A vibration-assisted uniform impregnation structure for vacuum impregnation of an inductive composite soft magnetic core

Abstract

The utility model belongs to the technical field of inductance element manufacturing, especially relates to a vibration auxiliary even impregnation structure for vacuum combined impregnation of inductance composite soft magnetic core, including box, box door, support frame and vacuum pump, the box door is hinged in the front of box, the inside of box is provided with impregnating varnish device, impregnating varnish device includes vibration mechanism, clamping mechanism and rotating mechanism, vibration mechanism sets up in the inside of box, clamping mechanism sets up in the inside upper end of box, rotating mechanism sets up in the inside upper end of box. The vibration auxiliary even impregnation structure for vacuum combined impregnation of inductance composite soft magnetic core, through setting up vibration mechanism, starting motor one drives output shaft and connecting rod one rotation, when connecting rod one rotation drives connecting rod two and draws impregnating varnish box along slide rail left and right reciprocation through push rod, thereby makes the inside insulation paint of impregnating varnish box vibrate unceasingly, makes the paint liquid fast filling to inductance composite soft magnetic core tiny gap, makes inductance composite soft magnetic core impregnating varnish more evenly.

Description

Technical Field

[0001] This utility model relates to the field of inductor manufacturing technology, specifically to a vibration-assisted uniform impregnation structure for vacuum impregnation of composite soft magnetic cores for inductors. Background Technology

[0002] Inductor composite soft magnetic cores (such as iron-silicon-aluminum and ferrite composite cores) are core components of power electronic equipment. Their vacuum impregnation process (immersing the soft magnetic core in insulating varnish in a vacuum environment) is a key process to improve insulation performance and reduce losses.

[0003] However, insulating varnish produces a strong, pungent odor that diffuses when the impregnation tank is opened after impregnation. Therefore, in actual production, the impregnation equipment needs to be set up in a separate factory to prevent the odor from spreading. Production personnel also need to wear protective equipment to prevent health hazards from working under the pungent odor of insulating varnish for a long time, making operation very inconvenient.

[0004] As disclosed in CN222720229U, a vacuum impregnation machine is used by placing the workpiece to be impregnated in the impregnation tank, activating the vacuum pump to create a vacuum environment inside the tank, and then using a gas collection hood to prevent the irritating odor of the insulating varnish from escaping. The gas is then exhausted through the exhaust system. By covering the impregnation tank with the gas collection hood, no irritating odor is emitted during or after the impregnation process. Therefore, there is no need to set up a separate area for the impregnation equipment, reducing space occupation. In addition, it also ensures the safety of the operators, who can operate the machine without wearing protective equipment, making it convenient to use.

[0005] However, during use, the soft magnetic core of the device has multiple air gaps and winding gaps. The insulating varnish is difficult to fill the tiny gaps quickly by negative pressure alone, resulting in insufficient local impregnation.

[0006] Therefore, we urgently need to provide a vibration-assisted uniform impregnation structure for vacuum impregnation of inductor composite soft magnetic cores. Utility Model Content

[0007] The purpose of this invention is to provide a vibration-assisted uniform impregnation structure for vacuum impregnation of inductor composite soft magnetic cores, in order to solve the problem mentioned in the background art that during use, there are multiple air gaps and winding gaps inside the soft magnetic core, and the insulating varnish is difficult to quickly fill to the tiny gaps by negative pressure alone, resulting in local insufficient impregnation.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a vibration-assisted uniform impregnation structure for vacuum impregnation of inductor composite soft magnetic cores, comprising a housing, a door, a support frame, and a vacuum pump. The door is hinged to the front of the housing, the support frame is fixedly installed at the bottom of the housing, the vacuum pump is installed on the top left side of the housing, and an impregnation device is provided inside the housing. The impregnation device includes a vibration mechanism, a clamping mechanism, and a rotation mechanism.

[0009] The vibration mechanism is located inside the housing, the clamping mechanism is located at the upper part of the housing, and the rotation mechanism is located at the upper part of the housing.

[0010] The vibration mechanism includes a slide rail, a paint impregnation tank, a mounting bracket, a motor, an output shaft, a connecting rod, a connecting rod, and a push rod. The slide rail is fixedly installed on the front and rear sides of the bottom of the tank. The lower end of the paint impregnation tank is slidably connected to the outside of the slide rail. The mounting bracket is fixedly installed on the back right side of the tank. The motor is fixedly installed inside the mounting bracket. The output shaft is fixedly installed at the output end of the motor. One end of the connecting rod is fixedly installed on the outside of the output shaft. The connecting rod is rotatably connected to the other end of the connecting rod. One end of the push rod is fixedly installed on the right side of the paint impregnation tank, and the other end is rotatably connected to the connecting rod.

[0011] Preferably, the bottom of the impregnation tank is provided with a groove, and the groove is slidably connected to the outer wall of the slide rail. When impregnating the inductor composite soft magnetic core, the motor is started to drive the output shaft and the connecting rod to rotate. When the connecting rod rotates, it drives the connecting rod to pull the impregnation tank to move back and forth along the slide rail through the push rod. This causes the insulating varnish inside the impregnation tank to vibrate continuously, so that the varnish quickly fills the tiny gaps and avoids impregnation dead corners.

[0012] Preferably, an observation window is installed on the front of the cabinet door, and the observation window is made of transparent glass, so that the coating of the inductor composite soft magnetic core can be easily observed through the observation window.

[0013] Preferably, the clamping mechanism includes a first telescopic component, a mounting plate, a guide rod, a connecting shaft, a bracket, a second telescopic component, and a clamping plate. The first telescopic component is fixedly installed on the top of the housing, the mounting plate is fixedly installed on the bottom of the first telescopic component, the guide rod is fixedly installed on the left and right ends of the top of the mounting plate, the connecting shaft is rotatably connected to the bottom of the mounting plate, the bracket is fixedly installed on the bottom of the connecting shaft, the second telescopic component is fixedly installed on the left and right sides of the bracket, and the clamping plate is fixedly installed on the output end of the second telescopic component.

[0014] Preferably, a rubber pad is installed on one side of the two adjacent clamping plates. After the clamping plates are pushed to clamp the inductor composite soft magnetic core by activating the second telescopic component, the inductor composite soft magnetic core is pushed down by activating the first telescopic component to be immersed in the insulating varnish in the impregnation box, thereby achieving impregnation.

[0015] Preferably, the rotating mechanism includes a second motor, a rotating shaft, pulleys, and a belt. The second motor is fixedly installed on the top right side of the mounting plate, the rotating shaft is fixedly installed at the output end of the second motor, the pulleys are fixedly installed on the outside of the connecting shaft and the rotating shaft, and the belt is sleeved on the outside of the two pulleys.

[0016] Preferably, the guide rod extends through the upper end of the housing. When the rotating shaft drives the bracket to rotate, the guide rod protects the telescopic component one, preventing it from being subjected to excessive torque and causing damage.

[0017] Compared with the prior art, the beneficial effects of this utility model are: 1. This vibration-assisted uniform impregnation structure for vacuum impregnation of inductor composite soft magnetic cores uses a vibration mechanism. When motor one is started, it drives the output shaft and connecting rod one to rotate. When connecting rod one rotates, it drives connecting rod two to pull the impregnation tank back and forth along the slide rail via the push rod. This causes the insulating varnish inside the impregnation tank to vibrate continuously, allowing the varnish to quickly fill the tiny gaps in the inductor composite soft magnetic core, making the impregnation of the inductor composite soft magnetic core more uniform.

[0018] 2. The vibration-assisted uniform impregnation structure for vacuum impregnation of inductor composite soft magnetic cores, by setting a rotating mechanism, starts the second motor to drive the rotating shaft to rotate, and drives the connecting shaft and bracket to rotate under the transmission of pulleys and belts, thereby causing the inductor composite soft magnetic core to rotate, causing the insulating varnish in the impregnation tank to move relative to each other, flushing the pores of the inductor composite soft magnetic core, making it easier for the insulating varnish to enter the pores, thus making the impregnation of the inductor composite soft magnetic core more uniform. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the internal structure of the box of this utility model; Figure 3 This is a schematic diagram of the vibration mechanism structure of this utility model; Figure 4 This is a schematic diagram of the clamping mechanism structure of this utility model; Figure 5 This is a schematic diagram of the rotating mechanism structure of this utility model.

[0020] In the diagram: 1. Box body; 2. Box door; 3. Support frame; 4. Vacuum pump; 501. Slide rail; 502. Impregnation box; 503. Mounting frame; 504. Motor 1; 505. Output shaft; 506. Connecting rod 1; 507. Connecting rod 2; 508. Push rod; 601. Telescopic component 1; 602. Mounting plate; 603. Guide rod; 604. Connecting shaft; 605. Bracket; 606. Telescopic component 2; 607. Clamping plate; 701. Motor 2; 702. Rotating shaft; 703. Pulley; 704. Belt. Detailed Implementation

[0021] 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. Example

[0022] Due to the existence of multiple air gaps and winding gaps within the soft magnetic core during use, the insulating varnish cannot quickly fill these tiny gaps using only negative pressure, leading to localized insufficient impregnation. Please refer to [link / reference needed]. Figures 1-5 This embodiment provides a vibration-assisted uniform impregnation structure for vacuum impregnation of inductor composite soft magnetic cores. This structure continuously vibrates the insulating varnish inside the impregnation tank, rapidly filling the tiny gaps in the inductor composite soft magnetic core and resulting in more uniform impregnation. The vibration-assisted uniform impregnation structure includes a housing 1, a door 2, a support frame 3, and a vacuum pump 4. The door 2 is hinged to the front of the housing 1 and has an observation window made of transparent glass, allowing for easy observation of the impregnation process. The support frame 3 is fixedly installed at the bottom of the housing 1, and the vacuum pump 4 is installed on the top left side of the housing 1. An impregnation device is installed inside the housing 1, comprising a vibration mechanism, a clamping mechanism, and a rotation mechanism.

[0023] The vibration mechanism is located inside the housing 1, the clamping mechanism is located at the upper part of the housing 1, and the rotation mechanism is located at the upper part of the housing 1.

[0024] The vibration mechanism includes a slide rail 501, an impregnation tank 502, a mounting bracket 503, a motor 504, an output shaft 505, a connecting rod 506, a connecting rod 507, and a push rod 508. The slide rail 501 is fixedly installed on the front and rear sides of the bottom inside the housing 1. The lower end of the impregnation tank 502 is slidably connected to the outside of the slide rail 501. A groove is provided at the bottom of the impregnation tank 502, and the groove is slidably connected to the outer wall of the slide rail 501. When impregnating the inductor composite soft magnetic core, the output shaft 505 and the connecting rod 506 are rotated by starting the motor 504. When the connecting rod 506 rotates, it drives the connecting rod 507 to pull the impregnation tank 502 along the push rod 508. The slide rail 501 moves back and forth, causing the insulating varnish inside the impregnation tank 502 to vibrate continuously, allowing the varnish to quickly fill the tiny gaps and avoid impregnation dead zones. The mounting bracket 503 is fixedly installed on the right side of the box 1. Motor 1 504 is fixedly installed inside the mounting bracket 503. The model of motor 1 504 is HC-LMF. The output shaft 505 is fixedly installed on the output end of motor 1 504. One end of connecting rod 1 506 is fixedly installed on the outside of the output shaft 505. Connecting rod 2 507 is rotatably connected to the other end of connecting rod 1 506. One end of push rod 508 is fixedly installed on the right side of the impregnation tank 502, and the other end is rotatably connected to connecting rod 2 507.

[0025] To facilitate the placement of the inductor composite soft magnetic core into the impregnation tank 502, this device also includes a clamping mechanism. The clamping mechanism comprises a telescopic component 601, a mounting plate 602, a guide rod 603, a connecting shaft 604, a bracket 605, a second telescopic component 606, and a clamping plate 607. The first telescopic component 601 is fixedly installed on the top of the housing 1. The first telescopic component 601 is a hydraulic cylinder, model M-HC-A-140. The mounting plate 602 is fixedly installed on the bottom of the first telescopic component 601. The guide rod 603 is fixedly installed on the top left and right ends of the mounting plate 602, penetrating the upper end of the housing 1. When the rotating shaft 702 drives the bracket 605 to rotate, the guide rod 603 clamps the first telescopic component 601. 1. To protect the telescopic component 601 from excessive torque and damage, the connecting shaft 604 is rotatably connected to the bottom of the mounting plate 602, the bracket 605 is fixedly installed at the bottom of the connecting shaft 604, and the telescopic component 606 is fixedly installed on the left and right sides of the bracket 605. The telescopic component 606 is an electric push rod, model LAP22. The clamping plate 607 is fixedly installed at the output end of the telescopic component 606. The two clamping plates 607 are fitted with rubber pads on their adjacent sides. After the telescopic component 606 is activated to push the clamping plate 607 to clamp the inductor composite soft magnetic core, the telescopic component 601 is activated to push the inductor composite soft magnetic core downward to immerse it in the insulating varnish in the impregnation tank 502, thus achieving impregnation. Example

[0026] Based on Example 1, please refer to Figures 1-5To induce movement of the insulating varnish around the inductor composite soft magnetic core, thereby flushing the pores of the inductor composite soft magnetic core and improving the impregnation quality, this device also includes a rotating mechanism. The rotating mechanism comprises a second motor 701, a rotating shaft 702, a pulley 703, and a belt 704. The second motor 701 is fixedly mounted on the top right side of the mounting plate 602. The model of the second motor 701 is 28BYJ48. The rotating shaft 702 is fixedly mounted on the output end of the second motor 701. The pulley 703 is fixedly mounted on... On the outside of the connecting shaft 604 and the rotating shaft 702, the belt 704 is sleeved on the outside of the two pulleys 703. The starting motor 701 drives the rotating shaft 702 to rotate, and under the transmission of the pulleys 703 and the belt 704, the connecting shaft 604 and the bracket 605 are driven to rotate, thereby causing the inductor composite soft magnetic core to rotate. This causes the insulating varnish in the impregnation box 502 to move relative to each other, flushing the pores of the inductor composite soft magnetic core, making it easier for the insulating varnish to enter the pores, thus making the impregnation of the inductor composite soft magnetic core more uniform.

[0027] In use, open the box door 2 and place the inductor composite soft magnetic core to be impregnated between the two clamping plates 607. Then, activate the telescopic component 2 606 to push the clamping plates 607 to clamp the inductor composite soft magnetic core. Then close the box door 2 and turn on the vacuum pump 4 to extract the air from the inside of the box 1 to create a vacuum environment. Then, activate the telescopic component 1 601 to push the mounting plate 602, which in turn moves the bracket 605 and the inductor composite soft magnetic core downwards until the inductor composite soft magnetic core is completely immersed in the insulating varnish in the impregnation box 502. Then, start the motor 1 504 to drive the output shaft 505 and the connecting rod 1 506 to rotate. When the connecting rod 1 506 rotates, it drives the connecting rod 2 507 through the push rod. 508 pulls the impregnation tank 502 to move back and forth along the slide rail 501, causing the insulating varnish inside the impregnation tank 502 to vibrate continuously, so that the varnish quickly fills the tiny gaps in the inductor composite soft magnetic core, making the impregnation of the inductor composite soft magnetic core more uniform. At the same time, the motor 701 can be started to drive the rotating shaft 702 to rotate. Under the transmission of the pulley 703 and the belt 704, the connecting shaft 604 and the bracket 605 are driven to rotate, which in turn causes the inductor composite soft magnetic core to rotate. This causes the insulating varnish in the impregnation tank 502 to move relative to each other, flushing the pores of the inductor composite soft magnetic core, making it easier for the insulating varnish to enter the pores, thus making the impregnation of the inductor composite soft magnetic core more uniform.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

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