Uniform paint spraying apparatus and method

Abstract

The application relates to the technical field of paint spraying equipment, and discloses a uniform paint spraying equipment and a paint spraying method. The uniform paint spraying equipment comprises a motor, a paint spraying pot used for spraying paint on a paint spraying part in a working state, a driving assembly with a driving rotating shaft driven by the motor, a driven rotating shaft and a lead screw driven to rotate by the driving rotating shaft, and a paint spraying part fixed to one end of the driven rotating shaft in the axial direction. The paint spraying part rotates with the driven rotating shaft. The paint spraying pot is connected with the lead screw through a lead screw seat, and the lead screw drives the paint spraying pot to ascend and descend in the axial direction. The uniform paint spraying equipment provided by the application can meet the paint spraying needs of different height surfaces of the paint spraying part, can make all surfaces of the paint spraying part be painted in almost the same time, can avoid painting another surface after the painted surface is dried, can avoid the color difference problem of the overall paint spraying after drying, can improve the uniformity of the paint spraying surface, can improve the paint spraying quality, and can improve the paint spraying efficiency.

Description

Technical Field

[0001] This application relates to the field of spray painting equipment technology, specifically to a uniform spray painting device and spray painting method. Background Technology

[0002] In daily life and production, it is often necessary to spray paint the surface of objects. Traditional spray painting is usually done manually, which can lead to uneven spraying and inconsistent paint thickness on the surfaces to be painted. In addition, different surfaces of the object to be painted cannot be painted simultaneously. During the flipping process, the painted surfaces may be contaminated, and sometimes the painted surfaces may need to be dried before another surface can be painted. The fact that the painting is not done at the same stage can cause color differences after the overall paint has dried, affecting the quality of the final product surface. Summary of the Invention

[0003] In view of this, this application provides a uniform painting device and painting method to solve the problem that the order of painting on different surfaces of an object can easily lead to uneven paint thickness and color differences on different surfaces.

[0004] In a first aspect, embodiments of this application provide a uniform painting device, comprising:

[0005] Electric motor;

[0006] A paint sprayer, used to spray paint onto parts when in operation;

[0007] The drive assembly has a drive rotating shaft driven by a motor, and a driven rotating shaft and a lead screw that are driven to rotate by the drive rotating shaft;

[0008] The painted part is fixed to one end of the driven rotating shaft along the axial direction; the painted part rotates with the driven rotating shaft;

[0009] The paint can is connected to the lead screw via a lead screw seat. The rotation of the lead screw causes the paint can to move up and down axially.

[0010] In some embodiments, a first driving wheel is fixedly connected to the driving rotating shaft, and a first driven wheel is fixedly connected to the driven rotating shaft. The first driving wheel and the first driven wheel are connected via a first belt so that the driving rotating shaft drives the driven rotating shaft to rotate.

[0011] In some embodiments, a second driving wheel is fixedly connected to the active rotating shaft, and a second driven wheel is fixedly connected to the lead screw. The second driving wheel and the second driven wheel are connected via a second belt so that the active rotating shaft drives the lead screw to rotate.

[0012] In some embodiments, the circumferential outer surface of the lead screw is provided with an external thread, and the lead screw seat is provided with an internal thread corresponding to the external thread. The lead screw rotates to drive the lead screw seat to rise and fall. The lead screw seat is fixedly connected to a fixed seat, and the paint sprayer is installed on the fixed seat.

[0013] In some embodiments, the uniform spraying equipment further includes a slide rail, which is arranged parallel to the lead screw; a fixed base is fixed with a slider that is slidably connected to the slide rail.

[0014] In some embodiments, a hook is provided at the lower end of the driven rotating shaft along the axial direction, and the painted part is suspended on the hook.

[0015] In some embodiments, the uniform spraying equipment further includes: a detection component that moves synchronously with the paint sprayer; the detection component includes a visual detection element and / or a distance detection element.

[0016] Vision inspection elements are suitable for acquiring the outer contour of painted parts;

[0017] Distance detection elements are suitable for detecting the distance between the paint can and the painted part.

[0018] Secondly, this application also provides a painting method applied to the uniform painting equipment described above, the painting method comprising:

[0019] Obtain the outer contour of the painted part;

[0020] The painting area is divided based on the outer contour of the painted part;

[0021] The current distance between the paint can and the part to be painted is continuously acquired. When the current distance is less than or equal to a preset threshold, the motor speed is determined based on the average distance between the outer contour of the part to be painted in the current painting area and the paint can, as well as the correspondence between the average distance in the current painting area and the paint thickness.

[0022] When the current distance is greater than a preset threshold, the motor is controlled to reverse direction.

[0023] In some embodiments, the outer contour of the part to be painted is obtained; the painting area is divided based on the outer contour of the part to be painted, including:

[0024] Control the rotation of the painted part, and simultaneously raise and lower the detection component to traverse the outer contour of the painted part.

[0025] When the painted part rotates by an angle A, the average distance between the outer contour of the painted part and the paint can within that angle range is obtained;

[0026] Obtain the difference in average distance between two adjacent angle ranges. If the difference is greater than the preset difference, record the outer contours of the painted parts within the two adjacent angle ranges as different painted areas. If the difference is less than the preset difference, record the outer contours of the painted parts within the two adjacent angle ranges as the same painted area, and accumulate the painted areas.

[0027] In some embodiments, when the current distance is less than or equal to a preset threshold, the motor speed is determined based on the average distance from the outer contour of the painted part in the current painting area to the paint can, and the correspondence between the average distance in the current painting area and the paint thickness, including:

[0028] Obtain the total number of paint areas for the painted parts, and the average distance from the outer contour of the painted parts to the paint can within each paint area;

[0029] Sort the multiple average distances and determine the mean of the multiple average distances as the benchmark distance;

[0030] Given a reference distance, the corresponding paint thickness;

[0031] Based on the ratio between the current average distance and the reference distance, determine the paint thickness corresponding to the average distance within the current paint area.

[0032] Through the above technical solution, the uniform painting equipment provided in this application has the following beneficial effects:

[0033] 1. The uniform painting equipment provided in this application suspends the part to be painted and drives it to rotate around the axis via a driven rotating shaft. Simultaneously, the paint sprayer moves up and down axially to spray paint, meeting the painting needs of surfaces at different heights. This allows all surfaces of the part to be painted within approximately the same time frame, avoiding the need to wait for one surface to dry before painting another, preventing color differences after overall painting dries, improving the uniformity of the painted surface, and enhancing painting quality. It also increases painting efficiency.

[0034] 2. The painting method provided in this application continuously acquires the current distance between the paint can and the part to be painted. When the current distance is less than or equal to a preset threshold, the motor speed is determined based on the average distance from the outer contour of the part to the paint can within the current painting area, and the correspondence between the average distance within the current painting area and the paint thickness. When the current distance is greater than the preset threshold, the motor is controlled to reverse its rotation. Thus, while the part is rotating, the paint can be applied axially via the paint can, meeting the painting needs of surfaces at different heights. Furthermore, speed adjustment can meet the paint film thickness requirements of different painting areas, achieving automated painting, more precise control, improved surface uniformity, and enhanced painting quality and efficiency. It allows each surface of the part to be painted within approximately the same time frame, avoiding the need to paint one surface before another, and preventing color differences after overall painting. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is an overall schematic diagram of the uniform spraying equipment of this application;

[0037] Figure 2 This is a schematic diagram of the driver component of this application;

[0038] Figure 3 for Figure 2 A magnified view of a portion of the image;

[0039] Figure 4 This is a flowchart illustrating the painting method of this application;

[0040] Figure 5 This is a structural block diagram of the paint spraying control device of this application;

[0041] Figure 6 This is a schematic diagram of the hardware structure of the computer device of this application.

[0042] Explanation of reference numerals in the attached figures:

[0043] 1. Frame; 2. Painted parts; 3. Drive assembly; 4. Motor; 5. Detection assembly; 6. Paint bottle;

[0044] 301. Driven rotating shaft; 302. Hook; 303. Driven rotating shaft; 304. First driving wheel; 305. First driven wheel; 306. First belt; 307. Second driving wheel; 308. Second belt; 309. Second driven wheel; 310. Lead screw; 311. Fixed base; 312. Slide rail; 313. Slider; 314. Lead screw seat; 51. Vision detection element; 52. Distance detection element. Detailed Implementation

[0045] The embodiments of this application will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this application by way of example, but should not be used to limit the scope of this application. This application can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0046] These embodiments are provided to make the application thorough and complete, and to fully express the scope of the application to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, material composition, numerical expressions, and values ​​illustrated in these embodiments should be interpreted as merely exemplary and not as limiting.

[0047] It should be noted that, in the description of this application, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationship, are only for the convenience of describing this application 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 application. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0048] Furthermore, the terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. "Vertical" is not strictly vertical, but within the permissible margin of error. "Parallel" is not strictly parallel, but within the permissible margin of error. Terms such as "including" or "contains" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well.

[0049] It should also be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application depending on the specific circumstances. When a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device.

[0050] All terms used in this application have the same meaning as understood by one of ordinary skill in the art to which this application pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0051] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0052] The following is combined with Figures 1 to 3 This describes an embodiment of the present application.

[0053] According to an embodiment of this application, in one aspect, a uniform painting device is provided, comprising:

[0054] Motor 4;

[0055] The paint sprayer 6 is used to spray paint onto the paint sprayer 2 when in operation.

[0056] The drive assembly 3 has an active rotating shaft 303 driven by a motor 4, and a driven rotating shaft 301 and a lead screw 310 driven by the active rotating shaft 303 to rotate.

[0057] The paint spraying part 2 is fixed to one end of the driven rotating shaft 301 along the axial direction; the paint spraying part 2 rotates with the driven rotating shaft 301;

[0058] The paint can 6 is connected to the lead screw 310 via the lead screw seat 314. The rotation of the lead screw 310 causes the paint can 6 to move up and down axially.

[0059] The uniform spraying equipment has a frame 1, which serves as a support structure to support the drive component 3 and also allows for easy suspension of the painted parts 2, preventing them from touching the ground.

[0060] The paint sprayer 6 has a nozzle, which, when connected to a pressure device, can drive the paint sprayer 6 to spray paint onto the paint sprayer 2.

[0061] The output shaft of motor 4 is directly or indirectly connected to the active rotating shaft 303. The active rotating shaft 303 driven by motor 4 can further drive the driven rotating shaft 301 and the lead screw 310 to rotate.

[0062] By synchronously driving the driven rotating shaft 301 and the lead screw 310 to rotate by the active rotating shaft 303, the paint sprayer 6 can be raised and lowered axially while the paint spraying part 2 rotates around the shaft, so as to facilitate the painting of the outer surface of the paint spraying part 2.

[0063] The uniform painting equipment provided in this application suspends the painting component 2 and drives it to rotate around the axis via a driven rotating shaft 301. Simultaneously, the painting is performed by the paint sprayer 6 moving axially up and down. This meets the painting needs of surfaces at different heights of the painting component 2, allowing each surface to be painted in almost the same amount of time. This avoids the need to wait for one surface to dry before painting another, preventing color differences after the entire paint has dried, improving the uniformity of the painted surface, and enhancing the painting quality. It also increases painting efficiency.

[0064] By rotating the paint spraying component 2, the paint surface can be automatically rotated without manual flipping during painting, and the rotation speed is adjustable, resulting in more uniform paint spraying. At the same time, the paint can 6 is raised and lowered axially to ensure full coverage of the paint spraying surface, allowing the paint spraying operation to be completed in one hanging. Furthermore, the raising and lowering speed can be adjusted to make the paint layer on the paint spraying surface more uniform, thereby ensuring the quality of the paint spraying.

[0065] In some embodiments, combined with Figure 2 As shown, the active rotating shaft 303 is fixedly connected to the first active wheel 304, and the driven rotating shaft 301 is fixedly connected to the first driven wheel 305. The first active wheel 304 and the first driven wheel 305 are connected via the first belt 306 so that the active rotating shaft 303 drives the driven rotating shaft 301 to rotate.

[0066] In some embodiments, combined with Figure 2 As shown, the active rotating shaft 303 is fixedly connected to the second active wheel 307, and the lead screw 310 is fixedly connected to the second driven wheel 309. The second active wheel 307 and the second driven wheel 309 are connected via the second belt 308 so that the active rotating shaft 303 drives the lead screw 310 to rotate.

[0067] By reasonably selecting the gear ratio of the first driving wheel 304 to the first driven wheel 305, and the gear ratio of the second driving wheel 307 to the second driven wheel 309, it can be ensured that when the paint spraying part 2 rotates once, the lifting height of the paint sprayer 6 can meet the requirement that all areas are sprayed, avoiding missed areas.

[0068] In some embodiments, combined with Figure 3 As shown, the lead screw 310 has an external thread on its circumferential outer surface, and the lead screw seat 314 has an internal thread corresponding to the external thread. The lead screw 310 rotates to drive the lead screw seat 314 to rise and fall. The lead screw seat 314 is fixedly connected to a fixed seat 311, and the paint sprayer 6 is installed on the fixed seat 311.

[0069] In some embodiments, combined with Figure 3 As shown, the uniform spraying equipment also includes a slide rail 312, which is arranged parallel to the lead screw 310; a fixed base 311 is fixed with a slider 313 that is slidably connected to the slide rail 312.

[0070] In some embodiments, combined with Figure 2 As shown, a hook 302 is provided at the lower end of the driven rotating shaft 301 along the axial direction, and the painted part 2 is suspended on the hook 302.

[0071] In some embodiments, combined with Figure 2 As shown, the uniform spraying equipment also includes: a detection component 5, which moves synchronously with the paint can 6; the detection component 5 includes a vision detection element 51 and / or a distance detection element 52;

[0072] The vision inspection element 51 is adapted to acquire the outer contour of the painted part 2;

[0073] The distance detection element 52 is suitable for detecting the distance between the paint can 6 and the paint spraying part 2.

[0074] The outer contour of the painted part 2 is obtained by the visual inspection element 51, which makes it easy to model the painted part 2 so as to divide the painted part 2 into regions and ensure the uniformity of the paint spraying in each region.

[0075] Because the nozzle of the paint sprayer 6 is conical and the spray range is fixed, the paint thickness per unit area is thicker when the distance between the spraying part 2 and the nozzle of the paint sprayer 6 is relatively close, and conversely, the paint thickness per unit area is thinner when the distance between the spraying part 2 and the nozzle of the paint sprayer 6 is relatively far. By detecting the distance between the paint sprayer 6 and the spraying part 2 through the distance detection element 52, the rotation speed of the motor 4 can be adjusted reasonably, thereby increasing or decreasing the spraying time of the paint sprayer 6, thus ensuring that the paint sprayer 6 can achieve uniform paint thickness in all spraying ranges.

[0076] Combination Figure 1 As shown, in the embodiments of this application, multiple sets of paint sprayers 6 and corresponding drive components 3 can be set on the frame 1, thereby making reasonable use of space, improving work efficiency, and being applicable to processes that require multi-sided painting.

[0077] According to an embodiment of this application, another aspect provides a painting method applied to the uniform painting equipment described above, combined with... Figure 4 As shown, the painting method includes the following steps:

[0078] Step S101: Obtain the outer contour of the painted part 2.

[0079] The outer contour of the painted part 2 is constructed by scanning with a vision detection element 51, which can be a camera. As the painted part 2 rotates around the axis, the vision detection element 51 follows the rise and fall of the fixed base 311, and can scan the entire outer contour of the painted part 2, thus facilitating the construction of the outer contour of the painted part 2.

[0080] Step S102: Divide the painting area based on the outer contour of the painted part 2.

[0081] The outer contour of the paint spraying part 2 can be a cylinder, cone, cube, triangle, or other irregular shape. Among these, when the outer contour of the paint spraying part 2 is a cylinder, the painting method is the simplest, which is to control the paint spraying part 2 to maintain a constant speed of rotation and control the paint spray bottle 6 to maintain a constant speed of lifting and lowering. To adapt to complex painting objects, this application uses a cube as an example for illustration, wherein the edges of the cube can be rounded.

[0082] In step S102, the painting area is divided based on the outer contour of the painted part 2. The four planes of the cube can be divided into independent painting areas, and the rounded corner areas of the cube can also be divided into independent painting areas. As a variation, when the volume of the cube is large, each plane can be further divided into multiple small independent painting areas, and the rounded corner areas can be divided into multiple independent painting areas along the height direction.

[0083] Step S103: Continuously obtain the current distance between the paint can 6 and the paint part 2. When the current distance is less than or equal to a preset threshold, determine the rotation speed of the motor 4 based on the average distance between the outer contour of the paint part 2 in the current paint area and the paint can 6, as well as the correspondence between the average distance in the current paint area and the paint thickness.

[0084] Step S104: When the current distance is greater than the preset threshold, control motor 4 to reverse rotation.

[0085] When the current distance is less than or equal to the preset threshold, it indicates that there is still a paint spraying part 2 in the area directly in front of the nozzle of the paint can 6, and the painting operation can proceed smoothly. When the current distance is greater than the preset threshold, it indicates that there is no paint spraying part 2 in the area directly in front of the nozzle of the paint can 6. At this time, the motor 4 can be controlled to reverse the rotation so that there is a paint spraying part 2 again in the area directly in front of the nozzle of the paint can 6, thus avoiding invalid spraying by the paint can 6.

[0086] By dividing the painting area and continuously obtaining the distance between the outer contour of the painted part 2 and the paint bottle 6 in the current painting area through the distance detection element 52, and averaging the multiple distances obtained, the average distance between the outer contour of the painted part 2 and the paint bottle 6 in the current painting area is obtained.

[0087] The relationship between the average distance and paint thickness within the current paint spraying area can be pre-entered into the control module for lookup. Based on this relationship, the amount of paint sprayed per unit time by the paint can 6 is determined, which in turn determines the rotational speed of the motor 4.

[0088] The painting method provided in this application continuously acquires the current distance between the paint can 6 and the part 2 to be painted. When the current distance is less than or equal to a preset threshold, the rotational speed of the motor 4 is determined based on the average distance from the outer contour of the part 2 to the paint can 6 within the current painting area, and the correspondence between the average distance within the current painting area and the paint thickness. When the current distance is greater than the preset threshold, the motor 4 is controlled to reverse its rotation. Thus, while the part 2 is rotating, painting is performed axially via the paint can 6, meeting the painting needs of surfaces at different heights of the part 2. Furthermore, speed adjustment can meet the paint film thickness requirements of different painting areas, achieving automated painting, more precise control, improved uniformity of the painted surface, enhanced painting quality, and guaranteed painting efficiency. This allows each surface of the part 2 to be painted in almost the same amount of time, avoiding the need to paint one surface before another, and preventing color differences after overall painting has dried.

[0089] In some embodiments, step S101 above involves obtaining the outer contour of the paint-spraying component 2; step S102 involves dividing the paint-spraying area based on the outer contour of the paint-spraying component 2, specifically including:

[0090] Step A1: Control the rotation of the painted part 2, and at the same time raise and lower the detection component 5 to traverse the outer contour of the painted part 2.

[0091] Before the spraying operation of the paint can 6 begins, the spraying part 2 is rotated while the detection component 5 is raised and lowered. The outer contour of the spraying part 2 is traversed by the vision detection element 51 to obtain the outer contour information, which facilitates the contour modeling of the spraying part 2.

[0092] Step A2: When the paint spraying part 2 rotates by an angle A, obtain the average distance between the outer contour of the paint spraying part 2 and the paint spray bottle 6 within that angle range.

[0093] The angle value of A can be 1°, 0.5°, or smaller to increase the scanning frequency and facilitate the division of the outer contour of the painted part 2 into multiple painting areas. The rotation speed of each painting area can be adaptively changed.

[0094] By obtaining the average distance between the outer contour of the painted part 2 and the paint bottle 6 within the range of angle A, the difference between the average distances of two adjacent angle ranges can be obtained in step A3.

[0095] Step A3: Obtain the difference in average distance between two adjacent angle ranges. If the difference is greater than the preset difference, record the outer contours of the painted parts 2 within the two adjacent angle ranges as different painted areas. If the difference is less than the preset difference, record the outer contours of the painted parts 2 within the two adjacent angle ranges as the same painted area, and accumulate the painted areas.

[0096] Taking a cube as an example, every time the paint spraying part 2 rotates 2°, the average distance between the outer contour of the paint spraying part 2 and the paint spray bottle 6 within that angle range is obtained, for example, distances D1, D2, D3, D4... are obtained. A preset difference value of 1mm is set. Through calculation, for example, if the difference between D2 and D1 is less than 1mm, the outer contour of the paint spraying part 2 within the angle range corresponding to D1 and D2 is divided into the same painting area, and the painting areas are accumulated. Through calculation, for example, if the difference between D3 and D2 is greater than 1mm, the outer contour of the paint spraying part 2 within the angle range corresponding to D3 and D2 is divided into different painting areas. Through calculation, for example, if the difference between D4 and D3 is less than 1mm, the outer contour of the paint spraying part 2 within the angle range corresponding to D4 and D3 is divided into the same painting area, and the painting areas are accumulated. During the actual painting process, the rotation speed of motor 4 is Q1 for the outer contour of the painted part 2 within the angle range corresponding to D1 and D2; the rotation speed of motor 4 is Q2 for the outer contour of the painted part 2 within the angle range corresponding to D3 and D4; and Q1 is greater than Q2.

[0097] In some embodiments, step S103, when the current distance is less than or equal to a preset threshold, determines the rotational speed of the motor 4 based on the average distance between the outer contour of the painted part 2 in the current painting area and the paint can 6, and the correspondence between the average distance in the current painting area and the paint thickness, including:

[0098] Step B1: Obtain the total number of paint areas of the paint spraying part 2, and the average distance between the outer contour of the paint spraying part 2 and the paint spray bottle 6 in each paint spraying area.

[0099] Based on the division of the painting area of ​​the sprayed part 2 in step A3 above, the total number of painting areas of the sprayed part 2 is calculated. At the same time, the average distance between the outer contour of the sprayed part 2 and the paint bottle 6 in each painting area is recorded.

[0100] Step B2: Sort the multiple average distances and determine the mean of the multiple average distances as the benchmark distance.

[0101] The average distance between the outer contour of the painted part 2 and the paint can 6 in each paint area in step B1 is sorted, and the mean of multiple average distances is further calculated and used as the reference distance.

[0102] Step B3: Given the paint thickness corresponding to the reference distance.

[0103] Paint thickness corresponding to a given baseline distance, either through empirical formulas or by human intervention.

[0104] Step B4: Based on the ratio between the current average distance and the reference distance, determine the paint thickness corresponding to the average distance within the current paint area.

[0105] This allows the paint thickness corresponding to the average distance within the current painting area to be determined based on the ratio between the average distance and the reference distance, thereby adjusting the speed of motor 4. This meets the paint film thickness requirements of different painting areas and achieves automated painting.

[0106] Additionally, the uniform painting equipment also includes a paint film thickness detection device, which is mounted on a fixed base 311 and moves up and down with the fixed base 311 to obtain the paint film thickness of the corresponding area of ​​the painted part 2 at any time. At the same time, the paint film thickness detection device can also communicate with the control module to detect whether the paint film thickness of a certain area is higher or lower than a threshold, thereby controlling the paint sprayer 6 to stop spraying or re-spray.

[0107] This embodiment also provides a paint spraying control device for implementing the above embodiments and preferred embodiments; details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that performs a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0108] This embodiment provides a paint spraying control device, such as... Figure 5 As shown, it includes:

[0109] The acquisition module 501 is used to acquire the outer contour of the painted part 2.

[0110] The judgment module 502 is used to divide the painting area based on the outer contour of the painting part 2.

[0111] The execution module 503 is used to continuously obtain the current distance between the paint can 6 and the paint part 2. When the current distance is less than or equal to a preset threshold, the rotation speed of the motor 4 is determined based on the average distance between the outer contour of the paint part 2 and the paint can 6 in the current paint area, and the correspondence between the average distance in the current paint area and the paint thickness. When the current distance is greater than the preset threshold, the motor 4 is controlled to reverse rotation.

[0112] Further functional descriptions of the above modules and units are the same as those in the corresponding embodiments described above, and will not be repeated here.

[0113] In this embodiment, the paint spraying control device is presented in the form of a functional unit. Here, a unit refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and memory that execute one or more software or fixed programs, and / or other devices that can provide the above functions.

[0114] This application also provides a computer device having the above-described features. Figure 5 The paint spraying control device shown.

[0115] Please see Figure 6 , Figure 6 This is a schematic diagram of the structure of a computer device provided in an optional embodiment of this application, such as... Figure 6 As shown, the computer device includes one or more processors 10, memory 20, and interfaces for connecting the components, including high-speed interfaces and low-speed interfaces. The components communicate with each other via different buses and can be mounted on a common motherboard or otherwise installed as needed. The processors can process instructions executed within the computer device, including instructions stored in or on memory to display graphical information of a GUI on external input / output devices (such as display devices coupled to the interfaces). In some alternative implementations, multiple processors and / or multiple buses can be used with multiple memories and multiple memory modules, if desired. Similarly, multiple computer devices can be connected, each providing some of the necessary operations (e.g., as a server array, a group of blade servers, or a multiprocessor system). Figure 6 Take a processor 10 as an example.

[0116] Processor 10 may be a central processing unit, a network processor, or a combination thereof. Processor 10 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof. The programmable logic device may be a complex programmable logic device (CAMP), a field-programmable gate array (FPGA), a general-purpose array logic (GDA), or any combination thereof.

[0117] The memory 20 stores instructions executable by at least one processor 10 to cause at least one processor 10 to perform the method shown in the above embodiments.

[0118] The memory 20 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the computer device. Furthermore, the memory 20 may include high-speed random access memory and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some alternative embodiments, the memory 20 may optionally include memory remotely located relative to the processor 10, and these remote memories may be connected to the computer device via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0119] The memory 20 may include volatile memory, such as random access memory; the memory may also include non-volatile memory, such as flash memory, hard disk or solid-state drive; the memory 20 may also include a combination of the above types of memory.

[0120] The computer device also includes a communication interface 30 for communicating with other devices or communication networks.

[0121] This application also provides a computer-readable storage medium. The methods described in this application can be implemented in hardware or firmware, or implemented as recordable on a storage medium, or implemented as computer code downloaded over a network and originally stored on a remote storage medium or a non-transitory machine-readable storage medium and subsequently stored on a local storage medium. Thus, the methods described herein can be processed by software stored on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. The storage medium can be a magnetic disk, optical disk, read-only memory, random access memory, flash memory, hard disk, or solid-state drive, etc.; further, the storage medium can also include combinations of the above types of memory. It is understood that computers, processors, microprocessor controllers, or programmable hardware include storage components capable of storing or receiving software or computer code. When the software or computer code is accessed and executed by the computer, processor, or hardware, the methods shown in the above embodiments are implemented.

[0122] The embodiments of this application have now been described in detail. To avoid obscuring the concept of this application, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0123] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any manner.

Claims

1. A spray painting method, characterized in that, Used in uniform spraying equipment, The uniform spraying equipment includes: Motor (4); The paint sprayer (6) is used to spray paint onto the paint sprayer (2) when in operation; The drive assembly (3) has an active rotating shaft (303) driven by the motor (4), and a driven rotating shaft (301) and a lead screw (310) driven by the active rotating shaft (303). The paint spraying component (2) is fixed to one end of the driven rotating shaft (301) along the axial direction; the paint spraying component (2) rotates with the driven rotating shaft (301); The paint can (6) is connected to the lead screw (310) via the lead screw seat (314), and the rotation of the lead screw (310) drives the paint can (6) to move up and down along the axial direction; The uniform spraying equipment further includes: a detection component (5) that moves synchronously with the paint sprayer (6); the detection component (5) includes a visual detection element (51) and / or a distance detection element (52). The visual inspection element (51) is adapted to acquire the outer contour of the painted part (2); The distance detection element (52) is adapted to detect the distance between the paint can (6) and the paint spraying part (2); The painting method includes: Obtain the outer contour of the painted part (2); The painting area is divided based on the outer contour of the painted part (2); The current distance between the paint can (6) and the paint spraying part (2) is continuously acquired. When the current distance is less than or equal to a preset threshold, the rotation speed of the motor (4) is determined based on the average distance between the outer contour of the paint spraying part (2) and the paint can (6) in the current paint spraying area, and the correspondence between the average distance in the current paint spraying area and the paint thickness. When the current distance is greater than the preset threshold, control the motor (4) to reverse the rotation; The process of obtaining the outer contour of the painted part (2) and dividing the painting area based on the outer contour of the painted part (2) includes: Control the rotation of the paint spraying part (2) and simultaneously raise and lower the detection component (5) to traverse the outer contour of the paint spraying part (2); When the paint spraying part (2) rotates by an angle A, the average distance between the outer contour of the paint spraying part (2) and the paint spray bottle (6) within that angle range is obtained; Obtain the difference of the average distance between two adjacent angle ranges. If the difference is greater than the preset difference, record the outer contour of the painted part (2) in the two adjacent angle ranges as different painted areas. If the difference is less than the preset difference, record the outer contour of the painted part (2) in the two adjacent angle ranges as the same painted area, and accumulate the painted areas. When the current distance is less than or equal to a preset threshold, the rotational speed of the motor (4) is determined based on the average distance between the outer contour of the painted part (2) in the current painting area and the paint can (6), and the correspondence between the average distance in the current painting area and the paint thickness. This includes: Obtain the total number of the sprayed areas of the sprayed part (2), and the average distance from the outer contour of the sprayed part (2) to the paint bottle (6) in each sprayed area; Sort the multiple average distances and determine the mean of the multiple average distances as the benchmark distance; Given a reference distance, the corresponding paint thickness; Based on the ratio between the current average distance and the reference distance, determine the paint thickness corresponding to the average distance within the current paint area.

2. The painting method according to claim 1, characterized in that, The active rotating shaft (303) is fixedly connected to a first active wheel (304), and the driven rotating shaft (301) is fixedly connected to a first driven wheel (305). The first active wheel (304) and the first driven wheel (305) are connected via a first belt (306) so that the active rotating shaft (303) drives the driven rotating shaft (301) to rotate.

3. The painting method according to claim 1, characterized in that, The active rotating shaft (303) is fixedly connected to a second active wheel (307), and the lead screw (310) is fixedly connected to a second driven wheel (309). The second active wheel (307) and the second driven wheel (309) are connected via a second belt (308) so that the active rotating shaft (303) drives the lead screw (310) to rotate.

4. The painting method according to claim 3, characterized in that, The lead screw (310) has an external thread on its circumferential outer surface, and the lead screw seat (314) has an internal thread corresponding to the external thread. The lead screw (310) rotates to drive the lead screw seat (314) to rise and fall. The lead screw seat (314) is fixedly connected to a fixed seat (311), and the paint sprayer (6) is installed on the fixed seat (311).

5. The painting method according to claim 4, characterized in that, The uniform spraying equipment also includes a slide rail (312), which is arranged parallel to the lead screw (310); the fixed base (311) is fixed with a slider (313) that is slidably connected to the slide rail (312).

6. The painting method according to claim 1, characterized in that, The driven rotating shaft (301) is provided with a hook (302) at its lower end along the axial direction, and the painted part (2) is suspended on the hook (302).

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