Rotary zinc spraying device for anti-corrosion machining of aluminum pipe

Abstract

The invention discloses a rotary zinc spraying device for aluminum pipe anti-corrosion machining, and relates to the technical field of aluminum pipe machining, and the rotary zinc spraying device is technically characterized by comprising a base, a control module and a translation mechanism are arranged on the base, a mounting rotating mechanism is arranged on one side of the translation mechanism, and a zinc spraying mechanism is arranged at the position, above the translation mechanism, of the base; the mounting and rotating mechanism comprises a mounting frame fixedly connected with a movable part of the translation assembly, a rotating assembly is fixedly arranged on the mounting frame, a first loading assembly is fixedly connected to an output shaft of the rotating assembly in the direction facing the zinc spraying mechanism, and the first loading assembly is used for fixedly loading the end part of the pipe; the zinc spraying mechanism comprises a zinc spraying frame fixedly connected with the base, and a thickness sensor and a zinc spraying assembly are arranged on the zinc spraying frame; the control module comprises a control unit and a timing unit; the problem that a zinc spraying layer is too thin can be avoided, and the corrosion resistance of the pipe is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum tube processing, in particular to a rotary zinc spraying device for anti-corrosion processing of aluminum tubes. Background Art

[0002] In industrial production and many engineering applications, aluminum tubes are widely used for conveying fluids and constructing structural frameworks due to their lightweight, high strength, and excellent thermal conductivity. However, aluminum tubes are highly susceptible to corrosion in complex operating environments, especially those with humid or corrosive media. This not only significantly shortens the tube's service life and increases equipment maintenance and replacement costs, but can also pose safety hazards and affect the stable operation of the entire system. Therefore, effective anti-corrosion treatment of aluminum tubes is crucial. Anti-corrosion treatment can significantly improve the corrosion resistance of aluminum tubes, ensuring their long-term stable use in harsh environments, reducing operating costs for enterprises, and improving production efficiency.

[0003] In order to meet the needs of aluminum tube anti-corrosion processing, the industry has developed and applied a variety of anti-corrosion technologies, among which the rotary zinc spraying device is a relatively common and effective anti-corrosion processing equipment. The existing rotary zinc spraying device for aluminum tube anti-corrosion processing mainly consists of a spray gun system, a rotary drive system, and an aluminum tube fixing device. During operation, the aluminum tube is fixed on a specific device, and the rotary drive system drives the aluminum tube to rotate at a constant speed. At the same time, the spray gun system sprays zinc powder onto the surface of the rotating aluminum tube at a certain pressure and speed, and uses the combination of zinc powder and the surface of the aluminum tube to form a zinc protective layer, thereby achieving the purpose of anti-corrosion. This device achieves the anti-corrosion treatment of aluminum tubes to a certain extent, improves the corrosion resistance of aluminum tubes, and is relatively simple to operate, suitable for production and processing scenarios of a certain scale.

[0004] Although existing rotary zinc spraying devices for aluminum tube corrosion protection have played an important role in this area, they still face several pressing challenges in practical application, most notably the overly thin zinc spray layer. Due to factors such as inaccurate spray parameter settings for the spray gun system, insufficient zinc powder delivery stability, and an irrational match between the aluminum tube's rotational speed and the spray gun's spray speed, the amount of zinc powder deposited on the aluminum tube surface is limited, preventing the formation of a sufficiently thick zinc protective layer. An overly thin zinc spray layer, in the face of harsh corrosive environments, is unable to provide long-term, effective protection and is easily penetrated by corrosion in a short period of time. This significantly reduces the aluminum tube's corrosion resistance, shortens its service life, and increases production costs and equipment maintenance difficulties. Summary of the Invention

[0005] In order to solve the above technical problems, the purpose of the present invention is to provide a rotary zinc spraying device for anti-corrosion processing of aluminum tubes, so as to avoid the problem of too thin zinc spraying layer and ensure the anti-corrosion performance of the tubes.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A rotary zinc spraying device for anti-corrosion processing of aluminum tubes comprises a base, a control module and a translation mechanism are arranged on the base, a mounting rotation mechanism is arranged on one side of the translation mechanism, and a zinc spraying mechanism is arranged on the base above the translation mechanism;

[0008] The mounting and rotating mechanism includes a mounting frame fixedly connected to the movable portion of the translation assembly, a rotating assembly is fixedly provided on the mounting frame, and an output shaft of the rotating assembly is fixedly connected to a first loading assembly in the direction of the zinc spraying mechanism, and the first loading assembly is used to fix and load the end of the pipe;

[0009] The zinc spraying mechanism comprises a zinc spraying frame fixedly connected to the base, and the zinc spraying frame is provided with a thickness sensor and a zinc spraying assembly;

[0010] The control module includes a control unit and a timing unit;

[0011] When the pipe has completed a normal zinc spraying, the translation assembly drives the installation rotation mechanism to return to the initial position. The translation assembly moves at a constant speed and pauses according to the interval time preset in the timing unit. After the pause, the rotation assembly rotates at a constant speed.

[0012] When the thickness sensor detects that the thickness of the zinc spraying layer is not less than the preset thickness, the timing unit starts to count down the preset pause time, and the preset pause time is not less than the time it takes for the pipe to rotate one circle. After the preset pause time ends, the translation component moves at a uniform speed within the preset interval time, and the moving distance is less than the distance covered by the zinc spraying component. When the preset interval time ends, the translation component pauses again;

[0013] When the thickness sensor detects that the thickness of the zinc sprayed layer is lower than the preset thickness, the timing unit records the defect existence time and starts the countdown of the preset start time. When the thickness of the zinc sprayed layer detected by the thickness sensor is not lower than the preset thickness, the defect existence time is recorded. After the preset start time ends, the zinc spraying component starts and performs supplementary zinc spraying. The supplementary zinc spraying time is equal to the defect existence time. When the supplementary zinc spraying time ends, the timing unit restarts the countdown of the preset pause time.

[0014] Preferably, the zinc spraying assembly includes a spray head, the spray head is connected to an external zinc powder supply device through a zinc spraying pipe, and a vacuum pump is provided on the zinc spraying pipe.

[0015] Preferably, a preheating chamber is provided between the zinc spraying pipe and the nozzle, and an electric induction heating coil and a temperature sensor are provided in the preheating chamber. The temperature sensor is linked with the electric induction heating coil according to a preset temperature range through a control unit.

[0016] Preferably, the translation mechanism is configured as an electric slide driven by a servo motor, the rotating assembly is configured as an electric turntable driven by a servo motor, and the control unit is configured as a programmable logic controller.

[0017] Preferably, an auxiliary rotation mechanism is installed on the side of the translation component away from the installation rotation mechanism, and the auxiliary rotation mechanism includes an auxiliary frame, and the auxiliary frame is rotatably connected to the second loading component through an auxiliary motor. The auxiliary motor is set as a servo motor, and the auxiliary motor has the same rotation speed as the rotation component.

[0018] Preferably, a transversely placed telescopic cylinder is provided between the auxiliary frame and the movable portion of the translation assembly, a slide rail is provided on the movable portion of the translation assembly, and a slide groove adapted to the slide rail is provided at the bottom of the auxiliary frame.

[0019] Preferably, the first loading assembly and the second loading assembly are configured as pneumatic inner support clamps, and the pneumatic inner support clamps are used to support and fix the inner wall of the pipe.

[0020] Preferably, a thinning and grinding mechanism is provided on the base, and the thinning and grinding assembly includes a grinding frame fixedly connected to the base, and the grinding frame is provided with a grinding liquid cylinder facing the pipe direction, and the movable part of the grinding liquid cylinder is installed with an arc-shaped grinding block through a detachable assembly, and the working surface of the grinding block is adapted to the preset standard outer wall of the pipe; when the pipe undergoes normal zinc spraying and supplementary zinc spraying and returns to its initial position, the grinding liquid cylinder extends a preset extension distance, and the rotating assembly and the auxiliary motor jointly speed up to the preset grinding speed, and then the translation assembly performs another round of left and right translation.

[0021] Preferably, the detachable component includes a clamping groove fixedly connected to the movable part of the polishing liquid cylinder, and the end of the polishing block away from the working surface is fixedly connected to a clamping block adapted to the clamping groove, and the opening direction of the clamping groove is opposite to the rotation direction of the pipe; the thrust received by the polishing block grinding stone is used to strengthen the connection between the clamping block and the clamping groove.

[0022] Preferably, a detection frame is fixedly connected to the movable part of the polishing liquid cylinder, and a distance sensor and an alarm are provided on the detection frame. A folding wear plate is provided at the bottom of the polishing block, and the folding wear plate is V-shaped and its folding part is located on the arc surface of the working surface of the polishing block. The thickness of the folding part of the folding wear plate is 0.05 to 0.5 mm and its material is the same as that of the polishing block. The distance sensor detects the distance between it and the bottom of the folding wear plate. When the folding wear plate breaks, the distance sensor detects that the distance between it and the bottom of the folding wear plate exceeds the preset alarm distance, and the control unit controls the alarm to sound an alarm.

[0023] The present invention has the following beneficial effects:

[0024] 1. The thickness sensor and the control module work together to achieve precise zinc spraying thickness control: In the rotary zinc spraying device, a thickness sensor is installed on the zinc spraying frame, and the control module includes a control unit and a timing unit. After the pipe completes a normal zinc spraying, the translation component drives the installation rotation mechanism to return to the initial position. The translation component moves at a constant speed and pauses according to the preset interval time in the timing unit. After the pause, the rotation component rotates at a constant speed. When the thickness sensor detects that the thickness of the zinc spraying layer is not less than the preset thickness, the timing unit starts the countdown for the preset pause time. After the countdown ends, the translation component moves at a constant speed within the preset interval and the moving distance is less than the distance covered by the zinc spraying component, and then pauses again. If the thickness sensor detects that the thickness of the zinc spraying layer is less than the preset thickness, the timing unit records the defect existence time and starts the countdown for the preset start time. When the thickness of the zinc spraying layer is not less than the preset thickness, the defect existence time is recorded. After the countdown for the preset start time ends, the zinc spraying component starts to spray additional zinc. The supplementary zinc spraying time is equal to the defect existence time. After the supplementary zinc spraying ends, the timing unit restarts the countdown for the preset pause time. The thickness of the zinc spraying layer is detected in real time by the thickness sensor, and the zinc spraying process is precisely controlled in conjunction with the control module, including operations such as pausing and replenishing the zinc spraying. This allows timely detection of areas where the zinc spraying layer is too thin and targeted replenishment to be performed, effectively avoiding the problem of the zinc spraying layer being too thin, thereby ensuring the corrosion resistance of the pipe.

[0025] 2. The optimized design of the zinc spraying assembly ensures effective zinc spraying: The zinc spraying assembly includes a nozzle, which is connected to an external zinc powder supply device through a zinc spraying pipe. The zinc spraying pipe is equipped with a vacuum pump. This design ensures that the zinc powder is sprayed evenly and stably, making the zinc spraying process more efficient and uniform. It helps to form a zinc spraying layer of uniform thickness, reduces the problem of local zinc spraying being too thin due to uneven zinc spraying, and thus ensures the corrosion resistance of the pipe. In addition, a preheating chamber is provided between the zinc spraying pipe and the nozzle. The preheating chamber is equipped with an electric induction heating coil and a temperature sensor. The temperature sensor is linked to the electric induction heating coil through a control unit according to a preset temperature range. Preheating the zinc powder can increase the activity of the zinc powder, allowing it to better adhere to the surface of the pipe, further ensuring the quality of the zinc spraying layer, preventing the zinc spraying layer from being too thin, and improving the corrosion resistance of the pipe.

[0026] 3. The auxiliary rotation mechanism ensures the stable rotation of the pipe, which is conducive to uniform zinc spraying: an auxiliary rotation mechanism is installed on the side of the translation assembly away from the installation rotation mechanism. The auxiliary rotation mechanism includes an auxiliary frame, and the auxiliary frame is connected to the second loading assembly through the rotation of the auxiliary motor. The auxiliary motor is set as a servo motor, and the auxiliary motor has the same speed as the rotation assembly. The auxiliary rotation mechanism and the installation rotation mechanism work together to make the pipe more stable during the rotation process, reduce the uneven zinc spraying caused by unstable rotation, avoid the zinc spraying layer being too thin, and ensure the corrosion resistance of the pipe. At the same time, a horizontal telescopic cylinder is provided between the auxiliary frame and the movable part of the translation assembly, and a slide rail is provided on the movable part of the translation assembly. A slide groove compatible with the slide rail is provided at the bottom of the auxiliary frame. This design can be flexibly adjusted according to the length of the pipe to ensure that the auxiliary rotation mechanism can accurately assist in the rotation of the pipe, further ensuring the uniformity of the zinc spraying process.

[0027] Fourth, a pneumatic internal support fixture ensures the pipe is securely fixed and stabilized, facilitating uniform zinc spraying. The first and second loading assemblies are equipped with pneumatic internal support fixtures, which support and secure the inner wall of the pipe. The pneumatic internal support fixture secures the pipe from the inside, keeping it stable during the zinc spraying process. This reduces uneven zinc spraying caused by pipe movement, prevents the zinc spray layer from being too thin, and ensures the pipe's corrosion resistance.

[0028] 5. The thinning and grinding mechanism optimizes the zinc spray layer to ensure corrosion resistance: A thinning and grinding mechanism is installed on the base. After the pipe has undergone normal zinc spraying and supplementary zinc spraying and returned to its initial position, the grinding cylinder extends a preset extension distance, the rotating assembly and the auxiliary motor jointly accelerate to the preset grinding speed, and then the translation assembly performs another round of left and right translation. The thinning and grinding mechanism can grind the zinc spray layer, removing any local over-thickness and making the zinc spray layer more uniform. It also compacts and optimizes the zinc spray layer to further ensure the quality of the zinc spray layer, avoid the problem of reduced corrosion resistance caused by local over-thickness of the zinc spray layer, and ensure the corrosion resistance of the pipe.

[0029] 6. Removable components and a detection and alarm system ensure the condition of the grinding block and maintain the quality of zinc spraying. The removable component includes a clip-on slot fixedly attached to the active portion of the grinding cylinder. A clip-on block that matches the clip-on slot is fixedly attached to the end of the grinding block facing away from the working surface. The slot's opening is oriented opposite to the direction of the pipe's rotation. The thrust applied to the grinding block during grinding strengthens the connection between the clip-on block and the clip-on slot. This removable design facilitates replacement of worn grinding blocks and ensures effective grinding. Furthermore, a detection frame fixedly attached to the active portion of the grinding cylinder houses a distance sensor and an alarm. A folded wear plate is installed at the base of the grinding block. The plate is V-shaped, with its fold located on the curved surface of the grinding block's working surface. The fold is 0.05 to 0.5 mm thick and made of the same material as the grinding block. A distance sensor detects the distance between the plate and the base. If the plate breaks, the sensor detects that the distance has exceeded a preset alarm distance, triggering an alarm via the control unit. The detection alarm system can promptly detect the wear of the grinding block and remind the operator to replace the grinding block to ensure the normal operation of the thinning and grinding mechanism, thereby maintaining the quality of the zinc spraying layer, avoiding improper treatment of the zinc spraying layer due to wear of the grinding block, and ensuring the corrosion resistance of the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 It is a three-dimensional diagram of the first embodiment of the present invention.

[0032] Figure 2 It is a top view of the first embodiment of the present invention.

[0033] Figure 3 This is a cross-sectional view of a nozzle according to the first embodiment of the present invention.

[0034] Figure 4 It is a side view of the second embodiment of the present invention.

[0035] Figure 5 Schematic diagram of the thinning and grinding mechanism of the second embodiment of the present invention (partial cross-section).

[0036] In the figure: 1. Base; 2. Control module; 3. Translation mechanism; 401. Mounting frame; 402. Rotating assembly; 403. First loading assembly; 501. Zinc spraying frame; 502. Thickness sensor; 531. Nozzle; 532. Zinc spraying pipe; 533. External zinc powder supply device; 534. Vacuum pump; 535. Preheating chamber; 536. Electric induction heating coil; 537. Temperature sensor; 601. Auxiliary frame; 602. Auxiliary motor; 603. Second loading assembly; 604. Telescopic cylinder; 605. Slide rail; 606. Slide trough; 701. Grinding frame; 702. Grinding liquid cylinder; 703. Grinding block; 741. Snap-in groove; 742. Snap-in block; 705. Detection frame; 706. Distance sensor; 707. Alarm; 708. Folding wear plate. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of the present invention.

[0038] First embodiment

[0039] like Figures 1 to 2 As shown, a rotary zinc spraying device for anti-corrosion processing of aluminum tubes includes a base 1, on which a control module 2 and a translation mechanism 3 are provided, a mounting rotation mechanism is provided on one side of the translation mechanism 3, and a zinc spraying mechanism is provided on the base 1 above the translation mechanism 3; the mounting rotation mechanism includes a mounting frame 401 fixedly connected to the movable part of the translation component, a rotation component 402 is fixedly provided on the mounting frame 401, and an output shaft of the rotation component 402 is fixedly connected to a first loading component 403 in the direction of the zinc spraying mechanism, and the first loading component 403 is used to fix and load the end of the pipe; the zinc spraying mechanism includes a zinc spraying frame 501 fixedly connected to the base 1, and a thickness sensor 502 and a zinc spraying component are provided on the zinc spraying frame 501; the control module 2 includes a control unit and a timing unit;

[0040] like Figures 1 to 2As shown, during the anti-corrosion processing of aluminum tubes, after the tubes complete a normal zinc spraying operation, the device enters the subsequent detection and adjustment process. The translation component drives the installation rotation mechanism (the tube is fixed on the installation rotation mechanism through the first loading component 403) to return to the initial position. During this process, the translation component moves at a constant speed and pauses according to the preset interval time in the timing unit. After the pause, the rotation component 402 starts to rotate the tube at a constant speed. The purpose of this is to allow the thickness sensor 502 on the zinc spraying frame 501 to fully detect the thickness of the zinc sprayed layer on the surface of the tube. Because the tube is rotating, the thickness sensor 502 can detect the thickness of the zinc sprayed layer at different positions of the tube to ensure the comprehensiveness of the detection.

[0041] When the thickness sensor 502 detects that the thickness of the zinc-sprayed layer is not less than the preset thickness, the timing unit starts counting down to the preset pause time. This preset pause time is not less than the time it takes for the pipe to rotate once. The purpose is to ensure that the pipe can rotate completely for at least one circle, so that the thickness sensor 502 has enough time to confirm that the thickness of the zinc-sprayed layer on all parts of the pipe meets the standard. After the countdown to the preset pause time ends, the translation component moves at a constant speed within the preset interval time, and the moving distance is less than the distance covered by the zinc-spraying component. This design ensures that the zinc-spraying component can still cover the surface of the pipe to a certain extent during the movement of the pipe, avoiding the appearance of blank areas of zinc-sprayed areas. When the preset interval time ends, the translation component pauses again and waits for the next detection or operation.

[0042] When the thickness sensor 502 detects that the thickness of the zinc-sprayed layer is lower than the preset thickness, the timing unit records the time the defect exists and starts the countdown of the preset start-up time. This means that the system has identified the area where the zinc-sprayed layer is too thin and starts recording the time the problem exists. When the thickness sensor 502 detects again that the thickness of the zinc-sprayed layer is not lower than the preset thickness, the defect existence time recording is completed. After the countdown of the preset start-up time ends, the zinc-spraying component starts and performs supplementary zinc spraying, and the supplementary zinc spraying time is equal to the previously recorded defect existence time. The principle of doing this is to accurately control the time of supplementary zinc spraying according to the time the area where the zinc-sprayed layer is too thin exists, to ensure that the too-thin area can obtain sufficient zinc powder supplementation so that the thickness of the zinc-sprayed layer reaches the preset standard. When the supplementary zinc spraying time ends, the timing unit restarts the countdown of the preset pause time and enters the detection and adjustment process of the zinc-sprayed layer thickness of the pipe again to ensure that the thickness of the zinc-sprayed layer of the entire pipe is uniform and meets the anti-corrosion requirements.

[0043] Through the above series of processes, the rotary zinc spraying device can detect the thickness of the zinc spraying layer on the pipe in real time, and automatically adjust the zinc spraying process according to the detection results to ensure that the thickness of the zinc spraying layer on the surface of the pipe is uniform and achieve good anti-corrosion effect.

[0044] like Figures 1 to 3As shown, the zinc spraying assembly includes a nozzle 531, which is connected to an external zinc powder supply device 533 via a zinc spraying pipe 532. A vacuum pump 534 is also installed on the zinc spraying pipe 532. At the start of the zinc spraying operation, the vacuum pump 534 is activated, creating a negative pressure environment within the zinc spraying pipe 532. Under the influence of the negative pressure, the zinc powder within the external zinc powder supply device 533 is drawn into the zinc spraying pipe 532 and transported along the pipe 532 toward the nozzle 531. When the zinc powder reaches the nozzle 531, due to its unique structural design, it is sprayed out from the nozzle 531 at a certain pressure and in a dispersed state, evenly coating the surface of the pipe being treated, forming a zinc powder coating that provides corrosion protection for the pipe.

[0045] like Figures 1 to 3 As shown, a preheating chamber 535 is provided between the zinc spraying pipe 532 and the nozzle 531. An electric induction heating coil 536 and a temperature sensor 537 are provided in the preheating chamber 535. The temperature sensor 537 is linked to the electric induction heating coil 536 according to a preset temperature range through a control unit. The electric induction heating coil 536 works based on the principle of electromagnetic induction. When alternating current passes through, an alternating magnetic field is generated around the coil. When the zinc powder passes through the preheating chamber 535, eddy currents are generated in the alternating magnetic field because the zinc powder itself has a certain conductivity or interacts with the surrounding medium. The heat generated by the eddy currents increases the temperature of the zinc powder. The temperature sensor 537 monitors the temperature in the preheating chamber 535 in real time and transmits the temperature signal to the control unit. The control unit pre-sets a temperature range for zinc powder preheating. When the temperature detected by temperature sensor 537 falls below the lower limit of the preset temperature range, the control unit increases the current supplied to the induction heating coil 536, causing it to generate more heat and raising the temperature within the preheating chamber 535. When the temperature detected by temperature sensor 537 rises above the upper limit of the preset temperature range, the control unit reduces the current supplied to the induction heating coil 536, reducing its heat generation and thereby lowering the temperature within the preheating chamber 535. This coordinated control between temperature sensor 537, the control unit, and the induction heating coil 536 stabilizes the temperature within the preheating chamber 535 within the preset range. Preheating the zinc powder enhances its activity, making it easier to adhere to the pipe surface when sprayed. It also helps the zinc powder blend better with the pipe surface, improving the quality and corrosion resistance of the sprayed zinc layer.

[0046] like Figure 1As shown, the translation mechanism 3 is configured as an electric slide driven by a servo motor, the rotation assembly 402 is configured as an electric turntable driven by a servo motor, and the control unit is configured as a programmable logic controller. Servo motors feature high precision, fast response, and excellent speed regulation. The programmable logic controller (control unit) sends specific control signals to the servo motor, which contain information such as the translation distance, speed, and direction. Upon receiving the signals, the servo motor precisely drives the electric slide for linear motion according to preset parameters. By precisely controlling the rotation angle and speed of the servo motor, the translation distance and speed of the electric slide can be precisely controlled, thereby meeting the translation requirements of the pipe at different stages of the zinc spraying process and ensuring that the pipe is properly positioned for zinc spraying. Similarly, the programmable logic controller sends control instructions to the servo motor of the rotation assembly 402, specifying parameters such as the rotation angle, speed, and start / stop times. The servo motor precisely drives the electric turntable according to the instructions, which in turn drives the first loading assembly 403 (for loading one end of the pipe) fixed to the electric turntable to rotate. Due to the high-precision control characteristics of the servo motor, the pipe can be rotated at a precise speed and angle, so that the surface of the pipe can be evenly sprayed with zinc, avoiding the problem of uneven zinc spraying.

[0047] like Figures 1 to 2 As shown, an auxiliary rotating mechanism is installed on the side of the translation assembly away from the mounting rotation mechanism. The auxiliary rotating mechanism includes an auxiliary frame 601, to which a second loading assembly 603 is rotatably connected via an auxiliary motor 602. The auxiliary motor 602 is configured as a servo motor, and the auxiliary motor 602 and the rotating assembly 402 rotate at the same speed. When the pipe is zinc-sprayed, the rotating assembly 402 mounted on the rotating mechanism rotates one end of the pipe, while the auxiliary motor 602 of the auxiliary rotating mechanism rotates the other end of the pipe at the same speed. This ensures that the pipe remains stable during rotation, preventing shaking or distortion due to inconsistent rotation speeds at both ends, thereby ensuring uniform zinc spraying on the pipe surface. A programmable logic controller can simultaneously control the servo motor of the rotating assembly 402 and the auxiliary motor 602 of the auxiliary rotating mechanism. Through a precise synchronous control algorithm, the speeds of the two motors are always consistent, working in coordination to achieve stable rotation of the pipe, thereby ensuring the quality of zinc spraying.

[0048] like Figures 1 to 2As shown, a horizontal telescopic cylinder 604 is installed between the auxiliary frame 601 and the movable portion of the translation assembly. A slide rail 605 is installed on the movable portion of the translation assembly, and a slide groove 606 is provided at the bottom of the auxiliary frame 601 to mate with the slide rail 605. The horizontal telescopic cylinder 604, the slide rail 605 on the movable portion of the translation assembly, and the slide groove 606 at the bottom of the auxiliary frame 601 together form an adjustable position adjustment mechanism for the auxiliary frame 601. When the distance between the auxiliary frame 601 and the mounting and rotating mechanism (where the first loading assembly 403 is located) needs to be adjusted to accommodate pipes of varying lengths, the programmable logic controller (integrated with the overall control logic of the device) sends a control signal to the telescopic cylinder 604. Upon receiving the signal, the telescopic cylinder 604 begins to operate, pushing or pulling the auxiliary frame 601 through the telescopic movement of the piston within the cylinder. Because the auxiliary frame 601 has a slide groove 606 at its bottom that matches the slide rail 605, the auxiliary frame 601 can slide smoothly along the slide rail 605 under the force of the telescopic cylinder 604, thereby achieving precise adjustment of the position of the auxiliary frame 601. In this way, whether it is a long or short pipe, the position of the auxiliary frame 601 can be adjusted so that the first loading assembly 403 and the second loading assembly 603 can accurately load and secure the two ends of the pipe.

[0049] like Figures 1 to 2 As shown, the first loading assembly 403 and the second loading assembly 603 are configured as pneumatic internal support clamps, which are used to support and fix the inner wall of the pipe. The pneumatic internal support clamp has the function of supporting and fixing the inner wall of the pipe. A retractable internal support structure is usually provided inside the pneumatic internal support clamp. When the pipe needs to be fixed, compressed air is introduced into the air path of the pneumatic internal support clamp. After the compressed air enters the interior of the clamp, it pushes the internal support structure to expand outward, and the internal support structure is in close contact with the inner wall of the pipe, and the pipe is firmly fixed to the first loading assembly 403 and the second loading assembly 603 by friction. This fixing method has the following advantages: First, it will not cause damage to the outer wall of the pipe, ensuring the integrity of the pipe surface, which is conducive to the subsequent zinc spraying anti-corrosion treatment; second, it can provide stable and reliable fixing force to ensure that the pipe will not shake or move during the zinc spraying process, thereby ensuring the uniform quality of the zinc spraying layer; third, the pneumatic control method is easy to operate and has a fast response speed, which can quickly clamp and release the pipe, thereby improving production efficiency.

[0050] Second embodiment

[0051] like Figures 4 to 5As shown, a thinning and grinding mechanism is provided on the base 1, and the thinning and grinding assembly includes a grinding frame 701 fixedly connected to the base 1, and the grinding frame 701 is provided with a grinding liquid cylinder 702 facing the pipe. The movable part of the grinding liquid cylinder 702 is installed with an arc-shaped grinding block 703 through a detachable component, and the working surface of the grinding block 703 is adapted to the preset standard outer wall of the pipe.

[0052] After the pipe has completed normal zinc spraying and supplementary zinc spraying operations and returned to its initial position, the thinning and grinding mechanism starts to work and treats the surface of the pipe. The grinding frame 701 is fixed on the base 1 to provide stable support for the entire thinning and grinding assembly. The grinding frame 701 is provided with a grinding cylinder 702 facing the pipe, and the movable part of the grinding cylinder 702 is installed with an arc-shaped grinding block 703 through a detachable component. When the grinding operation needs to be started, the grinding cylinder 702 is extended according to the preset extension distance. Since the working surface of the grinding block 703 is compatible with the preset standard outer wall of the pipe, during the extension process of the grinding cylinder 702, the grinding block 703 will gradually approach the pipe until its working surface contacts the surface of the pipe, preparing for the subsequent grinding operation. The design of the detachable component facilitates the replacement of the appropriate grinding block 703 according to pipes of different specifications, ensuring that the grinding block 703 can fit well with the surface of the pipe. After the grinding block 703 contacts the pipe surface, the rotating assembly 402 and the auxiliary motor 602 jointly accelerate to the preset grinding speed. The rotating assembly 402 drives the first loading assembly 403 (which secures one end of the pipe) to rotate, while the auxiliary motor 602 drives the second loading assembly 603 (which secures the other end of the pipe) to rotate synchronously at the same speed, ensuring stable rotation of the pipe at the preset grinding speed. Simultaneously, the translation assembly performs another round of left and right translation. The combined effects of the pipe's rotation and the translation assembly's movement allow the grinding block 703 to fully polish the pipe surface. This polishing operation removes any areas of excessive zinc coating thickness, unevenness, and impurities on the pipe surface, resulting in a more uniform zinc coating and a smoother surface, further improving the pipe's corrosion resistance and appearance. The preset grinding speed is designed to ensure a consistent grinding effect while avoiding surface damage caused by excessive speed or reduced production efficiency caused by excessive speed.

[0053] like Figures 4 to 5As shown, the detachable assembly includes a clamping groove 741 fixedly connected to the movable portion of the polishing fluid cylinder 702. The end of the polishing block 703 away from the working surface is fixedly connected to a clamping block 742 adapted to the clamping groove 741. The opening direction of the clamping groove 741 is opposite to the rotation direction of the pipe. When installing the polishing block 703, the clamping block 742 is aligned with the clamping groove 741 and inserted. Because the opening direction of the clamping groove 741 is opposite to the rotation direction of the pipe, when the pipe begins to rotate for polishing, the polishing block 703 is subjected to a thrust from the pipe surface. This thrust is in the opposite direction of the direction in which the clamping block 742 disengages from the clamping groove 741, which in turn strengthens the connection between the clamping block 742 and the clamping groove 741, firmly attaching the polishing block 703 to the movable portion of the polishing fluid cylinder 702 and ensuring that the polishing block 703 does not fall off due to stress during the polishing process. This detachable design facilitates quick replacement of the appropriate grinding block 703 according to pipes of different specifications or different grinding requirements, thereby improving the versatility and maintenance convenience of the equipment.

[0054] like Figures 4 to 5 As shown, a detection frame 705 is fixedly connected to the movable portion of the polishing fluid cylinder 702, and a distance sensor 706 and an alarm 707 are provided on the detection frame 705. A folded wear plate 708 is provided at the bottom of the polishing block 703. The folded wear plate 708 is V-shaped, and its folded portion is located on the arc surface of the working surface of the polishing block 703. The folded portion of the folded wear plate 708 is 0.05 to 0.5 mm thick and is made of the same material as the polishing block 703. During the polishing process, as the polishing block 703 wears, the folded wear plate 708 will also wear. The distance sensor 706 detects the distance between it and the bottom of the folded wear plate 708. When the folded wear plate 708 breaks, the distance sensor 706 detects that the distance between it and the bottom of the folded wear plate 708 exceeds the preset alarm distance, and the control unit controls the alarm 707 to sound an alarm.

[0055] Under normal operating conditions, due to the presence and thickness of folded wear plate 708, the distance detected by distance sensor 706 remains within a relatively stable range. However, if folded wear plate 708 breaks due to long-term wear, distance sensor 706 detects that its distance from the bottom of folded wear plate 708 exceeds the preset alarm distance. At this point, distance sensor 706 transmits a signal to the control unit. Upon receiving the signal, the control unit controls alarm 707 to issue an alarm signal, alerting the operator that grinding block 703 has worn to the point where it needs to be replaced. This allows for timely replacement of grinding block 703, ensuring grinding quality and the proper operation of the equipment.

[0056] This embodiment achieves stable installation and convenient replacement of the grinding block 703 through detachable components, and realizes real-time monitoring and alarm of the wear degree of the grinding block 703 through the cooperation of the distance sensor 706 and the folding wear plate 708, thereby ensuring the stability and reliability of the grinding operation.

[0057] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications based on the present invention to solve substantially the same technical problems and achieve substantially the same technical effects are all within the scope of protection of the present invention.

Claims

1. A rotary zinc spraying device for anti-corrosion processing of aluminum tubes, comprising a base (1), characterized in that: The base (1) is provided with a control module (2) and a translation mechanism (3); a mounting rotation mechanism is provided on one side of the translation mechanism (3); and the base (1) is provided with a zinc spraying mechanism above the translation mechanism (3); The mounting rotation mechanism comprises a mounting frame (401) fixedly connected to the movable portion of the translation assembly, a rotation assembly (402) being fixedly arranged on the mounting frame (401), an output shaft of the rotation assembly (402) being fixedly connected to a first loading assembly (403) in a direction facing the zinc spraying mechanism, and the first loading assembly (403) being used for fixing and loading the end of the pipe; The zinc spraying mechanism comprises a zinc spraying frame (501) fixedly connected to the base (1), and a thickness sensor (502) and a zinc spraying assembly are provided on the zinc spraying frame (501); The control module (2) comprises a control unit and a timing unit; When the pipe has completed a normal zinc spraying, the translation component drives the installation rotation mechanism to return to the initial position, the translation component moves at a constant speed and pauses according to the interval time preset in the timing unit, and after the pause, the rotation component (402) rotates at a constant speed; When the thickness sensor (502) detects that the thickness of the zinc spraying layer is not less than a preset thickness, the timing unit starts to count down to a preset pause time, the preset pause time is not less than the time it takes for the pipe to rotate once, after the preset pause time ends, the translation component moves at a uniform speed within a preset interval time, and the moving distance is less than the distance covered by the zinc spraying component, and after the preset interval time ends, the translation component pauses again; When the thickness sensor (502) detects that the thickness of the zinc spraying layer is lower than the preset thickness, the timing unit records the defect existence time and starts the countdown of the preset start time. When the thickness of the zinc spraying layer detected by the thickness sensor (502) is not lower than the preset thickness, the defect existence time recording is completed. After the preset start time ends, the zinc spraying component starts and performs supplementary zinc spraying. The supplementary zinc spraying time is equal to the defect existence time. When the supplementary zinc spraying time ends, the timing unit restarts the countdown of the preset pause time.

2. The rotary zinc spraying device for anti-corrosion processing of aluminum tubes according to claim 1, characterized in that: The zinc spraying assembly comprises a spray head (531), the spray head (531) is connected to an external zinc powder supply device (533) via a zinc spraying pipe (532), and a vacuum pump (534) is provided on the zinc spraying pipe (532).

3. The rotary zinc spraying device for anti-corrosion processing of aluminum tubes according to claim 2, characterized in that: A preheating chamber (535) is provided between the zinc spraying pipe (532) and the nozzle (531), and an electric induction heating coil (536) and a temperature sensor (537) are provided in the preheating chamber (535). The temperature sensor (537) is linked to the electric induction heating coil (536) according to a preset temperature range through a control unit.

4. The rotary zinc spraying device for anti-corrosion processing of aluminum tubes according to claim 1, characterized in that: The translation mechanism (3) is configured as an electric slide driven by a servo motor, the rotation assembly (402) is configured as an electric turntable driven by a servo motor, and the control unit is configured as a programmable logic controller.

5. The rotary zinc spraying device for anti-corrosion processing of aluminum tubes according to claim 4, characterized in that: An auxiliary rotating mechanism is installed on the side of the translation assembly away from the rotating mechanism. The auxiliary rotating mechanism includes an auxiliary frame (601). A second loading assembly (603) is rotatably connected to the auxiliary frame (601) via an auxiliary motor (602). The auxiliary motor (602) is configured as a servo motor. The auxiliary motor (602) has the same rotation speed as the rotating assembly (402).

6. The rotary zinc spraying device for anti-corrosion processing of aluminum tubes according to claim 5, characterized in that: A horizontally placed telescopic cylinder (604) is provided between the auxiliary frame (601) and the movable portion of the translation assembly. A slide rail (605) is provided on the movable portion of the translation assembly. A slide groove (606) adapted to the slide rail (605) is provided at the bottom of the auxiliary frame (601).

7. The rotary zinc spraying device for anti-corrosion processing of aluminum tubes according to claim 5, characterized in that: The first loading assembly (403) and the second loading assembly (603) are configured as pneumatic internal support clamps, and the pneumatic internal support clamps are used to support and fix the inner wall of the pipe.

8. The rotary zinc spraying device for anti-corrosion processing of aluminum tubes according to claim 5, characterized in that: The base (1) is provided with a thinning and grinding mechanism, and the thinning and grinding assembly includes a grinding frame (701) fixedly connected to the base (1), and the grinding frame (701) is provided with a grinding liquid cylinder (702) facing the pipe, and the movable part of the grinding liquid cylinder (702) is installed with an arc-shaped grinding block (703) through a detachable assembly, and the working surface of the grinding block (703) is adapted to the preset standard outer wall of the pipe; when the pipe is subjected to normal zinc spraying and supplementary zinc spraying and returns to the initial position, the grinding liquid cylinder (702) extends a preset extension distance, and the rotating assembly (402) and the auxiliary motor (602) are jointly accelerated to a preset grinding speed, and then the translation assembly performs another round of left and right translation.

9. The rotary zinc spraying device for anti-corrosion processing of aluminum tubes according to claim 8, characterized in that: The detachable component comprises a clamping groove (741) fixedly connected to the movable part of the polishing liquid cylinder (702); a clamping block (742) adapted to the clamping groove (741) is fixedly connected to one end of the polishing block (703) away from the working surface; the opening direction of the clamping groove (741) is opposite to the rotation direction of the pipe; the thrust received by the polishing stone of the polishing block (703) is used to strengthen the connection between the clamping block (742) and the clamping groove (741).

10. The rotary zinc spraying device for anti-corrosion processing of aluminum tubes according to claim 9, characterized in that: A detection frame (705) is fixedly connected to the movable part of the polishing liquid cylinder (702), and a distance sensor (706) and an alarm (707) are provided on the detection frame (705). A folding wear plate (708) is provided at the bottom of the polishing block (703), and the folding wear plate (708) is V-shaped and its folding portion is located on the arc surface of the working surface of the polishing block (703). The folding portion of the folding wear plate (708) has a thickness of 0.05 to 0.5 mm and its material is the same as that of the polishing block (703). The distance sensor (706) detects the distance between the distance sensor (706) and the bottom of the folding wear plate (708). When the folding wear plate (708) breaks, the distance sensor (706) detects that the distance between the distance sensor (706) and the bottom of the folding wear plate (708) exceeds a preset alarm distance, and the control unit controls the alarm (707) to sound an alarm.

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