Multi-chamber iron core atmosphere annealing device

Abstract

The invention discloses a multi-chamber iron core atmosphere annealing device, and relates to the technical field of heat treatment process and material science, the multi-chamber iron core atmosphere annealing device comprises an uncovering frame, the inner walls of the two sides of the uncovering frame are fixedly connected with side plates, the interior of the uncovering frame is slidably connected with a crucible car lower frame through a transmission belt, and a crucible car upper cover is arranged above the crucible car lower frame; a bottom pressing frame is fixedly connected to the surface of the upper end of the crucible trolley lower frame, a top pressing frame is fixedly connected to the surface of the lower end of the crucible trolley upper cover, and an extending clamping groove is formed in the upper surface of the bottom pressing frame. The problem that the efficiency is low when bolts are manually tightened one by one is thoroughly solved, the sealing consistency is ensured, the unlocking operation risk caused by human negligence is fundamentally eradicated through the automatic pressing mode, and therefore the strict requirements for full automation and high safety of a modern multi-cavity annealing device are met.

Description

Technical Field

[0001] This invention relates to the fields of heat treatment processes and materials science and technology, specifically to a multi-chamber iron core atmosphere annealing apparatus. Background Technology

[0002] Multi-chamber core atmosphere annealing apparatus is a key heat treatment device for high-performance soft magnetic materials or semiconductor silicon steel. Its core design lies in decomposing the complete annealing process into multiple isolated processing chambers with independently controllable atmosphere and temperature. These chambers are connected by a transfer mechanism with vacuum or atmosphere lock, allowing the ring-shaped core workpiece to continuously and sequentially pass through each process stage in a controlled protective atmosphere or vacuum. This achieves precise, efficient, and consistent optimization of the core material's microstructure and final magnetic properties.

[0003] The working process of the multi-chamber iron core atmosphere annealing apparatus begins in the opening section, where the iron core is placed inside the crucible car, and the crucible car is sealed inside the opening section. The annular iron core is first evacuated and filled with protective gas to replace the air. Then, the iron core enters the heating section under the drive of the conveying mechanism, and finally cools down to a safe temperature at a controllable rate in the cooling chamber. Throughout the process, each chamber maintains a specific protective atmosphere, completing the entire oxidation-free, low-stress, and highly optimized magnetic annealing process.

[0004] During the sealing process of the crucible car, operators need to use tools to manually tighten multiple bolts to seal or loosen the upper and lower covers of the crucible car. This operation is time-consuming and labor-intensive, and it relies entirely on the experience and physical strength of the workers. The tightness cannot be quantified, and it is very easy for individual bolts to be not tightened or over-tightened, resulting in poor sealing between the upper and lower covers of the crucible car or stripped threads. This can lead to atmospheric contamination caused by an incomplete seal of the crucible car during heating or transportation. Summary of the Invention

[0005] Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a multi-chamber iron core atmosphere annealing apparatus, which solves the problems mentioned in the background art.

[0006] Technical solution To achieve the above objectives, the present invention provides the following technical solution: a multi-chamber iron core atmosphere annealing device, comprising an opening frame, side plates fixedly connected to the inner walls of both sides of the opening frame, a crucible cart lower frame slidably connected to the inside of the opening frame via a transmission belt, a crucible cart upper cover disposed above the crucible cart lower frame, a bottom pressing frame fixedly connected to the upper surface of the crucible cart lower frame, a top pressing frame fixedly connected to the lower surface of the crucible cart upper cover, an extension slot provided on the upper surface of the bottom pressing frame, and the top pressing frame extending into the extension slot; The surface of the lower frame of the crucible cart is provided with a pressing mechanism to ensure a tight connection between the lower frame of the crucible cart and the upper cover of the crucible cart. Below the pressing mechanism is an adjustment mechanism to control the connection state between the lower frame of the crucible cart and the upper cover of the crucible cart. Below the pressing mechanism is a limiting mechanism to provide power to the pressing mechanism. The surface of the side plate is provided with a lifting mechanism to drive the upper cover of the crucible cart to rise.

[0007] Preferably, the limiting mechanism includes an embedded sliding groove formed on the surface of the lower frame of the crucible cart, an adjusting sliding frame is slidably connected inside the embedded sliding groove, and multiple limiting springs are arranged in a linear array on both sides of the upper inner wall of the embedded sliding groove. The multiple limiting springs are fixedly connected to the adjusting sliding frame, and multiple lifting blocks are arranged in a linear array on both sides of the upper surface of the adjusting sliding frame.

[0008] Preferably, the pressing mechanism includes multiple adjusting and fixing frames that are linearly arrayed and fixedly connected to the lower surfaces of both sides of the bottom pressing frame. Multiple limiting adjustment slots are linearly arrayed on both sides of the bottom pressing frame, and these limiting adjustment slots communicate with adjacent adjusting and fixing frames. Connecting sliders are rotatably connected to the upper surfaces of multiple lifting blocks via rotation. Limiting pins are fixedly connected to the inner walls of the adjusting and fixing frames. A closing groove is formed on the surface of the connecting slider, and the limiting pin extends into the closing groove. A pressing block is fixedly connected to the end of the connecting slider away from the lifting block. Multiple locking slots are linearly arrayed on both sides of the top pressing frame, and the pressing block extends into the locking slot adjacent to it.

[0009] Preferably, the lifting mechanism includes a lift fixedly connected to the upper surface of the side plate, the lift having an internal transmission connection of a lead screw, a drive motor fixedly connected to the upper surface of the side plate, the output shaft of the drive motor being fixedly connected to the output shaft of the lift, and a lifting slide frame fixedly connected to the upper surface of the lead screw.

[0010] Preferably, the lifting slide frame is slidably connected to an extension block, and an electric telescopic rod is fixedly connected to the side of the lifting slide frame away from the crucible cart cover. The output shaft of the electric telescopic rod extends into the interior of the lifting slide frame and is fixedly connected to the extension block. Lifting frames are fixedly connected to both sides of the crucible cart cover, and a transmission mechanism is provided on the side of the side plate near the crucible cart cover.

[0011] Preferably, the transmission mechanism includes two symmetrically arranged transverse guide grooves on the side surface of the side plate near the crucible cart cover. A transverse guide block is slidably connected inside each transverse guide groove. A transverse spring is fixedly connected to the inner wall of each transverse guide groove. The transverse spring is fixedly connected to the adjacent transverse guide block. A transmission slider is fixedly connected to one end of each transverse guide block. An inclined surface is provided at the lower end of the transmission slider near the lead screw. A transmission slide plate is fixedly connected to the lower end of the lead screw. A drive slide plate is fixedly connected to the lower end of the transmission slide plate. The transmission slider is located on the sliding path of the drive slide plate. Pressure sliders are fixedly connected to the side of the transmission slider near the crucible cart cover. An inclined surface is provided above the ends of the two pressure sliders that are far apart from each other.

[0012] Preferably, the adjustment mechanism includes two vertical guide grooves symmetrically opened on the side surface of the side plate near the crucible cart cover. Each vertical guide groove is slidably connected to a vertical guide block. A vertical spring is fixedly connected to the inner wall of the vertical guide groove. A lifting slider is fixedly connected to the end of the vertical guide block away from the side plate.

[0013] Preferably, the lifting slider is L-shaped, and an abutment wheel is rotatably connected to the lower end of the vertical portion of the lifting slider. The abutment wheel is located on the sliding path of the inclined surface of the adjacent pressure slider, and the adjusting slide frame is located on the sliding path of the horizontal portion of the lifting slider.

[0014] Beneficial effects The multi-chamber iron core atmosphere annealing apparatus provided by the present invention has the following beneficial effects: 1. An automatic pressing mechanism is used to seal the lower frame of the crucible cart and the upper cover of the crucible cart. It can automatically complete the uniform pressing and sealing within a few seconds, completely avoiding the inefficiency of manually tightening each bolt one by one, ensuring the consistency of the seal. Moreover, the automatic pressing method fundamentally eliminates the risk of operation due to human negligence, thus meeting the stringent requirements of modern multi-chamber annealing equipment for high cycle time, full automation and high safety.

[0015] 2. The connection between the lower frame of the crucible car and the upper cover can only be released when the boiler car is inside the opening section and before the lifting mechanism starts to slide the upper cover of the crucible car. This design fundamentally eliminates the risk of accidental unlocking in the wrong position, such as in the running channel, or in the wrong state, such as when the upper cover is not supported. It ensures that the upper cover will not fall off or tilt during the transfer process due to vehicle shaking, inertia, or misoperation, thereby protecting the expensive high-precision sealing surface from impact damage. At the same time, it eliminates the safety hazard of heavy objects falling, greatly improving the reliability of equipment operation and the safety of automated processes. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the crucible cart cover connection structure of the present invention; Figure 3 For the present invention Figure 2 A magnified view of part A in the image; Figure 4 This is a schematic diagram of the adjustable sliding frame structure of the present invention; Figure 5 This is a schematic diagram of the front structure of the lower frame of the crucible cart of the present invention; Figure 6 For the present invention Figure 5 A magnified view of part B in the image; Figure 7 This is a schematic diagram of the lower frame connection structure of the crucible cart according to the present invention; Figure 8 This is a schematic diagram of the elevator connection structure of the present invention; Figure 9 This is a schematic diagram of the side plate connection structure of the present invention; Figure 10 For the present invention Figure 9 A magnified view of part C; Figure 11 This is a schematic diagram of the transmission slide plate connection structure of the present invention.

[0017] The labels in the diagram represent: 1. Opening frame; 11. Side plate; 12. Crucible cart lower frame; 13. Crucible cart upper cover; 2. Top pressing frame; 21. Bottom pressing frame; 23. Extension slot; 3. Embedded slide; 31. Adjusting slide; 32. Limiting spring; 33. Lifting block; 4. Adjusting and fixing frame; 41. Limiting adjustment slot; 42. Connecting slider; 43. Approaching slide; 44. Limiting retaining shaft; 45. Retaining slot; 46. Pressing block; 5. Drive motor; 51. Lifting machine; 52. Lead screw; 53. Lifting frame; 54. Lifting slide frame; 55. Electric telescopic rod; 56. Extension block; 6. Drive slide plate; 61. Horizontal guide groove; 62. Horizontal spring; 63. Horizontal guide block; 64. Drive slider; 65. Pressure slider; 66. Drive slide plate; 7. Lifting slider; 71. Contact wheel; 72. Vertical guide groove; 73. Vertical guide block; 74. Vertical spring. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] refer to Figures 1 to 11 A multi-chamber iron core atmosphere annealing apparatus according to a preferred embodiment of the present invention will be described in detail below, including a cover frame 1, side plates 11 fixedly connected to the inner walls of both sides of the cover frame 1, a crucible cart lower frame 12 slidably connected to the inside of the cover frame 1 via a transmission belt, a crucible cart upper cover 13 disposed above the crucible cart lower frame 12, a bottom pressing frame 21 fixedly connected to the upper surface of the crucible cart lower frame 12, a top pressing frame 2 fixedly connected to the lower surface of the crucible cart upper cover 13, an extension slot 23 provided on the upper surface of the bottom pressing frame 21, and the top pressing frame 2 extending into the interior of the extension slot 23. Initially, the crucible cart lower frame 12 and the crucible cart upper cover 13 are in a fitted state. The surface of the crucible cart lower frame 12 is provided with a pressing mechanism to ensure a tight connection between the crucible cart lower frame 12 and the crucible cart upper cover 13. Below the pressing mechanism is an adjustment mechanism to control the connection state between the crucible cart lower frame 12 and the crucible cart upper cover 13. Depending on the position of the crucible cart lower frame 12 and the operation performed, the pressing mechanism is driven by the adjustment mechanism to control the connection state between the crucible cart lower frame 12 and the crucible cart upper cover 13. Below the pressing mechanism is a limiting mechanism to provide power to the pressing mechanism. The surface of the side plate 11 is provided with a lifting mechanism to drive the crucible cart upper cover 13 to rise.

[0020] 1. When the iron core is annealed, the crucible car is transported to the position of the opening frame 1 by the transport mechanism on the outer lane surface, and extends into the interior of the opening frame 1 by the internal conveyor belt. The lifting mechanism drives the upper cover 13 of the crucible car to rise, so that the originally sealed crucible car is opened, thereby placing the iron core inside the lower frame 12 of the crucible car. Then, the lifting mechanism drives the upper cover 13 of the crucible car to slide down, so that the crucible car is sealed again. 2. The crucible car containing the iron core returns to the outer lane via the internal conveyor belt of the opening frame 1, and is brought into the heating section by the surface transport mechanism of the outer lane. The heating section is then sealed. The iron core is energized and magnetized inside the heating section to heat it to the required temperature. 3. After the iron core is heated to the required level, the heating section is opened, and the crucible car containing the iron core returns to the outer lane through the internal conveyor belt of the heating section. The heated crucible car is then transported into the cooling section through the surface transport mechanism of the outer lane. The stability of the iron core inside the crucible car is reduced by air cooling, thereby avoiding the generation of new stress due to excessive thermal stress or the iron core becoming brittle. 4. After cooling, the crucible car returns to the inside of the opening frame 1 under the drive of the outer lane surface transport mechanism, and the opening operation is carried out again to take out the annealed iron core and load the unannealed iron core.

[0021] like Figure 3 In the middle, the limiting mechanism includes an embedded slide groove 3 opened on the surface of the lower frame 12 of the crucible cart. An adjusting slide frame 31 is slidably connected inside the embedded slide groove 3. Multiple limiting springs 32 are arranged in a linear array on both sides of the upper inner wall of the embedded slide groove 3. The multiple limiting springs 32 are fixedly connected to the adjusting slide frame 31. The limiting springs 32 apply elastic force to the adjusting slide frame 31, and the adjusting slide frame 31 slides stably up and down along the embedded slide groove 3. Multiple lifting blocks 33 are arranged in a linear array on both sides of the upper surface of the adjusting slide frame 31. Initially, the limiting springs 32 are in the normal state, and the adjusting slide frame 31 is located inside the lower end of the embedded slide groove 3.

[0022] like Figure 5 and Figure 6In the middle, the pressing mechanism includes multiple adjusting and fixing frames 4, which are linearly arrayed and fixedly connected to the lower surfaces of both sides of the bottom pressing frame 21. Multiple limiting adjustment grooves 41 are linearly arrayed on both sides of the bottom pressing frame 21, and the limiting adjustment grooves 41 are connected to adjacent adjusting and fixing frames 4. The upper surfaces of multiple lifting blocks 33 are rotatably connected to connecting sliders 42, which are V-shaped. Limiting retaining shafts 44 are fixedly connected to the inner walls of the adjusting and fixing frames 4. The surface of the connecting sliders 42 has a closing groove 43. The limiting retaining shafts 44... 4. Extending into the interior of the sliding groove 43, the limiting pin 44 is located inside the sliding groove 43. Power is provided by the lifting block 33, which drives the connecting slider 42 to slide along the surface of the limiting pin 44. A pressing block 46 is fixedly connected to the end of the connecting slider 42 away from the lifting block 33. Multiple locking slots 45 are linearly arrayed on both sides of the top pressing frame 2. The pressing block 46 extends into the locking slot 45 close to it. Initially, the limiting pin 44 is located inside the upper end of the sliding groove 43, and the pressing block 46 is located inside the locking slot 45.

[0023] like Figure 7 In the lifting mechanism, there is a lifting machine 51 fixedly connected to the upper surface of the side plate 11. A lead screw 52 is internally connected to the lifting machine 51. A drive motor 5 is fixedly connected to the upper surface of the side plate 11. The output shaft of the drive motor 5 is fixedly connected to the output shaft of the lifting machine 51. When the drive motor 5 starts, its output shaft drives the worm gear inside the lifting machine 51, which in turn drives the nut that cooperates with the lead screw 51 to rotate. The rotation of the nut forces the lead screw 51 to produce a linear displacement along its axis under the helical transmission of the threaded pair, thereby achieving the lifting action. A lifting slide frame 54 is fixedly connected to the upper surface of the lead screw 52. An extension block 56 is slidably connected inside the lifting slide frame 54. An electric telescopic rod 55 is fixedly connected to the side of the frame 54 away from the crucible cart cover 13. The output shaft of the electric telescopic rod 55 extends into the interior of the lifting slide frame 54 and is fixedly connected to the extension block 56. Lifting frames 53 are fixedly connected to both sides of the crucible cart cover 13. A transmission mechanism is provided on the side plate 11 near the crucible cart cover 13. The lifting frame 53 is a U-shaped opening facing downwards. The extension block 56 extends into the interior of the lifting frame 53, thereby providing an upward thrust to the lifting frame 53 through the extension block 56, which in turn drives the crucible cart cover 13 to slide upwards synchronously. Initially, the extension block 56 retracts into the interior of the lifting slide frame 54, and the lifting slide frame 54 is located below the lifting frame 53.

[0024] After completing the heating and cooling process, the crucible cart enters the interior of the opening frame 1 under the drive of the transmission belt. When the crucible cart is opened, the output shaft of the transmission motor 5 drives the output shaft of the lifting mechanism 51 to rotate, which in turn drives the lead screw 52 to slide upward through the lifting mechanism 51, thereby driving the lifting slide frame 54 to slide upward synchronously and move closer to the height of the lifting clamp frame 53. During this process, the output shaft of the electric telescopic rod 55 pushes the extension clamp 56 to slide towards the upper cover 13 of the crucible cart, pushing the extension clamp 56 to extend into the interior of the lifting clamp frame 53 until the extension clamp 56 contacts the lifting clamp frame 53. As the lead screws 52 on both sides continue to rise, they push the upper cover 13 of the crucible cart to slide upward, thereby opening the crucible cart.

[0025] like Figure 10 and Figure 11 In the transmission mechanism, there are two transverse guide grooves 61 symmetrically opened on the surface of the side plate 11 near the crucible cart cover 13. A transverse guide block 63 is slidably connected inside each transverse guide groove 61. A transverse spring 62 is fixedly connected to the inner wall of the transverse guide groove 61. The transverse spring 62 is fixedly connected to the adjacent transverse guide block 63. A transmission slider 64 is fixedly connected to one end of the transverse guide block 63. An inclined surface is provided at the lower end of the transmission slider 64 near the lead screw 52. The transverse spring 62 is located on the side of the transverse guide block 63 away from the lead screw 52. The transverse spring 62 applies a spring force to the transverse guide block 63, which then moves through the transverse guide groove. The internal sliding of 61 drives the transmission slider 64 to slide stably horizontally along the transverse guide groove 61. The lower end of the lead screw 52 is fixedly connected to the transmission slide plate 6, and the lower end of the transmission slide plate 6 is fixedly connected to the drive slide plate 66. The transmission slider 64 is located on the sliding path of the drive slide plate 66. The side of the transmission slider 64 near the crucible cart cover 13 is fixedly connected to the pressure slider 65. The two pressure sliders 65 are provided with inclined surfaces above the ends of the two pressure sliders that are far apart from each other. Initially, the two transverse guide blocks 63 are located inside the transverse guide groove 61 near the end of the lead screw 52. At this time, the transverse spring 62 is in normal state, and the drive slide plate 66 is located below the inclined surface of the transmission slider 64.

[0026] As the lead screw 52 slides upward under the drive of the lifting platform 51, it drives the drive slide plate 66 to slide upward synchronously through the transmission slide plate 6. The inner walls on both sides of the drive slide plate 66 then provide a thrust to the inclined surface of the transmission slider 64, thereby pushing the two transmission sliders 64 away from each other, thus driving the two pressure sliders 65 to slide synchronously. At this time, the transverse spring 62 is compressed under the push of the transverse guide block 63.

[0027] like Figure 11The adjustment mechanism includes two vertical guide grooves 72 symmetrically opened on the side surface of the side plate 11 near the crucible cart cover 13. Each vertical guide groove 72 is slidably connected to a vertical guide block 73. A vertical spring 74 is fixedly connected to the inner wall of the vertical guide groove 72. The vertical spring 74 is located above the vertical guide block 73 and applies elastic force to the vertical guide block 73. A lifting slider 7 is fixedly connected to the end of the vertical guide block 73 away from the side plate 11.

[0028] like Figure 11 In the middle, the lifting slider 7 is L-shaped. The lower end of the vertical part of the lifting slider 7 is rotatably connected to the abutment wheel 71. The abutment wheel 71 is located on the sliding path of the inclined surface of the pressure slider 65. The adjusting slide frame 31 is located on the sliding path of the horizontal part of the lifting slider 7 to ensure that when the lifting slider 7 rises, it can drive the adjusting slide frame 31 to rise synchronously. Initially, the vertical guide block 73 is located inside the lower end of the vertical guide groove 72. At this time, the vertical spring 74 is in the normal state.

[0029] As the transmission sliders 64 move away from each other, they cause the two pressure sliders 65 to move away from each other. The inclined surface of the pressure sliders 65 gives the contact wheel 71 an upward push, which in turn pushes the lifting slider 7 to slide upward along the vertical guide groove 72. The lifting slider 7 pushes the adjusting slide frame 31 to slide upward synchronously through the horizontal part, thereby releasing the connection between the crucible cart lower frame 12 and the crucible cart upper cover 13. When the boiler car is inside the open section and the lifting mechanism begins to slide the crucible car cover 13, the connection between the crucible car lower frame 12 and the crucible car cover 13 is first released through the adjustment mechanism. Then, the crucible car cover 13 is slid upward, thereby releasing the connection between the crucible car lower frame 12 and the crucible car cover 13. This design fundamentally eliminates the risk of accidental unlocking in the wrong position, such as in the running channel, and in the wrong state, such as when the cover is not supported. It ensures that the cover will not fall off or tilt during the transfer process due to vehicle shaking, inertia, or misoperation, thus protecting the expensive high-precision sealing surface from impact damage. At the same time, it eliminates the safety hazard of heavy objects falling, greatly improving the reliability of equipment operation and the safety of automated processes.

[0030] When the lower frame 12 of the crucible cart is reconnected to the upper cover 13 of the crucible cart, and the adjusting slide frame 31 loses the resistance of the lifting slider 7, the adjusting slide frame 31 slides downward under the push of the limiting spring 32, thereby driving the lifting block 33 to slide downward synchronously. The downward sliding of the lifting block 33 gives a downward pulling force to one end of the connecting slider 42, and under the restriction of the limiting pin 44, the connecting slider 42 slides along the surface of the limiting pin 44, and gradually swings towards the upper cover 13 of the crucible cart by approaching the inner wall of the inclined surface of the sliding groove 43. When the limiting pin 44 is reached... When the locking shaft 44 is located at the junction of the sliding groove 43, the inclined connecting slider 42 becomes vertical, and the pressing block 46 becomes vertical under the action of the connecting slider 42, and is located directly above the locking groove 45. As the lifting block 33 continues to slide down, it drives the vertical connecting slider 42 to slide down synchronously, thereby driving the pressing block 46 to extend into the locking groove 45, thereby pressing the upper cover 13 of the crucible cart onto the surface of the lower frame 12 of the crucible cart, and limiting this state by the limiting spring 32. An automatic pressing mechanism is used to seal the lower frame 12 of the crucible cart and the upper cover 13 of the crucible cart. It can automatically complete the uniform pressing and sealing within a few seconds, completely avoiding the inefficiency of manually tightening each bolt one by one, ensuring the consistency of the seal. Moreover, the automatic pressing method fundamentally eliminates the risk of operation due to human negligence, thus meeting the stringent requirements of modern multi-chamber annealing equipment for high cycle time, full automation and high safety.

[0031] Working principle: The crucible cart, having completed the heating and cooling process, enters the interior of the opening frame 1 under the drive of the transmission belt. When the crucible cart is opened, the output shaft of the transmission motor 5 drives the output shaft of the lifting mechanism 51 to rotate, which in turn drives the lead screw 52 to slide upward, thereby driving the lifting slide frame 54 to slide upward synchronously and move closer to the height of the lifting clamp frame 53. During this process, the output shaft of the electric telescopic rod 55 pushes the extension block 56 to slide towards the upper cover 13 of the crucible cart, pushing the extension block 56 to extend into the interior of the lifting clamp frame 53 until the extension block 56 contacts the lifting clamp frame 53, and as the lead screws 52 on both sides continue to rise; As the lead screw 52 slides upward under the drive of the elevator 51, it drives the drive slide plate 66 to slide upward synchronously through the transmission slide plate 6. The inner walls on both sides of the drive slide plate 66 then provide a thrust to the inclined surface of the transmission slider 64, thereby pushing the two transmission sliders 64 away from each other. The two transmission sliders 64 drive the two pressure sliders 65 to slide synchronously. At this time, the transverse spring 62 is compressed under the push of the transverse guide block 63. As the transmission sliders 64 move away from each other, they cause the two pressure sliders 65 to move away from each other. The inclined surface of the pressure sliders 65 gives the contact wheel 71 an upward push, which in turn pushes the lifting slider 7 to slide upward along the vertical guide groove 72. The lifting slider 7 pushes the adjusting slide frame 31 to slide upward synchronously through the horizontal part, thereby releasing the connection between the crucible cart lower frame 12 and the crucible cart upper cover 13. When the boiler car is inside the open section and the lifting mechanism begins to slide the crucible car cover 13, the connection between the crucible car lower frame 12 and the crucible car cover 13 is first released through the adjustment mechanism. Then, the crucible car cover 13 is slid upward, thereby releasing the connection between the crucible car lower frame 12 and the crucible car cover 13. This design fundamentally eliminates the risk of accidental unlocking in the wrong position, such as in the running channel, and in the wrong state, such as when the cover is not supported. It ensures that the cover will not fall off or tilt during the transfer process due to vehicle shaking, inertia, or misoperation, thus protecting the expensive high-precision sealing surface from impact damage. At the same time, it eliminates the safety hazard of heavy objects falling, greatly improving the reliability of equipment operation and the safety of automated processes.

[0032] When the lower frame 12 of the crucible cart is reconnected to the upper cover 13 of the crucible cart, and the adjusting slide frame 31 loses the resistance of the lifting slider 7, the adjusting slide frame 31 slides downward under the push of the limiting spring 32, thereby driving the lifting block 33 to slide downward synchronously. The downward sliding of the lifting block 33 gives a downward pulling force to one end of the connecting slider 42, and under the restriction of the limiting pin 44, the connecting slider 42 slides along the surface of the limiting pin 44, and gradually swings towards the upper cover 13 of the crucible cart by approaching the inner wall of the inclined surface of the sliding groove 43. When the limiting pin 44 is reached... When the locking shaft 44 is located at the junction of the sliding groove 43, the inclined connecting slider 42 becomes vertical, and the pressing block 46 becomes vertical under the action of the connecting slider 42, and is located directly above the locking groove 45. As the lifting block 33 continues to slide down, it drives the vertical connecting slider 42 to slide down synchronously, thereby driving the pressing block 46 to extend into the locking groove 45, thereby pressing the upper cover 13 of the crucible cart onto the surface of the lower frame 12 of the crucible cart, and limiting this state by the limiting spring 32. An automatic pressing mechanism is used to seal the lower frame 12 of the crucible cart and the upper cover 13 of the crucible cart. It can automatically complete the uniform pressing and sealing within a few seconds, completely avoiding the inefficiency of manually tightening each bolt one by one, ensuring the consistency of the seal. Moreover, the automatic pressing method fundamentally eliminates the risk of operation due to human negligence, thus meeting the stringent requirements of modern multi-chamber annealing equipment for high cycle time, full automation and high safety.

Claims

1. A multi-chamber iron core atmosphere annealing apparatus, comprising a cover frame (1), characterized in that: Side plates (11) are fixedly connected to the inner walls of both sides of the opening frame (1). The interior of the opening frame (1) is slidably connected to the lower frame of the crucible cart (12) via a transmission belt. The upper cover of the crucible cart (13) is provided above the lower frame of the crucible cart (12). The upper surface of the lower frame of the crucible cart (12) is fixedly connected to the bottom pressing frame (21). The lower surface of the upper cover of the crucible cart (13) is fixedly connected to the top pressing frame (2). The upper surface of the bottom pressing frame (21) is provided with an extension slot (23). The top pressing frame (2) extends into the interior of the extension slot (23). The surface of the crucible cart lower frame (12) is provided with a pressing mechanism to ensure a tight connection between the crucible cart lower frame (12) and the crucible cart upper cover (13). Below the pressing mechanism is an adjustment mechanism to control the connection state between the crucible cart lower frame (12) and the crucible cart upper cover (13). Below the pressing mechanism is a limiting mechanism to provide power to the pressing mechanism. The surface of the side plate (11) is provided with a lifting mechanism to drive the crucible cart upper cover (13) to rise.

2. The multi-chamber iron core atmosphere annealing apparatus according to claim 1, characterized in that: The limiting mechanism includes an embedded slide groove (3) on the surface of the crucible cart lower frame (12). An adjusting slide frame (31) is slidably connected inside the embedded slide groove (3). Multiple limiting springs (32) are arranged in a linear array on both sides of the upper inner wall of the embedded slide groove (3). The multiple limiting springs (32) are fixedly connected to the adjusting slide frame (31). Multiple lifting blocks (33) are arranged in a linear array on both sides of the upper surface of the adjusting slide frame (31).

3. The multi-chamber iron core atmosphere annealing apparatus according to claim 2, characterized in that: The pressing mechanism includes multiple adjusting and fixing frames (4) that are linearly arrayed and fixedly connected to the lower surfaces of both sides of the bottom pressing frame (21). Multiple limiting adjustment grooves (41) are linearly arrayed on both sides of the bottom pressing frame (21). The limiting adjustment grooves (41) are connected to the adjacent adjusting and fixing frames (4). The upper surfaces of multiple lifting blocks (33) are rotatably connected to connecting sliders (42) by rotation. The inner wall of the adjusting and fixing frame (4) is fixedly connected to a limiting pin (44). The surface of the connecting slider (42) is provided with a closing groove (43). The limiting pin (44) extends into the interior of the closing groove (43). The end of the connecting slider (42) away from the lifting block (33) is fixedly connected to a pressing block (46). Multiple locking grooves (45) are linearly arrayed on both sides of the top pressing frame (2). The pressing block (46) extends into the interior of the locking groove (45) adjacent to it.

4. The multi-chamber iron core atmosphere annealing apparatus according to claim 3, characterized in that: The lifting mechanism includes a lift (51) fixedly connected to the upper surface of the side plate (11). The lift (51) is internally connected to a lead screw (52). The upper surface of the side plate (11) is fixedly connected to a drive motor (5). The output shaft of the drive motor (5) is fixedly connected to the output shaft of the lift (51). The upper surface of the lead screw (52) is fixedly connected to a lifting slide frame (54).

5. The multi-chamber iron core atmosphere annealing apparatus according to claim 4, characterized in that: An extension block (56) is slidably connected inside the lifting slide frame (54). An electric telescopic rod (55) is fixedly connected to the side of the lifting slide frame (54) away from the crucible cart cover (13). The output shaft of the electric telescopic rod (55) extends into the interior of the lifting slide frame (54) and is fixedly connected to the extension block (56). Lifting frames (53) are fixedly connected to both sides of the crucible cart cover (13). A transmission mechanism is provided on the side plate (11) near the crucible cart cover (13).

6. The multi-chamber iron core atmosphere annealing apparatus according to claim 5, characterized in that: The transmission mechanism includes two transverse guide grooves (61) symmetrically opened on the side surface of the side plate (11) near the crucible cart cover (13). Transverse guide blocks (63) are slidably connected inside the transverse guide grooves (61). A transverse spring (62) is fixedly connected to the inner wall of the transverse guide grooves (61). The transverse spring (62) is fixedly connected to the adjacent transverse guide block (63). A transmission slider (64) is fixedly connected to one end of the transverse guide block (63). An inclined surface is provided on the side of the lower end of the transmission slider (64) near the lead screw (52). A transmission slide plate (6) is fixedly connected to the lower end of the lead screw (52). A drive slide plate (66) is fixedly connected to the lower end of the transmission slide plate (6). The transmission slider (64) is located on the sliding path of the drive slide plate (66). A pressure slider (65) is fixedly connected to the side of the transmission slider (64) near the crucible cart cover (13). An inclined surface is provided above the ends of the two pressure sliders (65) that are far apart from each other.

7. The multi-chamber iron core atmosphere annealing apparatus according to claim 2, characterized in that: The adjustment mechanism includes two vertical guide grooves (72) symmetrically opened on the side surface of the side plate (11) near the crucible cart cover (13). Each vertical guide groove (72) is slidably connected to a vertical guide block (73). A vertical spring (74) is fixedly connected to the inner wall of the vertical guide groove (72). A lifting slider (7) is fixedly connected to the end of the vertical guide block (73) away from the side plate (11).

8. The multi-chamber iron core atmosphere annealing apparatus according to claim 7, characterized in that: The lifting slider (7) is L-shaped. The lower end of the vertical part of the lifting slider (7) is rotatably connected to an abutment wheel (71). The abutment wheel (71) is located on the sliding path of the inclined surface of the adjacent pressure slider (65). The adjusting slide frame (31) is located on the sliding path of the horizontal part of the lifting slider (7).

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