A cooling device for small castings

Abstract

The present application relates to the technical field of casting cooling, and discloses a cooling device for small castings, which comprises a base, support vertical plates arranged at the two ends of the base, transmission wheels rotatably installed at the ends of the support vertical plates, a conveying belt arranged between the transmission wheels, the surface of the conveying belt carrying castings moving along with it, a workpiece positioning mechanism and an atomization cooling mechanism; the atomization cooling mechanism is symmetrically arranged at the two sides of the base and comprises a support frame fixedly connected with the base, a rotating shaft rotatably connected with the end of the support frame, and a push rod arranged on the side of the rotating shaft close to the base and synchronously rotating with the rotating shaft; when the push rod abuts against the workpiece positioning mechanism, the rotating shaft swings synchronously with the workpiece positioning mechanism. The present application converts the movement of the castings into the adaptive deflection of the atomization nozzles through the push rod, so that the atomization nozzles can comprehensively and uniformly spray and cool the left side, front and right side of the castings, and effectively solve the problem of cooling dead angles caused by fixed spray angles.

Description

Technical Field

[0001] This invention relates to the field of casting cooling technology, specifically a small-scale casting cooling device. Background Technology

[0002] In the casting process, after the casting process is completed, the casting usually needs to undergo a cooling treatment to achieve the required microstructure and properties and meet the process requirements for subsequent processing. Existing cooling methods mainly include air cooling and water cooling. Among them, water mist cooling has higher heat exchange efficiency than traditional air cooling, and its cooling process is more gentle, which can effectively reduce the risk of cracks caused by thermal stress concentration in the casting. Therefore, it is widely used in the cooling process of small castings.

[0003] However, existing water mist cooling devices still have certain limitations in practical applications, mainly due to the fixed design of their atomizing nozzles and the inability to adjust the spray angle. Since castings typically move or change orientation during transport, while the relative position and angle between the nozzle and the casting remain constant, the water mist sprayed from the nozzle cannot directly cover all areas of the casting surface. Consequently, some surfaces can only rely on the dispersed water mist for indirect cooling, resulting in differences in cooling rates across different parts of the casting, thus affecting the uniformity and consistency of the overall cooling quality. This problem urgently needs to be addressed by improving the nozzle arrangement or structural form to enhance the adaptability and cooling effect of water mist cooling devices for castings of different shapes. Summary of the Invention

[0004] The present invention provides a cooling device for small castings, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A small casting cooling device includes a base, with support plates at both ends of the base, and drive wheels rotatably mounted at the ends of the support plates. A conveyor belt is wound between the two drive wheels, and the surface of the conveyor belt carries castings that move with it. The device also includes a workpiece positioning mechanism and an atomizing cooling mechanism.

[0007] The workpiece positioning mechanism is evenly distributed on the conveyor belt and is used to fix the casting.

[0008] The atomizing cooling mechanism is symmetrically arranged on both sides of the machine base. It includes a support frame fixedly connected to the machine base. A rotating shaft is rotatably connected to the end of the support frame. A lever that rotates synchronously with the rotating shaft is provided on the side of the rotating shaft near the machine base. When the lever abuts against the workpiece positioning mechanism, the rotating shaft swings synchronously with the workpiece positioning mechanism. An angle reset component for driving the lever to reset in the direction of casting feed is provided on the side of the support frame away from the center of the machine base. A guide plate is fixed to the end of the rotating shaft away from the machine base. An atomizing nozzle is installed on the side of the guide plate near the casting.

[0009] As a preferred embodiment of the present invention, the workpiece positioning mechanism includes a sliding plate fixedly connected to the conveyor belt, a guide post in the middle of the sliding plate, a bearing plate fixedly connected to the end of the guide post away from the center of the conveyor belt, and a wedge-shaped clamping block for clamping the casting on the outer side of the bearing plate.

[0010] As a preferred embodiment of the present invention, the number of wedge-shaped clamps is greater than or equal to two, and the wedge-shaped clamps are evenly distributed circumferentially around the center of the bearing plate. When the casting is in a high temperature state, the casting and the wedge-shaped clamps are in an interference fit. After the casting has cooled down, the casting and the wedge-shaped clamps are in a clearance fit.

[0011] As a preferred embodiment of the present invention, the sliding plate has an assembly hole in the middle, the guide post is slidably fitted in the assembly hole, and a baffle is provided at one end of the guide post near the center of the conveyor belt, the outer diameter of the baffle being larger than the diameter of the assembly hole.

[0012] As a preferred embodiment of the present invention, a fixing block is provided at the end of the rotating shaft, the fixing block is slidably connected to the lever, a limit plate is provided at the end of the lever away from the center of the base, and a buffer spring is provided between the limit plate and the fixing block for driving the lever to move toward the center of the base.

[0013] As a preferred embodiment of the present invention, the guide plate is an arc-shaped structure with an opening towards the casting, and a plurality of atomizing nozzles arranged at different heights are provided on the side of the guide plate near the casting.

[0014] As a preferred embodiment of the present invention, the angle reset assembly includes a hanger fixedly connected to a support frame, a guide rod horizontally arranged on the hanger, a first slider slidably connected to the middle of the guide rod, a reset spring sleeved on the guide rod for driving the first slider to move away from the casting feeding direction, a second slider rotatably connected to the side of the first slider, and a transmission rod fixedly connected to the rotating shaft slidably connected to the second slider.

[0015] As a preferred embodiment of the present invention, a protective component is further provided on the outside of the conveyor belt. The protective component includes a protective cover covering the outside of the conveyor belt, a water collection trough at the bottom of the protective cover, and a support leg fixedly connected to the machine base on the outside of the protective cover.

[0016] The present invention has the following advantages:

[0017] 1. Through the coordinated operation of the workpiece positioning mechanism and the atomizing cooling mechanism, dynamic following cooling is achieved during the movement of the casting. As the casting moves with the conveyor belt, the rotating shaft and atomizing nozzles are synchronously deflected by the lever, so that the spray angle of the atomizing nozzles always adaptively adjusts to follow the position of the casting. This provides full-coverage, dead-angle-free spray cooling to the left, front, and right sides of the casting, significantly improving the uniformity of cooling and effectively avoiding problems such as thermal stress concentration or uneven microstructure caused by local cooling rate differences, thus greatly improving the cooling quality of the casting.

[0018] 2. The workpiece positioning mechanism adopts a wedge-shaped clamping block design based on the principle of thermal expansion and contraction. At high temperatures, the wedge-shaped clamping block forms an interference fit with the casting, ensuring the stability of the casting during transport. After cooling, the casting shrinks in volume and transitions to a clearance fit with the wedge-shaped clamping block. Combined with the vibration generated by gravity sliding and collision with the baffle, smooth unloading of the casting is achieved. This structural design is simple and reliable, reducing manual intervention and improving the continuity and automation of equipment operation.

[0019] 3. Multiple sets of atomizing nozzles are arranged at different heights on the arc-shaped guide plate, enabling multi-layered spraying of the casting from top to bottom, further improving cooling efficiency. The buffer spring ensures reliable contact between the lever and the guide post, resulting in smooth transmission; the protective cover and water collection tank effectively prevent water mist diffusion, achieving water resource recycling and combining environmental protection and energy-saving benefits. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of a cooling device for small castings.

[0022] Figure 2 This is a front view of a cooling device for small castings.

[0023] Figure 3This is a schematic diagram of the structure of a cooling device for small castings after the protective cover has been removed.

[0024] Figure 4 This is a schematic diagram of the protective component in a cooling device for small castings.

[0025] Figure 5 This is a schematic diagram of the workpiece positioning mechanism in a cooling device for small castings.

[0026] Figure 6 This is an exploded view of a workpiece positioning mechanism in a cooling device for small castings.

[0027] Figure 7 This is a schematic diagram of the structure of a lever in a small casting cooling device when it is tilted to the left.

[0028] Figure 8 This is a schematic diagram of the angle reset component in a cooling device for small castings.

[0029] Figure 9 This is a schematic diagram of the structure of a lever in a small casting cooling device, showing its front and back orientations.

[0030] In the diagram: 1. Base; 2. Support plate; 3. Drive wheel; 4. Conveyor belt; 5. Workpiece positioning mechanism; 6. Casting; 7. Protective assembly; 8. Atomizing cooling mechanism; 9. Support leg; 10. Protective cover; 11. Water collection tank; 12. Sliding plate; 13. Guide column; 14. Bearing plate; 15. Wedge-shaped clamp; 16. Baffle; 17. Assembly hole; 18. Support frame; 19. Rotating shaft; 20. Lever; 21. Guide plate; 22. Atomizing nozzle; 23. Buffer spring; 24. Limiting plate; 25. Angle reset assembly; 26. Hanger; 27. Guide rod; 28. First slider; 29. ​​Reset spring; 30. Second slider; 31. Drive rod; 32. Fixing block. Detailed Implementation

[0031] 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.

[0032] In one embodiment, see Figure 1 , Figure 2 , Figure 3 and Figure 7A small casting cooling device includes a base 1, which serves as the basic load-bearing component and is placed directly on the working ground to support and fix the entire cooling device. Support plates 2 are vertically fixed at both ends (left and right ends) of the upper surface of the base 1 along its length, with the support plates 2 symmetrically arranged on the front and rear sides. A horizontally extending drive shaft is rotatably mounted on the upper end of each support plate 2, and drive wheels 3 are fixed at both ends of the drive shaft. Conveyor belts 4 are wound around the drive wheels 3 located on the left and right sides of the base 1. Specifically, two sets of conveyor belts 4 are arranged parallel to each other on the front and rear sides above the base 1. The drive shaft can be driven to rotate by a drive device, which can be a motor installed on the support plates 2 or connected to the drive shaft via belt drive, thereby rotating the drive wheels 3 and driving the conveyor belts 4 clockwise. The casting 6 is supported on the upper surface of the conveyor belts 4 and moves to the right along with the conveyor belts 4. That is, casting 6 is fed in from the left "feed end" of machine base 1, and discharged from the right "discharge end" of machine base 1 after cooling.

[0033] To achieve reliable conveying and directional cooling of the casting 6, the equipment also includes a workpiece positioning mechanism 5 and an atomizing cooling mechanism 8. The workpiece positioning mechanism 5 is evenly distributed along the conveying direction of the conveyor belt 4 to fix the casting 6 and ensure its stable movement with the conveyor belt 4. The atomizing cooling mechanism 8 is arranged in groups on the front and rear sides of the machine base 1. Multiple groups can be set according to the actual cooling efficiency requirements; for example, the attached drawings show three groups of atomizing cooling mechanisms 8 arranged along the conveying direction. The atomizing cooling mechanism 8 includes a support frame 18, which is fixedly connected to the side of the machine base 1 and has an overall L-shaped structure, with its upper end extending horizontally towards the center of the machine base 1. A vertically arranged rotating shaft 19 is rotatably connected to the upper end of the support frame 18, and a lever 20 is fixedly mounted on the lower end of the rotating shaft 19, which rotates synchronously with the rotating shaft 19. When the end of lever 20 near the center of the base 1 abuts against the right side of workpiece positioning mechanism 5, workpiece positioning mechanism 5 moves to the right with conveyor belt 4, thereby pushing that end of lever 20 to swing to the right, realizing that atomizing cooling mechanism 8 rotates synchronously with casting 6. An angle reset component 25 is provided on the side of support frame 18 away from the center of base 1. When lever 20 disengages from workpiece positioning mechanism 5, angle reset component 25 drives lever 20 to rotate and reset in the direction of casting 6 feeding, i.e., to the left. A guide plate 21 is fixed to the upper end of rotating shaft 19. An atomizing nozzle 22 is installed on the side of guide plate 21 near casting 6. The atomizing nozzle 22 and lever 20 are in the same vertical plane. Therefore, when lever 20 swings from left to right with casting 6, atomizing nozzle 22 deflects synchronously to the right, thereby realizing comprehensive water mist spraying on the left, front and right sides of casting 6, eliminating the cooling dead angle problem caused by fixed spray angle.

[0034] In one instance of this embodiment, please refer to Figure 3 , Figure 5 and Figure 6 The workpiece positioning mechanism 5 includes a sliding plate 12, which is arranged in a front-to-back direction. Since conveyor belts 4 are provided on both the front and rear sides of the machine base 1, the front and rear ends of the sliding plate 12 are fixedly connected to the outer sides of the two sets of conveyor belts 4, respectively, so that it moves synchronously with the conveyor belts 4. An assembly hole 17 is provided in the middle of the sliding plate 12, and a guide post 13 is inserted through the assembly hole 17. The guide post 13 and the assembly hole 17 are in clearance fit, allowing the guide post 13 to slide up and down relative to the assembly hole 17. To prevent the guide post 13 from rotating, the cross-section of the guide post 13 and the assembly hole 17 can be polygonal. A baffle 16 is provided at the end of the guide post 13 near the center of the conveyor belt 4. The outer diameter of the baffle 16 is larger than the diameter of the assembly hole 17 to prevent the guide post 13 from falling out of the assembly hole 17. A bearing plate 14 is fixedly connected at the end of the guide post 13 away from the center of the conveyor belt 4. The bearing plate 14 is preferably circular. A wedge-shaped clamping block 15 is provided on the outer edge of the support plate 14. The upper end of the wedge-shaped clamping block 15 is an inclined surface, and the side near the center of the support plate 14 is a vertical clamping surface. When the casting 6 is inserted into the center of the support plate 14 from top to bottom, the inclined surface at the upper end of the wedge-shaped clamping block 15 acts as a guide, causing the casting 6 to automatically center. Finally, the side wall of the casting 6 abuts against the vertical clamping surface of the wedge-shaped clamping block 15, thereby achieving clamping and fixation.

[0035] The number of wedge-shaped clamping blocks 15 is at least two, and this application preferably uses three, with each wedge-shaped clamping block 15 circumferentially distributed around the center of the bearing plate 14. The wedge-shaped clamping blocks 15 can be fixed to the side of the bearing plate 14 by bolts, facilitating the selection and replacement of wedge-shaped clamping blocks 15 of appropriate specifications and quantity according to the size and shape of the casting 6. Based on the principle of thermal expansion and contraction, when the casting 6 is in a high-temperature state, its external dimensions are large, and an interference fit is formed between the side wall of the casting 6 and the clamping surface of the wedge-shaped clamping block 15, that is, the wedge-shaped clamping block 15 presses tightly against the side of the casting 6, ensuring that the casting 6 will not loosen during the conveying process. As the casting 6 gradually cools down in the atomizing cooling mechanism 8, its volume shrinks. After cooling is completed, the external dimensions of the casting 6 decrease, and the fit between the casting 6 and the wedge-shaped clamping block 15 changes to a clearance fit, facilitating the detachment of the casting 6 from the workpiece positioning mechanism 5.

[0036] Specifically, casting 6 moves to the right with sliding plate 12. When sliding plate 12 moves to the right drive wheel 3 and rotates downwards around drive wheel 3 with conveyor belt 4, guide column 13 slides downwards under gravity, and casting 6 descends accordingly. If the connection between casting 6 and wedge clamp 15 has loosened due to cooling and shrinkage, casting 6 can fall directly into the pre-set flexible receiving container below under gravity. If a few castings 6 are still tightly connected to wedge clamp 15, the vibration generated when baffle 16 collides with sliding plate 12 will cause casting 6 to further separate from wedge clamp 15, thereby achieving unloading. Under normal working conditions, most castings 6 can be unloaded automatically; for individual cases with tight connections, manual tapping can be used to complete unloading.

[0037] In one instance of this embodiment, please refer to Figure 3 , Figure 5 , Figure 7 , Figure 8 and Figure 9 A fixing block 32 is fixedly mounted at the end of the rotating shaft 19, and the lever 20 is slidably mounted on the fixing block 32. A limiting plate 24 is provided at the end of the lever 20 away from the center of the machine base 1. A buffer spring 23 is provided between the limiting plate 24 and the fixing block 32. The buffer spring 23 always pushes the lever 20 to extend towards the center of the machine base 1. During the swinging process of the lever 20 with the rotating shaft 19, the distance between the rotation center of the lever 20 and the guide post 13 in the workpiece positioning mechanism 5 changes in real time. By adjusting the extension length of the lever 20 by the buffer spring 23, it can be ensured that the guide post 13 maintains effective contact with the lever 20 during the lateral movement, thus ensuring the reliability of the transmission.

[0038] In one instance of this embodiment, please refer to Figure 8 The guide plate 21 is an arc-shaped structure with an opening facing the casting 6. Multiple atomizing nozzles 22 are arranged at different heights on the side of the guide plate 21 close to the casting 6. Each nozzle faces the casting 6, thereby achieving multi-angle and multi-layer atomizing cooling from top to bottom, which significantly improves the cooling efficiency.

[0039] In one instance of this embodiment, please refer to Figure 3 and Figure 8The angle reset assembly 25 includes a hanger 26, which is fixedly connected to the support frame 18 and extends horizontally in the left-right direction. A guide rod 27 is provided below the hanger 26, and a first slider 28 is slidably connected to the guide rod 27. A second slider 30 is rotatably connected to the lower surface of the first slider 28, and a transmission rod 31 slides through the middle of the second slider 30. The end of the transmission rod 31 is fixedly connected to the rotating shaft 19. A reset spring 29 is sleeved on the guide rod 27, located between the left end of the hanger 26 and the first slider 28, and always pushes the first slider 28 to the right. In its natural state, when the first slider 28 is pushed to its rightmost position, the second slider 30 and the transmission rod 31 cause the rotating shaft 19 and the lever 20 to tilt to the left. When the lever 20 is pushed to the right by the workpiece positioning mechanism 5, the first slider 28 overcomes the elastic force of the return spring 29 and slides to the left along the guide rod 27; when the lever 20 is disengaged from the workpiece positioning mechanism 5, the return spring 29 drives the first slider 28 to return to the right, thereby causing the lever 20 and the rotating shaft 19 to automatically return to the initial left tilt state.

[0040] In one instance of this embodiment, please refer to Figure 1 and Figure 4 The equipment also includes a protective component 7. The protective component 7 includes a protective cover 10 that covers the outside of the conveyor belt 4. The protective cover 10 has a U-shaped structure and is fitted over the upper conveyor belt 4. The protective cover 10 prevents water mist from the atomizing nozzles 22 from escaping and polluting the working environment, and also concentrates the water mist within the cover, improving the utilization rate of the cooling medium and enhancing the cooling effect. A water collection tank 11 is located at the bottom of the protective cover 10, directly below the upper conveyor belt 4, to collect the condensed water mist, enabling water resource recovery and recycling, and improving water utilization efficiency. Support legs 9 are fixedly connected to the base 1 on the outside of the protective cover 10 to ensure structural stability.

[0041] In this embodiment, during implementation, the atomizing nozzle 22 and drive device are activated, and the conveyor belt 4 rotates clockwise with the drive wheel 3. The atomizing nozzle 22 sprays cooling water mist into the interior space of the protective cover 10. A casting 6 receiving device is placed at the discharge end on the right side of the equipment. After completing the above preparations, the equipment enters the working state.

[0042] 1. Clamping steps for casting 6: The high-temperature casting 6 is moved to the left side of the equipment using a crane or robotic arm. When the workpiece positioning mechanism 5 rotates with the conveyor belt 4 to the upward position, the casting 6 is inserted from top to bottom into the center of the bearing plate 14. The side wall of the casting 6 abuts against the clamping surface of the wedge-shaped clamping block 15, completing the clamping. The casting 6 then moves to the right with the workpiece positioning mechanism 5.

[0043] 2. Cooling Steps for Casting 6: As the guide post 13 in the workpiece positioning mechanism 5 moves to the right, it first contacts the lever 20, which is in a left-tilted state. At initial contact, the atomizing nozzle 22 faces the right side of the casting 6. As the guide post 13 continues to move to the right, it pushes the lever 20 to swing to the right, and the atomizing nozzle 22 simultaneously deflects to the right, thereby sequentially spraying and cooling the front and left sides of the casting 6. When the lever 20 is pushed to its rightward limit, the guide post 13 continues to move to the right and disengages from the lever 20. At this time, under the action of the angle reset assembly 25, the lever 20 drives the rotating shaft 19 to swing to the left and reset to its initial leftward tilted state. The guide post 13 continues to move to the right, sequentially contacting the lever 20 in the subsequent atomizing cooling mechanism 8, repeating the above process. As the casting 6 continues to move to the right, the cooling process is completed under the continuous action of each group of atomizing cooling mechanisms 8.

[0044] 3. Casting 6 release step: After cooling, casting 6 shrinks in volume, creating a gap between it and the wedge-shaped clamping block 15. When the workpiece positioning mechanism 5 moves with the conveyor belt 4 to the right drive wheel 3 and flips downward, the guide column 13 slides downward under gravity, causing casting 6 to descend and release from the wedge-shaped clamping block 15, falling into the receiving device. The unloaded workpiece positioning mechanism 5 continues to move with the conveyor belt 4, looping back to the left from below, awaiting the clamping of the next casting 6.

[0045] This invention provides a small-scale cooling device for castings. A lever 20 converts the movement of the casting 6 into the adaptive deflection of the atomizing nozzle 22, enabling the nozzle 22 to provide comprehensive and uniform spray cooling to the left, front, and right sides of the casting 6. This effectively solves the cooling dead zone problem caused by a fixed spray angle, improving cooling quality and efficiency. Simultaneously, utilizing the cooling contraction characteristics of the casting 6, combined with gravity and mechanical collision, automatic unloading of the casting 6 is achieved, reducing manual intervention and improving the automation level and operational continuity of the equipment.

[0046] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. A cooling device for small castings, comprising a base, with support plates at both ends of the base, drive wheels rotatably mounted at the ends of the support plates, and a conveyor belt wound between the drive wheels on both sides, characterized in that... The surface of the conveyor belt carries castings that move with it, and also includes a workpiece positioning mechanism and an atomizing cooling mechanism. The workpiece positioning mechanism is evenly distributed on the conveyor belt and is used to fix the casting. The atomizing cooling mechanism is symmetrically arranged on both sides of the machine base. It includes a support frame fixedly connected to the machine base. A rotating shaft is rotatably connected to the end of the support frame. A lever that rotates synchronously with the rotating shaft is provided on the side of the rotating shaft near the machine base. When the lever abuts against the workpiece positioning mechanism, the rotating shaft swings synchronously with the workpiece positioning mechanism. An angle reset component for driving the lever to reset in the direction of casting feed is provided on the side of the support frame away from the center of the machine base. A guide plate is fixed to the end of the rotating shaft away from the machine base. An atomizing nozzle is installed on the side of the guide plate near the casting.

2. The cooling device for small castings according to claim 1, characterized in that, The workpiece positioning mechanism includes a sliding plate fixedly connected to the conveyor belt, a guide post in the middle of the sliding plate, a bearing plate fixedly connected to the end of the guide post away from the center of the conveyor belt, and a wedge-shaped clamping block for clamping the casting on the outer side of the bearing plate.

3. A cooling device for small castings according to claim 2, characterized in that, The number of wedge-shaped clamps is greater than or equal to two, and the wedge-shaped clamps are evenly distributed circumferentially around the center of the bearing plate. When the casting is in a high temperature state, the casting and the wedge-shaped clamps are in an interference fit. After the casting has cooled down, the casting and the wedge-shaped clamps are in a clearance fit.

4. A cooling device for small castings according to claim 3, characterized in that, The sliding plate has an assembly hole in the middle, and the guide post is slidably fitted in the assembly hole. A baffle is provided at one end of the guide post near the center of the conveyor belt, and the outer diameter of the baffle is larger than the diameter of the assembly hole.

5. A cooling device for small castings according to claim 1, characterized in that, A fixing block is provided at the end of the rotating shaft. The fixing block is slidably connected to the lever. A limit plate is provided at the end of the lever away from the center of the base. A buffer spring is provided between the limit plate and the fixing block to drive the lever to move toward the center of the base.

6. A cooling device for small castings according to claim 1, characterized in that, The guide plate is an arc-shaped structure with an opening facing the casting. Multiple atomizing nozzles arranged at different heights are provided on the side of the guide plate near the casting.

7. A cooling device for small castings according to claim 1, characterized in that, The angle reset assembly includes a hanger fixedly connected to a support frame, a guide rod horizontally arranged on the hanger, a first slider slidably connected to the middle of the guide rod, a reset spring sleeved on the guide rod for driving the first slider to move away from the casting feeding direction, a second slider rotatably connected to the side of the first slider, and a transmission rod fixedly connected to the second slider.

8. A cooling device for small castings according to claim 1, characterized in that, The conveyor belt is also equipped with a protective component, which includes a protective cover covering the outside of the conveyor belt, a water collection tank at the bottom of the protective cover, and support legs fixedly connected to the machine base on the outside of the protective cover.

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