A surface treatment apparatus for cast magnesium alloys

Abstract

The utility model discloses a kind of casting magnesium alloy surface treatment equipment, belong to metal surface treatment technical field, its technical scheme main points include rack, the right side of the rack is provided with controller, the inside of the rack is provided with conveying structure, the front side and the back of the top of the rack are provided with preheating structure and drying mechanism respectively, the application is by setting conveying structure and drying mechanism, after conveying structure can realize the continuous conveying of batch in order while carrying workpiece, satisfy batch production demand, the even flow wind scooper in drying frame makes the hot air generated by electric heating disc cylinder evenly blow to workpiece, recovery bucket collects unsaturated hot air, after monitoring filtration by hygrometry filter structure, by suction fan is extracted again and is transported to electric heating disc cylinder to carry out recycling, improve hot air utilization, reduce energy consumption, second temperature sensor real-time monitoring temperature ensures drying stability, solve the existing equipment hot air utilization low, energy consumption is big, the problem of low efficiency.

Description

Technical Field

[0001] This utility model relates to the field of metal surface treatment technology, and in particular to a surface treatment device for cast magnesium alloys. Background Technology

[0002] Cast magnesium alloys are widely used in aerospace, automobile manufacturing and other fields due to their low density and high strength. However, magnesium alloys are chemically active and easily form an oxide layer on their surface. They are also prone to corrosion in humid environments. Therefore, surface treatments such as cleaning, phosphating, spraying and drying are required to improve their corrosion resistance and adhesion. Among these, drying is a key step in ensuring surface quality in the surface treatment of cast magnesium alloys.

[0003] When spraying the surface of magnesium alloy workpieces with complex shapes, the surface treatment speed is slow, which reduces production efficiency. At the same time, uneven spraying and cross-interference of processes during spraying are also prone to occur, affecting the spraying effect. Therefore, a magnesium alloy surface spraying equipment is needed.

[0004] An existing patent (publication number: CN220991422U) discloses a magnesium alloy surface spraying treatment equipment. This utility model automatically controls the spraying mechanism to spray the magnesium alloy workpiece with a controller, and uses a spraying clamping mechanism to clamp the magnesium alloy workpiece for spraying. During spraying, the drive motor and drive motor drive the magnesium alloy workpiece to rotate and tilt, so as to achieve multi-sided uniform spraying of magnesium alloy. This solves the problems of low production efficiency of existing magnesium alloy spraying equipment, as well as the problems of uneven spraying and cross-interference of processes during spraying, which affect the spraying treatment effect.

[0005] To address the aforementioned issues, existing patents have provided solutions, but the drying process of existing magnesium alloy surface treatment equipment still has significant shortcomings: on the one hand, the hot air utilization rate is low, energy consumption is high, and drying efficiency is low, making it difficult to meet the surface drying requirements of magnesium alloys in mass production; on the other hand, due to the lack of a preheating treatment structure, a large amount of water stains remaining on the workpiece surface are directly exposed to subsequent hot air blowing, which can easily lead to localized sudden heating of the workpiece, resulting in significant differences in the rate of moisture evaporation in different parts of the surface. This not only easily leaves water stains but also causes surface oxidation due to localized high temperatures, seriously affecting the smoothness of the magnesium alloy surface.

[0006] Therefore, a surface treatment device for cast magnesium alloys is proposed. Utility Model Content

[0007] The purpose of this invention is to provide a surface treatment equipment for cast magnesium alloys, which can solve the significant shortcomings of existing magnesium alloy surface treatment equipment in the drying process: on the one hand, the hot air utilization rate is low, the energy consumption is high and the drying efficiency is low, making it difficult to meet the surface drying requirements of magnesium alloys in mass production; on the other hand, because no preheating treatment structure is set up, a large amount of water stains remaining on the surface of the workpiece are directly exposed to the subsequent hot air blowing, which can easily lead to local sudden heating of the workpiece, resulting in significant differences in the evaporation rate of moisture in different parts of the surface. This not only makes it easy for water stains to remain, but also causes surface oxidation due to local high temperature, which seriously affects the smoothness of the magnesium alloy surface.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a surface treatment equipment for cast magnesium alloys, including a frame, a controller is provided on the right side of the frame, a conveying structure is provided inside the frame, and a preheating structure and a drying mechanism are respectively provided on the front and rear sides of the top of the frame;

[0009] The drying mechanism includes a drying frame located at the rear top of the frame, a recovery hopper located in the middle inside the frame, a second temperature sensor located inside the recovery hopper, a humidity measuring filter structure located on the right side of the drying frame, the bottom of the humidity measuring filter structure being connected to the top right side of the recovery hopper, an exhaust fan located at the top of the drying frame, the absorption end of the exhaust fan being connected to the rear side of the humidity measuring filter structure, and the output end of the exhaust fan being connected to an electric heating plate, the interior of the electric heating plate containing an electric heating tube, and a flow equalization hood located on the top side inside the drying frame, the rear side of the top of the flow equalization hood being connected to the front side of the electric heating plate.

[0010] Preferably, the preheating structure includes a preheating frame disposed on the front side of the top of the frame, and a high-frequency blowing fan is embedded in the front side of the top of the preheating frame, the high-frequency blowing fan being located on the front side of the top of the conveying structure.

[0011] Preferably, an arc-shaped frame is provided on the top side inside the preheating frame, and an infrared preheating lamp is provided inside the arc-shaped frame.

[0012] Preferably, a first temperature sensor is provided at the bottom of both sides inside the arc-shaped frame, and the first temperature sensor is electrically connected to the controller.

[0013] Preferably, the moisture-measuring filtration structure includes a filter box disposed on the right side of the drying frame, the bottom of the filter box being connected to the top of the right side of the recovery hopper, the rear side of the filter box being connected to the absorption end of the exhaust fan, and a moisture-absorbing filter plate being disposed inside the filter box, the moisture-absorbing filter plate being made of moisture-absorbing material.

[0014] Preferably, a humidity sensor is provided on the right side of the filter box, the monitoring end of the humidity sensor is located inside the filter box, and the humidity sensor is electrically connected to the controller.

[0015] Preferably, the conveying structure includes a rotating shaft rotatably connected to the front and rear sides inside the frame, and a drive motor is provided on the front side of the left side of the frame, with the output end of the drive motor fixedly connected to the left side of the front rotating shaft.

[0016] Preferably, a perforated conveyor belt is sleeved on the outer side of the rotating shaft. The perforated conveyor belt is located on the outer side of the recovery hopper and at the bottom of the flow equalization guide hood, the high-frequency blower, and the infrared preheating lamp.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This application sets up a conveying structure and a drying mechanism. The conveying structure can carry workpieces and continuously convey them in batches in sequence to meet the needs of mass production. The air distribution hood in the drying frame blows the hot air generated by the electric heating plate evenly onto the workpieces. The recovery hopper collects unsaturated hot air, which is monitored and filtered by the humidity measuring filter structure and then drawn back by the exhaust fan and transported to the electric heating plate for recycling. This improves the utilization rate of hot air and reduces energy consumption. The second temperature sensor monitors the temperature in real time to ensure stable drying. This solves the problems of low hot air utilization rate, high energy consumption and low efficiency of existing equipment.

[0019] 2. By setting a preheating structure, this application can preheat the surface of the workpiece before it enters the drying mechanism, reducing localized sudden heating during subsequent drying, making the moisture evaporation rate more uniform. Combined with the hot air treatment of the drying mechanism, it reduces water stains and surface oxidation, solving the problem of poor smoothness caused by lack of preheating. Attached Figure Description

[0020] Figure 1 This is an overall structural diagram of the casting magnesium alloy surface treatment equipment of this utility model;

[0021] Figure 2 This is a structural diagram of the frame of this utility model;

[0022] Figure 3 This is a structural diagram of the drying mechanism of this utility model;

[0023] Figure 4 This is a structural diagram of the humidity measuring and filtering structure of this utility model;

[0024] Figure 5 This is a structural diagram of the conveying structure of this utility model;

[0025] Figure 6 This is a structural diagram of the preheating structure of this utility model.

[0026] In the diagram: 1. Frame; 2. Controller; 3. Conveying structure; 31. Rotating shaft; 32. Drive motor; 33. Perforated conveyor belt; 4. Preheating structure; 41. Preheating frame; 42. High-frequency blower; 43. Arc frame; 44. Infrared preheating lamp; 45. First temperature sensor; 5. Drying mechanism; 51. Drying frame; 52. Recovery hopper; 53. Second temperature sensor; 54. Humidity measuring and filtering structure; 541. Filter box; 542. Moisture-absorbing filter plate; 543. Humidity sensor; 55. Exhaust fan; 56. Electric heating plate; 57. Airflow equalization guide hood. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-5 The present invention provides the following technical solution:

[0029] A surface treatment device for cast magnesium alloy includes a frame 1, a controller 2 is provided on the right side of the frame 1, a conveying structure 3 is provided inside the frame 1, and a preheating structure 4 and a drying mechanism 5 are respectively provided on the front and rear sides of the top of the frame 1.

[0030] The drying mechanism 5 includes a drying frame 51 located at the top rear side of the frame 1. A recovery hopper 52 is located in the middle inside the frame 1. A second temperature sensor 53 is located inside the recovery hopper 52. A humidity measuring filter structure 54 is located on the right side of the drying frame 51. The bottom of the humidity measuring filter structure 54 is connected to the top right side of the recovery hopper 52. An exhaust fan 55 is located at the top of the drying frame 51. The absorption end of the exhaust fan 55 is connected to the rear side of the humidity measuring filter structure 54. The output end of the exhaust fan 55 is connected to an electric heating plate 56. The electric heating plate 56 contains an electric heating tube. A flow equalization guide hood 57 is located on the top side inside the drying frame 51. The rear side of the top of the flow equalization guide hood 57 is connected to the front side of the electric heating plate 56.

[0031] In this embodiment: the machine frame 1, controller 2, conveying structure 3, preheating structure 4 and drying mechanism 5 are used. First, the parameters are set by the controller 2. The conveying structure 3 carries the workpieces and conveys them in batches in sequence. The workpieces are preheated by the preheating structure 4 to reduce subsequent sudden heating. After entering the drying mechanism 5, the exhaust fan 55 delivers the hot air generated by the electric heating tube inside the electric heating disc 56 to the uniform air guide hood 57. The guide hood guides the hot air to be blown evenly onto the surface of the workpiece. The recovery hopper 52 collects the unsaturated hot air and the temperature is monitored by the second temperature sensor 53. After the hot air is monitored and filtered by the humidity measuring filter structure 54, it is drawn back to the electric heating disc 56 by the exhaust fan 55 for reheating and recycling. This not only improves the utilization rate of hot air and reduces energy consumption, but also makes the evaporation of moisture on the surface of the workpiece more uniform through the combination of preheating and uniform air delivery, reducing water stains and oxidation, meeting the needs of mass production while ensuring drying quality.

[0032] Specifically, such as Figure 6 As shown, the preheating structure 4 includes a preheating frame 41 disposed on the front side of the top of the frame 1. A high-frequency blowing fan 42 is embedded in the front side of the top of the preheating frame 41. The high-frequency blowing fan 42 is located on the front side of the top of the conveying structure 3.

[0033] Specifically, such as Figure 6 As shown, an arc-shaped frame 43 is provided on the top side inside the preheating frame 41, and an infrared preheating lamp 44 is provided inside the arc-shaped frame 43.

[0034] Specifically, such as Figure 6 As shown, a first temperature sensor 45 is provided at the bottom of both sides inside the arc frame 43, and the first temperature sensor 45 is electrically connected to the controller 2.

[0035] In this embodiment: by setting a preheating structure 4, when the workpiece enters the preheating frame 41 through the conveying structure 3, it is first blown off by a high-frequency fan 42 to remove all the water droplets remaining on the surface of the workpiece. Then, the workpiece surface is uniformly heated by the infrared preheating lamp 44 in the arc frame 43, so that the surface temperature of the workpiece initially rises. The first temperature sensors 45 on both sides monitor the preheating temperature in real time and feed it back to the controller 2 to ensure uniform preheating and avoid local overheating. This lays the foundation for reducing sudden heating in the subsequent drying process and makes the evaporation of moisture more stable.

[0036] Specifically, such as Figure 4 As shown, the moisture measuring and filtering structure 54 includes a filter box 541 located on the right side of the drying frame 51. The bottom of the filter box 541 is connected to the top right side of the recovery hopper 52. The rear side of the filter box 541 is connected to the absorption end of the exhaust fan 55. A moisture-absorbing filter plate 542 is provided inside the filter box 541. The moisture-absorbing filter plate 542 is made of moisture-absorbing material.

[0037] Specifically, such as Figure 4As shown, a humidity sensor 543 is provided on the right side of the filter box 541. The monitoring end of the humidity sensor 543 is located inside the filter box 541, and the humidity sensor 543 is electrically connected to the controller 2.

[0038] In this embodiment: by setting a humidity-measuring filter structure 54, the unsaturated hot air collected by the recovery hopper 52 enters the filter box 541. The humidity sensor 543 monitors the humidity of the incoming hot air and feeds it back to the controller 2 to monitor the humidity changes in real time so that the staff can check it in time. Then, the internal moisture-absorbing filter plate 542 adsorbs the water vapor and impurities carried by the hot air, purifying the hot air. The exhaust fan 55 draws the purified hot air back to the electric heating plate 56 for recycling. This not only ensures the quality of the hot air, but also optimizes the circulation efficiency through humidity monitoring, further reducing energy consumption.

[0039] Specifically, such as Figure 5 As shown, the conveying structure 3 includes a rotating shaft 31 rotatably connected to the front and rear sides inside the frame 1. A drive motor 32 is provided on the front side of the left side of the frame 1, and the output end of the drive motor 32 is fixedly connected to the left side of the front rotating shaft 31.

[0040] Specifically, such as Figure 5 As shown, a perforated conveyor belt 33 is sleeved on the outer side of the rotating shaft 31. The perforated conveyor belt 33 is located on the outer side of the recovery hopper 52 and at the bottom of the flow equalization guide hood 57, the high-frequency blower 42 and the infrared preheating lamp 44.

[0041] In this embodiment: by setting the conveyor structure 3, the drive motor 32 drives the rotating shaft 31 to rotate, so that the outer hollow conveyor belt 33 runs at a uniform speed. The workpiece is placed on the conveyor belt and passes through the interior of the preheating frame 41 and the drying frame 51 in sequence. The hollow design of the hollow conveyor belt 33 facilitates the shedding of water droplets and ensures that hot air can penetrate, which is convenient for the recycling and reuse of hot and humid air. At the same time, the continuous operation of the hollow conveyor belt 33 realizes the orderly conveying of batch workpieces, meets the continuous processing requirements of batch production, and improves the overall drying efficiency.

[0042] Working Principle: In the process of using the surface treatment equipment for cast magnesium alloys, firstly, the preheating temperature, drying temperature, conveying speed, and other parameters are set by the controller 2. Then, the magnesium alloy workpiece to be treated is placed on the perforated conveyor belt 33. The drive motor 32 is started, driving the rotating shaft 31 to rotate, so that the perforated conveyor belt 33 runs at a uniform speed. The workpiece enters the preheating frame 41 with the conveyor belt. The high-frequency fan 42 at the top of the preheating frame 41 first blows off the water droplets remaining on the surface of the workpiece. The water droplets fall through the perforated conveyor belt 33 to avoid water stains during subsequent heating. Next, the infrared preheating lamp 44 in the arc frame 43 heats the surface of the workpiece evenly. The first temperature sensor 45 on both sides monitors the temperature in real time and feeds it back to the controller 2 to ensure that the preheating temperature is stable, so that the surface temperature of the workpiece initially rises, reducing sudden heating for subsequent drying. After preheating, the workpiece enters the drying frame 51 with the perforated conveyor belt 33. The exhaust fan 55 delivers the hot air generated by the electric heating tube inside the electric heating plate 56 to the uniform air guide hood 57. After being guided by the hood, the hot air is blown evenly. The perforated design of the perforated conveyor belt 33 ensures that hot air can penetrate to the bottom of the workpiece, accelerating moisture evaporation. During the drying process, unsaturated hot air flows downward and is collected by the recovery hopper 52 inside the frame 1. The second temperature sensor 53 monitors the temperature of the recovered hot air in real time and feeds it back to the controller 2. The recovered hot air enters the filter box 541 through the pipe. The humidity sensor 543 monitors the humidity of the incoming hot air and feeds it back to the controller 2, monitoring the humidity changes in real time so that the staff can check them in time. The internal moisture-absorbing filter plate 542 absorbs the water vapor and impurities carried by the hot air, and then the exhaust fan 55 draws it back to the electric heating plate 56 for reheating, realizing the recycling of hot air. Finally, the dried workpiece is sent out of the drying frame 51 by the perforated conveyor belt 33, completing the entire drying process. Through the coordinated operation of various structures, the batch continuous processing of workpieces is achieved. Preheating, uniform air supply and hot air circulation reduce water stains and surface oxidation, while reducing energy consumption and ensuring the drying quality and smoothness of the magnesium alloy surface.

[0043] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A surface treatment device for cast magnesium alloys, comprising a frame (1), characterized in that: A controller (2) is provided on the right side of the frame (1), a conveying structure (3) is provided inside the frame (1), and a preheating structure (4) and a drying mechanism (5) are provided on the front and rear sides of the top of the frame (1), respectively. The drying mechanism (5) includes a drying frame (51) located on the rear side of the top of the frame (1). A recovery hopper (52) is located in the middle of the inside of the frame (1). A second temperature sensor (53) is located inside the recovery hopper (52). A humidity measuring filter structure (54) is located on the right side of the drying frame (51). The bottom of the humidity measuring filter structure (54) is connected to the top right side of the recovery hopper (52). An exhaust fan (55) is located on the top of the drying frame (51). The absorption end of the exhaust fan (55) is connected to the rear side of the humidity measuring filter structure (54). The output end of the exhaust fan (55) is connected to an electric heating plate (56). The inside of the electric heating plate (56) is an electric heating tube. A flow equalization guide hood (57) is located on the top side of the inside of the drying frame (51). The rear side of the top of the flow equalization guide hood (57) is connected to the front side of the electric heating plate (56).

2. The surface treatment equipment for cast magnesium alloys according to claim 1, characterized in that: The preheating structure (4) includes a preheating frame (41) disposed on the front side of the top of the frame (1), and a high-frequency blower (42) is embedded in the front side of the top of the preheating frame (41). The high-frequency blower (42) is located on the front side of the top of the conveying structure (3).

3. The surface treatment equipment for cast magnesium alloys according to claim 2, characterized in that: An arc-shaped frame (43) is provided on the top side inside the preheating frame (41), and an infrared preheating lamp (44) is provided inside the arc-shaped frame (43).

4. The surface treatment equipment for casting magnesium alloys according to claim 3, characterized in that: The bottom of both sides of the arc frame (43) is provided with a first temperature sensor (45), and the first temperature sensor (45) is electrically connected to the controller (2).

5. The surface treatment equipment for cast magnesium alloys according to claim 1, characterized in that: The moisture-measuring filter structure (54) includes a filter box (541) located on the right side of the drying frame (51). The bottom of the filter box (541) is connected to the top right side of the recovery hopper (52). The rear side of the filter box (541) is connected to the absorption end of the exhaust fan (55). A moisture-absorbing filter plate (542) is provided inside the filter box (541). The moisture-absorbing filter plate (542) is made of moisture-absorbing material.

6. The surface treatment equipment for casting magnesium alloys according to claim 5, characterized in that: A humidity sensor (543) is provided on the right side of the filter box (541). The monitoring end of the humidity sensor (543) is located inside the filter box (541). The humidity sensor (543) is electrically connected to the controller (2).

7. The surface treatment equipment for cast magnesium alloys according to claim 1, characterized in that: The conveying structure (3) includes a rotating shaft (31) rotatably connected to the front and rear sides inside the frame (1). A drive motor (32) is provided on the front side of the left side of the frame (1), and the output end of the drive motor (32) is fixedly connected to the left side of the front rotating shaft (31).

8. The surface treatment equipment for casting magnesium alloys according to claim 7, characterized in that: A perforated conveyor belt (33) is fitted on the outside of the rotating shaft (31). The perforated conveyor belt (33) is located on the outside of the recovery hopper (52). The perforated conveyor belt (33) is located at the bottom of the flow equalization guide hood (57), the high-frequency blower (42), and the infrared preheating lamp (44).

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