Vacuum impregnation baking equipment

Abstract

The present application relates to the technical field of magnetic element manufacturing, and specifically relates to a vacuum impregnation baking equipment, which comprises a rack, a sealed box is installed on the rack, a sealed box cover is rotatably connected to the sealed box, an impregnation basin is installed in the sealed box, and a baking assembly is connected to the impregnation basin; a liquid storage tank and a vacuum pump are also installed on the rack, the liquid storage tank stores glue liquid, a liquid path connecting assembly is connected between the bottom of the liquid storage tank and the bottom of the impregnation basin, an air path connecting assembly is connected between the vacuum pump and the sealed box cover and the liquid storage tank, and a second air inlet assembly is sealingly installed on the liquid storage tank; a temperature sensor, a pressure sensor, a sight glass assembly, a first air inlet assembly and a nitrogen input assembly are sealingly installed on the sealed box cover. The present application realizes the whole process from impregnation to solidification of the workpiece in a single equipment, and effectively solves the problems of process dispersion, low efficiency and poor quality consistency of the traditional split type equipment.

Description

Technical Field

[0001] This invention relates to the field of magnetic component manufacturing technology, and more specifically to a vacuum impregnation and baking equipment. Background Technology

[0002] In the manufacturing of magnetic components such as inductors and transformer cores, impregnation and curing are critical insulation processes. Existing technologies typically employ a combination of separate equipment and manual operation. First, the magnetic core is impregnated in an open impregnation machine, and then operators move the workpiece to a separate tunnel oven for baking and curing.

[0003] In the traditional model, impregnation and baking need to be completed at two separate workstations, relying on manual handling and turnover, resulting in long production cycles and low automation. Moreover, the open impregnation process leads to a large amount of solvent evaporation, requiring changes in the adhesive ratio and frequent replacement and cleaning of the adhesive, increasing material costs and waste disposal burden. Manual operation makes it difficult to accurately control the impregnation time, vacuum degree, and baking temperature profile, and the handling process is prone to causing magnetic core collisions, generating debris or displacement, affecting the uniformity of impregnation and the final curing quality.

[0004] Therefore, how to achieve efficient integration of the impregnation and baking processes, while improving production efficiency and ensuring the consistency and stability of product quality, is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, this application provides a vacuum impregnation and baking device. Its purpose is to integrate vacuum impregnation, inert gas protection, and baking / curing functions into one unit, thereby solving the problems of low efficiency and uneven quality inherent in traditional dispersion processes.

[0006] The vacuum impregnation and baking equipment provided in this application adopts the following technical solution: A vacuum impregnation and baking apparatus includes a frame, a sealed box mounted on the frame, a sealed box cover rotatably connected to the sealed box, and a sealed box cover drive assembly installed between the sealed box and the sealed box cover; an impregnation basin and a material tray rack extending into the impregnation basin are fixedly mounted inside the sealed box, and a material tray is detachably mounted on the material tray rack; a baking assembly is thermally connected to the impregnation basin; a liquid storage tank and a vacuum pump are also mounted on the frame, the liquid storage tank storing adhesive liquid; a liquid circuit connection assembly is sealingly connected between the bottom of the liquid storage tank and the bottom of the impregnation basin, and a gas circuit connection assembly is sealingly connected between the vacuum pump, the sealed box cover, and the liquid storage tank; a second air inlet assembly is sealingly mounted on the liquid storage tank; a temperature sensor, a pressure sensor, a sight glass assembly, a first air inlet assembly, and a nitrogen input assembly are sealingly mounted on the sealed box cover.

[0007] By adopting the above technical solution, and utilizing a sealed box, impregnation basin, vacuum pump, liquid storage tank, and various connecting components and sensors, an automated device integrating vacuum impregnation, adhesive recovery, atmosphere protection, and baking curing functions was constructed. This integrated design enables the workpiece to complete the entire process from impregnation to curing within a single device, effectively solving the problems of discrete processes, low efficiency, and poor quality consistency in traditional split-type equipment.

[0008] Furthermore, the sealing box cover driving assembly includes a first telescopic member, the fixed end of the first telescopic member is hinged to the frame, and the telescopic end of the first telescopic member is hinged to the sealing box cover; a protective cover is fixedly installed on the telescopic end of the first telescopic member and covers the outside of the first telescopic member.

[0009] By adopting the above technical solution, and utilizing the linear drive of the first telescopic component and the hinged connection at both ends, the linear motion can be smoothly converted into the rotational opening and closing motion of the sealing cover, realizing the automatic and reliable opening and closing of the cover. The protective cover can effectively isolate corrosive gases and dust, protect the drive components, and extend their service life.

[0010] Furthermore, the baking assembly includes a heating plate, which is fixedly installed at the bottom of the impregnation basin. Heating plates are fixedly installed on the outer side of the impregnation basin. The heating plate and the heating plates are thermally connected to the impregnation basin. The impregnation basin is made of a thermally conductive material.

[0011] By adopting the above technical solution, a multi-directional, enclosed direct heating system is formed by using heating plates and heating disks fixed to the bottom and outer sides of the impregnation basin and directly connected to the highly thermally conductive impregnation basin. This design enables rapid and uniform heating of the impregnation basin, thereby providing a stable and efficient heat source for the workpiece inside and ensuring the uniformity of the adhesive curing quality.

[0012] Furthermore, the liquid circuit connection assembly includes a guide pipe, one end of which is fixedly and sealed to the bottom of the impregnation basin, and the other end of which is fixedly and sealed to the bottom of the liquid storage tank. A first solenoid valve is fixedly installed on the guide pipe.

[0013] By adopting the above technical solution, a guide pipe connects the dipping basin and the storage tank, and the on / off state is controlled by a first solenoid valve. Combined with the vacuum pressure difference, automatic injection and recycling of the adhesive between the storage tank and the dipping basin are achieved. This avoids manual handling of the adhesive, ensures the airtightness of the adhesive recycling, and reduces evaporation loss and pollution.

[0014] Furthermore, the gas connection assembly includes a three-way pipe, with a first gas guide pipe, a second gas guide pipe, and a third gas guide pipe fixedly and sealed at the three ports of the three-way pipe, respectively. The first gas guide pipe is fixedly and sealed to the vacuum pump, the second gas guide pipe is fixedly and sealed to the sealing box cover, and the third gas guide pipe is fixedly and sealed to the top of the liquid storage tank. A second solenoid valve is fixedly installed on the second gas guide pipe, and a third solenoid valve is fixedly installed on the third gas guide pipe.

[0015] By adopting the above technical solution, and utilizing a three-way pipe, a first air guide pipe, a second air guide pipe, a third air guide pipe, and matching second and third solenoid valves, a switching gas path is constructed that allows a vacuum pump to evacuate either the sealing box or the liquid storage tank. This enables the equipment to flexibly provide the necessary vacuum power for impregnation and discharging of adhesive, and is the core of pressure control.

[0016] Furthermore, a first filter is fixedly installed on the inner side of the sealed box cover corresponding to the second air guide pipe, and a second filter is fixedly installed on the inner side of the liquid storage tank corresponding to the third air guide pipe.

[0017] By adopting the above technical solution, using the first and second filters installed at the inlet ends of the second and third air guide pipes respectively, the adhesive particles or dust that may be carried out during the air extraction process can be effectively intercepted, preventing them from entering and contaminating the vacuum pump, and ensuring the long-term stable operation of the vacuum system.

[0018] Furthermore, the sight glass assembly includes a searchlight and a transparent glass. A first mounting opening is centrally located on the top of the sealed box cover, and the searchlight is fixedly and sealed in the first mounting opening. A second mounting opening is located on the obliquely arranged side of the sealed box cover, and the transparent glass is fixedly and sealed in the second mounting opening.

[0019] By adopting the above technical solution, and utilizing a searchlight sealed on the lid and high-temperature resistant transparent glass, internal lighting and an observation window are provided during equipment operation. Operators can observe the impregnation liquid level, workpiece status, and baking process in real time without opening the lid, achieving visualized monitoring of the process. This helps to promptly detect abnormalities and ensure product quality.

[0020] Furthermore, the first air intake assembly includes a first air intake solenoid valve, which is fixedly installed on the top of the sealed box cover, and a first air filter is fixedly and sealed at the air intake end of the first air intake solenoid valve; the second air intake assembly includes a second air intake solenoid valve, which is fixedly installed on the top of the liquid storage tank, and a second air filter is fixedly and sealed at the air intake end of the second air intake solenoid valve.

[0021] By adopting the above technical solution, and utilizing a first and a second air intake solenoid valve each equipped with an air filter, the pressure of the sealing box and the storage tank can be controlled and adjusted. The first air intake assembly is used to slowly introduce clean air into the sealing box after the process is completed, so as to safely break the vacuum; the second air intake assembly replenishes air into the storage tank when the adhesive is output, balances its internal pressure, ensures smooth adhesive delivery, and prevents the storage tank from being sucked down by negative pressure.

[0022] Furthermore, the nitrogen input assembly includes a nitrogen input pipe, which is fixedly and sealed on the sealing box cover. The nitrogen input pipe is connected to a gas storage tank, which is filled with nitrogen. A fourth solenoid valve is fixedly installed on the nitrogen input pipe.

[0023] By adopting the above technical solution, high-purity nitrogen can be quantitatively injected into the sealed chamber using the nitrogen input pipe connected to the gas storage tank and the fourth solenoid valve. This replaces the air inside the chamber before baking, forming an inert protective atmosphere, effectively preventing oxidation of the adhesive during high-temperature curing, thereby improving the final insulation performance and reliability of the product.

[0024] Furthermore, it also includes a PLC control system, which is electrically connected to the temperature sensor, the vacuum pump, the pressure sensor, the sealing box cover drive assembly, the baking assembly, the liquid connection assembly, the gas connection assembly, the sight glass assembly, the first air intake assembly, the second air intake assembly, and the nitrogen input assembly.

[0025] By adopting the above technical solution, and utilizing a PLC control system electrically connected to temperature sensors, pressure sensors, vacuum pumps, all solenoid valves, and heating elements, the sequence, time, temperature, and vacuum level of processes such as cap closing, vacuuming, glue injection, pressure holding, glue discharge, nitrogen filling, baking, vacuum breaking, and cap opening can be automatically coordinated and precisely controlled according to a preset program. This replaces cumbersome manual operations, achieving one-click automation and intelligent operation of the entire process, ensuring a high degree of consistency and repeatability of process parameters.

[0026] Beneficial effects achieved: This application integrates multiple processes such as dipping and baking into one, achieving full-process automation, significantly shortening the production cycle, and reducing manual intervention and handling.

[0027] This application ensures full penetration of the adhesive through vacuum impregnation; baking in a slightly negative pressure nitrogen environment effectively prevents oxidation; and intelligent and precise temperature and pressure control guarantees high consistency between batches.

[0028] This application achieves adhesive recycling through a closed system, reducing waste and volatile pollution; automated operation and interlocking control reduce the risk of personnel exposure to high temperatures, chemicals, and misoperation. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of one embodiment of this application.

[0030] Figure 2 This is a structural exploded view of one embodiment of this application.

[0031] Figure 3 This is a schematic diagram of the internal structure of one embodiment of this application.

[0032] Figure 4 This is a schematic diagram of the installation structure of the sealing box cover drive assembly in one embodiment of this application.

[0033] Figure 5 This is a schematic diagram of the installation structure of the baking component in one embodiment of this application.

[0034] Figure 6 This is a schematic diagram of the installation structure of the liquid circuit connection assembly in one embodiment of this application.

[0035] Figure 7 This is a schematic diagram of the installation structure of the gas connection assembly in one embodiment of this application.

[0036] Figure 8 This is a schematic diagram of the installation structure of the nitrogen input component in one embodiment of this application.

[0037] Explanation of reference numerals in the attached drawings: 100, frame; 101, sealing box; 102, sealing box cover; 103, impregnation basin; 104, material tray rack; 105, material tray; 106, temperature sensor; 107, liquid storage tank; 108, vacuum pump; 109, pressure sensor; 200, sealing box cover drive assembly; 201, first telescopic component; 202, protective cover; 203, first hinge seat; 204, first fixed seat; 205, second hinge seat; 206, second fixed seat; 300, baking assembly; 301, heating plate; 302, heating plate; 400, liquid connection assembly; 401, guide pipe; 402, first solenoid valve; 500, gas connection assembly; 501 502. First air guide pipe; 503. Second air guide pipe; 504. Third air guide pipe; 505. Second solenoid valve; 506. Third solenoid valve; 507. First filter; 508. Second filter; 600. Sight glass assembly; 601. Searchlight; 602. Transparent glass; 603. First mounting port; 604. Second mounting port; 700. First air intake assembly; 701. First air intake solenoid valve; 702. First air filter; 800. Second air intake assembly; 801. Second air intake solenoid valve; 802. Second air filter; 900. Nitrogen input assembly; 901. Nitrogen input pipe; 902. Gas tank; 903. Fourth solenoid valve. Detailed Implementation

[0038] The following combination Figures 1-8 This application will be described in further detail.

[0039] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] This application discloses a vacuum impregnation and baking device.

[0042] Please refer to the above as well. Figures 1 to 8 In one embodiment of this application, a vacuum impregnation and baking apparatus includes a frame 100. A sealed box 101 is fixedly mounted on the top of the frame 100. A sealed box cover 102 is rotatably connected to the top opening of the sealed box 101. A sealed box cover drive assembly 200 is installed between the sealed box 101 and the sealed box cover 102. An impregnation basin 103 is fixedly mounted inside the sealed box 101. A material tray rack 104 extending into the impregnation basin 103 is fixedly mounted above the impregnation basin 103 inside the sealed box 101. A material tray 105 for placing workpieces is detachably mounted on the material tray rack 104. A baking assembly 300 is thermally connected to the outside of the impregnation basin 103. A temperature sensor 106 facing the inside of the sealed box 101 is fixedly mounted on the sealed box cover 102. A liquid storage tank 107 and a vacuum pump 108 are fixedly installed on the frame 100 below the sealed box 101. The liquid storage tank 107 stores adhesive for impregnating the workpiece, and the vacuum pump 108 is used to generate a vacuum. A pressure sensor 109 is fixedly and sealed on the sealed box cover 102. A liquid connection assembly 400 is sealed to the bottom of the liquid storage tank 107 and the bottom of the impregnation basin 103. A gas connection assembly 500 is sealed between the vacuum pump 108 and the sealed box cover 102 and the liquid storage tank 107. A sight glass assembly 600 is sealed on the sealed box cover 102. A first air inlet assembly 700 is sealed on the sealed box cover 102. A second air inlet assembly 800 is sealed on the liquid storage tank 107. A nitrogen input assembly 900 is sealed on the sealed box cover 102.

[0043] Before the impregnation operation, the sealing box cover drive assembly 200 is controlled to open the sealing box cover 102, and the material tray 105 with the pre-placed workpiece is loaded onto the material tray rack 104. Then, the sealing box cover drive assembly 200 is controlled to close the sealing box cover 102, ensuring that the sealing box 101 forms a sealed cavity. Next, the vacuum pump 108 is started, and the air circuit connection assembly 500 connects the vacuum pump 108 to the sealing box cover 102. The vacuum pump 108 then extracts air from the sealing box 101, creating a vacuum environment. The pressure sensor 109 monitors the vacuum level in the sealing box 101 in real time, and the vacuum pump 108 is started and stopped according to the vacuum level to maintain a stable vacuum. During the vacuuming process, the liquid circuit connection assembly 400 connects the liquid storage tank 107 to the impregnation basin 103, and the second air inlet assembly 800 is opened. This draws the adhesive from the liquid storage tank 107 into the impregnation basin 103, completely immersing the workpiece in the adhesive, thus completing the impregnation operation.

[0044] After the impregnation process is completed, the vacuum pump 108 is started first, and the air connection assembly 500 is controlled to connect the vacuum pump 108 to the liquid storage tank 107. The vacuum pump 108 will then extract the air from the liquid storage tank 107. Next, the liquid connection assembly 400 is controlled to connect the liquid storage tank 107 to the impregnation basin 103, thus drawing the adhesive from the impregnation basin 103 back into the liquid storage tank 107. Nitrogen gas is then injected through the nitrogen input assembly 900, and the baking assembly 300 is controlled to heat the impregnation basin 103 to achieve the baking process.

[0045] During the baking process, the vacuum pump 108 is started, and the gas connection assembly 500 connects the vacuum pump 108 to the sealed box cover 102. The vacuum pump 108 then extracts some nitrogen gas from the sealed box 101, creating a micro-negative pressure environment. Baking under this nitrogen-filled micro-negative pressure environment prevents the adhesive from oxidizing at high temperatures while also helping to expel volatile gases, resulting in a stable and defect-free cured adhesive layer. Nitrogen, as an inert atmosphere, isolates oxygen and is the core of oxidation prevention; the micro-negative pressure facilitates the orderly discharge of volatile components such as diluents in the adhesive, avoiding internal defects such as bubbles and pinholes.

[0046] After the baking process is completed, the first air intake component 700 is opened to disrupt the slight negative pressure environment inside the sealed chamber 101. Then, the sealed chamber cover 102 is opened by the sealed chamber cover drive component 200, and the tray 105 containing the workpiece on the tray rack 104 can be removed.

[0047] During operation, the temperature sensor 106 monitors the internal temperature of the sealed chamber 101 in real time. The output temperature of the baking assembly 300 can be adjusted in real time based on the temperature monitored by the temperature sensor 106. The sight glass assembly 600 allows for full observation of the internal state, enabling controllable impregnation and baking processes. The first air intake assembly 700 is used to introduce clean air into the sealed chamber 101 after the baking operation is completed, so as to quickly and controllably break the vacuum and restore the pressure inside the chamber to normal pressure, facilitating the safe opening of the sealed chamber cover 102. The second air intake assembly 800 is used to replenish gas into the liquid storage tank 107 when the adhesive is drawn from the liquid storage tank 107 to the impregnation basin 103 through the liquid connection assembly 400, so as to balance its internal pressure, ensure that the adhesive can flow smoothly and completely, and avoid incomplete extraction of adhesive or pipe flattening due to negative pressure formed in the liquid storage tank 107. The nitrogen input assembly 900 is used to input nitrogen into the sealed chamber 101 to create an inert atmosphere to protect the environment and prevent the adhesive from oxidizing and deteriorating at high temperatures.

[0048] Please refer to the above as well. Figures 1 to 8In one specific embodiment of this application, the sealing box cover drive assembly 200 includes a first telescopic member 201, the fixed end of the first telescopic member 201 is hinged to the frame 100, and the telescopic end of the first telescopic member 201 is hinged to the sealing box cover 102; a protective cover 202 covering the outside of the first telescopic member 201 is fixedly installed on the telescopic end of the first telescopic member 201.

[0049] During operation, when the sealing box cover 102 needs to be opened or closed, the telescopic end of the first telescopic member 201 is extended or retracted by driving it. Since the fixed end of the first telescopic member 201 is hinged to the frame 100 and the telescopic end is hinged to the sealing box cover 102, this structure converts the linear motion of the telescopic member into the rotational motion of the sealing box cover 102 around the pivot connecting it to the sealing box 101, thereby achieving smooth opening and tight closing of the sealing box cover 102. Throughout the entire operation, the protective cover 202, which is fixedly installed outside the telescopic end, moves accordingly, always completely covering the telescopic rod of the first telescopic member 201.

[0050] This application utilizes the first telescopic component 201 as a standard linear drive element, providing stable and sufficient thrust and pull to ensure that the heavy sealing cover 102 can be reliably opened and closed, and that the cover is tightly sealed. The hinged connection at both ends can adapt to changes in angle during the cover's rotation, preventing structural jamming. The protective cover 202 isolates corrosive gases, adhesive vapors, or dust that may evaporate from the impregnation area, preventing them from adhering to the moving parts of the first telescopic component 201. This significantly reduces the risk of the drive mechanism malfunctioning or jamming due to corrosion or contamination, extends the service life of the core moving parts of the equipment, and ensures the continuity and stability of production.

[0051] Please refer to the above as well. Figures 1 to 8 In one specific embodiment of this application, the fixed end of the first telescopic member 201 is hinged to a first hinge seat 203, the first hinge seat 203 is fixedly mounted on a first fixed seat 204, and the first fixed seat 204 is fixedly mounted on the frame 100; the telescopic end of the first telescopic member 201 is hinged to a second hinge seat 205, the second hinge seat 205 is fixedly mounted on a second fixed seat 206, and the second fixed seat 206 is fixedly mounted on the sealing box cover 102.

[0052] During operation, the fixed end of the first telescopic component 201 is connected to the first fixed seat 204 via the first hinge seat 203, and the first fixed seat 204 is firmly installed on the frame 100, forming a stable hinge fulcrum for the drive end. The telescopic end of the first telescopic component 201 is connected to the second fixed seat 206 via the second hinge seat 205, and the second fixed seat 206 is firmly installed on the sealing cover 102. When the telescopic rod of the first telescopic component 201 moves linearly, the power is transmitted through the structure of these two sets of fixed seats and hinge seats, smoothly converting the linear thrust or pull into the rotational motion of the sealing cover 102 around its connecting shaft with the box body, thereby precisely controlling the opening angle and closing clamping of the cover.

[0053] Please refer to the above as well. Figures 1 to 8 In one specific embodiment of this application, the first telescopic member 201 is configured as an electric telescopic cylinder. During operation, the electric telescopic cylinder can achieve precise stroke and position control by electric drive, which helps to ensure that the sealing cover 102 can be repeatedly and accurately closed to the preset sealing position.

[0054] It is understood that in other embodiments of this application, the first telescopic member 201 may also be configured as a hydraulic cylinder, pneumatic cylinder or other device capable of providing linear motion.

[0055] Please refer to the above as well. Figures 1 to 8 In one specific embodiment of this application, the baking assembly 300 includes a heating plate 301, which is fixedly installed at the bottom of the impregnation basin 103. Heating plates 302 are fixedly installed on the outer side of the impregnation basin 103. The heating plate 301 and the heating plates 302 are thermally connected to the impregnation basin 103. The impregnation basin 103 is made of a thermally conductive material, such as stainless steel or aluminum alloy.

[0056] During operation, after the workpiece is impregnated with adhesive and the adhesive solution is drained back into the storage tank 107, the control baking assembly 300 is activated, energizing the heating plate 301 and heating plate 302 to generate heat. The heat generated by the heating plate 301 and heating plate 302 is rapidly transferred to the impregnation basin 103, made of thermally conductive material, through direct heat conduction, causing it to heat up uniformly. The heated impregnation basin 103 then acts as a heat source, radiating and conducting heat to the impregnated workpiece it holds, thus achieving the curing and baking of the adhesive solution.

[0057] Please refer to the above as well. Figures 1 to 8 In one specific embodiment of this application, the liquid connection assembly 400 includes a guide pipe 401, one end of which is fixedly and sealed to the bottom of the impregnation basin 103, and the other end of which is fixedly and sealed to the bottom of the liquid storage tank 107. A first solenoid valve 402 is fixedly installed on the guide pipe 401.

[0058] During operation, when adhesive needs to be injected into the impregnation basin 103, the first solenoid valve 402 is opened, and the vacuum pump 108 is simultaneously controlled to create a negative pressure by evacuating the inside of the sealed box 101. Under the pressure difference, the adhesive in the storage tank 107 is then transported to the impregnation basin 103 through the guide pipe 401 until the workpiece is submerged. When impregnation is complete and adhesive needs to be drained, the vacuum pump 108 is controlled to create a negative pressure by evacuating the storage tank 107. Under the negative pressure inside the storage tank 107, the first solenoid valve 402 remains open, and the adhesive in the impregnation basin 103 flows back to the storage tank 107 through the same guide pipe 401 for storage, achieving the recycling of the adhesive. The opening and closing of the first solenoid valve 402 precisely controls the opening and closing of the adhesive passage.

[0059] Please refer to the above as well. Figures 1 to 8 In one specific embodiment of this application, the gas connection assembly 500 includes a three-way pipe 501. The three ports of the three-way pipe 501 are respectively fixedly and sealed to a first gas guide pipe 502, a second gas guide pipe 503, and a third gas guide pipe 504. The first gas guide pipe 502 is fixedly and sealed to the vacuum pump 108, the second gas guide pipe 503 is fixedly and sealed to the sealing box cover 102, and the third gas guide pipe 504 is fixedly and sealed to the top of the liquid storage tank 107. A second solenoid valve 505 is fixedly installed on the second gas guide pipe 503, and a third solenoid valve 506 is fixedly installed on the third gas guide pipe 504.

[0060] During operation, the suction port of the vacuum pump 108 is connected via the first air guide pipe 502. When it is necessary to evacuate the sealing box 101, the second solenoid valve 505 is opened and the third solenoid valve 506 is closed, and the vacuum pump 108 draws air from the sealing box 101 through the second air guide pipe 503. When it is necessary to evacuate the liquid storage tank 107 to assist in adhesive removal, the third solenoid valve 506 is opened and the second solenoid valve 505 is closed, and the vacuum pump 108 then draws air from the liquid storage tank 107 through the third air guide pipe 504.

[0061] Please refer to the above as well. Figures 1 to 8 In one specific embodiment of this application, a first filter 507 is fixedly installed on the inner side of the sealed box cover 102 corresponding to the second air guide pipe 503, and a second filter 508 is fixedly installed on the inner side of the liquid storage tank 107 corresponding to the third air guide pipe 504.

[0062] During operation, the first filter 507 and the second filter 508 are respectively installed at the air inlet of the second air guide pipe 503 and the third air guide pipe 504 to filter out any adhesive particles or dust that may be carried during air extraction, preventing them from entering the vacuum pump 108 and causing contamination or damage.

[0063] Please refer to the above as well. Figures 1 to 8In one specific embodiment of this application, the sight glass assembly 600 includes a searchlight 601 and a transparent glass 602, wherein the transparent glass 602 is a high-temperature resistant and high-strength sight glass. A first mounting opening 603 is centrally located at the top of the sealed cover 102, in which the searchlight 601 is fixedly and sealed. A second mounting opening 604 is located on the obliquely oriented side of the sealed cover 102, in which the transparent glass 602 is fixedly and sealed.

[0064] During operation, the sight glass assembly 600 provides a non-contact observation window into the internal workings of the sealed chamber 101. The searchlight 601 is illuminated, providing lighting for the impregnation and baking process within the sealed, dark chamber. Operators can directly observe the workpiece immersion status, adhesive level, baking status, or any abnormalities through the transparent glass 602 without interrupting the process or opening the chamber lid. This enables visual monitoring of the process, helping to ensure process quality and promptly identify problems.

[0065] Please refer to the above as well. Figures 1 to 8 In one specific embodiment of this application, the first air intake assembly 700 includes a first air intake solenoid valve 701, which is fixedly installed on the top of the sealing box cover 102, and a first air filter 702 is fixedly and sealed at the air intake end of the first air intake solenoid valve 701.

[0066] During operation, when it is necessary to open the sealed box cover 102, the first air intake assembly 700 is used to safely break the vacuum inside the box. The first air intake solenoid valve 701 is opened, and after being purified by the first air filter 702, the outside air is slowly and controllably introduced into the sealed box 101, so that the internal pressure is steadily restored to atmospheric pressure, thereby enabling the sealed box cover 102 to be opened safely and effortlessly.

[0067] Please refer to the above as well. Figures 1 to 8 In one specific embodiment of this application, the second air intake assembly 800 includes a second air intake solenoid valve 801, which is fixedly installed on the top of the liquid storage tank 107, and a second air filter 802 is fixedly and sealed at the air intake end of the second air intake solenoid valve 801.

[0068] During operation, the second air intake assembly 800 is used to balance the internal pressure of the liquid storage tank 107. When the liquid connection assembly 400 is opened, and the adhesive needs to be pumped from the liquid storage tank 107 to the impregnation basin 103, a negative pressure will form inside the liquid storage tank 107 as the adhesive is discharged, hindering the smooth pumping of the adhesive and possibly even crushing the tank. At this time, the second air intake solenoid valve 801 is opened, and external air enters the liquid storage tank 107 after being filtered by the second air filter 802, balancing the internal and external atmospheric pressure to ensure that the adhesive can be smoothly and completely delivered.

[0069] Please refer to the above as well. Figures 1 to 8 In one specific embodiment of this application, the nitrogen input component 900 includes a nitrogen input pipe 901, which is fixedly and sealed on the sealing box cover 102. The nitrogen input pipe 901 is connected to a gas storage tank 902, which is filled with nitrogen. A fourth solenoid valve 903 is fixedly installed on the nitrogen input pipe 901.

[0070] During operation, the nitrogen inlet component 900 is used to inject inert nitrogen into the sealed chamber 101. When the fourth solenoid valve 903 is opened, the high-pressure nitrogen in the gas tank 902, after being depressurized, enters the sealed chamber 101 through the nitrogen inlet pipe 901, creating an oxygen-deficient inert atmosphere. This effectively prevents the adhesive from oxidizing and deteriorating due to contact with oxygen during subsequent baking and heating, thereby improving the product's curing quality and performance stability.

[0071] Please refer to the above as well. Figures 1 to 8 In one specific embodiment of this application, the vacuum impregnation and baking equipment further includes a PLC control system. The PLC control system is electrically connected to the temperature sensor 106, the vacuum pump 108, the pressure sensor 109, the first telescopic member 201 in the sealing box cover drive assembly 200, the heating plate 301 and heating plate 302 in the baking assembly 300, the first solenoid valve 402 in the liquid connection assembly 400, the second solenoid valve 505 and the third solenoid valve 506 in the gas connection assembly 500, the searchlight 601 in the sight glass assembly 600, the first air intake solenoid valve 701 in the first air intake assembly 700, the second air intake solenoid valve 801 in the second air intake assembly 800, and the fourth solenoid valve 903 in the nitrogen input assembly 900.

[0072] During operation, the PLC control system serves as the core of the entire automated equipment operation. It is electrically connected to the temperature sensor 106, pressure sensor 109, vacuum pump 108, first telescopic component 201, heating plate 301, heating element 302, first solenoid valve 402, second solenoid valve 505, third solenoid valve 506, searchlight 601, first intake solenoid valve 701, second intake solenoid valve 801, and fourth solenoid valve 903 via its input / output interfaces. The PLC control system automatically and coordinately controls the sequence and precise parameters of all actions according to the preset process program.

[0073] For example, it receives real-time data from temperature sensor 106 and pressure sensor 109 and compares it with preset process parameters such as vacuum level and temperature curve. Through closed-loop control logic, it dynamically adjusts the start and stop of vacuum pump 108, the power of heating elements, and the on / off state of each solenoid valve, thereby precisely controlling the vacuuming rate, the timing of impregnation and dispensing, and the baking temperature and time. This replaces the manual operation of multiple independent components, realizing one-click automated operation of the entire process from closing the lid, vacuuming, dispensing glue, holding pressure, dispensing glue, nitrogen filling, baking, breaking the vacuum, and opening the lid.

[0074] By integrating a PLC control system, complex multi-step processes are integrated into a stable and repeatable automated flow. The PLC control system, through high-frequency acquisition of sensor data and real-time feedback adjustment, ensures that key process parameters such as vacuum level and temperature are strictly controlled within set ranges, effectively eliminating fluctuations caused by manual operation and significantly improving the consistency and reliability of product quality. Furthermore, automated operation greatly shortens waiting and operation time between processes, avoiding efficiency losses caused by human error or inconsistent rhythms, achieving efficient continuous production, and reducing the skill requirements for operators. It also ensures operational safety and convenience; the system can automatically execute safety procedures such as nitrogen filling and vacuum breaking, and strictly interlocks and controls each component according to logical sequence to prevent misoperation. At the same time, its centralized control interface makes process setting, monitoring, and data recording extremely convenient.

[0075] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A vacuum impregnation and baking apparatus, characterized in that: The system includes a frame (100), on which a sealing box (101) is mounted, and a sealing box cover (102) is rotatably connected to the sealing box (101). A sealing box cover drive assembly (200) is installed between the sealing box (101) and the sealing box cover (102). Inside the sealing box (101), a glue-impregnating basin (103) and a material tray rack (104) extending into the glue-impregnating basin (103) are fixedly mounted, and a material tray (105) is detachably mounted on the material tray rack (104). A baking assembly (300) is thermally connected to the glue-impregnating basin (103). A liquid storage tank (107) is also mounted on the frame (100). The liquid storage tank (107) contains adhesive liquid and a vacuum pump (108). The bottom of the liquid storage tank (107) is sealed to the bottom of the impregnation basin (103) by a liquid circuit connection assembly (400). The vacuum pump (108) is sealed to the sealing box cover (102) and the liquid storage tank (107) by a gas circuit connection assembly (500). A second air inlet assembly (800) is sealed on the liquid storage tank (107). A temperature sensor (106), a pressure sensor (109), a sight glass assembly (600), a first air inlet assembly (700), and a nitrogen input assembly (900) are sealed on the sealing box cover (102).

2. The vacuum impregnation and baking equipment according to claim 1, characterized in that: The sealing box cover drive assembly (200) includes a first telescopic member (201), the fixed end of the first telescopic member (201) is hinged to the frame (100), and the telescopic end of the first telescopic member (201) is hinged to the sealing box cover (102); a protective cover (202) is fixedly installed on the telescopic end of the first telescopic member (201) and covers the outside of the first telescopic member (201).

3. The vacuum impregnation and baking equipment according to claim 1, characterized in that: The baking assembly (300) includes a heating plate (301), which is fixedly installed at the bottom of the impregnation basin (103). Heating plates (302) are fixedly installed on the outer side of the impregnation basin (103). The heating plate (301) and the heating plates (302) are thermally connected to the impregnation basin (103). The impregnation basin (103) is made of thermally conductive material.

4. The vacuum impregnation and baking equipment according to claim 1, characterized in that: The liquid circuit connection assembly (400) includes a guide pipe (401), one end of which is fixedly and sealed to the bottom of the impregnation basin (103), and the other end of which is fixedly and sealed to the bottom of the liquid storage tank (107). A first solenoid valve (402) is fixedly installed on the guide pipe (401).

5. The vacuum impregnation and baking equipment according to claim 1, characterized in that: The gas connection assembly (500) includes a three-way pipe (501). The three ports of the three-way pipe (501) are respectively fixedly and sealed with a first gas guide pipe (502), a second gas guide pipe (503), and a third gas guide pipe (504). The first gas guide pipe (502) is fixedly and sealed to the vacuum pump (108), the second gas guide pipe (503) is fixedly and sealed to the sealing box cover (102), and the third gas guide pipe (504) is fixedly and sealed to the top of the liquid storage tank (107). A second solenoid valve (505) is fixedly installed on the second gas guide pipe (503), and a third solenoid valve (506) is fixedly installed on the third gas guide pipe (504).

6. The vacuum impregnation and baking equipment according to claim 5, characterized in that: The inner side of the sealed box cover (102) is fixedly installed with a first filter (507) corresponding to the second air guide pipe (503), and the inner side of the liquid storage tank (107) is fixedly installed with a second filter (508) corresponding to the third air guide pipe (504).

7. The vacuum impregnation and baking equipment according to claim 1, characterized in that: The sight glass assembly (600) includes a searchlight (601) and a transparent glass (602). A first mounting port (603) is centrally located on the top of the sealed box cover (102). The searchlight (601) is fixedly and sealed in the first mounting port (603). A second mounting port (604) is provided on the obliquely arranged side of the sealed box cover (102). The transparent glass (602) is fixedly and sealed in the second mounting port (604).

8. The vacuum impregnation and baking equipment according to claim 1, characterized in that: The first air intake assembly (700) includes a first air intake solenoid valve (701), which is fixedly installed on the top of the sealed box cover (102). The air intake end of the first air intake solenoid valve (701) is fixedly and sealed with a first air filter (702). The second air intake assembly (800) includes a second air intake solenoid valve (801), which is fixedly installed on the top of the liquid storage tank (107). The air intake end of the second air intake solenoid valve (801) is fixedly and sealed with a second air filter (802).

9. The vacuum impregnation and baking equipment according to claim 1, characterized in that: The nitrogen input assembly (900) includes a nitrogen input pipe (901), which is fixedly and sealed on the sealing box cover (102). The nitrogen input pipe (901) is connected to a gas storage tank (902), which is filled with nitrogen. A fourth solenoid valve (903) is fixedly installed on the nitrogen input pipe (901).

10. A vacuum impregnation and baking apparatus according to any one of claims 1-9, characterized in that: It also includes a PLC control system, which is electrically connected to the temperature sensor (106), the vacuum pump (108), the pressure sensor (109), the sealing box cover drive assembly (200), the baking assembly (300), the liquid connection assembly (400), the gas connection assembly (500), the sight glass assembly (600), the first air intake assembly (700), the second air intake assembly (800), and the nitrogen input assembly (900).

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