Valve body paint spraying pretreatment device and pretreatment method thereof
The valve body painting pretreatment device using laser cleaning and etching solves the problems of dimensional changes, noise pollution, and high cost associated with traditional sandblasting processes, achieving automated, safe, and efficient valve body surface treatment.
Patent Information
- Application Number
- CN202511875625.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-12
- Publication Date
- 2026-02-10
AI Technical Summary
Traditional sandblasting processes have problems such as dimensional changes, surface damage, noise pollution, difficulty in automation, and high costs in valve body pretreatment, and also pose serious hazards to the environment and the health of operators.
A valve body painting pretreatment device is adopted, which includes first and second laser mechanisms, a rotary drive device and a carrier mechanism. The device achieves automated processing through laser cleaning and etching, and reduces noise and dust emissions by combining a conveying mechanism and a dust extraction device.
It achieves valve body cleaning and etching without blind spots and with automation, improving processing efficiency and safety, and reducing equipment footprint and operating costs.
Smart Images
Figure CN121491928A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of valve body processing equipment technology, and in particular to a valve body painting pretreatment device and its pretreatment method. Background Technology
[0002] A typical valve consists of a valve body, valve cover, valve core, valve stem, and operating device. The valve body, being the outer shell of the valve, is the primary pressure-bearing component, forming the fluid passage and serving as the mounting base for all other internal parts. In valve body manufacturing, surface pretreatment before painting typically employs sandblasting to remove oil and rust from the valve body surface, while simultaneously increasing its surface roughness to enhance coating adhesion. This process is widely used in the industry due to its low technical threshold and ease of operation.
[0003] However, sandblasting itself has several significant drawbacks. First, relying on high-speed jetting of abrasive to impact the valve body surface, unstable process parameters can easily lead to dimensional changes or surface damage in weak areas of the valve body. Over-blasting can also cause uneven surface roughness or micro-cracks. Second, this process generates significant noise and dust emissions, harming operator health and polluting the workshop and surrounding environment. Therefore, it often requires dedicated, soundproof, and dust-proof work areas equipped with large dust collection systems, increasing space and equipment investment. Furthermore, automating sandblasting is difficult and costly, and it remains primarily manual. With rising labor costs, its long-term economic viability is gradually declining. Simultaneously, continuous abrasive consumption, equipment wear, dust collection system maintenance, and increasingly stringent environmental compliance requirements further increase the overall cost of this process. Summary of the Invention
[0004] The purpose of this invention is to provide a valve body painting pretreatment device that can realize automated sandblasting pretreatment operation.
[0005] To solve the above-mentioned technical problems, the embodiments of the present invention provide a valve body painting pretreatment device, which includes a first laser mechanism, a second laser mechanism, a conveying mechanism, and a carrier mechanism; The vehicle mechanism includes a rotary drive device and a vehicle body. The rotary drive device is disposed on the conveying mechanism, and the conveying mechanism can drive the rotary drive device to move along the conveying path of the conveying mechanism. The rotary drive device is connected to the vehicle body and drives the vehicle body to rotate around its own central axis. Both the first laser mechanism and the second laser mechanism include a laser generator and a laser galvanometer electrically connected to the laser generator. The laser galvanometers of both the first laser mechanism and the second laser mechanism are capable of moving along the conveying path of the conveying mechanism.
[0006] In some embodiments, the conveying mechanisms are connected end to end to form a closed-loop conveying path; there are multiple carrier mechanisms, and the multiple carrier mechanisms are arranged sequentially at intervals along the conveying mechanism.
[0007] In some embodiments, the conveying mechanism includes a conveying drive device and a conveyor belt; the conveyor belt is a closed conveying structure formed by two parallel long straight belts and two semi-circular curved belts connected end to end, and the conveying drive device drives the conveyor belt to move; the carrier mechanism is disposed on the conveyor belt and is driven to move by the conveyor belt.
[0008] In some embodiments, the valve body painting pretreatment device further includes a dust extraction device; the dust extraction device includes a first dust extraction pipe, a second dust extraction pipe, a dust extraction filter, and a silencer pipe; the first dust extraction pipe and the second dust extraction pipe are both connected to the dust extraction filter, and the silencer pipe is provided on the dust extraction filter; the first dust extraction pipe and the first laser mechanism are disposed on opposite sides of the conveying mechanism, and the first dust extraction pipe is disposed on the inner side of the conveying mechanism, and the first laser mechanism is disposed on the outer side of the conveying mechanism; The second dust extraction pipe and the second laser mechanism are disposed on opposite sides of the conveying mechanism, with the second dust extraction pipe disposed on the inner side of the conveying mechanism and the second laser mechanism disposed on the outer side of the conveying mechanism.
[0009] In some embodiments, the laser galvanometer includes a six-degree-of-freedom motion device and a galvanometer body; the six-degree-of-freedom motion device is connected to the galvanometer body and drives the galvanometer body to achieve six degrees of freedom of motion, so that the galvanometer body moves along the conveying path of the conveying mechanism.
[0010] In some embodiments, the laser generator of the first laser mechanism is a continuous laser generator; The laser generator of the second laser mechanism is a pulsed laser generator.
[0011] In some embodiments, the valve body painting pretreatment device further includes a first detection element and a second detection element, the first and second detection elements being disposed on the front and rear sides of the conveying mechanism corresponding to the first laser mechanism, and a gap between the first and second detection elements; and / or, The valve body painting pretreatment device further includes a third detection element and a fourth detection element, which are disposed on the front and rear sides of the conveying mechanism corresponding to the second laser mechanism, and there is a gap between the third detection element and the fourth detection element.
[0012] In some embodiments, the vehicle body includes a carrying platform, a moving drive device, and multiple locking blocks; the rotating drive device is connected to the carrying platform and drives the carrying platform to rotate around its own central axis; the locking blocks are movably disposed at the top of the carrying platform and can extend or retract relative to the carrying platform; the moving drive device is connected to the locking blocks and drives the locking blocks to move relative to the carrying platform.
[0013] A second aspect of the present invention provides a valve body painting pretreatment method, using the valve body painting pretreatment device described above, comprising the following steps: Install the valve body to be processed onto the carrier body; The rotary drive device drives the vehicle body to rotate around its own central axis, and the conveying mechanism drives the rotary drive device to move the rotating vehicle body along the conveying path of the conveying mechanism. When the carrier body arrives at the first laser mechanism, the laser galvanometer of the first laser mechanism moves along the conveying path of the conveying mechanism following the carrier body and irradiates the valve body to be processed on the carrier body with laser to remove dirt. When the valve body to be treated for removing contaminants moves to the second laser mechanism, the laser galvanometer of the second laser mechanism follows the carrier body along the conveying path of the conveying mechanism and performs laser etching on the valve body to be treated on the carrier body.
[0014] In some embodiments, the step of the laser galvanometer of the first laser mechanism moving along the conveying path of the conveying mechanism with the carrier body and irradiating the valve body to be treated on the carrier body with laser to remove contaminants includes the following: When the carrier body is detected to have moved to the first position relative to the conveying mechanism, the laser galvanometer of the first laser mechanism is controlled to continue moving along the conveying path of the conveying mechanism to irradiate the valve body to be treated with laser to remove dirt. When the carrier body is detected to have moved to the second position relative to the conveying mechanism, the laser galvanometer of the first laser mechanism is controlled to return to the original position. And / or, when the valve body to be treated for removing contaminants moves to the second laser mechanism, the laser galvanometer of the second laser mechanism follows the carrier body along the conveying path of the conveying mechanism, and the step of laser etching the valve body to be treated on the carrier body includes the following: When the carrier body is detected to have moved to the third position relative to the conveying mechanism, the laser galvanometer of the second laser mechanism is controlled to continue moving along the conveying path of the conveying mechanism to perform laser etching on the valve body to be processed. When the carrier body is detected to have moved to the fourth position relative to the conveying mechanism, the laser galvanometer of the second laser mechanism is controlled to return to its original position.
[0015] Compared with related technologies, the valve body painting pretreatment device of this invention sets the carrier body for carrying the valve body to be treated on a rotary drive device, which is set on a conveying mechanism. This allows the valve body to move along with the conveying mechanism while rotating around its own central axis. Combined with the laser galvanometers of the first and second laser mechanisms moving synchronously with the carrier body along the conveying path of the conveying mechanism, the valve body is processed sequentially by the first and second laser mechanisms during its movement. The first laser mechanism is used to effectively clean the dirt on the surface of the valve body, and the second laser mechanism is used to laser etch the valve body. Since the valve body rotates synchronously during its movement, the laser can evenly cover its entire surface, realizing automated cleaning and etching sandblasting pretreatment without dead angles. This can replace the traditional manual sandblasting pretreatment operation, effectively improving processing efficiency and safety. Attached Figure Description
[0016] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.
[0017] Figure 1 This is a top view of the valve body painting pretreatment device according to an embodiment of the present invention; Figure 2 This is a partial structural schematic diagram of the valve body painting pretreatment device according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the vehicle mechanism according to an embodiment of the present invention; Figure 4 This is a flowchart of the valve body painting pretreatment method according to an embodiment of the present invention.
[0018] Figure label: 100. Valve body painting pretreatment device; 1. First laser mechanism; 11. Laser generator; 12. Laser galvanometer; 121. Six-degree-of-freedom motion device; 122. Galvanometer body; 2. Second laser mechanism; 3. Conveying mechanism; 31. Conveying drive device; 32. Conveyor belt; 33. First detection piece; 34. Second detection piece; 35. Third detection piece; 36. Fourth detection piece; 4. Carrier mechanism; 41. Rotation drive device; 42. Carrier body; 421. Bearing platform; 422. Locking block; 5. Dust extraction device; 51. First dust extraction pipe; 52. Dust extraction filter; 53. Silencing pipe; 54. Second dust extraction pipe; 6. Support frame; 200. Valve body. Detailed Implementation
[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been presented in the various embodiments of the present invention to enable the reader to better understand this application. However, the technical solutions claimed in this application can be implemented even without these technical details and various changes and modifications based on the following embodiments.
[0020] In embodiments of the present invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily for the purpose of better describing the present invention and its embodiments, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to be constructed and operated in a specific orientation.
[0021] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain situations to indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.
[0022] Furthermore, the terms "installation," "setting," "equipped with," "opening," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this invention according to the specific circumstances.
[0023] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.
[0024] This invention provides a valve body painting pretreatment device 100, such as... Figures 1 to 3 As shown, the valve body painting pretreatment device 100 includes a first laser mechanism 1, a second laser mechanism 2, a conveying mechanism 3, and a carrier mechanism 4.
[0025] The vehicle mechanism 4 includes a rotary drive device 41 and a vehicle body 42. The rotary drive device 41 is disposed on the conveying mechanism 3, and the conveying mechanism 3 can drive the rotary drive device 41 to move along the conveying path of the conveying mechanism 3. The rotary drive device 41 is connected to the vehicle body 42 and drives the vehicle body 42 to rotate around its own central axis. The first laser mechanism 1 and the second laser mechanism 2 both include a laser generator 11 and a laser galvanometer 12 electrically connected to the laser generator 11. The laser galvanometer 12 of the first laser mechanism 1 and the second laser mechanism 2 can both move along the conveying path of the conveying mechanism 3.
[0026] Understandably, the working principle of the valve body painting pretreatment device 100 is as follows: When the valve body 200 needs to be pre-treated by sandblasting, the valve body 200 to be treated is installed on the carrier body 42. The rotary drive device 41 is controlled to start working. The rotary drive device 41 drives the carrier body 42 to rotate around its own central axis, thereby driving the valve body 200 to rotate around its own central axis. The conveying mechanism 3 is controlled to start working. The conveying mechanism 3 drives the rotary drive device 41 to drive the valve body 200 on the carrier body 42 to move along the conveying path of the conveying mechanism 3. That is, at this time, the valve body 200 moves with the conveying mechanism 3 while rotating around its own central axis.
[0027] When the valve body 200 moves to the position of the first laser mechanism 1, the laser galvanometer 12 of the first laser mechanism 1 moves synchronously along the conveying path of the conveying mechanism 3 with the carrier body 42, so that the laser can always dynamically and continuously irradiate the valve body 200 during the movement of the valve body 200. Since the valve body 200 rotates synchronously during the movement, the four sides of the valve body 200 can be irradiated by the laser, thereby effectively cleaning the dirt such as oil or rust in various positions of the valve body 200. When the valve body 200, which removes dirt, moves along the conveying path of the conveying mechanism 3 to the second laser mechanism 2, the laser galvanometer 12 of the second laser mechanism 2 moves along the conveying path of the conveying mechanism 3 along with the carrier body 42, and performs laser etching on the valve body 200 on the carrier body 42 to form a matrix of micropores on the surface of the valve body 200. Since the valve body 200 rotates synchronously during the movement, the four sides of the valve body 200 can be laser etched, and the matrix of micropores can be formed at various positions of the valve body 200, thereby increasing the surface friction of the valve body 200 and improving the paint adhesion during subsequent painting.
[0028] In summary, the valve body painting pretreatment device 100, by placing the carrier body 42 for carrying the valve body 200 to be treated on the rotary drive device 41, and the rotary drive device 41 on the conveying mechanism 3, allows the valve body 200 to move along with the conveying mechanism 3 while rotating around its own central axis. Combined with the synchronous movement of the laser galvanometers 12 of the first laser mechanism 1 and the second laser mechanism 2 along the conveying path of the conveying mechanism 3 with the carrier body 42, the valve body 200 is processed sequentially by the first laser mechanism 1 and the second laser mechanism 2 during its movement. The first laser mechanism 1 is used to effectively clean the dirt on the surface of the valve body 200, and the second laser mechanism 2 is used to laser etch the valve body 200. Since the valve body 200 rotates synchronously during its movement, the laser can evenly cover its entire surface, realizing automated cleaning and etching sandblasting pretreatment operations without dead angles. This can replace the traditional manual sandblasting pretreatment operation, effectively improving processing efficiency and safety.
[0029] In some embodiments, such as Figure 1 and Figure 2As shown, the conveying mechanism 3 forms a closed-loop conveying path by connecting end to end; specifically, a closed-loop conveying path refers to a conveying path that forms an arbitrary shape without endpoints in two-dimensional or three-dimensional space, including but not limited to circular, elliptical, rectangular, polygonal, and combined shapes. Multiple carrier mechanisms 4 are provided, arranged sequentially and at intervals along the conveying mechanism 3. Each carrier body 42 on each carrier mechanism 4 can carry one valve body 200. Therefore, multiple valve bodies 200 can be loaded simultaneously on the conveying mechanism 3, and each valve body 200 can be cleaned and etched sequentially. Understandably, by connecting the two ends of the conveying mechanism 3 to form a closed loop, a long conveying line can be realized in a limited area. The carrier mechanism 4 can form a cyclical movement process as it moves along the conveying path of the conveying mechanism 3. When the conveying mechanism 3 conveys the carrier mechanism 4 to the position of the first laser mechanism 1, the laser galvanometer 12 of the first laser mechanism 1 moves synchronously with the carrier mechanism 4 and simultaneously irradiates the valve body 200 with laser during the movement. When it moves to a loop, the laser galvanometer 12 of the first laser mechanism 1 completes the cleaning operation of the valve body 200 and quickly returns to its original position. At this time, the valve body 200 on the carrier mechanism 4 rotates at least one revolution under the drive of the rotary drive device 41, that is, the surface of the valve body 200 has undergone at least one laser cleaning. Then, the carrier mechanism 4 can continue to move along the conveying path of the conveying mechanism 3 without stopping, waiting, or changing lines. When it reaches the position of the second laser mechanism 2, the laser galvanometer 12 of the second laser mechanism 2 moves synchronously with the carrier mechanism 4 for one loop. During the movement, the valve body 200 is laser etched synchronously. When it moves to one loop, the laser galvanometer 12 of the second laser mechanism 2 completes the etching operation on the valve body 200 and quickly returns to its original position. At this time, the valve body 200 on the carrier mechanism 4 rotates at least one revolution under the drive of the rotary drive device 41, that is, the surface of the valve body 200 has undergone at least one laser etching. Then the processed valve body 200 continues to be conveyed forward to the unloading position for unloading. At this time, the next valve body 200 is also conveyed to the first laser mechanism 1. Then the above steps are repeated to clean and etch different valve bodies 200 on the conveying mechanism 3 in sequence. Therefore, this embodiment utilizes the closed-loop structure of the conveying mechanism 3, combined with the cooperation of the first laser mechanism 1, the second laser mechanism 2, and the rotary drive device 41 on the carrier mechanism 4. Compared with the traditional linear conveying mechanism, which requires a long straight conveying line to complete the two processes of cleaning and etching, resulting in a large footprint, this embodiment can integrate a continuous conveying line that can circulate infinitely within a smaller working area, saving space, improving structural compactness, effectively reducing waiting and idle return time, and improving production efficiency.
[0030] In some embodiments, such as Figure 2As shown, the conveying mechanism 3 includes a conveying drive device 31 and a conveyor belt 32. The conveyor belt 32 is a closed conveying structure formed by two parallel long straight belts and two semi-circular curved belts connected end to end. The conveying drive device 31 drives the conveyor belt 32 to move. The carrier mechanism 4 is mounted on the conveyor belt 32 and is moved by the conveyor belt 32. It can be understood that the conveyor belt 32 of the conveying mechanism 3, with its closed conveying structure formed by two parallel long straight belts and two semi-circular curved belts connected end to end, forms a racetrack-shaped conveying path. Combined with the stable power provided by the conveying drive device 31 (such as a rotary motor), it can form a single closed-loop path, integrating a longer effective conveying length within a limited space, and enabling the carrier mechanism 4 to naturally and smoothly circulate, improving the smoothness and stability of the conveying process. In some embodiments, the valve body painting pretreatment device 100 further includes a bracket 6, and the first laser mechanism 1, the second laser mechanism 2, the conveying mechanism 3 and the carrier mechanism 4 are all disposed at a preset position on the bracket 6, wherein the top of the bracket 6 is adapted to the shape of the conveyor belt 32, so that the conveyor belt 32 can move relative to the top of the bracket 6.
[0031] In some embodiments, the laser galvanometer 12 includes a six-degree-of-freedom motion device 121 and a galvanometer body 122. The six-degree-of-freedom motion device 121 is connected to the galvanometer body 122 and drives the galvanometer body 122 to achieve six degrees of freedom of movement, so that the galvanometer body 122 moves along the conveying path of the conveying mechanism 3. Understandably, the six-degree-of-freedom motion device 121 can drive the galvanometer body 122 to move flexibly in three-dimensional space, specifically translating along the X, Y, and Z axes and rotating around these three axes, so that the galvanometer body 122 always follows the valve body 200 along the conveying path of the conveying mechanism 3, and ensures that the laser focus always acts precisely and perpendicularly on the predetermined trajectory of the valve body 200 surface, thereby obtaining stable and uniform processing quality even under dynamic conditions. Specifically, the six-degree-of-freedom motion device 121 can be a six-axis industrial robot, a six-axis linear module, etc., without particular limitation.
[0032] In some embodiments, the laser generator 11 of the first laser mechanism 1 is a continuous laser generator. Specifically, the continuous laser generator is an infrared nanosecond continuous laser. The infrared nanosecond continuous laser outputs laser light, which irradiates the valve body 200 through the laser galvanometer 12, thereby effectively cleaning dirt such as oil or rust from various locations on the valve body 200. The power and frequency can be adjusted according to actual needs, that is, the laser power can be adjusted according to the cleaning situation, in conjunction with adjusting the rotation speed of the rotary drive device 41 and the conveying speed of the conveyor mechanism 3. For example, if the cleaning is found to be incomplete, the laser power can be increased by 5% increments, and the conveying speed of the conveyor belt 32 can be decreased by 1.2 / 2Z increments (Z represents the number of rotations of the valve body 200). If the laser is found to be overburned, the laser power can be decreased by 5% increments, and the conveying speed of the conveyor belt 32 can be increased by 1.2 / 2Z increments (Z represents the number of rotations of the valve body 200).
[0033] In some embodiments, the laser generator 11 of the second laser mechanism 2 is a pulsed laser generator. Specifically, the pulsed laser generator is an infrared nanosecond pulsed laser. The laser output from the infrared nanosecond pulsed laser is used to irradiate the valve body 200 through the laser galvanometer 12, thereby etching various positions of the valve body 200 to form a matrix of micro-holes. The power and frequency can be adjusted according to actual needs, that is, the laser power can be adjusted according to the etching depth, in conjunction with adjusting the rotation speed of the rotary drive device 41 and the conveying speed of the conveying mechanism 3. For example, if the etching depth is insufficient, the laser power can be increased by 5% increments, and the conveying speed of the conveyor belt 32 can be decreased by 1.2 / 2Z increments (Z represents the number of rotations of the valve body 200). If it is found that the laser etching depth is too deep, the laser power can be decreased by 5% increments, and the conveying speed of the conveyor belt 32 can be increased by 1.2 / 2Z increments (Z represents the number of rotations of the valve body 200).
[0034] In some embodiments, such as Figure 1As shown, the valve body painting pretreatment device 100 further includes a first detection element 33 and a second detection element 34. The first detection element 33 and the second detection element 34 are disposed on the front and rear sides of the conveying mechanism 3 corresponding to the first laser mechanism 1, and there is a gap between the first detection element 33 and the second detection element 34. Specifically, the first detection element 33 and the second detection element 34 can be 1m to 2m apart, or other gaps, without particular limitation. The first detection element 33 and the second detection element 34 can both be RFID identification devices, photoelectric sensors, proximity sensors, limit switches, or vision systems, etc., without particular limitation. Understandably, when the carrier mechanism 4 and the valve body 200 mounted on it pass the first detection element 33, the rotary drive device 41 is triggered to start working, driving the valve body 200 to rotate around its own central axis. This triggers the conveying mechanism 3 to reduce the conveying speed and the laser generator 11 of the first laser mechanism 1 to output laser light, which irradiates the valve body 200 through the laser galvanometer 12. At the same time, the laser galvanometer 12 begins to move forward with the carrier mechanism 4 and the valve body 200 on it, maintaining a stable laser output from the laser galvanometer 12 irradiating the valve body 200 and removing oil from the valve body 200. When the carrier mechanism 4 and the valve body 200 on it are transported to the second detection element 34, the valve body 200 has just rotated a preset number of revolutions, such as two revolutions, driven by the rotary drive device 41. The surface of the valve body 200 has undergone two laser cleanings. When the carrier mechanism 4 and the valve body 200 on it pass the second detection element 34, the rotary drive device 41 is triggered to stop rotating, and the conveying mechanism 3 is triggered to increase the conveying speed. The laser generator 11 of the first laser mechanism 1 is triggered to stop outputting laser. At the same time, the laser galvanometer 12 will quickly reset to the initial position, waiting for the next set of valve bodies 200.
[0035] In some embodiments, such as Figure 1As shown, the valve body painting pretreatment device 100 further includes a third detection element 35 and a fourth detection element 36. The third detection element 35 and the fourth detection element 36 are disposed on the front and rear sides of the conveying mechanism 3 corresponding to the second laser mechanism 2, and there is a gap between the third detection element 35 and the fourth detection element 36. Specifically, the third detection element 35 and the fourth detection element 36 can be 1m to 2m apart, or other gaps, without particular limitation. Both the third detection element 35 and the fourth detection element 36 can be RFID identification devices, photoelectric sensors, proximity sensors, limit switches, or vision systems, etc., without particular limitation. Understandably, when the cleaned valve body 200 passes the third detection element 35 under the drive of the conveying mechanism 3, the rotary drive device 41 is triggered to start working, causing the valve body 200 to rotate around its own central axis. This triggers the conveying mechanism 3 to reduce its conveying speed and the laser generator 11 of the second laser mechanism 2 to output laser light, which irradiates the valve body 200 through the laser galvanometer 12. Simultaneously, the laser galvanometer 12 begins to move forward along with the carrier mechanism 4 and the valve body 200 on it, maintaining a stable laser output from the laser galvanometer 12 irradiating the valve body 200 at various positions. The etching process creates a lattice of micropores. When the carrier mechanism 4 and the valve body 200 on it are conveyed to the fourth detection element 36, the valve body 200 has rotated a preset number of revolutions, such as two revolutions, driven by the rotary drive device 41. The surface of the valve body 200 has undergone two laser etching processes. When the carrier mechanism 4 and the valve body 200 on it pass the fourth detection element 36, the rotary drive device 41 is triggered to stop rotating, the conveying mechanism 3 is triggered to increase its conveying speed, and the laser generator 11 of the second laser mechanism 2 is triggered to stop outputting laser light. At the same time, the laser galvanometer 12 will quickly reset to its initial position, waiting for the next set of valve bodies 200. The above control is specifically achieved through a conventional programmable logic controller (PLC) or industrial motion controller. By receiving signals from the first detection element 33, the second detection element 34, the third detection element 35, and the fourth detection element 36, the controller coordinates the actions of each actuator according to a preset logic program.
[0036] In some embodiments, such as Figure 1As shown, the valve body painting pretreatment device 100 also includes a dust extraction device 5. The dust extraction device 5 includes a first dust extraction pipe 51, a second dust extraction pipe 54, a dust extraction filter 52, and a silencer pipe 53. The air inlets of both the first dust extraction pipe 51 and the second dust extraction pipe 54 are conical, with their larger diameter ends facing the valve body 200. Both the first dust extraction pipe 51 and the second dust extraction pipe 54 are connected to the dust extraction filter 52, which is equipped with a silencer pipe 53. Understandably, the air inlet of the first dust extraction pipe 51 is a gradually expanding conical structure, which can efficiently capture dust and debris splashed in all directions after laser stripping. Subsequently, the dust is transported through the first dust extraction pipe 51 to the dust extraction filter 52, where the dust extraction filter 52 performs gas-solid separation. The purified gas is discharged through the silencer pipe 53, which can reduce the noise generated by high-speed airflow and fan operation. By setting the first dust extraction pipe 51 opposite to the first laser mechanism 1, the dust generated during the cleaning of the valve body 200 by the first laser mechanism 1 can be cleaned in a timely manner. The first laser mechanism 1 is set outside the conveying mechanism 3, and the first dust extraction pipe 51 is set inside the conveying mechanism 3. On the one hand, this provides the first laser mechanism 1 with a relatively open working space, which facilitates the control of the laser galvanometer 12 of the first laser mechanism 1 to follow the movement of the valve body 200. This allows the laser galvanometer 12 to move freely and smoothly with the valve body 200 without worrying about structural interference with the conveying mechanism 3 or the returning carrier mechanism 4. On the other hand, when the valve body 200 is cleaned by laser, the dust that is peeled off is initially sprayed away from the laser incident direction under the action of laser impact, and the dust is at its maximum at the initial irradiation position. Therefore, by arranging the first dust extraction pipe 51 inside the conveying mechanism 3, it can face the main dust jet flow directly, so that the dust can be quickly absorbed as soon as it is generated. Similarly, the second dust extraction pipe 54 and the second laser mechanism 2 are arranged on opposite sides of the conveying mechanism 3, with the second dust extraction pipe 54 located inside the conveying mechanism 3 and the second laser mechanism 2 located outside the conveying mechanism 3. On the one hand, this provides a relatively open working space for the second laser mechanism 2, making it easier to control the laser galvanometer 12 of the second laser mechanism 2 to move with the valve body 200. On the other hand, it can face the main dust jet flow head-on, so that the dust can be quickly adsorbed as soon as it is generated.
[0037] In some embodiments, such as Figure 1 and Figure 3As shown, the carrier body 42 includes a support platform 421, a moving drive device, and multiple locking blocks 422. The rotating drive device 41 is connected to the support platform 421 and drives the support platform 421 to rotate around its own central axis. The locking blocks 422 are movably disposed at the top of the support platform 421 and can extend or retract relative to the support platform 421. The moving drive device is connected to the locking blocks 422 and drives the locking blocks 422 to move relative to the support platform 421. It should be noted that a conventional valve body 200 has a pipe, and different specifications of valve bodies 200 have different pipe diameters. The pipe of the valve body 200 is sleeved on the support platform 421. By setting a movable locking block 422 at the top of the support platform 421, the moving drive device can drive the locking block 422 to move to support the inner wall of the pipe of the valve body 200, thereby firmly fixing the valve body 200 on the support platform 421. Understandably, the multiple locking blocks 422 apply radial support force uniformly from the inside, effectively eliminating installation gaps and automatically aligning the axis of the valve body 200 with the center of the support platform 421, effectively ensuring the consistency of subsequent processing or inspection standards. Simultaneously, the internal support force acts directly on the structurally strong pipe wall portion of the valve body 200, effectively preventing shell deformation or surface damage that may result from external clamping. Furthermore, the moving drive device can specifically be a cylinder, electric push rod, or servo motor, enabling precise control of the displacement of the locking blocks 422. The front end of the locking blocks 422 can have anti-slip textures or a soft pad, increasing friction and ensuring locking while protecting the smoothness of the inner wall of the valve body 200. Further, the locking blocks 422 have an inverted L-shaped structure, with the ends of the locking blocks 422 enlarged to further increase the contact area with the cylinder wall.
[0038] like Figure 4 As shown, this embodiment of the invention also provides a valve body painting pretreatment method, using the valve body painting pretreatment device 100 as described above, including the following steps: S1: Install the valve body 200 to be processed onto the carrier body 42; S2: The rotary drive device 41 drives the carrier body 42 to rotate around its own central axis, and the conveying mechanism 3 drives the rotary drive device 41 to drive the rotating carrier body 42 to move along the conveying path of the conveying mechanism 3. S3: When the carrier body 42 reaches the first laser mechanism 1, the laser galvanometer 12 of the first laser mechanism 1 follows the carrier body 42 along the conveying path of the conveying mechanism 3 and irradiates the valve body 200 to be processed on the carrier body 42 with laser to remove dirt. S4: When the valve body 200 to be treated to remove dirt moves to the second laser mechanism 2, the laser galvanometer 12 of the second laser mechanism 2 moves along the conveying path of the conveying mechanism 3 with the carrier body 42 and performs laser etching on the valve body 200 to be treated on the carrier body 42.
[0039] Understandably, by using the above-described valve body painting pretreatment method, the carrier body 42 for carrying the valve body 200 to be treated is mounted on the rotary drive device 41, and the rotary drive device 41 is mounted on the conveying mechanism 3. This allows the valve body 200 to move along with the conveying mechanism 3 while rotating around its own central axis. Combined with the synchronous movement of the laser galvanometers 12 of the first laser mechanism 1 and the second laser mechanism 2 along the conveying path of the conveying mechanism 3 with the carrier body 42, the valve body 200 is processed sequentially by the first laser mechanism 1 and the second laser mechanism 2 during its movement. The first laser mechanism 1 is used to effectively clean the dirt on the surface of the valve body 200, and the second laser mechanism 2 is used to perform laser etching on the valve body 200. Since the valve body 200 rotates synchronously during its movement, the laser can evenly cover its entire surface, achieving automated cleaning and etching sandblasting pretreatment without dead angles. This can replace the traditional manual sandblasting pretreatment, effectively improving processing efficiency and safety.
[0040] In some embodiments, the step of the laser galvanometer 12 of the first laser mechanism 1 moving along the conveying path of the conveying mechanism 3 with the carrier body 42 and irradiating the valve body 200 to be treated on the carrier body 42 with laser to remove dirt includes the following: When the carrier body 42 is detected to have moved to a first position relative to the conveying mechanism 3, the laser galvanometer 12 of the first laser mechanism 1 is controlled to continue moving along the conveying path of the conveying mechanism 3 to irradiate the valve body 200 to remove contaminants. When the carrier body 42 is detected to have moved to a second position relative to the conveying mechanism 3, the laser galvanometer 12 of the first laser mechanism 1 is controlled to return to its original position. It can be understood that the first position can be the input position of the conveying mechanism 3 corresponding to the position of the first laser mechanism 1, and the second position can be the output position of the conveying mechanism 3 corresponding to the position of the first laser mechanism 1. Specifically, the position of the carrier body 42 is detected by the first detection element 33 and the second detection element 34 described above.
[0041] When the valve body 200 to be treated for removing contaminants moves to the second laser mechanism 2, the laser galvanometer 12 of the second laser mechanism 2 follows the carrier body 42 along the conveying path of the conveying mechanism 3, and the step of laser etching the valve body 200 to be treated on the carrier body 42 includes the following: When the carrier body 42 is detected to have moved to the third position relative to the conveying mechanism 3, the laser galvanometer 12 of the second laser mechanism 2 is controlled to continue moving along the conveying path of the conveying mechanism 3 to perform laser etching on the valve body 200 to be processed. When the carrier body 42 is detected to have moved to the fourth position relative to the conveying mechanism 3, the laser galvanometer 12 of the second laser mechanism 2 is controlled to return to its original position. It can be understood that the third position can be the input position of the conveying mechanism 3 corresponding to the position of the second laser mechanism 2, and the fourth position can be the output position of the conveying mechanism 3 corresponding to the position of the second laser mechanism 2. Specifically, the position of the carrier body 42 is detected by the aforementioned third detection element 35 and fourth detection element 36.
[0042] For ease of understanding, the following is a specific embodiment of a valve body painting pretreatment method, including the following steps: The first set of valve bodies 200 is placed on the support platform 421. The moving drive device drives the card block 422 to open and fix the valve body 200. The support platform 421 and the valve body 200 fixed on it are conveyed to the working range of the first laser mechanism 1 by the conveyor belt 32 (conveyor belt 32 conveying speed 1.2m / min). When the first set of bearing platform 421 and the valve body 200 fixed on it pass the first detection piece 33, the rotary drive device 41 is triggered to start working. The rotary drive device 41 drives the valve body 200 to rotate at a constant speed (2 min / revolution), and triggers the conveyor drive device 31 to reduce the rotation speed so that the conveyor belt 32 transmission speed decreases (conveyor belt 32 transmission speed 0.3 m / min). It also triggers the laser generator 11 (infrared nanosecond continuous laser) of the first laser mechanism 1 to output laser, which irradiates the valve body 200 through the laser galvanometer 12 (continuous laser power: 55%, frequency: 500 Hz). At this time, the six-degree-of-freedom motion device 121 waiting at this position receives the position signal of the workpiece and drives the galvanometer body 122 to start moving forward with the valve body 200, and keeps the laser output by the galvanometer body 122 stably irradiating the valve body 200, removing oil and rust from the valve body 200. When the valve body 200 is transferred to the second detection element 34, the valve body 200 has rotated two revolutions under the drive of the rotary drive device 41, and the surface of the valve body 200 has undergone two laser cleanings. When the cleaned valve body 200 passes the second detection element 34, the rotary drive device 41 is triggered to stop rotating, and the conveyor drive device 31 is triggered to increase the rotation speed so that the conveyor belt 32 increases the transmission speed (speed 1.2m / min). The infrared nanosecond continuous laser is also triggered to stop outputting laser. At the same time, the six-degree-of-freedom motion device 121 and the galvanometer body 122, which move together with the valve body 200 to the second detection element 34, will quickly reset to the initial position and wait for the next set of valve bodies 200. The conveyor belt 32 continues to carry the first set of valve bodies 200 after cleaning forward through the third detection piece 35. At the same time, the conveyor belt 32 also carries the second set of bearing platform 421 and the valve bodies 200 fixed on it forward to the working range of the first laser mechanism 1 for cyclic cleaning. When the first set of valve bodies 200, after cleaning, passes the third detection element 35, the rotary drive device 41 is triggered to start working. The rotary drive device 41 drives the valve body 200 to rotate at a constant speed (2 min / revolution), and triggers the conveyor drive device 31 to reduce its speed, causing the conveyor belt 32 to decrease its transmission speed (0.3 m / min). This triggers the laser generator 11 (infrared nanosecond pulsed laser) of the second laser mechanism 2 to output laser light, which irradiates the valve body 200 through the laser galvanometer 12 (pulsed laser power: 50%, frequency: 2 kHz). At this time, the six-degree-of-freedom motion device 121, waiting at this position, receives the position signal of the workpiece and drives the galvanometer body 122 to move forward with the valve body 200, maintaining stable laser output from the galvanometer body 122 irradiating the valve body 200, etching a lattice of micropores (pore diameter: 90 μm, number 300 / cm) on the surface of the valve body 200. 2 Depth: 80um); When the valve body 200 is transferred to the fourth detection element 36, the valve body 200 has rotated twice under the drive of the rotary drive device 41, and the surface of the valve body 200 has undergone two laser dot matrix etching processes.
[0043] When the valve body 200 passes the fourth detection element 36, the rotary drive device 41 is triggered to stop rotating, and the conveyor drive device 31 is triggered to increase the rotation speed so that the conveyor belt 32 increases the transmission speed (speed 1.2m / min). The infrared nanosecond pulse laser is triggered to stop outputting laser. At the same time, the six-degree-of-freedom motion device 121 and the galvanometer body 122, which move together with the valve body 200, will quickly reset to the initial position and wait for the next set of valve bodies 200. This cycle repeats itself. When the first set of valve bodies 200 is conveyed to the unloading point by the conveyor belt 32, the subsequent valve bodies 200 are also conveyed to the working area of the first laser mechanism 1. The speed of the conveyor belt 32 will decrease, which is suitable for unloading the valve bodies 200.
[0044] The "subject name" provided by the embodiments of the present invention has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the idea of the present invention. There may be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.
Claims
1. A valve body painting pretreatment device, characterized in that, The valve body painting pretreatment device includes a first laser mechanism, a second laser mechanism, a conveying mechanism, and a carrier mechanism; The vehicle mechanism includes a rotary drive device and a vehicle body. The rotary drive device is disposed on the conveying mechanism, and the conveying mechanism can drive the rotary drive device to move along the conveying path of the conveying mechanism. The rotary drive device is connected to the vehicle body and drives the vehicle body to rotate around its own central axis. Both the first laser mechanism and the second laser mechanism include a laser generator and a laser galvanometer electrically connected to the laser generator. The laser galvanometers of both the first laser mechanism and the second laser mechanism are capable of moving along the conveying path of the conveying mechanism.
2. The valve body painting pretreatment device according to claim 1, characterized in that, The conveying mechanism forms a closed-loop conveying path by connecting the two ends; there are multiple carrier mechanisms, which are arranged sequentially and at intervals along the conveying mechanism.
3. The valve body painting pretreatment device according to claim 2, characterized in that, The conveying mechanism includes a conveying drive device and a conveyor belt; the conveyor belt is a closed conveying structure formed by two parallel long straight belts and two semi-circular curved belts connected end to end, and the conveying drive device drives the conveyor belt to move; the carrier mechanism is set on the conveyor belt and is driven to move by the conveyor belt.
4. The valve body painting pretreatment device according to claim 2, characterized in that, The valve body painting pretreatment device also includes a dust extraction device; the dust extraction device includes a first dust extraction pipe, a second dust extraction pipe, a dust extraction filter and a silencer; the first dust extraction pipe and the second dust extraction pipe are both connected to the dust extraction filter, and the silencer is provided on the dust extraction filter. The first dust extraction pipe and the first laser mechanism are disposed on opposite sides of the conveying mechanism, with the first dust extraction pipe disposed on the inner side of the conveying mechanism and the first laser mechanism disposed on the outer side of the conveying mechanism. The second dust extraction pipe and the second laser mechanism are disposed on opposite sides of the conveying mechanism, with the second dust extraction pipe disposed on the inner side of the conveying mechanism and the second laser mechanism disposed on the outer side of the conveying mechanism.
5. The valve body painting pretreatment device according to any one of claims 1-4, characterized in that, The laser galvanometer includes a six-degree-of-freedom motion device and a galvanometer body; the six-degree-of-freedom motion device is connected to the galvanometer body and drives the galvanometer body to achieve six degrees of freedom of motion, so that the galvanometer body moves along the conveying path of the conveying mechanism.
6. The valve body painting pretreatment device according to any one of claims 1-4, characterized in that, The laser generator of the first laser mechanism is a continuous laser generator; The laser generator of the second laser mechanism is a pulsed laser generator.
7. The valve body painting pretreatment device according to claim 5, characterized in that, The valve body painting pretreatment device further includes a first detection element and a second detection element, which are disposed on the front and rear sides of the conveying mechanism corresponding to the first laser mechanism, and there is a gap between the first detection element and the second detection element; and / or, The valve body painting pretreatment device further includes a third detection element and a fourth detection element, which are disposed on the front and rear sides of the conveying mechanism corresponding to the second laser mechanism, and there is a gap between the third detection element and the fourth detection element.
8. The valve body painting pretreatment device according to any one of claims 1-4, characterized in that, The vehicle body includes a carrying platform, a moving drive device, and multiple locking blocks; the rotating drive device is connected to the carrying platform and drives the carrying platform to rotate around its own central axis; the locking blocks are movably disposed at the top of the carrying platform and can extend or retract relative to the carrying platform; the moving drive device is connected to the locking blocks and drives the locking blocks to move relative to the carrying platform.
9. A method for pre-treatment of valve body for painting, characterized in that, Using the valve body painting pretreatment apparatus according to any one of claims 1-8, the following steps are included: Install the valve body to be processed onto the carrier body; The rotary drive device drives the vehicle body to rotate around its own central axis, and the conveying mechanism drives the rotary drive device to move the rotating vehicle body along the conveying path of the conveying mechanism. When the carrier body arrives at the first laser mechanism, the laser galvanometer of the first laser mechanism moves along the conveying path of the conveying mechanism following the carrier body and irradiates the valve body to be processed on the carrier body with laser to remove dirt. When the valve body to be treated for removing contaminants moves to the second laser mechanism, the laser galvanometer of the second laser mechanism follows the carrier body along the conveying path of the conveying mechanism and performs laser etching on the valve body to be treated on the carrier body.
10. The valve body painting pretreatment method according to claim 9, characterized in that, The steps of the first laser mechanism's laser galvanometer moving along the conveying path of the conveying mechanism with the carrier body and irradiating the valve body to be treated on the carrier body with laser to remove dirt include the following: When the carrier body is detected to have moved to the first position relative to the conveying mechanism, the laser galvanometer of the first laser mechanism is controlled to continue moving along the conveying path of the conveying mechanism to irradiate the valve body to be treated with laser to remove dirt. When the carrier body is detected to have moved to the second position relative to the conveying mechanism, the laser galvanometer of the first laser mechanism is controlled to return to the original position. And / or, when the valve body to be treated for removing contaminants moves to the second laser mechanism, the laser galvanometer of the second laser mechanism follows the carrier body along the conveying path of the conveying mechanism, and the step of laser etching the valve body to be treated on the carrier body includes the following: When the carrier body is detected to have moved to the third position relative to the conveying mechanism, the laser galvanometer of the second laser mechanism is controlled to continue moving along the conveying path of the conveying mechanism to perform laser etching on the valve body to be processed. When the carrier body is detected to have moved to the fourth position relative to the conveying mechanism, the laser galvanometer of the second laser mechanism is controlled to return to its original position.