Etching device for magnesium alloy surface treatment

Abstract

The invention relates to the technical field of magnesium alloy treatment equipment, and discloses an etching device for magnesium alloy surface treatment.The etching device comprises an etching machine body, a conveying assembly and a spraying assembly, and the conveying assembly and the spraying assembly are both arranged on the etching machine body. Precise detection of the thickness of the magnesium alloy plate and intelligent adjustment of etching parameters are achieved, the distance sensor captures the displacement amount of the rotating rod in real time and converts the displacement amount into a thickness value, the controller automatically matches the water pressure and the conveying speed according to a preset mapping relation, and the problems that a thin plate is deformed or over-etched due to water flow impact, and a thick plate is insufficient in etching are solved; and meanwhile, personalized process requirements are considered through a user instruction priority mechanism, so that the quality risk caused by manual misoperation is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of magnesium alloy processing equipment, and in particular to an etching device for magnesium alloy surface treatment. Background Art

[0002] Magnesium alloys are widely used in aerospace, automotive, and electronic equipment due to their low density, high specific strength, and excellent heat dissipation. Surface treatment etching plays a key role in improving magnesium alloys' corrosion resistance, surface finish, and subsequent coating adhesion.

[0003] During the etching process, the magnitude of the water flow impact is a key factor influencing the etching effect. However, existing etching equipment struggles to accurately adjust the water flow based on the thickness of the magnesium alloy sheet. When processing thinner magnesium alloy sheets, a larger water flow impact can easily cause deformation and even over-etching, severely impacting the sheet's mechanical properties and surface quality. For thicker magnesium alloy sheets, insufficient water flow impact can result in etching depths that fall short of expectations, reducing etching efficiency and quality, making it difficult to meet the differentiated etching requirements for sheets of varying thicknesses.

[0004] At the same time, there are also defects in the transmission speed control. The transmission speed of some etching devices relies solely on manual settings. When the user fails to adjust the transmission speed in time according to the thickness of the plate (for example, the faster transmission speed suitable for thick plates is mistakenly used for etching thin plates), over-etching or under-etching is very likely to occur. Summary of the Invention

[0005] In response to the deficiencies in the prior art, the present invention provides an etching device for magnesium alloy surface treatment. Through an integrated detection and control system, the device can realize real-time detection of the thickness of the magnesium alloy plate, and automatically adjust the spray pressure and conveying speed based on the detection results, while supporting users to manually set parameters.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: An etching device for magnesium alloy surface treatment includes an etching body, a transmission component and a spray component. The transmission component and the spray component are both arranged on the etching body. The etching body is provided with a detection component, the detection component includes a rotating rod that can move up and down, and the detection component is provided with a distance sensor for determining the thickness of the plate according to the movement distance of the rotating rod. The etching body is provided with a spray component, the spray component is provided with an electromagnetic control valve, and is connected to a liquid supply device through the electromagnetic control valve.

[0007] Preferably, the controller is electrically connected to the detection element, the electromagnetic control valve and the transmission assembly; The controller configuration is: Receive the displacement signal from the distance sensor and calculate the thickness of the plate according to the preset displacement-thickness conversion relationship; Querying the target water pressure value corresponding to the plate thickness value from the internally stored thickness-water pressure mapping table, and sending an instruction to the electromagnetic control valve to adjust the spray pressure to the target water pressure value; Querying an initial conveying speed value corresponding to the plate thickness value from an internally stored thickness-speed mapping table, and sending an instruction to the conveying component to adjust the conveying speed to the initial conveying speed value; If a user-defined transmission speed instruction inputted through the human-computer interaction interface is received, the user-defined transmission speed instruction is preferentially sent to the transmission component.

[0008] Preferably, the detection part also includes a positioning plate, two of which are provided and arranged on the etching machine body, and the two ends of the rotating rod are movably provided on the positioning plate. The rotating rod is provided with a plurality of rollers that can contact the upper surface of the plate surface, and the rotating wheels roll as the plate moves, driving the rotating rod to move up and down to reflect the thickness of the plate.

[0009] Preferably, a movable groove is provided on the positioning plate, and both ends of the rotating rod are connected to the connecting plate through bearings. A movable plate is provided on the connecting plate, and the movable plate moves in the movable groove. A baffle is provided on the positioning plate to block the movable groove.

[0010] Preferably, a damping member is also connected to the connecting plate, a fixing plate is provided on the damping member, and the damping member is fixed to the etching body through the fixing plate. The damping member is a damping cylinder when in use, and one end of the output shaft of the damping member is connected to the connecting plate through a connecting block.

[0011] Preferably, the distance sensor is provided on a connecting plate at one end of the rotating rod, and is used to detect the vertical displacement of the rotating rod, and the displacement is linearly corresponding to the thickness of the plate.

[0012] Preferably, both ends of the detection member are provided with protective members, and the protective members include a protective cover and a mounting plate. One end of the protective cover is fixedly connected to the fixing plate, and the other end of the protective cover is fixed to the connecting plate through the mounting plate. The protective cover can cover the distance sensor, thereby protecting the distance sensor and effectively preventing the etching liquid from splashing, dust from adhering, etc. from affecting the distance sensor. Preferably, one end of the protective cover connected to the fixed plate is provided with multiple mounting blocks, the fixed plate is provided with a through hole for the mounting block to pass through, the mounting plate is provided with a mounting hole, the mounting block is provided with a card slot, the mounting block passes through the through hole and the mounting hole, and the mounting plate is connected to the card slot on the mounting block through the mounting hole. The cooperation of multiple mounting blocks, through holes, mounting holes and card slots facilitates the disassembly and maintenance of the protective parts when needed, thereby improving the maintainability of the device.

[0013] Preferably, the human-computer interaction interface is provided on the etching machine body, and includes a thickness selection module and a transmission speed selection module. The thickness selection module is preset with a plurality of thickness gears, and a plurality of optional transmission speed values ​​are stored under each thickness gear.

[0014] Preferably, the controller has a built-in processor and memory, and the memory stores a thickness-water pressure mapping table and a thickness-speed mapping table, wherein the water pressure is positively correlated with the thickness, and the transmission speed is negatively correlated with the thickness.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention achieves precise thickness detection of magnesium alloy sheets and intelligent adjustment of etching parameters through the linkage between the detection element and the controller. The distance sensor captures the displacement of the rotating rod in real time and converts it into a thickness value. The controller automatically matches the water pressure and transmission speed according to a preset mapping relationship, avoiding problems such as deformation or over-etching of thin sheets due to water impact and insufficient etching of thick sheets. It significantly improves etching uniformity and accuracy. At the same time, a user command priority mechanism takes into account personalized process requirements and reduces quality risks caused by human error. The damping cylinder that cushions the impact of the rotating rod and the protective parts that isolate the sensor from the corrosive environment can ensure the long-term stable operation of the detection mechanism. The multi-speed preset and real-time parameter display of the human-machine interface simplify the operation process, and the flexible switching between automatic mode and manual mode not only meets the efficiency requirements of standardized production, but also can quickly adapt to special etching processes, greatly improving the industrial applicability and production efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a position diagram of the detection component and the electromagnetic control valve of the present invention; Figure 3 This is a structural diagram of the detection component of the present invention; Figure 4 This is an exploded view of the detection component structure of the present invention; Figure 5 A diagram showing the position of the connection block and the distance sensor of the present invention; Figure 6 For the present invention Figure 4 Enlarged view at point A in the middle; Figure 7 A structural view of the mounting plate of the present invention; Figure 8 It is a connection flow chart of the present invention; Figure 9 It is a control flow chart of the present invention.

[0018] Explanation of the figure numbers: 1. Etching machine body; 11. Conveying assembly; 12. Fixed cover plate; 13. Spray assembly; 14. Solenoid control valve; 2. Detection component; 21. Rotating rod; 22. Positioning plate; 23. Baffle; 24. Moving groove; 25. Connecting plate; 26. Movable plate; 27. Fixed plate; 28. Damping component; 29. ​​Connecting block; 3. Distance sensor; 4. Protective component; 41. Protective cover; 42. Mounting block; 43. Mounting plate; 44. Mounting hole; 45. Card slot; 5. Controller; 6. Human-computer interaction interface. DETAILED DESCRIPTION

[0019] The present invention will be described in further detail below with reference to the accompanying drawings.

[0020] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are for illustrative purposes only, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0021] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate directions or positions are based on the directions or positional relationships shown in the accompanying drawings, which are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the above terms should not be understood as limiting the present invention.

[0022] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the elements may be multiple, and the term "one" should not be understood as a limitation on the quantity. Example

[0023] See also Figure 1-9 , an etching device for magnesium alloy surface treatment, comprising an etching body 1, a conveying component 11, a spray component 13, a detection component 2, a controller 5 and a human-computer interaction interface 6; The etching body 1 provides support and installation foundation for the entire device. The transmission component 11 and the spray component 13 are both arranged in the etching body 1, wherein the transmission component 11 may include two sets of upper and lower transmission mechanisms, which are respectively located on the upper and lower sides of the etching body 1. When etching and washing the magnesium alloy plate, the lower transmission mechanism acts as an active mechanism to drive the magnesium alloy plate to move; when the plate enters the etching area, it pushes the upper transmission mechanism upward, so that the upper and lower transmission mechanisms form a limited clamping for the plate, effectively preventing the thinner plate from shifting under the impact of water flow (the specific structure of the transmission component 11 and the composition of the spray component 13 are existing public technologies and will not be described in detail here).

[0024] A detection part 2 is provided on the etching machine body 1, and the detection part 2 includes a rotating rod 21 that can move up and down, a positioning plate 22, a distance sensor 3, a damping part 28 and a protective part 4. Specifically, there are two positioning plates 22, and a fixed cover plate 12 is provided on the etching machine body 1. The positioning plate 22 can be fixedly installed on the fixed cover plate 12 of the etching machine body 1. The two ends of the rotating rod 21 are movably set on the positioning plate 22 through bearings. A plurality of rollers are installed on the rotating rod 21. When the magnesium alloy plate moves under the drive of the conveying assembly 11, the rollers contact the upper surface of the plate and roll with the plate, thereby driving the rotating rod 21 to move up and down. The displacement is directly related to the thickness of the plate.

[0025] A movable groove 24 is provided on the positioning plate 22, and both ends of the rotating rod 21 are connected to the bearings through connecting plates 25. A movable plate 26 is provided on the connecting plate 25, and the movable plate 26 can move flexibly in the movable groove 24 to realize the up and down displacement function of the rotating rod 21. A baffle 23 is provided above the positioning plate 22, which is used to limit the movement range of the movable plate 26 in the movable groove 24 to prevent excessive displacement of the rotating rod 21. At the same time, a damping member 28 is also connected to the connecting plate 25, and the damping member 28 is preferably a damping cylinder, one end of which is fixed to the fixed cover plate 12 of the etching body 1 through a fixing plate 27, and the other end is connected to the connecting plate 25 through a connecting block 29. The setting of the damping member 28 can effectively buffer the up and down movement of the rotating rod 21, and prevent the magnesium alloy plate from falling directly after being removed, causing large impact vibration, and can protect the detection member 2 and the distance sensor 3, and prevent them from being easily damaged by impact vibration for a long time.

[0026] The distance sensor 3 is mounted on the connecting plate 25 at one end of the rotating rod 21, and is used to accurately detect the vertical displacement of the rotating rod 21. According to the preset displacement-thickness conversion relationship, the detected displacement is converted into a plate thickness value, thereby realizing real-time determination of the thickness of the magnesium alloy plate. In addition, both ends of the detection member 2 are provided with a protective member 4, which includes a protective cover 41, a mounting plate 43 and a mounting block 42. One end of the protective cover 41 is fixedly connected to the fixing plate 27 through the mounting block 42, and the other end is fixed to the connecting plate 25 through the mounting plate 43. The mounting plate 43 is fixed to the fixing plate 27 through the mounting block 42. 3 is provided with a mounting hole 44, and a card slot 45 is provided on the mounting block 42. After the mounting block 42 passes through the through hole on the fixing plate 27 and the mounting hole 44 on the mounting plate 43, the mounting plate 43 is engaged with the card slot 45 on the mounting block 42 through the mounting hole 44 to ensure that the protective cover 41 is firmly installed. The protective cover 41 can effectively prevent the etching liquid from splashing, dust from adhering, etc. from affecting the distance sensor 3, thereby ensuring the reliability of the detection data. In order to ensure stable installation, the mounting plate 43 can also be provided with a magnet at the bottom so that the mounting plate 43 can be magnetically connected to the connecting plate 25.

[0027] The spray assembly 13 in the etching body 1 is provided with an electromagnetic control valve 14, which is connected to the liquid supply equipment through a pipeline for accurately controlling the liquid flow rate, thereby adjusting the pressure of the liquid sprayed by the spray assembly 13. The controller 5 is electrically connected to the detection part 2, the electromagnetic control valve 14 and the transmission assembly 11 respectively, and has a built-in processor and memory. The controller 5 is configured to: receive the displacement signal sent by the distance sensor 3, and calculate the plate thickness value according to the preset displacement-thickness conversion relationship; then, query the target water pressure value corresponding to the plate thickness value from the thickness-water pressure mapping table stored in the memory, and send an instruction to the electromagnetic control valve 14 to adjust the spray pressure to the target water pressure value; at the same time, query the initial transmission speed value corresponding to the plate thickness value from the thickness-speed mapping table, and send an instruction to the transmission assembly 11 to adjust the transmission speed to the initial transmission speed value.

[0028] In addition, the human-computer interaction interface 6 is arranged on the etching body 1 and can adopt a touch screen design to facilitate user operation. The human-computer interaction interface 6 includes a thickness selection module and a transmission speed selection module. The thickness selection module is preset with multiple thickness gears (such as 0.2mm, 0.5mm, 1mm, 2mm, etc.), and each thickness gear stores multiple optional transmission speed values ​​(such as 5m / min, 6m / min, 7m / min, etc. under the 0.2mm thickness gear). These preset parameters can be adjusted and modified according to actual production needs. When the user inputs a specific transmission speed instruction through the human-computer interaction interface 6, the controller 5 gives priority to executing the user-defined transmission speed instruction, fully meeting the user's personalized needs for different etching processes. The controller 5 gives priority to executing the user-defined transmission speed instruction, fully meeting the user's personalized needs for different etching processes. Example

[0029] When the thickness of the magnesium alloy sheet to be etched is 2 mm, the operator places the sheet on the transmission mechanism below the conveyor assembly 11. After starting the device, the drive motor of the transmission mechanism below drives the transmission belt to move the sheet toward the etching area. During the sheet movement, the upper surface of the sheet pushes the rotating rod 21 of the detection component 2 upward. The roller on the rotating rod 21 contacts and rolls with the surface of the sheet, ensuring that the displacement of the rotating rod 21 can accurately reflect the thickness of the sheet. The distance sensor 3 detects the vertical displacement of the rotating rod 21 in real time and transmits the displacement signal to the controller 5. After receiving the signal, the controller 5 calculates the thickness of the plate to be 2 mm based on the preset displacement-thickness conversion relationship. Subsequently, the controller 5 queries the thickness-water pressure mapping table in the memory and finds the target water pressure value corresponding to the thickness of 2 mm to be 1.5 MPa. The controller 5 sends a command to the electromagnetic control valve 14 to adjust the spray pressure of the spray assembly 13 to 1.5 MPa. At the same time, the controller obtains the initial conveying speed value corresponding to the thickness of 2 mm to be 15 m / min from the thickness-speed mapping table and controls the conveying assembly 11 to convey the plate at a speed of 15 m / min. If the user does not set the conveying speed through the human-computer interaction interface 6, the device will run at the above-mentioned automatically adjusted speed; if the user manually sets other speeds (such as 12m / min), the controller 5 will give priority to executing the user's instructions and convey the plate at a speed of 12m / min to complete the etching operation. Example

[0030] When processing a 0.2 mm thin magnesium alloy sheet, the displacement caused by the sheet pushing the rotating rod 21 is small. The distance sensor 3 detects the corresponding displacement signal and transmits it to the controller 5. After calculating and determining that the sheet thickness is 0.2 mm, the controller 5 queries the target water pressure value of 0.8 MPa from the thickness-water pressure mapping table, controls the electromagnetic control valve 14 to adjust the spray pressure to 0.8 MPa to avoid deformation of the sheet caused by excessive water flow impact. At the same time, the corresponding initial conveying speed value of 5 m / min is obtained from the thickness-speed mapping table, and the conveying assembly 11 is controlled to convey the sheet at a speed of 5 m / min. During this process, if the user selects a transmission speed of 8 m / min at the 0.2 mm thickness level through the human-computer interaction interface 6, the controller 5 will ignore the automatically adjusted speed and prioritize the user-selected speed of 8 m / min to complete the etching process of the thin plate, reflecting the flexibility of the device's combination of automatic adjustment and manual intervention.

[0031] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are intended only as examples and are not intended to limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations or modifications may be made to the embodiments of the present invention without departing from the principles described.

Claims

1. An etching device for magnesium alloy surface treatment, comprising an etching body (1), a conveying component (11) and a spraying component (13), characterized in that: The transmission component (11) and the spray component (13) are both arranged on the etching machine body (1); The etching machine body (1) is provided with a detection member (2), the detection member (2) includes a rotating rod (21) that can move up and down, and the detection member (2) is provided with a distance sensor (3) for determining the thickness of the plate according to the moving distance of the rotating rod (21); A spray assembly (13) is provided in the etching machine body (1), and the spray assembly (13) is provided with an electromagnetic control valve (14) and is connected to a liquid supply device via the electromagnetic control valve (14).

2. The etching device for magnesium alloy surface treatment according to claim 1, characterized in that: The controller (5) is electrically connected to the detection element (2), the electromagnetic control valve (14) and the transmission component (11); The controller (5) is configured as follows: receiving a displacement signal from a distance sensor (3) and calculating a plate thickness value based on a preset displacement-thickness conversion relationship; Querying a target water pressure value corresponding to the plate thickness value from an internally stored thickness-water pressure mapping table, and sending an instruction to the electromagnetic control valve (14) to adjust the spray pressure to the target water pressure value; querying an initial transmission speed value corresponding to the plate thickness value from an internally stored thickness-speed mapping table, and sending an instruction to a transmission component (11) to adjust the transmission speed to the initial transmission speed value; If a user-defined transmission speed instruction inputted from the human-computer interaction interface (6) is received, the user-defined transmission speed instruction is preferentially sent to the transmission component (11).

3. The etching device for magnesium alloy surface treatment according to claim 2, characterized in that: The detection member (2) further comprises a positioning plate (22), two of which are provided and arranged on the etching machine body (1), and both ends of the rotating rod (21) are movably arranged on the positioning plate (22), and the rotating rod (21) is provided with a plurality of rollers capable of contacting the upper surface of the plate, and the rollers roll as the plate moves, driving the rotating rod (21) to move up and down to reflect the thickness of the plate.

4. The etching device for magnesium alloy surface treatment according to claim 3, characterized in that: The positioning plate (22) is provided with a movable groove (24), and both ends of the rotating rod (21) are connected to the connecting plate (25) through bearings. The connecting plate (25) is provided with a movable plate (26), and the movable plate (26) is movable in the movable groove (24). The positioning plate (22) is provided with a baffle (23) that blocks the movable groove (24).

5. The etching device for magnesium alloy surface treatment according to claim 4, characterized in that: The connecting plate (25) is also connected to a damping member (28), a fixing plate (27) is provided on the damping member (28), and the damping member (28) is fixed to the etching machine body (1) through the fixing plate (27). The damping member (28) is a damping cylinder when in use, and one end of the output shaft of the damping member (28) is connected to the connecting plate (25) through a connecting block (29).

6. The etching device for magnesium alloy surface treatment according to claim 5, characterized in that: The distance sensor (3) is arranged on a connecting plate (25) at one end of the rotating rod (21) and is used to detect the vertical displacement of the rotating rod (21), wherein the displacement is linearly corresponding to the thickness of the plate.

7. The etching device for magnesium alloy surface treatment according to claim 6, characterized in that: Both ends of the detection member (2) are provided with protective members (4), the protective members (4) comprising a protective cover (41) and a mounting plate (43), one end of the protective cover (41) being fixedly connected to the fixing plate (27), and the other end of the protective cover (41) being fixed to the connecting plate (25) via the mounting plate (43).

8. The etching device for magnesium alloy surface treatment according to claim 7, characterized in that: A plurality of mounting blocks (42) are provided at one end of the protective cover (41) connected to the fixing plate (27); a through hole for the mounting blocks (42) to pass through is provided on the fixing plate (27); a mounting hole (44) is provided on the mounting plate (43); a clamping groove (45) is provided on the mounting block (42); the mounting block (42) passes through the through hole and the mounting hole (44); and the mounting plate (43) is clamped with the clamping groove (45) on the mounting block (42) through the mounting hole (44).

9. The etching device for magnesium alloy surface treatment according to claim 8, characterized in that: The human-machine interaction interface (6) is arranged on the etching machine body (1), and comprises a thickness selection module and a transmission speed selection module. The thickness selection module is preset with a plurality of thickness gears, and a plurality of optional transmission speed values ​​are stored under each thickness gear.

10. The etching device for magnesium alloy surface treatment according to claim 9, characterized in that: The controller (5) has a built-in processor and memory, and the memory stores a thickness-water pressure mapping table and a thickness-speed mapping table, wherein the water pressure is positively correlated with the thickness, and the transmission speed is negatively correlated with the thickness.

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