A switching power supply shell spraying device

Abstract

The utility model discloses a switching power supply shell spraying device belongs to switching power supply shell processing technical field, including the support frame for providing each component mounting space, the side surface mounting of support frame has power part, the output of power part installs the conveying part for switching power supply shell transportation, the side surface mounting of conveying part has two vertical support for supporting, wherein one side surface mounting of vertical support has air -dry box, the vertical inner wall mounting of air -dry box is used for the support and the limitation air flow's special -shaped turbulence support plate, the inside rotation of special -shaped turbulence support plate installs two rotating column, the periphery mounting of two rotating column has a plurality of for disturbing the turbulence board of gas flow, and the device ensures that switching power supply shell each part receives wind even, avoids the coating defect that leads to because air -dry uneven, such as local flow hangs, bubble etc.

Description

Technical Field

[0001] This utility model belongs to the field of switching power supply housing processing technology, and in particular, a switching power supply housing spraying device. Background Technology

[0002] Switching power supply casings are mostly exposed to various environments, and the coating formed by spraying provides effective protection for the casing. The coating can isolate the casing from air, moisture, dust, and other substances, thereby slowing down the oxidation and corrosion rate of the casing and extending the service life of the switching power supply. Air drying is required during spraying, but poor airflow uniformity can lead to significant differences in the drying speed of different areas of the casing surface. Uneven coating drying can cause quality defects, prolong the production cycle, and reduce production efficiency.

[0003] A search revealed a Chinese patent document (application publication number CN112892976A), which discloses a spraying device for a switching power supply casing, belonging to the field of switching power supply casing processing technology. The device includes a processing table, a rotary conveyor, a spraying device, a waste paint collection device, and a drying device. The processing table is equipped with symmetrical support columns, and the rotary conveyor is mounted on two support columns. The spraying device includes a stirring component and a spraying component, with the stirring component positioned on top of the rotary conveyor. This invention, through the coordinated operation of the various devices, enables continuous and uninterrupted spraying of the switching power supply casing, improving processing efficiency. While the device meets basic usage requirements, its poor airflow uniformity leads to significant differences in drying speed across different areas of the casing surface, resulting in uneven coating drying, quality defects, extended production cycles, and reduced production efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a spraying device for the casing of a switching power supply to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a switching power supply housing spraying device, comprising a support frame for providing installation space for each component, a power unit mounted on the side of the support frame, and a conveying unit for transporting the switching power supply housing mounted on the output end of the power unit; Two vertical supports are installed on the side of the conveying unit. A drying box is installed on the side of one of the vertical supports. An irregularly shaped baffle support plate for supporting and restricting the airflow direction is installed on the vertical inner wall of the drying box. Two rotating columns are rotatably installed inside the irregularly shaped baffle support plate. Multiple baffles for disrupting the gas flow direction are installed on the outer periphery of the two rotating columns.

[0006] Preferably, the vertical inner wall of the drying box is welded with an I-shaped air guide plate for cooperating with the irregularly shaped baffle support plate, and the surface of the irregularly shaped baffle support plate is provided with a first ventilation opening.

[0007] Preferably, a second ventilation opening is provided between the irregularly shaped turbulence support plate and the I-shaped air guide plate, a third ventilation opening is provided between the I-shaped air guide plate and the vertical inner wall of the drying box, and an air outlet guide hopper is connected to the bottom of the drying box.

[0008] Preferably, the drying box is provided with air inlets on both sides for air to enter, and a fan is installed inside each of the two air inlets.

[0009] Preferably, four filter plate frames are slidably and symmetrically installed on the vertical inner wall of the drying box, and filter plates for adsorbing air impurities are installed inside the four filter plate frames. An inclined air inlet slot is provided on the top of the irregularly shaped turbulence support plate.

[0010] Preferably, a sprayer for spraying the casing of a switching power supply is mounted on the side of another vertical bracket. A nozzle is mounted on the end of the sprayer. An air tank is installed inside the support frame. The air tank is connected to the air inlet of the sprayer through a connecting pipe. Four casters for movement are mounted on the bottom of the support frame.

[0011] Preferably, a limiting plate is installed on the side of the conveying section to restrict the movement of the switching power supply housing.

[0012] Compared with the prior art, the technical effects and advantages of this utility model are as follows: This switching power supply casing coating device, thanks to its baffle structure, features rotating columns inside the irregularly shaped baffle support plate and baffles on the outer periphery. Driven by purified air, these rotations effectively disrupt airflow, breaking the laminar flow pattern. Combined with the guidance of the first, second, and third vents and the I-shaped air guide plate, this significantly improves airflow uniformity. This structure ensures uniform airflow across all parts of the switching power supply casing, preventing coating defects such as localized runs and bubbles caused by uneven drying, thus significantly improving drying quality.

[0013] This switching power supply housing spraying device, thanks to its filter plate and filter plate holder structure, allows the filter plates within the four filter plate holders to adsorb impurities in the air entering the drying chamber, preventing dust and particles from adhering to the uncured coating surface. Simultaneously, the filter plate holders employ a sliding symmetrical installation method, facilitating periodic disassembly and replacement of the filter plates and ensuring stable purification performance. This structure reduces contamination on the coating surface, improving the appearance quality of the switching power supply housing and the coating adhesion. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the internal structure of the present invention; Figure 4 This utility model Figure 2 Enlarged view of point A in the middle; Figure 5 This utility model Figure 3 Enlarged view of point B in the middle.

[0016] Explanation of reference numerals in the attached figures: In the diagram: 1. Support frame; 101. Casters; 102. Power unit; 103. Conveying unit; 104. Vertical support; 105. Sprayer; 106. Nozzle; 107. Air tank; 108. Limiting plate; 2. Drying box; 201. Air inlet; 202. Fan; 203. Filter plate frame; 204. Filter plate; 205. Inclined air inlet slot; 3. Irregularly shaped baffle support plate; 301. Rotating column; 302. Baffle plate; 303. First vent; 304. I-shaped air guide plate; 305. Second vent; 306. Third vent; 307. Air outlet guide hopper. Detailed Implementation

[0017] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0018] The connection method can be any existing method, such as bonding, welding, or bolting, depending on the actual needs.

[0019] like Figures 1 to 5The illustrated switching power supply casing spraying device includes a support frame 1 for providing mounting space for various components. A power unit 102 is mounted on the side of the support frame 1. The power unit 102 typically consists of a drive motor, a reducer, etc. Its main function is to provide power, transmitting it to a conveyor unit 103 through its output end, driving the conveyor unit 103 to operate and providing power support for the transportation of the switching power supply casing. The output end of the power unit 102 is equipped with the conveyor unit 103 for transporting the switching power supply casing. The conveyor unit 103 includes components such as a conveyor belt and drive rollers, wherein the conveyor belt is made of a material suitable for spraying the switching power supply casing. Its function is to carry and transport the switching power supply casing under the drive of the power unit 102, accurately delivering the casing to the spraying and drying positions according to a preset path, ensuring the continuity of the production process. The output end of the power unit 102 drives the conveyor unit 103 to operate through gear meshing transmission. The output shaft of the drive motor is connected to the drive gear, and a driven gear is installed at one end of the transmission roller of the conveyor section 103. The drive gear and the driven gear mesh precisely, and the rigid transmission between the gears ensures efficient power transmission, avoiding the slippage problem of belt drive. This allows the conveyor belt of the conveyor section 103 to maintain a stable running speed (error ≤ 0.1m / min), ensuring that the power supply housing can reach the spraying and drying positions according to the preset rhythm. The conveyor belt is made of Teflon-coated fiberglass cloth, which has three core characteristics: first, high temperature resistance, which can withstand the temperature environment above 60℃ in the drying chamber 2 without deformation; second, non-stick properties, with a smooth surface that does not chemically react with the paint, preventing the paint from sticking to the conveyor belt during spraying and reducing the cleaning frequency; and third, corrosion resistance, which can resist the erosion of paint solvents and extend service life. At the same time, the surface of the conveyor belt is frosted to increase the friction with the power supply housing and prevent the housing from sliding or shifting during transportation. Two vertical supports 104 are installed on the side of the conveying unit 103. A drying box 2 is installed on the side of one of the vertical supports 104. An irregularly shaped baffle support plate 3 for supporting and restricting the airflow direction is installed on the vertical inner wall of the drying box 2. Two rotating columns 301 are rotatably installed inside the irregularly shaped baffle support plate 3. Multiple baffles 302 for disrupting the airflow direction are installed on the outer periphery of the two rotating columns 301. The purified air enters through the inclined air inlet slot 205 at the top of the irregularly shaped baffle support plate 3. The two rotating columns 301 are rotatably installed inside the irregularly shaped baffle support plate 3. The purified air will drive the multiple baffles 302 on the outer periphery of the rotating columns 301 to rotate with the rotating columns 301, which will disrupt the airflow and make the airflow distribution more uniform. Meanwhile, the first vent 303 on the surface of the irregularly shaped baffle support plate 3, the second vent 305 between the irregularly shaped baffle support plate 3 and the I-shaped air guide plate 304, and the third vent 306 between the I-shaped air guide plate 304 and the vertical inner wall of the drying box 2 cooperate with each other to guide the airflow direction together with the irregularly shaped baffle support plate 3 and the I-shaped air guide plate 304, further optimizing the airflow distribution.

[0020] The vertical inner wall of the drying box 2 is welded with an I-shaped air guide plate 304 for cooperating with the irregularly shaped baffle support plate 3. The surface of the irregularly shaped baffle support plate 3 is provided with a first ventilation opening 303. A second ventilation opening 305 is provided between the irregularly shaped baffle support plate 3 and the I-shaped air guide plate 304. A third ventilation opening 306 is provided between the I-shaped air guide plate 304 and the vertical inner wall of the drying box 2. The bottom of the drying box 2 is connected to an air outlet guide bucket 307. The airflow that has been disturbed and guided acts on the switching power supply housing on the conveying part 103 through the air outlet guide bucket 307 to air dry the painted housing.

[0021] The drying chamber 2 has air inlets 201 on both sides for air intake, and a fan 202 is installed inside each air inlet 201. Four filter plate holders 203 are slidably and symmetrically installed on the vertical inner wall of the drying chamber 2. Filter plates 204 for adsorbing air impurities are installed inside the four filter plate holders 203. An inclined air inlet slot 205 is provided on the top of the irregularly shaped turbulence support plate 3. The air inlets 201 on both sides of the drying chamber 2 provide channels for air to enter. The fans 202 installed inside the two air inlets 201 operate to draw outside air into the drying chamber 2. The air first passes through the filter plates 204 installed inside the four filter plate holders 203, where the filter plates 204 adsorb impurities in the air. The purified air then enters the interior of the drying chamber 2.

[0022] Another vertical support 104 has a sprayer 105 mounted on its side for painting the power supply casing. The sprayer 105 mainly consists of a paint storage tank, a spray gun body (with the nozzle 106 as an important component), and a control valve. Its function is to uniformly spray paint onto the surface of the power supply casing through the nozzle 106 under gas pressure, completing the casing painting operation. The bottom of the paint storage tank is connected to the spray gun body via a stainless steel feed pipe, and a micro gear pump is installed in the middle of the feed pipe. When the sprayer 105 is started, the gear pump operates synchronously, pumping the paint from the storage tank into the spray gun body at a stable flow rate (adjustable from 5-10 ml / s). Combined with the gas pressure (0.3-0.5 MPa) provided by the gas tank 107, the paint is fully atomized inside the spray gun before being sprayed out from the nozzle 106. The flow rate of the gear pump can be adjusted in conjunction with the gas pressure through the control system to ensure uniform spraying of coatings of different viscosities. (Details omitted). The sprayer 105 has a nozzle 106 installed at its end. When the power supply housing is transported to the spraying position, the air tank 107 installed inside the support frame 1 provides gas pressure to the air inlet of the sprayer 105 through a connecting pipe. Another sprayer 105, mounted on the side of the vertical bracket 104, sprays the coating through the nozzle 106 at its end under gas pressure, performing a spraying operation on the power supply housing. The support frame 1 has an air tank 107 installed inside. A precision pressure regulating valve (accuracy ±0.01MPa) is installed at the output end of the air tank 107. The output pressure value can be manually set via a knob. The pressure regulating valve has a built-in pressure sensor that monitors the output air pressure in real time and feeds it back to the pressure gauge. When the air pressure inside the air tank 107 drops due to air consumption, the pressure regulating valve automatically opens the replenishment air channel (connected to an external air compressor) to maintain the output pressure within the set range. In addition, the gas tank 107 is equipped with a pressure relay, which automatically cuts off the working signal of the sprayer 105 when the air pressure is lower than 0.2MPa to prevent spraying defects caused by insufficient pressure. The gas tank 107 consists of a tank body, a pressure gauge, a safety valve, and connecting pipes. As a pressure source, its function is to store compressed air and provide a stable gas pressure to the air inlet of the sprayer 105 through the connecting pipe, providing power for the spraying of paint. The gas tank 107 is connected to the air inlet of the sprayer 105 through the connecting pipe. The bottom of the support frame 1 is equipped with four casters 101 for movement. The side of the conveyor 103 is equipped with a limiting plate 108 to restrict the movement of the switching power supply housing. The support frame 1 provides installation space for the various components of the entire device, and the four casters 101 at its bottom facilitate the movement of the device. The power unit 102 operates, and its output drives the conveyor 103 to run. The conveyor 103 is responsible for transporting the switching power supply housing. The limiting plate 108 installed on the side of the conveying section 103 can restrict the movement of the switching power supply housing, prevent the housing from deviating from the preset path during transportation, and ensure that the housing can accurately reach the spraying and drying position.

[0023] To overcome the impact of the environment on the equipment, optimizations can be made in multiple aspects. The drive motor of the power unit 102 is equipped with a dust cover, and the reducer adopts a sealed design to prevent dust and moisture from affecting operation. The conveyor belt of the conveyor unit 103 is made of wear-resistant and corrosion-resistant materials, and the surface of the transmission rollers is treated with rust prevention to avoid corrosion of components caused by a humid environment. The paint storage tank of the sprayer 105 is equipped with a temperature control device to prevent changes in paint viscosity due to temperature variations, and the control valve adopts an anti-clogging structure to cope with dusty environments. The tank body of the gas tank 107 is treated with anti-corrosion measures, the pressure gauge and safety valve are calibrated regularly, and the connecting pipes are made of high-pressure resistant and anti-aging materials. Meanwhile, wind deflectors are installed around the equipment to reduce the impact of airflow on spraying accuracy. When the ambient humidity is high, a dehumidification device is installed to ensure that all components work together in a suitable environment. The power unit 102 stably drives the conveyor unit 103, the air tank 107 provides stable air pressure, and the sprayer 105 sprays accurately, ensuring efficient operation of the equipment. The device is equipped with a PLC control panel, which is connected to the drive motor of the power unit 102, the control valve of the sprayer 105 and the gear pump, the fan 202, and the pressure regulating valve of the air tank 107 via signal lines. Operators can preset parameters such as conveying speed, spraying time, and drying air speed. The control panel automatically coordinates the operation of each component according to the preset program: when the outer shell reaches the spraying position, the limit plate 108 triggers the proximity switch, and the signal is transmitted to the PLC. The PLC immediately controls the conveyor section 103 to stop, the air tank 107 to supply air, and the sprayer 105 to start. After spraying is completed, the PLC instructs the conveyor section 103 to continue operating, and at the same time, the fan 202 is started in advance to prepare for drying, realizing full-process automated coordination. The air tank 107 is welded from Q345R pressure vessel special steel plate, and a spring-type safety valve is installed on the top. When the internal air pressure exceeds 0.8MPa, it automatically releases pressure to prevent overpressure explosion. When the device is running, infrared safety light curtains are set around the spraying area and the drying box 2. When a human limb enters the danger area, the light curtain immediately sends a signal to the PLC. The PLC controls all power components to stop urgently and issues an audible and visual alarm. In addition, both the filter plate holder 203 and the irregularly shaped turbulence support plate 3 adopt a quick-release structure. When disassembling, the power supply of the device must be cut off first to avoid safety accidents caused by live operation.

[0024] Working principle In use, the power supply casing spraying device first provides the mounting base for each component with the support frame 1, and the bottom casters 101 facilitate movement. The power unit 102 drives the conveyor unit 103 to transport the power supply casing, and the limit plate 108 restricts the movement of the casing to ensure accurate arrival at the spraying and drying position. When the casing reaches the spraying position, the air tank 107 in the support frame 1 supplies air to the sprayer 105 through the connecting pipe. Under the action of air pressure, the sprayer 105 sprays paint through the nozzle 106 to complete the spraying. The sprayed casing is then transported to the drying box 2. The fan 202 draws in air through the air inlet 201, which is purified by the filter plate 204 in the filter plate frame 203. The purified air enters from the inclined air inlet slot 205 at the top of the irregularly shaped baffle support plate 3, driving the rotating column 301 and the outer peripheral baffle plate 302 to rotate, disturbing the airflow to make it more uniform. Simultaneously, the first vent 303, the second vent 305, and the third vent 306, together with the irregularly shaped baffle support plate 3 and the I-shaped air guide plate 304, guide the airflow, which ultimately acts on the outer casing through the air outlet guide hopper 307 for drying, completing the exhaust of the dried airflow. All components work together to achieve the transportation, painting, and drying of the outer casing.

[0025] It should be noted that in this article, relational terms such as one and two are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A spraying device for a switching power supply housing, comprising a support frame (1) for providing mounting space for various components, characterized in that: The support frame (1) is equipped with a power unit (102) on its side, and the output end of the power unit (102) is equipped with a conveying unit (103) for transporting the housing of the switching power supply. The conveying unit (103) has two vertical supports (104) installed on its side. One of the vertical supports (104) has a drying box (2) installed on its side. The vertical inner wall of the drying box (2) has a shaped turbulence support plate (3) for supporting and restricting the airflow direction. The shaped turbulence support plate (3) has two rotating columns (301) rotatably installed inside. The outer periphery of the two rotating columns (301) has multiple turbulence plates (302) for disrupting the gas flow direction.

2. The switching power supply housing spraying device according to claim 1, characterized in that: The vertical inner wall of the drying box (2) is welded with an I-shaped air guide plate (304) for cooperating with the irregularly shaped turbulence support plate (3), and the surface of the irregularly shaped turbulence support plate (3) is provided with a first ventilation opening (303).

3. The switching power supply housing spraying device according to claim 2, characterized in that: A second ventilation opening (305) is provided between the irregularly shaped turbulence support plate (3) and the I-shaped air guide plate (304), and a third ventilation opening (306) is provided between the I-shaped air guide plate (304) and the vertical inner wall of the drying box (2). An air outlet guide bucket (307) is connected to the bottom of the drying box (2).

4. The switching power supply housing spraying device according to claim 1, characterized in that: The drying box (2) is provided with air inlets (201) on both sides for air to enter, and a fan (202) is installed inside each of the two air inlets (201).

5. The switching power supply housing spraying device according to claim 1, characterized in that: The air drying box (2) has four filter plate racks (203) slidably installed on its vertical inner wall. The four filter plate racks (203) are equipped with filter plates (204) for adsorbing air impurities. The top of the irregular turbulence support plate (3) is provided with an inclined air inlet slot (205).

6. The switching power supply housing spraying device according to claim 1, characterized in that: Another vertical bracket (104) is equipped with a sprayer (105) for spraying the casing of the switching power supply. The end of the sprayer (105) is equipped with a nozzle (106). An air tank (107) is installed inside the support frame (1). The air tank (107) is connected to the air inlet of the sprayer (105) through a connecting pipe. Four casters (101) for movement are installed at the bottom of the support frame (1).

7. The switching power supply housing spraying device according to claim 1, characterized in that: The side of the conveying part (103) is equipped with a limiting plate (108) for restricting the movement of the switching power supply housing.

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