to set parameters, and the problem that the spraying thickness is not accurate during spraying of existing spraying equipment is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of impeller spraying, and in particular relates to a method for controlling the thickness of an impeller anti-wear surface coating. Background Art

[0002] When the impeller is working, it often attracts various sands and gravels. The sands and gravels passing through the impeller surface will cause different degrees of wear to the surface of the impeller. Therefore, the existing impeller surface is generally sprayed with an anti-wear coating to improve the wear resistance of the impeller. However, when spraying the existing impeller, workers generally hold a spray gun to spray, and the spraying operation on the workpiece is mainly performed by the spraying worker holding the spray gun. The paint outlet in the spray gun is controlled by a switch, and there are only two states: open and closed. After the paint outlet in the spray gun is opened, the sprayer manually controls the movement of the spray gun to perform the spraying operation on the surface of the workpiece to be sprayed. However, the manual spraying method cannot accurately control the spray thickness of the spray on the workpiece to be sprayed. In the prior art, there is also a method of automatically controlling the spray gun by mechanical equipment to spray the surface of the impeller surface material. During spraying, the coating thickness will also be affected by factors such as the concentration of the paint, so that the spraying thickness is not very accurate. Summary of the invention

[0003] In view of this, the present invention aims to propose a method for controlling the thickness of an impeller anti-wear surface coating to solve the problem of inaccurate spraying thickness in existing spraying methods.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0005] A method for controlling the thickness of an impeller anti-wear surface coating comprises the following steps:

[0006] S1, projecting a light spot onto the surface of the impeller surface material through a light source;

[0007] S2, obtaining the spot image P1 on the surface of the impeller surface material through an image acquisition device and completing the calibration;

[0008] S3, setting parameters of comparison model P0;

[0009] S4, spraying wear-resistant coating onto the surface of the impeller surface material through a spray gun;

[0010] S5, the image acquisition device acquires the light spot image on the surface of the impeller surface material, and transmits the data of the beam angle detected in real time to the controller;

[0011] S6. The controller compares the data in S5 with the data in S3, and stops working when it is determined that the wear-resistant coating reaches the initial set value.

[0012] Furthermore, the light source is mounted on a bracket.

[0013] Furthermore, the image acquisition device is a camera or a scanner; and both the camera and the scanner are of a type that can be connected to the controller signal.

[0014] Furthermore, the spot image is topologically optimized as required, and any shape is equivalent to a number of circles, on which basis the relationship between the beam angle and the coating thickness is established.

[0015] Furthermore, the light source is emitted from point 0, and a beam angle is formed with the light source emission point 0 as the vertex.

[0016] Furthermore, the method for setting the parameters of the comparison model P0 in step S3 is: setting the initial beam angle and the end beam angle according to the required spraying shape and coating thickness.

[0017] Furthermore, the comparison model P0 is a mathematical relationship that characterizes the beam angle emitted from the light source and the coating thickness, specifically: under the condition of the same coating area, beam angle a0 corresponds to coating thickness d0, beam angle a1 corresponds to coating thickness d1, and beam angle a2 corresponds to coating thickness d2.

[0018] Compared with the prior art, the method for controlling the thickness of the impeller anti-wear surface coating of the present invention has the following advantages:

[0019] (1) The method for controlling the thickness of the impeller anti-wear surface coating described in the present invention can automatically and accurately control the spraying shape and coating thickness according to the set parameters, effectively avoiding the problem of low efficiency of manual spraying work, and also solving the problem of inaccurate spraying thickness during spraying by existing spraying equipment, thereby avoiding material waste and reducing economic costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 It is a flow chart of the method for controlling the thickness of the anti-wear surface coating of an impeller according to an embodiment of the present invention;

[0022] Figure 2 A schematic diagram of a method for controlling the thickness of an impeller anti-wear surface coating according to an embodiment of the present invention;

[0023] Figure 3 Schematic diagram of the coating thickness comparison model P0 described in an embodiment of the present invention.

[0024] Description of reference numerals:

[0025] 100- bracket; 200- light source; 300- image acquisition device; 400- spray gun. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "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 present invention 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 present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0029] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0030] A method for controlling the thickness of an impeller anti-wear surface coating, such as Figures 1 to 3 As shown, the following steps are included:

[0031] S1, projecting a light spot onto the surface of the impeller surface material through the light source 200;

[0032] S2, obtaining the spot image P1 on the surface of the impeller surface material through an image acquisition device and completing the calibration;

[0033] S3, setting the parameters of the comparison model P0 in the controller, and setting the initial beam angle and the end beam angle according to the required spraying shape and coating thickness;

[0034] S4, the controller controls the spray gun 400 to spray the wear-resistant coating onto the surface of the impeller surface material to form a wear-resistant coating;

[0035] S5, the image acquisition device 300 acquires the light spot image on the surface of the impeller surface material, and transmits the data of the beam angle detected in real time to the controller;

[0036] S6. The controller compares the data in S5 with the data in S3, and when it is determined that the wear-resistant coating reaches the initial set value, the controller controls the spray gun 400 to stop working.

[0037] It should be noted that the spot image is topologically optimized as required, and any shape is equivalent to a number of circles, on which the relationship between the beam angle and the coating thickness is established.

[0038] The image acquisition device 300 is a camera or a scanner; and both the camera and the scanner are of a type that can be connected to the controller signal.

[0039] The spray gun 400 may be any spray gun that can be connected to a controller signal.

[0040] Preferably, the controller is a computer.

[0041] For convenient operation, the light source 200 is mounted on the bracket 100 .

[0042] The light source 200 is emitted from the light source point 0, and a beam angle is formed with the light source emission point 0 as the vertex. The comparison model P0 is a mathematical relationship between the beam angle emitted from the light source 200 and the coating thickness. Specifically, under the condition of the same coating area, the beam angle a0 corresponds to the coating thickness d0, the beam angle a1 corresponds to the coating thickness d1, and the beam angle a2 corresponds to the coating thickness d2.

[0043] Through the method of this scheme, the spray shape and coating thickness can be automatically and accurately controlled according to the set parameters, effectively avoiding the problem of low efficiency of manual spraying work, and also solving the problem of inaccurate spray thickness when spraying with existing spraying equipment, avoiding material waste and reducing economic costs.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for controlling the thickness of an impeller anti-wear surface coating, characterized in that: The steps include: S1, the light source projects a light spot onto the surface of the impeller surface material; S2, the image acquisition device acquires the spot image P1 on the surface of the impeller surface material and completes the calibration; S3, setting parameters of comparison model P0; S4, spraying the wear-resistant coating onto the surface of the impeller surface material with a spray gun; S5, the image acquisition device acquires the light spot image on the surface of the impeller surface material, and transmits the data of the beam angle detected in real time to the controller; S6. The controller compares the data in S5 with the data in S3, and stops working when it is determined that the wear-resistant coating reaches the initial set value.

2. The method for controlling the thickness of an impeller anti-wear surface coating according to claim 1, characterized in that: The light source is mounted on the bracket.

3. The method for controlling the thickness of an impeller anti-wear surface coating according to claim 1, characterized in that: The image acquisition device is a camera or a scanner; and both the camera and the scanner are of a type that can be connected to the controller signal.

4. The method for controlling the thickness of an impeller anti-wear surface coating according to claim 1, characterized in that: The spot image is topologically optimized as required, and any shape is equivalent to several circles, on which the relationship between the beam angle and the coating thickness is established.

5. The method for controlling the thickness of an impeller anti-wear surface coating according to claim 1, characterized in that: The light source is emitted from point 0, and a beam angle is formed with the light source emission point 0 as the vertex.

6. The method for controlling the thickness of an impeller anti-wear surface coating according to claim 1, characterized in that: The method for setting the parameters of the comparison model P0 in step S3 is: setting the initial beam angle and the end beam angle according to the required spraying shape and coating thickness.

7. The method for controlling the thickness of an impeller anti-wear surface coating according to claim 1, characterized in that: The comparison model P0 is a mathematical equation that characterizes the relationship between the beam angle emitted from the light source and the coating thickness. Specifically, under the condition of the same coating area, beam angle a0 corresponds to coating thickness d0, beam angle a1 corresponds to coating thickness d1, and beam angle a2 corresponds to coating thickness d2.

Images