A multi-chamber core atmosphere annealing crucible car

Abstract

The application discloses a multi-chamber core atmosphere annealing crucible car, which is characterized by the following: a car body is arranged on a conveying structure; the car body comprises a lower seat for placing a core; an upper cover is fixed on the lower seat through locking members; lifting structures are arranged on the inward sides of left and right side frames; lifting structures are arranged on the front and back sides of the top end of the lifting structures and are used for lifting the upper cover; locking structures are arranged on the lifting structures and are used for locking and unlocking the locking members in the car body; driving members are arranged on each lifting structure and are used for driving the locking structures to lock and unlock the locking members; an outer car track is further arranged on the front side of the bottom frame; a conveying trolley is movably arranged on the outer car track; the locking structures are linked with the lifting structures through the driving members; the locking and unlocking actions are synchronized with the lifting and lowering processes of the upper cover; manual intervention is not needed; and the operation errors and loosening risks of traditional manual locking are avoided.

Description

Technical Field

[0001] This invention relates to the field of annealing equipment, and more particularly to a crucible cart for multi-chamber iron core atmosphere annealing. Background Technology

[0002] Annealing is a critical process in the production and processing of iron cores. Its core involves heating, isothermalizing, and cooling the iron core in a specific gas atmosphere (such as helium) to eliminate internal stress and improve magnetic properties and structural stability. In this process, the iron core needs to be placed in a sealed container and transferred between different stations (loading, heating, and cooling). Traditional crucible carts often use manual bolts or simple clips to secure the upper and lower covers, which is not only cumbersome and time-consuming, but also prone to loosening due to vibration during transport, disrupting the internal sealing environment and affecting the annealing effect. Furthermore, lifting the upper cover and locking / unlocking are often independent operations requiring additional drive mechanisms or manual intervention, leading to poor process coordination and low production efficiency. Summary of the Invention

[0003] The present invention proposes a crucible car for atmosphere annealing of multi-chamber iron cores, which solves the above-mentioned problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A crucible cart for multi-chamber iron core atmosphere annealing includes a base frame, with side frames symmetrically welded to the top of the base frame, and a square frame welded to the top of the side frames. A conveying structure is mounted on the base frame, and a cart body is placed on the conveying structure. The cart body includes a lower seat for placing the iron core, and an upper cover is fixed above the lower seat by locking components. A high-temperature resistant sealing gasket is fixed above the lower seat. When the upper cover is pressed against the lower seat, it will tightly press the sealing gasket under its own weight, thereby forming a seal. A valve is installed on the side of the upper cover for evacuating the interior of the cart body and filling it with helium. The conveying structure adopts a chain drive device, and the cart body can be driven back and forth by the chain on the conveying structure. Each of the two side frames, facing inwards, is equipped with a lifting structure. The top and rear sides of each lifting structure are equipped with lifting mechanisms for raising the cover. Each lifting structure is equipped with a locking mechanism for locking and unlocking the locking components in the vehicle body. Each lifting mechanism is equipped with a drive unit that drives the locking mechanism to lock and unlock the locking components. An outer track is also installed on the front of the base frame. A conveyor trolley is movably mounted on the outer track. The conveyor trolley has its own drive unit for movement and a chain drive unit, allowing the vehicle body to move above the base frame as needed for opening or closing the cover.

[0005] Preferably, a plurality of positioning rods arranged in a rectangular structure are fixed above the lower seat. The upper end of the positioning rod is provided with a thread. The locking component includes a rotating shaft seat fixed on the upper cover. A sleeve is rotatably and slidably mounted on the rotating shaft seat. A threaded sleeve is fixed above the sleeve. Pushing blocks are symmetrically welded on both sides of the threaded sleeve. A rotating groove is opened inside the rotating shaft seat. A rotating ring is fixed below the sleeve. The rotating ring is rotatably sleeved in the rotating groove, and the height of the rotating groove is greater than the height of the rotating ring. When the upper cover is pressed onto the lower seat, the positioning rod can pass through the round hole and be inside the sleeve, and the threaded part at the top of the positioning rod contacts the lower end of the threaded sleeve.

[0006] Preferably, the lifting structure includes a reducer and a lifting rod fixed on the front and rear sides of the side frame. The two reducers are driven by a transmission shaft. The output shaft of the reducer is hollow at the top and bottom and is fitted with a lifting screw seat. The lifting rod is provided with a threaded section. The threaded section on the lifting rod is threadedly connected to the lifting screw seat. A lifting frame is fixed between the top ends of the two lifting rods. The lifting structure is installed above the lifting frame. The two lifting structures are connected to the lifting motor via a gearbox and a conveyor shaft. The lifting motor enables the lifting screw seats in the two lifting structures to rotate synchronously via the gearbox and conveyor shaft, thereby causing the threaded section on the lifting rod to move vertically up and down within the lifting screw seat.

[0007] Preferably, a set of lifting frames is welded to the front and rear ends of both sides of the upper cover. The lifting structure includes a fixed plate fixed above the lifting frame. Two sets of symmetrically distributed linear sliders are installed on the fixed plate. A linear track is slidably installed on each linear slider. A movable plate is fixed between the two linear tracks. A lifting block is fixed above the movable plate on the side closer to the vehicle body. A drive cylinder is fixed above the fixed plate. The push rod of the drive cylinder is fixed below the movable plate. The lifting frame has positioning holes, and the lifting block is fixed with a positioning pin. The lifting block is aligned with the lifting frame. When the lifting structure moves the lifting structure to a specified height below, the push rod of the drive cylinder extends and the lifting block is inserted into the lifting frame. Then, when the lifting structure rises, the lifting block will push the top cover to move up together. At the same time, the positioning pin will also be inserted into the positioning hole to prevent the top cover from falling off.

[0008] Preferably, the driving component includes two offset sliders that are respectively fixed below two linear tracks in the lifting structure by brackets. An offset track is slidably installed between the two offset sliders. A driving roller is rotatably installed at the center of the offset track below by a bearing. A return spring is fixed at the center of the offset track above. The other end of the return spring is fixed to one of the offset sliders. The return spring allows the offset track to return to its original position after movement, that is, to ensure that the driving roller is always in the middle below the two offset sliders, which facilitates the connection between the driving roller and the locking structure.

[0009] Preferably, the locking structure includes a rotating pin fixed to the side of the reducer facing the vehicle body via a bracket. A deflection plate is rotatably mounted on the rotating pin via a bearing. The rotating pin is rotatably mounted at the center of the deflection plate, and an installation groove is provided below the deflection plate. A torsion spring is installed in the installation groove. One end of the torsion spring is fixed to the deflection plate, and the other end is fixed to the rotating pin. The torsion spring ensures that the deflection plate remains in its original position when no external force is applied. Two sets of symmetrically distributed support blocks are fixed to the side of the reducer facing the vehicle body. Unlocking blocks are slidably mounted on the support blocks, and the unlocking blocks are slidably connected to the deflection plate.

[0010] Preferably, the deflection plate is provided with a locking groove and an unlocking groove, and the distance between the unlocking groove and the vehicle body is greater than the distance between the locking groove and the vehicle body; When the lifting block is away from the lifting frame, that is, when the push rod of the drive cylinder is in the retracted state, the lifting block is not inserted into the lifting frame. At this time, the drive roller in the drive component is directly above the unlocking groove. When the lifting block is inserted into the lifting frame, that is, when the push rod of the drive cylinder is in the extended state and the lifting block is inserted into the lifting frame, the drive roller in the drive component is directly above the unlocking slide groove.

[0011] Preferably, the unlocking block has a T-shaped structure and a straight groove is provided on the unlocking block. A shaft roller is rotatably mounted on the deflection plate via a shaft pin, and the shaft roller is rolled and inserted into the straight groove. When the drive roller is inserted into the unlocking groove and the push rod of the drive cylinder extends, the shaft roller will push the front unlocking block (i.e. the unlocking block that is closer to the unlocking groove and the locking groove) toward the push block of the screw sleeve. That is, the front unlocking block pushes the front push block, and the push block causes the screw sleeve to rotate clockwise. The screw sleeve will be threaded onto the positioning rod. When the drive roller is inserted into the locking groove and the push rod of the drive cylinder retracts, the shaft roller will push the unlocking block on the rear side toward the push block of the screw sleeve. That is, the unlocking block on the rear side pushes the push block on the rear side, and the push block causes the screw sleeve to rotate counterclockwise, thus releasing the screw sleeve from the threaded connection with the positioning rod.

[0012] Preferably, a guide block is fixed on the support block, and a guide groove is provided on the unlocking block. The guide block is slidably inserted into the guide groove to guide the unlocking block so that it can only move in a straight line to the left and right.

[0013] The beneficial effects of this invention are: 1. This invention achieves rigid fixation between the upper cover and the lower seat through the coordinated design of the locking component and the locking structure, using the threaded connection between the screw sleeve and the positioning rod. With the high-temperature resistant sealing gasket above the lower seat, the upper cover is tightly pressed against the sealing gasket under the dual action of its own weight and the threaded locking force, ensuring the sealing performance of the cavity, effectively preventing atmosphere leakage, and ensuring the stability of the gas atmosphere during the iron core annealing process. 2. The locking structure is linked with the lifting structure through the driving component to achieve synchronous coordination of locking and unlocking actions with the lifting and lowering of the top cover. No manual intervention is required, avoiding the operational errors and loosening risks of traditional manual locking. At the same time, the guide design of the unlocking block (the guide block and the guide groove cooperate) ensures that the locking / unlocking action is precise and stable, and is not prone to jamming in high temperature environments, thus improving the reliability of the equipment. 3. The lifting structure uses a drive cylinder to drive the linear track to slide, which drives the lifting block to be precisely inserted into the lifting frame of the upper cover. With the positioning pin and positioning hole, it ensures that the upper cover is evenly stressed, does not tilt, and does not fall off during the lifting process. The lifting structure achieves synchronous lifting of the lifting rods on both sides through the coordinated transmission of the lifting motor, reducer, and drive shaft, ensuring the stability of the upper cover lifting / lowering and avoiding collision damage to the iron core inside the cavity. 4. The conveying structure of the base frame and the conveying trolley of the outer track form a linkage transfer system. The car body can move flexibly between the conveying trolley and the base frame. With the multi-chamber design, it realizes the alternating continuous operation of "loading-heating-cooling". When one car body is working in the heating section, the other can be loaded or cooled at the same time, which greatly shortens the process interval and improves production efficiency and capacity. Attached Figure Description

[0014] Figure 1 This is a front view of a crucible cart for multi-chamber iron core atmosphere annealing proposed in this invention; Figure 2 for Figure 1 Schematic diagram of the structure of the CRRC body; Figure 3 for Figure 1 Exploded view of the middle section of the train; Figure 4 for Figure 3 Exploded view of the central locking component; Figure 5 for Figure 1 Structural diagram of the base frame, lifting structure, and hoisting structure; Figure 6 for Figure 5Enlarged view of point A in the middle; Figure 7 for Figure 5 Structural diagram of the lifting structure, the raising structure, and the locking structure; Figure 8 for Figure 7 A schematic diagram of the lifting structure; Figure 9 for Figure 8 Exploded view of the mid-lift structure; Figure 10 for Figure 7 A schematic diagram of the locking structure; Figure 11 for Figure 10 Exploded view of the central locking structure; Figure 12 This is a schematic diagram showing the positional distribution of the locking structure and locking components in a crucible car for multi-chamber iron core atmosphere annealing proposed in this invention.

[0015] Numbering on the map: 1. Base frame; 11. Side frame; 2. Conveying structure; 3. Car body; 31. Lower seat; 311. Positioning rod; 32. Upper cover; 33. Lifting frame; 34. Locking component; 341. Screw sleeve; 342. Push block; 343. Sleeve seat; 344. Rotary shaft seat; 4. Lifting structure; 41. Reducer; 42. Lifting screw seat; 43. Lifting rod; 44. Lifting frame; 45. Drive shaft; 46. Lifting motor; 5. Lifting structure; 51. Fixed plate; 52. Linear slider; 53. Linear track; 54. Moving plate; 55. Lifting block; 56. Driving component; 561. Offset track; 562. Driving roller; 563. Offset slider; 564. Return spring; 57. Driving cylinder; 6. External track; 61. Conveying trolley; 7. Locking structure; 71. Deflection plate; 711. Locking groove; 712. Unlocking groove; 713. Rotating pin; 714. Shaft roller; 72. Unlocking block; 721. Straight groove; 722. Guide groove; 73. Support block; 731. Guide block. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0017] Reference Figure 1 - Figure 12A crucible cart for multi-chamber iron core atmosphere annealing includes a base frame 1, with side frames 11 symmetrically welded to the top of the base frame 1. A square frame is welded to the top of the side frames 11. A conveying structure 2 is installed on the base frame 1, and a cart body 3 is placed on the conveying structure 2. The cart body 3 includes a lower seat 31 for placing the iron core. An upper cover 32 is fixed above the lower seat 31 by a locking member 34. A high-temperature resistant sealing gasket is fixed above the lower seat 31. When the upper cover 32 is pressed against the lower seat 31, it will tightly press the sealing gasket under its own weight, thereby forming a seal. A valve is installed on the side of the upper cover 32 for evacuating the interior of the cart body 3 and filling it with helium. The conveying structure 2 adopts a chain drive device, and the cart body 3 can be driven back and forth by the chain on the conveying structure 2. The vehicle body 3 is equipped with lifting structures 4 on the inward side of both the left and right side frames 11. Lifting structures 5 for raising the top cover 32 are installed on the front and rear sides of the top of the lifting structures 4. Locking structures 7 for locking and unlocking the locking parts 34 in the vehicle body 3 are installed on the lifting structures 4. Each lifting structure 5 is equipped with a driving component 56, which drives the locking structure 7 to lock and unlock the locking parts 34. An outer car rail 6 is also installed on the front side of the base frame 1. A conveyor trolley 61 is movably installed on the outer car rail 6. The conveyor trolley 61 has its own driving device for moving the trolley, and a chain drive device is also installed on the conveyor trolley 61, so that the vehicle body 3 can move above the base frame 1 as needed to open or close the cover.

[0018] Reference Figure 2 - Figure 4 The lower seat 31 has multiple positioning rods 311 arranged in a rectangular structure fixed above it. The upper end of the positioning rods 311 is provided with threads. The locking component 34 includes a rotating shaft seat 344 fixed on the upper cover 32. A sleeve 343 is rotatably and slidably mounted on the rotating shaft seat 344. A screw sleeve 341 is fixed above the sleeve 343. Push blocks 342 are symmetrically welded on both sides of the screw sleeve 341. The rotating shaft seat 344 has a rotating groove inside, and a rotating ring is fixed below the sleeve 343. The rotating ring is rotated and fitted into the rotating groove, and the height of the rotating groove is greater than the height of the rotating ring. This allows the sleeve 343 to move slightly up and down within the rotating shaft seat 344. The outer diameter of the positioning rod 311 is smaller than the inner diameter of the sleeve 343, and a round hole is provided at the edge of the upper cover 32, which is located directly below the sleeve 343. When the upper cover 32 is pressed onto the lower seat 31, the positioning rod 311 can pass through the round hole and be inside the sleeve 343, and the threaded part at the top of the positioning rod 311 contacts the lower end of the threaded sleeve 341. Then, one of the pushing blocks 342 is pushed to make the threaded sleeve 341 rotate clockwise, so that the threaded sleeve 341 is connected with the threaded part, thereby fixing the upper cover 32 and the lower seat 31, preventing them from shifting in position during movement, and ensuring internal sealing.

[0019] Reference Figure 5 - Figure 11 The lifting structure 4 includes a reducer 41 fixed on the front and rear sides of the side frame 11 and a lifting rod 43. The two reducers 41 are driven by a transmission shaft 45. The output shaft of the reducer 41 is hollow at the top and bottom and is fitted with a lifting screw seat 42. The lifting rod 43 is provided with a threaded section. The threaded section on the lifting rod 43 is threadedly engaged with the lifting screw seat 42. A lifting frame 44 is fixed between the top ends of the two lifting rods 43. The lifting structure 5 is installed above the lifting frame 44. The two lifting structures 4 are connected to the lifting motor 46 via a gearbox and a conveyor shaft. The lifting motor 46 enables the lifting screw seat 42 in the two lifting structures 4 to rotate synchronously via the gearbox and conveyor shaft, thereby causing the threaded section on the lifting rod 43 to move vertically in the lifting screw seat 42.

[0020] Reference Figure 6 - Figure 9 A set of lifting frames 33 is welded to the front and rear ends of both sides of the top cover 32. The lifting structure 5 includes a fixed plate 51 fixed above the lifting frame 44. Two sets of symmetrically distributed linear sliders 52 are installed on the fixed plate 51. A linear track 53 is slidably installed on each linear slider 52. A movable plate 54 is fixed between the two linear tracks 53. A lifting block 55 is fixed above the movable plate 54 on the side close to the vehicle body 3. A drive cylinder 57 is fixed above the fixed plate 51. The push rod of the drive cylinder 57 is fixed below the movable plate 54. The lifting frame 33 has a positioning hole, and the lifting block 55 is fixed with a positioning pin. The lifting block 55 is aligned with the lifting frame 33. When the lifting structure 4 moves the lifting structure 5 to a specified height below, the push rod of the drive cylinder 57 extends, which will cause the lifting block 55 to be inserted into the lifting frame 33. Then, when the lifting structure 4 raises the lifting structure 5, the lifting block 55 will push the top cover 32 to move upward together. At the same time, the positioning pin will also be inserted into the positioning hole to prevent the top cover 32 from falling off.

[0021] Reference Figure 8 , Figure 9 The driving component 56 includes two offset sliders 563 that are respectively fixed below two linear tracks 53 in the lifting structure 5 by brackets. An offset track 561 is slidably installed between the two offset sliders 563. A driving roller 562 is rotatably installed at the center of the offset track 561 via a bearing. A return spring 564 is fixed at the center of the offset track 561. The other end of the return spring 564 is fixed to one of the offset sliders 563. The return spring 564 enables the offset track 561 to return to its original position after movement, that is, to ensure that the driving roller 562 is always in the middle below the two offset sliders 563, which facilitates the connection between the driving roller 562 and the locking structure 7.

[0022] Reference Figure 10 , Figure 11 The locking structure 7 includes a rotating pin 713 fixed to the side of the reducer 41 facing the vehicle body 3 by a bracket. A deflection plate 71 is rotatably mounted on the rotating pin 713 via a bearing. The rotating pin 713 is rotatably mounted at the center of the deflection plate 71, and a mounting groove is provided below the deflection plate 71. A torsion spring is installed in the mounting groove. One end of the torsion spring is fixed to the deflection plate 71, and the other end is fixed to the rotating pin 713. The torsion spring ensures that the deflection plate 71 remains in its original position when no external force is applied. Figure 12 At the position shown, two sets of symmetrically distributed support blocks 73 are fixed on the side of the reducer 41 facing the vehicle body 3. Unlocking blocks 72 are slidably installed on the support blocks 73, and the unlocking blocks 72 are slidably connected to the deflection plate 71.

[0023] Reference Figure 12 The deflection plate 71 is provided with a locking groove 711 and an unlocking groove 712. The distance between the unlocking groove 712 and the vehicle body 3 is greater than the distance between the locking groove 711 and the vehicle body 3. When the lifting block 55 is away from the lifting frame 33, that is, when the push rod of the drive cylinder 57 is in the retracted state, the lifting block 55 is not inserted into the lifting frame 33. At this time, the drive roller 562 in the drive component 56 is directly above the unlocking slide groove 712. When it is necessary to lift the upper cover 32 away from the lower seat 31, the lifting structure 4 causes the lifting structure 5 to move down to the lowest point. At this time, the drive roller 562 in the drive component 56 will be inserted into the unlocking groove 712. Then, the push rod of the drive cylinder 57 extends, causing the lifting block 55 to be inserted into the lifting frame 33. During this process, the drive roller 562 will slide in the unlocking groove 712 and push the deflection plate 71 to rotate around the rotating pin 713 as the axis. The front end of the deflection plate 71 will deflect towards the side of the vehicle body 3. At this time, the deflection plate 71 will push the front unlocking block 72 to move towards the side of the vehicle body 3 and push the screw sleeve 341 to rotate counterclockwise, thereby releasing the lock between the screw sleeve 341 and the positioning rod 311. Then, the lifting structure 4 causes the lifting structure 5 to rise, and the lifting structure 5 can drive the upper cover 32 to move upward away from the lower seat 31. When the lifting block 55 is inserted into the lifting frame 33, that is, when the push rod of the drive cylinder 57 is in the extended state, the lifting block 55 is inserted into the lifting frame 33, and at this time the drive roller 562 in the drive component 56 is directly above the unlocking slide groove 712. When it is necessary to press the upper cover 32 onto the lower seat 31, the lifting block 55 is already inserted into the lifting frame 33, and the upper cover 32 is in a suspended state. Then the lifting structure 4 moves the lifting structure 5 down to the bottom, and the upper cover 32 located on the multiple lifting blocks 55 will also move down together until the upper cover 32 is pressed onto the lower seat 31. When the upper cover 32 is pressed onto the lower seat 31, the drive roller 562 in the drive component 56 will be inserted into the locking groove 711. Then, the push rod of the drive cylinder 57 retracts, causing the lifting block 55 to be pulled out from the lifting frame 33. During this process, the drive roller 562 will slide in the locking groove 711 and push the deflection plate 71 to rotate around the axis of the rotating pin 713. The rear end of the deflection plate 71 will deflect towards the side of the vehicle body 3. At this time, the deflection plate 71 will push the rear unlocking block 72 to move towards the side of the vehicle body 3 and push the screw sleeve 341 to rotate clockwise, thereby locking the screw sleeve 341 with the positioning rod 311. Then, the lifting structure 4 will raise the lifting structure 5, so that the lifting structure 5 is at the top, and the torsion spring will also keep the deflection plate 71 in its original position.

[0024] The unlocking block 72 has a T-shaped structure and a straight groove 721 is provided on the unlocking block 72. A shaft roller 714 is rotatably mounted on the deflection plate 71 via a shaft pin. The shaft roller 714 is rolled and inserted into the straight groove 721. When the drive roller 562 is inserted into the unlocking groove 712 and the push rod of the drive cylinder 57 extends, the shaft roller 714 will push the front unlocking block 72 (i.e. the unlocking block 72 that is closer to the unlocking groove 712 and the locking groove 711) toward the push block 342 of the screw sleeve 341. That is, the front unlocking block 72 pushes the front push block 342, and the screw sleeve 341 rotates clockwise through the push block 342. The screw sleeve 341 will be threaded onto the positioning rod 311. When the drive roller 562 is inserted into the locking groove 711 and the push rod of the drive cylinder 57 retracts, the shaft roller 714 will push the rear unlocking block 72 toward the push block 342 of the screw sleeve 341. That is, the rear unlocking block 72 pushes the rear push block 342, and the push block 342 causes the screw sleeve 341 to rotate counterclockwise, and the screw sleeve 341 will release the threaded connection with the positioning rod 311.

[0025] A guide block 731 is fixed on the support block 73, and a guide groove 722 is provided on the unlocking block 72. The guide block 731 is slidably inserted into the guide groove 722 to guide the unlocking block 72 so that it can only move linearly left and right.

[0026] Working principle: In the initial state, the lifting structure 5 is at the top under the action of the lifting structure 4, and the push rod of the drive cylinder 57 in the lifting structure 5 is in the retracted state. At this time, the drive roller 562 in the drive component 56 is directly above the unlocking groove 712.

[0027] When the vehicle body 3 is above the base frame 1 and the upper cover 32 needs to be lifted away from the lower seat 31, firstly, the lifting motor 46 can make the lifting screw seat 42 in the two lifting structures 4 rotate synchronously in opposite directions through the gearbox and the conveyor shaft, thereby causing the threaded section on the lifting rod 43 to move downward in a straight line within the lifting screw seat 42, thereby causing the lifting structure 5 on the lifting frame 44 to move downward together. When the lifting structure 5 moves to the bottom, the drive roller 562 in the drive component 56 will be inserted into the unlocking groove 712. Then, the push rod of the drive cylinder 57 extends, causing the lifting block 55 to be inserted into the lifting frame 33. During this process, the drive roller 562 will slide in the unlocking groove 712 and push the deflection plate 71 to rotate around the rotating pin 713. The front end of the deflection plate 71 will deflect towards the side of the vehicle body 3. At this time, the deflection plate 71 will push the front unlocking block 72 to move towards the side of the vehicle body 3. That is, the front unlocking block 72 pushes the front push block 342 and pushes the screw sleeve 341 to rotate counterclockwise, thereby releasing the lock between the screw sleeve 341 and the positioning rod 311. Then, the lifting structure 4 causes the lifting structure 5 to rise, and the lifting structure 5 can drive the upper cover 32 to move upward away from the lower seat 31. After the upper cover 32 is lifted upwards and away from the lower base 31, the corresponding iron core can be placed inside the lower base 31.

[0028] After the iron core is placed, press the upper cover 32 back onto the lower base 31 and fix it in place. Specifically, the lifting structure 4 causes the lifting structure 5 to move down to the bottom, and the upper cover 32 located on the multiple lifting blocks 55 will also move down along with it until the upper cover 32 presses against the lower seat 31. When the upper cover 32 is pressed onto the lower seat 31, the drive roller 562 in the drive component 56 will be inserted into the locking groove 711. Then, the push rod of the drive cylinder 57 retracts, causing the lifting block 55 to be pulled out from the lifting frame 33. During this process, the drive roller 562 will slide in the locking groove 711 and push the deflection plate 71 to rotate around the axis of the rotating pin 713. The rear end of the deflection plate 71 will deflect towards the side of the vehicle body 3. At this time, the deflection plate 71 will push the rear unlocking block 72 to move towards the side of the vehicle body 3 and push the screw sleeve 341 to rotate clockwise, thereby locking the screw sleeve 341 with the positioning rod 311. Then, the lifting structure 4 will raise the lifting structure 5, so that the lifting structure 5 is at the top, and the torsion spring will also keep the deflection plate 71 in its original position, thus fixing the upper cover 32 above the lower seat 31.

[0029] After the upper cover 32 is fixed above the lower seat 31, the inside of the car body 3 is evacuated by a valve installed on the side of the upper cover 32, and then helium is filled into the inside of the car body 3 to protect the iron core. The iron core is moved to the heating section via the car body 3 through the conveying structure 2 and the conveying trolley 61 and heated to the temperature and constant temperature time required by the constant temperature curve. After that, the car body 3 is withdrawn and enters the cooling section for cooling. At this time, another car body 3 can carry out the heating process of the next set of products. This alternating operation improves efficiency and production capacity.

[0030] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this 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. Therefore, they should not be construed as limitations on this invention.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A crucible cart for atmosphere annealing of multi-chamber iron cores, characterized in that, The system includes a base frame (1), on which side frames (11) are symmetrically welded on the left and right sides. A square frame is welded to the top of the side frames (11). A conveying structure (2) is installed on the base frame (1). A car body (3) is placed on the conveying structure (2). The car body (3) includes a lower seat (31) for placing the iron core. A top cover (32) is fixed above the lower seat (31) by a locking member (34). A lifting structure (4) is installed on the inward side of each of the left and right side frames (11). The top of the lifting structure (4) is... Lifting structures (5) for lifting the top cover (32) are installed on both the front and rear sides of the end. A locking structure (7) for locking and unlocking the locking member (34) in the vehicle body (3) is installed on the lifting structure (4). A driving member (56) is installed on each lifting structure (5). The driving member (56) is used to drive the locking structure (7) to lock and unlock the locking member (34). An outer car track (6) is also installed on the front side of the base frame (1). A conveying trolley (61) is movably installed on the outer car track (6).

2. The crucible cart for atmosphere annealing of multi-chamber iron cores according to claim 1, characterized in that, The lower seat (31) is fixed with a plurality of positioning rods (311) arranged in a rectangular structure. The upper end of the positioning rod (311) is provided with a thread. The locking member (34) includes a rotating shaft seat (344) fixed on the upper cover (32). A sleeve seat (343) is mounted on the rotating shaft seat (344) and slides up and down. A threaded sleeve (341) is fixed on the upper part of the sleeve seat (343). Pushing blocks (342) are symmetrically welded on both sides of the threaded sleeve (341).

3. The crucible cart for atmosphere annealing of multi-chamber iron cores according to claim 2, characterized in that, The lifting structure (4) includes a reducer (41) fixed on the front and rear sides of the side frame (11) and a lifting rod (43). The two reducers (41) are driven by a transmission shaft (45). The output shaft of the reducer (41) is hollow at the top and bottom and fitted with a lifting screw seat (42). The lifting rod (43) is provided with a threaded section. The threaded section on the lifting rod (43) is threadedly connected to the lifting screw seat (42). A lifting frame (44) is fixed between the top ends of the two lifting rods (43). The lifting structure (5) is installed above the lifting frame (44). The two lifting structures (4) are connected to the lifting motor (46) via a gearbox and a conveyor shaft.

4. The crucible cart for atmosphere annealing of multi-chamber iron cores according to claim 3, characterized in that, A set of lifting frames (33) is welded to the front and rear ends of the left and right sides of the top cover (32). The lifting structure (5) includes a fixed plate (51) fixed above the lifting frame (44). Two sets of symmetrically distributed linear sliders (52) are installed on the fixed plate (51). A linear track (53) is slidably installed on each linear slider (52). A moving plate (54) is fixed between the two linear tracks (53). A lifting block (55) is fixed on the side of the moving plate (54) near the vehicle body (3). A drive cylinder (57) is fixed above the fixed plate (51). The push rod of the drive cylinder (57) is fixed below the moving plate (54).

5. A crucible cart for atmosphere annealing of multi-chamber iron cores according to claim 4, characterized in that, The drive unit (56) includes two offset sliders (563) that are respectively fixed below two linear tracks (53) in the lifting structure (5) by brackets. An offset track (561) is slidably installed between the two offset sliders (563). A drive roller (562) is rotatably installed at the center of the offset track (561) via a bearing. A return spring (564) is fixed at the center of the offset track (561). The other end of the return spring (564) is fixed to one of the offset sliders (563).

6. A crucible cart for atmosphere annealing of multi-chamber iron cores according to claim 5, characterized in that, The locking structure (7) includes a rotating pin (713) fixed to the side of the reducer (41) facing the vehicle body (3) by a bracket. A deflection plate (71) is rotatably mounted on the rotating pin (713) by a bearing. Two sets of symmetrically distributed support blocks (73) are fixed on the side of the reducer (41) facing the vehicle body (3). Unlocking blocks (72) are slidably mounted on the support blocks (73) to the left and right. The unlocking blocks (72) are slidably connected to the deflection plate (71).

7. A crucible cart for atmosphere annealing of multi-chamber iron cores according to claim 1, characterized in that, The deflection plate (71) is provided with a locking groove (711) and an unlocking groove (712). The distance between the unlocking groove (712) and the vehicle body (3) is greater than the distance between the locking groove (711) and the vehicle body (3). When the lifting block (55) moves away from the lifting frame (33), the drive roller (562) in the drive unit (56) is directly above the unlocking groove (712); When the lifting block (55) is inserted into the lifting frame (33), the drive roller (562) in the drive unit (56) is directly above the unlocking groove (712).

8. A crucible cart for atmosphere annealing of multi-chamber iron cores according to claim 8, characterized in that, The unlocking block (72) has a T-shaped structure and a straight groove (721) is provided on the unlocking block (72). A shaft roller (714) is rotatably installed on the deflection plate (71) through a shaft pin. The shaft roller (714) is rolled and inserted into the straight groove (721).

9. A crucible cart for atmosphere annealing of multi-chamber iron cores according to claim 9, characterized in that, A guide block (731) is fixed on the support block (73), and a guide groove (722) is provided on the unlocking block (72). The guide block (731) is slidably inserted into the guide groove (722).

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