Rapid cooling equipment for vacuum carburization

Abstract

The invention relates to the technical field of vacuum carburizing cooling application, in particular to rapid cooling equipment for vacuum carburizing, which comprises a vacuum box, a blowing plate and an oil cooling assembly, and is characterized in that three independent chambers, namely an isolation chamber, an air cooling chamber and an oil cooling chamber, which are communicated with one another are arranged, and the isolation assembly is arranged between the adjacent chambers; and the whole cooling process can be controlled to be carried out in the vacuum box. In the working process, the vacuum box is vacuumized, inert protective gas is blown into the vacuum box through the gas blowing plate to form an inert gas environment, and then all the cavities are communicated and separated through folding and unfolding of the isolation assembly, so that after being received in the isolation chamber, a bearing ring subjected to vacuum carburization sequentially passes through the air cooling chamber and the oil cooling chamber to be cooled, and the bearing ring is cooled through the oil cooling chamber. The whole process is carried out under the protection of inert gas, so that the contact between the bearing ring and oxygen is effectively avoided, and the quality of the bearing ring after vacuum carburization is ensured.

Description

Technical Field

[0001] This invention relates to the field of vacuum carburizing cooling application technology, specifically a rapid cooling device for vacuum carburizing. Background Technology

[0002] In modern industrial production, vacuum carburizing technology is commonly used for bearing rings. Vacuum carburizing significantly improves the surface hardness and wear resistance of bearing rings, thereby extending their service life. To meet the needs of different applications, carburized bearing rings usually require rapid cooling to reach the ideal quenching temperature and then undergo subsequent oil quenching. However, these integrated equipment are typically expensive and require high levels of maintenance and operation, making them unaffordable for many small and medium-sized manufacturers. Therefore, most manufacturers still use the traditional method of combining vacuum carburizing equipment with cooling equipment: first, the carburizing process is completed in the vacuum carburizing equipment, then the bearing rings are removed and placed in specialized cooling equipment for cooling.

[0003] However, this traditional equipment combination method has many defects and shortcomings in the cooling equipment when processing products such as bearing rings. First, after the bearing rings are removed from the vacuum carburizing equipment, they need to be exposed to air for a period of time before being placed in the cooling equipment. During this period, the parts are prone to oxidation due to contact with oxygen, resulting in a decrease in surface quality and affecting their hardness and wear resistance. Second, existing equipment usually processes air cooling and oil cooling separately, requiring the transfer of bearing ring products between different equipment. This not only increases the complexity of the operation but also causes interruptions in the cooling process, prolonging the cooling time. This segmented operation not only increases the complexity and labor intensity of the operation but also causes interruptions in the cooling process, prolonging the cooling time and reducing production efficiency. Summary of the Invention

[0004] To address the problems in the prior art, the present invention provides a rapid cooling device for vacuum carburizing.

[0005] The technical solution adopted by this invention to solve its technical problem is: a rapid cooling device for vacuum carburizing, comprising a vacuum chamber, an air blowing plate, and an oil cooling assembly. The vacuum chamber contains three interconnected independent chambers: an isolation chamber, an air-cooled chamber, and an oil-cooled chamber. Isolation assemblies are provided at the separation points between adjacent chambers, selectively isolating or connecting each chamber. Each chamber of the vacuum chamber is equipped with an openable and closable door. The three chambers within the vacuum chamber are selectively isolated or connected through the isolation assemblies, allowing materials to be transferred and processed at different cooling stages. The vacuum chamber is equipped with a transfer assembly that can be raised, lowered, and steered in both the isolation chamber and the air-cooled chamber. The air-blowing plates are all located in the air-cooled chamber of the vacuum chamber. The air-blowing plates are used to blow inert gas into the air-cooled chamber. The oil-cooling assembly is located in the oil-cooled chamber of the vacuum chamber. The transfer assembly realizes the raising, lowering, and steerable transfer of materials in the isolation chamber and the air-cooled chamber. The air-blowing plates provide an inert gas environment in the air-cooled chamber. The oil-cooling assembly completes oil quenching and cooling in the oil-cooled chamber. The two transfer components can transfer materials to each other, and the oil cooling component can transfer materials to the transfer component in the isolation chamber. This design integrates the cooling process after vacuum carburizing into one device, avoiding the time wastage and oxidation risks caused by equipment switching in traditional equipment, and improving cooling efficiency and product quality stability.

[0006] Preferably, the isolation assembly includes two lifting chains, a primary door panel, a secondary door panel, a tertiary door panel, and a lifting drive motor. The two lifting chains are rotatably engaged on both sides of the partition. The primary door panel is fixed to the upper part of the partition. The tertiary door panel is fixed to the two lifting chains on both sides and can move up and down between the upper, middle, and lower parts of the partition via the two lifting chains. The secondary door panel is located between the primary and tertiary door panels. The top of the secondary door panel is equipped with a baffle, which is hung on the top of the tertiary door panel and allows the secondary door panel to move upward with the tertiary door panel. The lifting drive motor is installed on one side of the top of the vacuum chamber and drives the two lifting chains synchronously through a linkage rod and gears. The lifting drive motor drives the tertiary door panel to move up and down via the lifting chains, and the secondary door panel moves with the tertiary door panel via the baffle. When the tertiary door panel is raised, the secondary door panel overlaps with the primary door panel, realizing chamber communication; when the tertiary door panel is lowered, the secondary door panel is controlled in the middle of the partition, realizing chamber isolation.

[0007] Preferably, a limiting groove is vertically formed on the side of the primary door panel closest to the secondary door panel, and a limiting block is fixed on the side of the secondary door panel closest to the primary door panel. The limiting block slides within the limiting groove to limit the lifting range of the secondary door panel. When the secondary door panel is fully extended, the limiting block is located at the bottom of the limiting groove, and the secondary door panel is held in the middle of the partition by the limiting block. The limiting block slides within the limiting groove, ensuring that the secondary door panel remains in the middle of the partition when fully extended, thus achieving a stable partition effect. This limiting design ensures accurate lifting position of the secondary door panel, avoiding poor sealing or equipment failure due to positional deviation, and improving the reliability and stability of the equipment. In high-precision vacuum equipment, sealing performance is crucial. The cooperation of the limiting groove and the limiting block ensures precise positioning of the secondary door panel when it is extended.

[0008] Preferably, two vertical roller grooves, namely Roller Groove 1 and Roller Groove 2, are formed on both sides of the partition. Several auxiliary wheels are installed on both sides of the secondary door panel and the tertiary door panel. The auxiliary wheels on the sides of the secondary door panel roll within Roller Groove 1 on both sides of the partition, and the auxiliary wheels on the sides of the tertiary door panel roll within Roller Groove 2 on both sides of the partition. The rolling of the auxiliary wheels within Roller Groove 1 and Roller Groove 2 reduces friction between the secondary and tertiary door panels during lifting, improving the smoothness and reliability of the lifting process. This reduction in friction during lifting lowers energy consumption and wear, and increases the equipment's lifespan and operational stability.

[0009] Preferably, the transfer assembly includes a base frame, a lifting plate, and a conveyor frame. The lifting plate is vertically mounted above the base frame, and several sliding rods are vertically fixed at the bottom of the lifting plate, extending downwards through the base frame and slidingly engaging with it. The conveyor frame is rotatably mounted on the top of the lifting plate, with conveyor guard plates fixed on both sides of the top of the conveyor frame. Several conveyor rollers are rotatably mounted on the two conveyor guard plates at equal intervals. The lifting plate is raised and lowered on the base frame via the sliding rods, the conveyor frame rotates on the lifting plate, and the conveyor rollers rotate under the drive of a conveyor drive motor, realizing material transfer and height adjustment. This achieves height adjustment of the transfer assembly and flexible material transfer, improving the automation level and production efficiency of the equipment. In multi-batch production scenarios, the transfer assembly can be quickly adjusted according to the height requirements of different materials, ensuring that materials can be accurately transferred from one chamber to another, reducing manual intervention and improving the continuity and stability of production.

[0010] Preferably, a lifting drive cylinder is installed on the base frame to drive the lifting plate to rise and fall. A steering drive cylinder is hinged to the lifting plate to drive the conveyor frame to rotate. A conveyor drive motor is installed on the conveyor frame to drive the conveyor rollers to rotate. The lifting drive cylinder pushes the lifting plate to rise and fall, adjusting the height of the conveyor frame; the steering drive cylinder drives the conveyor frame to rotate, adjusting its direction; and the conveyor drive motor drives the conveyor rollers to rotate, realizing the transfer of materials.

[0011] Preferably, the oil cooling assembly includes a cabinet and an oil immersion assembly. The cabinet is a box structure open at both ends, vertically fixed inside the oil cooling chamber of the vacuum chamber. An oil tank is located in the lower half of the cabinet. The oil immersion assembly includes two lead screws, a lifting frame, and two support plates. The two lead screws are vertically rotatable and fitted on both sides inside the cabinet, with their lower halves located within the oil tank. Nuts are embedded on both sides of the lifting frame, threaded onto the two lead screws respectively. The lifting frame is horizontally raised and lowered between the two lead screws via the two nuts. Two guide rails are horizontally fixed at the top of the lifting frame, and the two support plates are movable and fitted onto the two guide rails respectively. A lifting drive motor drives the lead screws to rotate via a connecting rod, causing the nuts to raise and lower the lifting frame. A push-pull drive cylinder drives the support plates to extend and retract via a connecting plate, realizing the lifting and lowering of materials.

[0012] Preferably, a lifting drive motor is installed at the top of the cabinet. The lifting drive motor synchronously drives two lead screws to rotate via a connecting rod. A push-pull drive cylinder is horizontally fixed in the middle of the lifting frame, and connecting plates are fixed to the ends of the two pallets. The push-pull drive cylinder drives the two pallets to extend and retract via the connecting plates. The lifting drive motor drives the lead screws to rotate via the connecting rod, and the nut drives the lifting frame to rise and fall along the lead screws; the push-pull drive cylinder drives the pallets to extend and retract via the connecting plates, realizing the lifting and lowering of materials.

[0013] Preferably, each of the four corners of the cabinet interior is vertically fixed with a slide rail, the lower half of which is located within an oil trough. Each of the four corners of the lifting frame is fixed with a slider, which slides into the four slide rails. Two rows of pulleys are installed on each of the two guide rails, and these pulleys roll into the support plate. The sliding engagement of the slide rails and sliders ensures the lifting stability of the lifting frame; the rolling engagement of the guide rails and pulleys reduces friction on the support plate during movement, improving the smoothness and reliability of the movement.

[0014] The beneficial effects of this invention are: (1) In this invention, by setting up three interconnected independent chambers—an isolation chamber, an air-cooled chamber, and an oil-cooled chamber—and by setting up isolation components between adjacent chambers, the entire cooling process can be controlled within the vacuum chamber. During operation, the vacuum chamber is first evacuated, and inert protective gas is blown in through an air-blowing plate to form an inert gas environment. Then, by retracting and unfolding the isolation components, the connection and isolation between the chambers are achieved. This allows the bearing rings after vacuum carburizing to be received in the isolation chamber and then cooled sequentially through the air-cooled chamber and the oil-cooled chamber. The entire process is carried out under the protection of inert gas, effectively preventing the bearing rings from contacting oxygen and ensuring the quality of the bearing rings after vacuum carburizing.

[0015] (2) In this invention, air cooling and oil cooling are integrated into one unit, avoiding the cumbersome process of removing the bearing rings from the vacuum carburizing equipment and then placing them into the oil quenching equipment, which is necessary in traditional equipment, thus reducing the time wasted due to equipment conversion. At the same time, by setting up air cooling chambers and oil cooling chambers, the cooling method can be flexibly selected according to the temperature of the bearing rings after vacuum carburizing. When the temperature of the bearing rings is higher than the oil quenching temperature, they can stay in the air cooling chamber and use air blowing plates to blow in low-temperature inert gas for cooling, thereby accelerating the cooling speed; when the temperature meets the requirements for oil quenching, they can quickly enter the oil cooling chamber for oil quenching. This flexible cooling method makes the cooling process more efficient, greatly shortens the processing time, and improves production efficiency.

[0016] (3) In this invention, the design of the transfer components in the equipment realizes automated material transfer. The transfer components in the isolation chamber and the air-cooling chamber can transfer materials to each other, and materials can also be transferred between the oil-cooling components and the transfer components in the isolation chamber. Through the cooperation of the lifting drive cylinder, the steering drive cylinder, and the conveying drive motor, the transfer components can realize height adjustment, rotation of the conveying frame, and rotation of the conveying roller, thereby accurately and stably transferring the vacuum carburized bearing ring products from the isolation chamber to the air-cooling chamber, and then from the air-cooling chamber to the oil-cooling chamber. The lifting drive motor, the push-pull drive cylinder, and other components in the oil-cooling components can realize the lifting of the lifting frame and the extension and retraction of the pallet, completing the forking and lowering actions, and realizing the oil quenching and cooling of the bearing ring products in the oil-cooling chamber. This automated material transfer method reduces the error and instability of manual operation, improves the stability and reliability of production, reduces labor intensity, and also improves production efficiency.

[0017] (4) In this invention, inert gas is blown into the cooling chamber through the air blowing plate, which enables uniform air cooling of the bearing rings, avoiding uneven temperature caused by localized excessively fast or slow cooling. In the oil cooling chamber, the special design of the oil cooling components also ensures the stability of the cooling process. The sliding cooperation of the slide rails at the four corners of the cabinet and the sliders at the four corners of the lifting frame, as well as the rolling cooperation of the two rows of pulleys installed on the two guide rails with the pallet, makes the pallet move more smoothly, accurately delivering the bearing rings into the oil tank for oil quenching. Simultaneously, the oil in the oil tank provides uniform oil quenching of the bearing rings, ensuring consistent cooling performance. This design makes the entire cooling process more stable and uniform, improving product quality consistency and reducing product defects caused by uneven cooling. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the internal structure of the vacuum chamber of the present invention.

[0021] Figure 3 This is a schematic diagram of the isolation component structure of the present invention.

[0022] Figure 4 This is a cross-sectional view showing the combination of the first-level door panel, the second-level door panel, and the third-level door panel of the present invention.

[0023] Figure 5 This is a schematic diagram of the transfer component structure of the present invention.

[0024] Figure 6 This is a schematic diagram of the oil cooling assembly structure of the present invention.

[0025] Figure 7 This is a schematic diagram of the oil-immersed component structure of the present invention.

[0026] In the diagram: 1. Vacuum box; 2. Isolation assembly; 201. Lifting chain; 202. Primary door panel; 203. Secondary door panel; 204. Tertiary door panel; 205. Auxiliary wheel; 206. Baffle; 207. Limiting slide; 208. Limiting block; 3. Transfer assembly; 301. Base frame; 302. Lifting plate; 303. Lifting drive cylinder; 304. Slide bar; 305. Conveyor frame; 306. Steering drive cylinder; 307. Conveyor guard 308. Plate; 309. Conveyor roller; 4. Conveyor drive motor; 4. Oil cooling assembly; 401. Cabinet; 402. Oil tank; 403. Slide rail; 5. Oil immersion assembly; 501. Lead screw; 502. Lifting drive motor; 503. Lifting frame; 504. Slider; 505. Nut; 506. Guide rail; 507. Pulley; 508. Support plate; 509. Push-pull drive cylinder; 510. Connecting plate; 6. Lifting drive motor; 7. Air blowing plate. Detailed Implementation

[0027] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0028] like Figures 1-7 As shown, the rapid cooling device for vacuum carburizing according to the present invention includes a vacuum chamber 1, an air blowing plate 7, and an oil cooling assembly 4. The vacuum chamber 1 has three interconnected independent chambers arranged in sequence: an isolation chamber, an air cooling chamber, and an oil cooling chamber. An isolation assembly 2 is provided at the separation point between adjacent chambers, which selectively isolates or connects each chamber. Each chamber of the vacuum chamber 1 is provided with an openable and closable door. The three chambers in the vacuum chamber 1 are selectively isolated or connected through the isolation assembly 2, so that materials can be transferred and processed at different cooling stages. Both the isolation chamber and the air-cooled chamber of vacuum chamber 1 are equipped with adjustable and directional transfer components 3. Air-blowing plates 7 are located within the air-cooled chamber of vacuum chamber 1, used to blow inert gas into the cooling chamber. An oil-cooling component 4 is located within the oil-cooled chamber of vacuum chamber 1. The transfer components 3 facilitate the lifting, turning, and transfer of materials within the isolation chamber and the air-cooled chamber. The air-blowing plates 7 provide an inert gas environment within the air-cooled chamber, while the oil-cooling component 4 performs oil quenching cooling within the oil-cooled chamber. This segmented design makes the cooling process more orderly and efficient. In actual operation, to ensure the stability and uniformity of the inert gas environment within vacuum chamber 1, the air-blowing plates 7 are designed with a multi-point uniform distribution, blowing inert gas into the chamber through multiple small holes. Within the air-cooled chamber, the air-blowing plates 7 are connected to an independent gas flow controller. Through preset programs on the control panel, the gas flow rate can be precisely controlled, thereby achieving a uniform distribution of inert gas within the chamber. Meanwhile, the chamber is also equipped with a gas sensor to monitor the gas composition and pressure changes in the chamber in real time. Once an abnormal gas composition or pressure fluctuation is detected, the system will automatically adjust the gas flow of the blowing plate 7 to ensure that the chamber always maintains a stable inert gas environment. The two transfer components 3 can transfer materials to each other, and the oil cooling component 4 can transfer materials to the transfer component 3 in the isolation chamber. This design integrates the cooling process after vacuum carburizing into one device, avoiding the time wastage and oxidation risks caused by equipment switching in traditional equipment, and improving cooling efficiency and product quality stability. In the production of high-precision bearing rings, traditional equipment requires transferring the bearing rings from the vacuum carburizing equipment to the oil quenching equipment, which easily exposes them to air and leads to oxidation. This equipment, through its integrated design, completes the cooling process under inert gas protection throughout, significantly improving the surface quality and service life of the product.

[0029] A further improvement in this embodiment is that the isolation assembly 2 includes two lifting chains 201, a primary door panel 202, a secondary door panel 203, a tertiary door panel 204, and a lifting drive motor 6. The two lifting chains 201 are rotatably engaged on both sides of the partition. The primary door panel 202 is fixed to the upper part of the partition. The two sides of the tertiary door panel 204 are fixed to the two lifting chains 201 respectively, and can be raised and lowered between the upper, middle, and lower parts of the partition via the two lifting chains 201. The secondary door panel 203 is located between the primary door panel 202 and the tertiary door panel 204. The top of the secondary door panel 203 is provided with a baffle 206, which is hung on the top of the tertiary door panel 204. The baffle 206 allows the secondary door panel 203 to be raised along with the tertiary door panel 204. The lifting drive motor 6 is installed on one side of the top of the vacuum chamber 1, and the lifting drive motor 6 drives the two lifting chains 201 synchronously through a connecting rod and gears. The lifting drive motor 6 drives the third-level door panel 204 to rise and fall via the lifting chain 201, and the second-level door panel 203 moves along with the third-level door panel 204 via the baffle 206. When the third-level door panel 204 rises, the second-level door panel 203 overlaps with the first-level door panel 202, achieving chamber communication; when the third-level door panel 204 falls, the second-level door panel 203 is controlled in the middle of the partition, achieving chamber isolation. This design achieves flexible communication and isolation between chambers, reduces gas leakage during the cooling process, and improves cooling efficiency and the stability of the vacuum environment. In practical applications, such as in continuous production processes, the quick retraction and deployment function of the isolation component 2 can effectively reduce the gas exchange time inside the equipment and improve production efficiency. At the same time, this design also reduces internal pressure fluctuations caused by frequent door opening and closing, extending the service life of the equipment.

[0030] A further improvement in this embodiment is that a limiting groove 207 is vertically formed on the side of the primary door panel 202 near the secondary door panel 203, and a limiting block 208 is fixed on the side of the secondary door panel 203 near the primary door panel 202. The limiting block 208 slides within the limiting groove 207 to limit the lifting range of the secondary door panel 203. When the secondary door panel 203 is fully extended, the limiting block 208 is located at the bottom of the limiting groove 207, and the secondary door panel 203 is held in the middle of the partition by the limiting block 208. The limiting block 208 slides within the limiting groove 207, and when the secondary door panel 203 is fully extended, the limiting block 208 is located at the bottom of the limiting groove 207, ensuring that the secondary door panel 203 is held in the middle of the partition, thereby achieving a stable partition effect. This limiting design ensures the accurate lifting position of the secondary door panel 203, avoiding poor sealing or equipment failure due to positional deviation, and improving the reliability and stability of the equipment. In high-precision vacuum equipment, sealing performance is crucial. The cooperation of the limiting groove 207 and the limiting block 208 ensures that the secondary door panel 203 can be accurately positioned when unfolded, thereby achieving a reliable sealing effect and reducing gas leakage and cooling efficiency reduction caused by poor sealing. In actual operation, when it is necessary to connect adjacent chambers, the lifting drive motor 6 starts first, driving the two lifting chains 201 to rise synchronously through the linkage rod and gears. At this time, the tertiary door panel 204 moves upward under the drive of the lifting chain 201, and the secondary door panel 203, through the cooperation of the top baffle 206 with the tertiary door panel 204, rises together with the tertiary door panel 204 until the secondary door panel 203 overlaps with the primary door panel 202. At this time, the partition between adjacent chambers opens, realizing communication. Conversely, when it is necessary to separate adjacent chambers, the lifting drive motor 6 rotates in the opposite direction, driving the lifting chain 201 to descend. The third-level door panel 204 then descends to the lower part of the partition, and the second-level door panel 203 descends to the middle of the partition under the action of gravity. Through the cooperation of the limiting slide 207 and the limiting block 208, the second-level door panel 203 is precisely positioned in the middle position, thereby realizing the partition of the chamber.

[0031] A further improvement in this embodiment is that two vertical roller grooves, namely, groove one and groove two, are provided on both sides of the partition. Several auxiliary wheels 205 are installed on both sides of the secondary door panel 203 and the tertiary door panel 204. The auxiliary wheels 205 on both sides of the secondary door panel 203 roll in groove one on both sides of the partition, and the auxiliary wheels 205 on both sides of the tertiary door panel 204 roll in groove two on both sides of the partition. The rolling of the auxiliary wheels 205 in grooves one and two reduces friction between the secondary door panel 203 and the tertiary door panel 204 during lifting, improving the smoothness and reliability of the lifting process. Reducing friction during lifting lowers energy consumption and wear, and increases the lifespan and operational stability of the equipment. In practical applications, such as in frequently used cooling equipment, the cooperation between the auxiliary wheels 205 and the roller grooves effectively reduces door panel wear and lowers maintenance costs. Simultaneously, this design also improves the operational smoothness of the equipment and reduces vibration and noise caused by friction.

[0032] A further improvement in this embodiment is that the transfer assembly 3 includes a base frame 301, a lifting plate 302, and a conveyor frame 305. The lifting plate 302 is vertically mounted above the base frame 301. Several sliding rods 304 are vertically fixed at the bottom of the lifting plate 302, extending downwards through the base frame 301 and slidingly engaging with it. The conveyor frame 305 is rotatably mounted on the top of the lifting plate 302. Conveyor guard plates 307 are fixed on both sides of the top of the conveyor frame 305, and several conveyor rollers 308 are rotatably mounted on the two conveyor guard plates 307 at equal intervals. The lifting plate 302 is raised and lowered on the base frame 301 via the sliding rods 304, the conveyor frame 305 rotates on the lifting plate 302, and the conveyor rollers 308 rotate under the drive of the conveyor drive motor 309, thus realizing material transfer and height adjustment. This achieves height adjustment of the transfer assembly 3 and flexible material transfer, improving the automation level and production efficiency of the equipment. In multi-batch production scenarios, the transfer component 3 can be quickly adjusted according to the height requirements of different materials, ensuring that materials can be accurately transferred from one chamber to another, reducing manual intervention and improving the continuity and stability of production.

[0033] A further improvement in this embodiment is that a lifting drive cylinder 303 for driving the lifting plate 302 to rise and fall is installed on the base frame 301. A steering drive cylinder 306 for driving the conveyor frame 305 to rotate is hinged to the lifting plate 302. A conveying drive motor 309 for driving the conveyor roller 308 to rotate is installed on the conveyor frame 305. The lifting drive cylinder 303 pushes the lifting plate 302 to rise and fall, adjusting the height of the conveyor frame 305; the steering drive cylinder 306 drives the conveyor frame 305 to rotate, adjusting its direction; and the conveying drive motor 309 drives the conveyor roller 308 to rotate, realizing the transfer of materials.

[0034] A further improvement in this embodiment is that the oil cooling assembly 4 includes a cabinet 401 and an oil immersion assembly 5. The cabinet 401 is a box structure with open ends. The cabinet 401 is vertically fixed in the oil cooling chamber of the vacuum chamber 1. An oil tank 402 is provided in the lower half of the cabinet 401. The oil immersion assembly 5 includes two lead screws 501, a lifting frame 503, and two support plates 508. The two lead screws 501 are vertically rotatably engaged on both sides inside the cabinet 401, and the lower half of the two lead screws 501 is located in the oil tank 402. Nuts 505 are embedded on both sides of the lifting frame 503. The two nuts 505 are threaded onto the two lead screws 501 respectively. The lifting frame 503 is horizontally raised and lowered between the two lead screws 501 by the two nuts 505. Two guide rails 506 are horizontally fixed at the top of the lifting frame 503, and the two support plates 508 are movably engaged on the two guide rails 506 respectively. The lifting drive motor 502 drives the lead screw 501 to rotate via a connecting rod, and the nut 505 drives the lifting frame 503 to rise and fall; the push-pull drive cylinder 509 drives the pallet 508 to extend and retract via the connecting plate 510, realizing the lifting and lowering of materials. This achieves automated lifting and transfer of materials in the oil cooling chamber, improving the efficiency and stability of oil quenching cooling.

[0035] A further improvement in this embodiment is that a lifting drive motor 502 is installed on the top of the cabinet 401. The lifting drive motor 502 synchronously drives two lead screws 501 to rotate via a connecting rod. A push-pull drive cylinder 509 is horizontally fixed in the middle of the lifting frame 503. A connecting plate 510 is fixed to the ends of the two pallets 508. The push-pull drive cylinder 509 drives the two pallets 508 to extend and retract via the connecting plate 510. The lifting drive motor 502 drives the lead screws 501 to rotate via the connecting rod, and the nut 505 drives the lifting frame 503 to rise and fall along the lead screws 501. The push-pull drive cylinder 509 drives the pallets 508 to extend and retract via the connecting plate 510, realizing the lifting and lowering of materials.

[0036] A further improvement in this embodiment is that each of the four corners of the cabinet 401 is vertically fixed with a slide rail 403, the lower half of which is located within the oil trough 402. Each of the four corners of the lifting frame 503 is fixed with a slider 504, which slides in contact with the four slide rails 403. Two rows of pulleys 507 are installed on each of the two guide rails 506, and these pulleys 507 roll in contact with the support plate 508. The sliding contact between the slide rails 403 and the sliders 504 ensures the lifting stability of the lifting frame 503; the rolling contact between the guide rails 506 and the pulleys 507 reduces friction on the support plate 508 during movement, improving the smoothness and reliability of the movement.

[0037] Before starting the equipment, ensure that all three doors of the vacuum chamber 1—the isolation chamber, the air-cooled chamber, and the oil-cooled chamber—are closed to create a completely sealed environment. Start the equipment via the control panel to activate the lifting drive motors 6 of the two isolation components 2, which in turn drive the lifting chain 201 to raise the secondary door panel 203 and the tertiary door panel 204 to their overlapping position with the primary door panel 202, thus connecting the isolation chamber, the air-cooled chamber, and the oil-cooled chamber. Next, start the vacuum pump to evacuate the vacuum chamber 1 until the set vacuum level is reached. Then, evenly blow inert protective gas (such as nitrogen) into the chamber through the air blowing plate 7 to ensure a stable inert gas environment and prevent oxidation of the bearing rings during cooling.

[0038] Then, the conveyor frame 305 of the transfer assembly 3 in the isolation chamber is adjusted to face the closed door of the isolation chamber using the steering drive cylinder 306. The vacuum carburized bearing rings are placed on the conveyor outside the isolation chamber. The corresponding closed door of the isolation chamber is opened, and the height of the transfer assembly 3 inside the isolation chamber is adjusted using the lifting drive cylinder 303 so that the height of its conveyor roller 308 is consistent with the height of the external conveyor. The conveyor drive motor 309 is started, causing the conveyor roller 308 to rotate and smoothly receive the bearing rings onto the conveyor frame 305 of the transfer assembly 3 inside the isolation chamber. The corresponding closed door of the isolation chamber is then closed. The isolation assembly 2 between the isolation chamber and the air-cooling chamber is retracted, connecting the two chambers. Through the coordinated action of the steering drive cylinder 306 and the lifting drive cylinder 303 of the transfer assembly 3, the bearing rings inside the isolation chamber are smoothly transferred to the transfer assembly 3 inside the air-cooling chamber. Depending on the temperature of the bearing rings, it is determined whether they need to stay in the air-cooling chamber for cooling. If the temperature of the bearing rings is higher than the temperature required for oil quenching, then in the air-cooling chamber, the air blower 7 continuously blows in low-temperature inert gas to uniformly cool the bearing rings until the temperature drops to the range required for oil quenching. If the temperature of the bearing rings meets the requirements for oil quenching, proceed directly to the next step.

[0039] Finally, the isolation component 2 between the air-cooled chamber and the oil-cooled chamber is retracted, connecting the two chambers. The lifting drive motor 502 of the oil-cooled component 4 drives the lead screw 501 to rotate, raising the lifting frame 503 to a suitable position so that the height of the pallet 508 matches the height of the conveyor roller 308 of the transfer component 3 inside the air-cooled chamber. The push-pull drive cylinder 509 is activated, extending the pallet 508 below the conveyor roller 308 of the transfer component 3 inside the air-cooled chamber via the connecting plate 510. The bearing ring product is smoothly transferred to the pallet 508 using the conveyor roller 308 of the transfer component 3 inside the air-cooled chamber. The pallet 508 moves smoothly on the guide rail 506 via the pulley 507, lifting the bearing ring product and retracting it directly above the lifting frame 503. Subsequently, the lifting drive motor 502 reverses, driving the lead screw 501 to rotate, causing the lifting frame 503 to sink into the oil tank 402, completely immersing the bearing ring product in the cooling oil for oil quenching. After cooling is complete, the lifting drive motor 502 restarts, raising the lifting frame 503 to remove the bearing ring product from the oil tank 402 for oil control, removing excess cooling oil from the surface. After oil control is complete, the push-pull drive cylinder 509 actuates again, extending the pallet 508 above the conveyor roller 308 of the transfer assembly 3 in the air-cooled chamber. The conveyor drive motor 309 drives the conveyor roller 308 to rotate, sending the oil-quenched and cooled bearing ring product back to the transfer assembly 3 in the air-cooled chamber. If no more products need cooling, open the corresponding closed door of the air-cooled chamber and send the cooled bearing rings out of the equipment. If further processing is required, use isolation component 2 to separate the oil-cooled chamber and the air-cooled chamber, open isolation component 2 between the air-cooled chamber and the isolation chamber, transfer the oil-quenched bearing rings from the air-cooled chamber to the isolation chamber, close isolation component 2 between the isolation chamber and the air-cooled chamber, open the corresponding closed door of the isolation chamber, send the cooled bearing rings out of the equipment, and prepare to receive the next batch of bearing rings to be cooled.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rapid cooling device for vacuum carburizing, comprising a vacuum chamber (1), an air blowing plate (7), and an oil cooling assembly (4), characterized in that: The vacuum chamber (1) is provided with three interconnected independent chambers in sequence: an isolation chamber, an air-cooled chamber, and an oil-cooled chamber. An isolation component (2) is provided at the separation point between adjacent chambers. The isolation component (2) can selectively isolate or connect each chamber. Each chamber of the vacuum chamber (1) is provided with an openable and closable door. The vacuum chamber (1) is equipped with a transfer assembly (3) that can be raised, lowered, and rotated. The air blowing plate (7) is installed in the air cooling chamber of the vacuum chamber (1). The air blowing plate (7) is used to blow inert gas into the cooling chamber. The oil cooling assembly (4) is installed in the oil cooling chamber of the vacuum chamber (1). The two transfer components (3) can transfer materials to each other, and the oil cooling component (4) can transfer materials to the transfer component (3) in the isolation chamber.

2. The rapid cooling device for vacuum carburizing according to claim 1, characterized in that: The isolation assembly (2) includes two lifting chains (201), a primary door panel (202), a secondary door panel (203), a tertiary door panel (204), and a lifting drive motor (6). The two lifting chains (201) are rotatably engaged on both sides of the partition. The primary door panel (202) is fixed to the upper part of the partition. The tertiary door panel (204) is fixed to the two lifting chains (201) on both sides and can be raised and lowered between the upper, middle, and lower parts of the partition via the two lifting chains (201). The secondary door panel (203) is located between the primary door panel (202) and the tertiary door panel (204). The top of the secondary door panel (203) is provided with a baffle (206), which is hung on the top of the tertiary door panel (204). The baffle (206) enables the secondary door panel (203) to be lifted upward along with the tertiary door panel (204). The lifting drive motor (6) is installed on one side of the top of the vacuum box (1), and the lifting drive motor (6) drives the two lifting chains (201) synchronously through the linkage rod and gear.

3. The rapid cooling device for vacuum carburizing according to claim 2, characterized in that: A limiting groove (207) is vertically opened on the side of the first-level door panel (202) near the second-level door panel (203). A limiting block (208) is fixed on the side of the second-level door panel (203) near the first-level door panel (202). The limiting block (208) is slidably engaged in the limiting groove (207) to limit the lifting range of the second-level door panel (203). When the second-level door panel (203) is fully unfolded, the limiting block (208) is located at the bottom of the limiting groove (207), and the second-level door panel (203) is held in the middle of the partition by the limiting block (208).

4. A rapid cooling device for vacuum carburizing according to claim 2, characterized in that: Both sides of the partition are vertically provided with roller groove one and roller groove two. Several auxiliary wheels (205) are installed on both sides of the secondary door panel (203) and both sides of the tertiary door panel (204). The auxiliary wheels (205) on both sides of the secondary door panel (203) roll in the roller groove one on both sides of the partition, and the auxiliary wheels (205) on both sides of the tertiary door panel (204) roll in the roller groove two on both sides of the partition.

5. A rapid cooling device for vacuum carburizing according to claim 1, characterized in that: The transfer assembly (3) includes a base frame (301), a lifting plate (302), and a conveyor frame (305). The lifting plate (302) is raised and lowered above the base frame (301). Several sliding rods (304) are vertically fixed at the bottom of the lifting plate (302). The sliding rods (304) penetrate the base frame (301) downwards and slide with the base frame (301). The conveyor frame (305) is rotatably fitted on the top of the lifting plate (302). Conveying guard plates (307) are fixed on both sides of the top of the conveyor frame (305). Several conveying rollers (308) are rotatably fitted on the two conveying guard plates (307) at equal intervals.

6. A rapid cooling device for vacuum carburizing according to claim 5, characterized in that: The base frame (301) is equipped with a lifting drive cylinder (303) for driving the lifting plate (302) to rise and fall. The lifting plate (302) is hinged with a steering drive cylinder (306) for driving the conveyor frame (305) to rotate. The conveyor frame (305) is equipped with a conveyor drive motor (309) for driving the conveyor roller (308) to rotate.

7. A rapid cooling device for vacuum carburizing according to claim 6, characterized in that: The oil cooling assembly (4) includes a cabinet (401) and an oil immersion assembly (5). The cabinet (401) is a box structure with open ends. The cabinet (401) is vertically fixed in the oil cooling chamber of the vacuum box (1). An oil tank (402) is provided in the lower half of the cabinet (401). The oil immersion assembly (5) includes two lead screws (501), a lifting frame (503), and two support plates (508). The two lead screws (501) are vertically rotatably engaged on both sides inside the cabinet (401), and the two lead screws... The lower half of the rod (501) is located in the oil tank (402). Nuts (505) are embedded on both sides of the lifting frame (503). The two nuts (505) are threaded onto the two lead screws (501). The lifting frame (503) is horizontally raised and lowered between the two lead screws (501) through the two nuts (505). The top of the lifting frame (503) has two horizontally fixed guide rails (506). The two pallets (508) are moved and engaged on the two guide rails (506).

8. A rapid cooling device for vacuum carburizing according to claim 7, characterized in that: A lifting drive motor (502) is installed on the top of the cabinet (401). The lifting drive motor (502) drives two lead screws (501) to rotate synchronously through a connecting rod. A push-pull drive cylinder (509) is horizontally fixed in the middle of the lifting frame (503). A connecting plate (510) is fixed at the ends of the two trays (508). The push-pull drive cylinder (509) drives the two trays (508) to extend and retract through the connecting plate (510).

9. A rapid cooling device for vacuum carburizing according to claim 7, characterized in that: The cabinet (401) has vertically fixed slide rails (403) at all four corners. The lower half of each of the four slide rails (403) is located in the oil tank (402). The lifting frame (503) has fixed sliders (504) at all four corners. The four sliders (504) are in sliding cooperation with the four slide rails (403) respectively. Two rows of pulleys (507) are installed on each of the two guide rails (506). The pulleys (507) are in rolling cooperation with the tray (508).

10. A rapid cooling device for vacuum carburizing according to any one of claims 1-9, characterized in that: The specific usage process of this rapid cooling device for vacuum carburizing includes the following steps: Step 1: Before starting the equipment, ensure that all three closed doors of the isolation chamber, air-cooled chamber and oil-cooled chamber of the vacuum chamber (1) are closed to form a sealed environment. The lifting drive motor (6) of the two isolation components (2) starts to work, driving the lifting chain (201) to lift the secondary door plate (203) and the tertiary door plate (204) to the position of overlapping with the primary door plate (202), so that the isolation chamber, air-cooled chamber and oil-cooled chamber are connected to each other. Next, the vacuum chamber (1) is evacuated until the set vacuum degree is reached. Then, inert protective gas is blown into the chamber evenly through the blowing plate (7) to ensure that a stable inert gas environment is formed in the chamber. Step 2: Adjust the conveyor frame (305) of the transfer assembly (3) inside the isolation chamber to face the closed door of the isolation chamber using the steering drive cylinder (306). Place the vacuum carburized bearing rings on the conveying device outside the isolation chamber. Open the closed door corresponding to the isolation chamber. Use the lifting drive cylinder (303) to adjust the height of the transfer assembly (3) inside the isolation chamber so that the height of its conveyor roller (308) is consistent with the height of the external conveying device. Start the conveying drive motor (309) to make the conveyor roller (308) rotate and receive the bearing rings onto the conveyor frame (305) of the transfer assembly (3) inside the isolation chamber. Then close the closed door corresponding to the isolation chamber and connect the isolation chamber with the outside door. The isolation component (2) between the air-cooled chambers is retracted to connect the two chambers. Through the coordinated action of the steering drive cylinder (306) and the lifting drive cylinder (303) of the transfer component (3), the bearing ring product in the isolation chamber is smoothly transferred to the transfer component (3) in the air-cooled chamber. Depending on the temperature of the bearing ring product, it is determined whether it needs to stay in the air-cooled chamber for cooling. If the temperature of the bearing ring product is higher than the temperature required for oil quenching, the air blowing plate (7) continuously blows low-temperature inert gas into the air-cooled chamber to uniformly cool the bearing ring product until its temperature drops to the temperature range required for oil quenching. If the temperature of the bearing ring product meets the requirements for oil quenching, the next step is carried out directly. Step 3: Retract the isolation component (2) between the air-cooled chamber and the oil-cooled chamber to connect the two chambers. Drive the lead screw (501) through the lifting drive motor (502) of the oil-cooled component (4) to rotate, thereby raising the lifting frame (503) to the appropriate position so that the height of the pallet (508) is consistent with the height of the conveying roller (308) of the transfer component (3) in the air-cooled chamber. Start the push-pull drive cylinder (509) to extend the pallet (508) under the conveying roller (308) of the transfer component (3) in the air-cooled chamber through the connecting plate (510). The bearing ring product is transferred to the pallet (508) by the conveying roller (308) of the transfer assembly (3) in the air-cooled chamber. The pallet (508) moves on the guide rail (506) via pulleys (507), lifting the bearing ring product and retracting it to directly above the lifting frame (503). Subsequently, the lifting drive motor (502) reverses, driving the lead screw (501) to rotate, causing the lifting frame (503) to sink into the oil tank (402), completely immersing the bearing ring product in the cooling oil for oil quenching. After cooling is completed, the lifting drive motor (502)... The machine restarts, raising the lifting frame (503) to remove the bearing rings from the oil tank (402) for oil control. Excess cooling oil is removed from the surface. After oil control, the push-pull drive cylinder (509) operates again, extending the pallet (508) above the conveyor roller (308) of the transfer assembly (3) in the air-cooled chamber. The conveyor roller (308) is driven to rotate by the conveyor drive motor (309), returning the oil-quenched bearing rings to the transfer assembly (3) in the air-cooled chamber. If no further products require cooling... If the oil cooling chamber is to be cooled, the corresponding closed door of the air cooling chamber is opened, and the cooled bearing ring products are sent out of the equipment. If subsequent products need to be processed, the oil cooling chamber and the air cooling chamber are separated by the isolation component (2), and the isolation component (2) between the air cooling chamber and the isolation chamber is opened. The oil-quenched and cooled bearing ring products are transferred from the air cooling chamber to the isolation chamber. Then the isolation component (2) between the isolation chamber and the air cooling chamber is closed, and the corresponding closed door of the isolation chamber is opened, and the cooled bearing ring products are sent out of the equipment. At the same time, the equipment is ready to receive the next batch of bearing ring products to be cooled.

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