Quenching device for extrusion of complex cross-section members

Abstract

This utility model relates to the field of quenching equipment technology, particularly a quenching device for extruding complex cross-section components. It includes a quenching tank and a zoned spraying system. A liftable support device is fixedly connected inside the quenching tank, and several adjustable gripping devices are rotatably connected to the upper part of the liftable support. The zoned spraying system is fixedly installed outside the quenching tank. Common quenching devices suffer from uneven cooling, leading to deformation and high residual stress. Traditional immersion quenching or simple overall spraying results in severely uneven cooling rates in different parts of extruded components with large variations in cross-sectional thickness and asymmetrical structures. This new invention, by independently controlling the flow rate in each zone, can significantly increase the flow rate and impact force of the cooling medium in thick-walled areas while reducing the flow rate in thin-walled areas, thereby balancing the cooling rate in different areas, effectively suppressing quenching deformation, and reducing residual stress. For example, for I-beams, a smaller flow rate is used for the web, and a larger flow rate is used for the flanges.

Description

Technical Field

[0001] This utility model relates to the field of quenching equipment technology, and in particular to a quenching equipment for extruding complex cross-section components. Background Technology

[0002] Quenching is a crucial heat treatment process in the field of metal processing. It involves rapidly cooling high-temperature workpieces to alter the internal structure and properties of metallic materials, thereby improving their hardness, wear resistance, and other properties.

[0003] The importance and purpose of quenching process: Quenching is a heat treatment process in which a workpiece is heated to above the critical temperature, held at that temperature for a period of time, and then rapidly cooled at a cooling rate greater than the critical cooling rate to carry out martensitic or bainitic transformation. It can significantly improve the rigidity, hardness, wear resistance, fatigue strength and toughness of the workpiece, thereby meeting different application requirements. It is widely used in many fields such as machinery manufacturing, automotive industry, and aerospace.

[0004] Spray quenching is an important process in metal heat treatment. Its development stems from improvements to traditional quenching processes and the demand for higher quality and more efficient quenching. Machine transmission components, hardware tools, and precision instruments all require quenching to increase their hardness and wear resistance. With the development of industrial technology, the performance requirements for metal parts are becoming increasingly stringent, necessitating more advanced quenching processes to ensure that parts achieve ideal mechanical properties, such as higher strength, toughness, and better wear resistance.

[0005] Defects of traditional quenching processes: Cooling rate and stress control issues: Traditional salt bath plus pool quenching (pool quenching) has a low cooling rate, and it is difficult to accurately control the cooling rate of different cooling surfaces and different cooling time periods. This can easily lead to low mechanical properties of the quenched material, large residual stress, and may also cause cracks and severe distortion.

[0006] Special requirements for quenching specific workpieces: For parts with complex shapes, traditional quenching methods struggle to achieve uniform cooling. Spray quenching, however, can meet the quenching needs of complex-shaped parts by strategically arranging nozzles to cool the parts from multiple directions. Furthermore, for special workpieces such as aluminum alloy cylindrical parts, traditional immersion quenching methods suffer from limited cooling rates and uneven cooling due to their material properties and shape. Spray quenching, on the other hand, offers high cooling rates and strong controllability of cooling intensity, enabling synchronous, zoned, and graded quenching processes, better meeting the requirements for performance and residual stress control.

[0007] Uneven cooling in conventional quenching equipment leads to significant deformation and residual stress. Traditional immersion quenching or simple overall spraying results in severely uneven cooling rates in extruded parts with large variations in cross-sectional thickness and asymmetrical structures (such as thick flanges and thin webs in I-beams). Thin areas cool too quickly, causing severe shrinkage, while thick areas cool slowly, resulting in sluggish shrinkage and generating enormous internal stress. This leads to severe twisting and warping deformation, as well as residual harmful stress, affecting dimensional accuracy and fatigue life. Utility Model Content

[0008] The main purpose of this invention is to provide a quenching device for extruding complex cross-section components, so as to solve the problems raised in related technologies.

[0009] To achieve the above objectives, according to one aspect of the present invention, a quenching device for extruding complex cross-section components is provided, including a quenching tank device and a zoned spraying system device. The quenching tank device is provided with a liftable support device for adjusting the quenching position of the workpiece. The upper part of the liftable support device is rotatably connected to two adjustable gripping devices for gripping the workpiece. The zoned spraying system device is installed outside the quenching tank device for zoned spraying of workpieces of different shapes.

[0010] Furthermore, the quenching tank device includes a rectangular tank with a drain outlet at the bottom and a filter screen laid above the drain outlet.

[0011] Furthermore, the liftable support device includes two liftable support bases and several cylinders, with two folding mechanisms slidably installed on each liftable support base.

[0012] Furthermore, the folding mechanism consists of several folding rods that are rotatably connected end to end. The folding rods in the same layer are rotatably connected at the middle, and the top folding rods in the top layer are rotatably connected at the top. Supporting crossbars are fixedly connected to the inner side of the connection points of the folding rods in the same layer below the top layer. Both ends of the cylinder are fixedly connected to the supporting crossbars for opening or folding the liftable support device.

[0013] Furthermore, each adjustable gripping device includes two rotating shafts, several upper cylinders, and several lower cylinders. An adjustable robotic arm is fixedly connected to the top of each rotating shaft. An adjustable gripper base is fixedly connected to the adjustable robotic arm. Lower and upper grippers are rotatably connected to the adjustable gripper base. The bottoms of both upper and lower cylinders are fixedly connected to the adjustable gripper base. The tops of the piston rods of the upper cylinders are rotatably connected to the upper gripper, and the tops of the piston rods of the lower cylinders are rotatably connected to the lower gripper. When the piston rods of the upper and lower cylinders extend or retract, they cause the upper and lower grippers to rotate in opposite directions and close. When the piston rods of the upper and lower cylinders retract or extend, they cause the upper and lower grippers to rotate in opposite directions and open. An adjustable robotic arm is fixedly connected to an adjustable gripper base, and a lower gripper is rotatably connected to it. Furthermore, the zoned sprinkler system device includes a sprinkler system bracket and several adjustable spray bars. Several sliders are slidably connected to the sprinkler system bracket. One end of each adjustable spray bar is rotatably mounted on a slider, and an adjustable nozzle is rotatably mounted on the other end of each adjustable spray bar.

[0014] Furthermore, when the piston rod on the cylinder rises, the folding mechanism is lifted; conversely, the folding mechanism falls and folds up.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This novel design, through adjustable spray booms and adjustable nozzles, allows for independent flow control in different zones. This significantly increases the cooling medium flow rate and impact force in thick-walled areas while reducing the flow rate in thin-walled areas, thereby balancing the cooling rate in different zones and reducing residual stress. For example, for I-beams, a smaller flow rate is used for the web, while a larger flow rate is used for the flanges. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the quenching device for extruding complex cross-section components according to this utility model; Figure 2 This is a schematic diagram of the quenching tank device of this utility model; Figure 3 This is a schematic diagram of the structure of the liftable support device of this utility model; Figure 4 This is a schematic diagram of the adjustable gripping device of this utility model; Figure 5 This is a schematic diagram of the structure of the zoned sprinkler system device of this utility model; Figure 6 This utility model Figure 4 Enlarged schematic diagram of the structure at point A in the middle; 1. Quenching tank device; 2. Liftable support device; 3. Adjustable gripping device; 4. Zoned spraying system device; 11. Rectangular trough; 12. Drain outlet; 13. Filter screen; 21. Adjustable support base; 22. Folding rod; 23. Support crossbar; 24. Cylinder; 31. Rotary axis; 32. Adjustable robotic arm; 33. Adjustable gripper base; 34. Lower gripper; 35. Upper cylinder; 36. Upper gripper; 37. Lower cylinder; 41. Sprinkler system bracket; 42. Slider; 43. Adjustable spray bar; 44. Adjustable nozzle. Detailed Implementation

[0017] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0018] This embodiment provides a quenching device for extruding complex cross-section components, such as... Figure 1 As shown, it includes a quenching tank device 1 and a zoned spraying system device 4. The quenching tank device 1 is equipped with a liftable support device 2 for adjusting the quenching position of the workpiece. The upper part of the liftable support device 2 is rotatably connected to two adjustable gripping devices 3 for gripping the workpiece. The zoned spraying system device 4 is installed outside the quenching tank device 1 for zoned spraying of workpieces of different shapes.

[0019] like Figure 2 As shown, the quenching tank device 1 includes a rectangular tank 11 for collecting quenching liquid sprayed from an adjustable nozzle. A drain port 12 is opened at the bottom of the rectangular tank 11 for discharging the quenching liquid sprayed from the adjustable nozzle. A filter screen 13 is laid above the drain port 12 for separating and treating waste residue and quenching liquid sprayed from the adjustable nozzle.

[0020] like Figure 3 As shown, the liftable support device 2 includes two liftable support bases 21 and several cylinders 24. Two folding mechanisms are slidably installed on each liftable support base 21. The folding mechanism consists of several folding rods 22 that are rotatably connected end to end. The folding rods 22 on the same layer are rotatably connected in the middle. The top folding rods 22 on the top layer are rotatably connected at their top ends. Supporting crossbars 23 are fixedly connected to the inner side of the connection points of the folding rods 22 on the same layer below the top layer. Both ends of the cylinders 24 are fixedly connected to the supporting crossbars 23 for opening or folding the liftable support device 2.

[0021] When the folding mechanism is raised, the distance between the support crossbar 23 and the top of the folding bar 22 is greater than the overall length of the adjustable gripping device 3 after it has gripped the high-temperature extruded part, ensuring that the adjustable gripping device 3 with the high-temperature extruded part can rotate freely, thereby flipping the high-temperature extruded part.

[0022] like Figure 4 and Figure 6As shown, the adjustable gripping device 3 includes two rotating shafts 31, several upper cylinders 35, and several lower cylinders 37. An adjustable mechanical arm 32 is fixedly connected to the top of each rotating shaft 31, and its bottom is fixedly connected to the connection point at the top of the liftable support device 2. The rotating shafts 31 can rotate along the connection point at the top of the liftable support device 2 under the drive of a motor. An adjustable gripper base 33 is fixedly connected to the adjustable mechanical arm 32, and a lower gripper 34 and an upper gripper 36 are rotatably connected to the adjustable gripper base 33. The bottoms of cylinder 35 and lower cylinder 37 are fixedly connected to the adjustable gripper base 33. The top of the piston rod of upper cylinder 35 is rotatably connected to the fixed upper gripper 36, and the top of the piston rod of lower cylinder 37 is rotatably connected to the lower gripper 34. When the piston rod of upper cylinder 35 extends and the piston rod of lower cylinder 37 retracts, it drives the upper gripper 36 and lower gripper 34 to rotate in opposite directions and close. When the piston rod of upper cylinder 35 retracts and the piston rod of lower cylinder 37 extends, it drives the upper gripper 36 and lower gripper 34 to rotate in opposite directions and open.

[0023] like Figure 5 As shown, the zoned spray system device 4 includes a spray system support 41 and several adjustable spray rods 43. Several sliders 42 are slidably connected to the spray system support 41. One end of each adjustable spray rod 43 is rotatably mounted on a slider 42 via a damping hinge, and the other end is rotatably mounted with an adjustable nozzle 44 via a damping hinge. These damping hinges will only rotate under a certain force, allowing the device to be fixed in the required position when no force or a small force is applied. The adjustable spray rods 43 are connected to an external quenching medium via hoses. A booster pump is connected to the hoses, which pumps the quenching medium into the adjustable spray rods 43 through the hoses and sprays it out from the adjustable nozzles 44 to quench the high-temperature extruded parts.

[0024] When the piston rod on the cylinder 24 rises, the folding mechanism is lifted; conversely, the folding mechanism falls and folds up; this is used to adjust the position of the quenched workpiece in the vertical direction.

[0025] Working Principle: To place the high-temperature extruded part on the adjustable gripping device 3, the piston rod of the upper cylinder 35 retracts and the piston rod of the lower cylinder 37 extends, causing the upper clamp 36 and lower clamp 34 to rotate in opposite directions and open. The high-temperature extruded part can then be placed into the upper clamp 36 and lower clamp 34. Then, when the piston rod of the upper cylinder 35 extends and the piston rod of the lower cylinder 37 retracts, the upper clamp 36 and lower clamp 34 will rotate relative to each other under force, clamping the high-temperature extruded part. The operator manually pre-adjusts the position, angle, and nozzle direction of the relevant components on the zoned spray system device 4 according to the workpiece cross-section type, ensuring it is roughly aligned with the target area, and then activates the zoned spray system device 4. When the piston rod of the cylinder 24 descends, it pulls the folding rod 22 down, folding the mechanism and lowering the high-temperature extruded part to the working position. The zoned spray system device 4 is then activated to provide targeted cooling to different areas of the workpiece. When the quenching time is up, the spraying stops, the piston rod of cylinder 24 extends, pushing the folding rod 22 to rise, unfolding the folding mechanism, and lifting the high-temperature extruded part. The bottom of the motor is fixedly installed inside the connection point of the two folding rods 22 at the top of the liftable support device 2, and one end of its output shaft is fixedly connected to the rotating shaft 31 to drive the rotating shaft 31 to rotate. If reverse cooling is required, the adjustable gripping device 3 automatically flips along the top of the liftable support device 2 under the drive of the motor output shaft, and then the liftable support device 2 descends to the working position, restarting the booster pump to quench the high-temperature extruded part.

[0026] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A quenching device for extruding complex cross-section components, characterized in that, The device includes a quenching tank device (1) and a partitioned spraying system device (4). The quenching tank device (1) is equipped with a liftable support device (2) for adjusting the quenching position of the workpiece. The upper part of the liftable support device (2) is rotatably connected to two adjustable gripping devices (3) for gripping the workpiece. The partitioned spraying system device (4) is installed outside the quenching tank device (1) for partitioned spraying of workpieces of different shapes. The quenching tank device (1) includes a rectangular tank (11), with a drain port (12) at the bottom of the rectangular tank (11) and a filter screen (13) laid above the drain port (12). The adjustable gripping device (3) includes two rotating shafts (31), several upper cylinders (35), and several lower cylinders (37). An adjustable mechanical arm (32) is fixedly connected to the top of the rotating shaft (31). An adjustable gripper base (33) is fixedly connected to the adjustable mechanical arm (32). A lower gripper (34) and an upper gripper (36) are rotatably connected to the adjustable gripper base (33). The bottoms of the upper cylinders (35) and the lower cylinders (37) are fixedly connected to the adjustable gripper base (33). The zoned spray system device (4) includes a spray system bracket (41) and several adjustable spray rods (43). Several sliders (42) are slidably connected to the spray system bracket (41). One end of each adjustable spray rod (43) is rotatably mounted on the slider (42), and an adjustable nozzle (44) is rotatably mounted on the other end.

2. The quenching device for extruding complex cross-section components according to claim 1, characterized in that: The liftable support device (2) includes two liftable support bases (21) and several cylinders (24). Two folding mechanisms are slidably installed on each of the liftable support bases (21).

3. The quenching apparatus for extruding complex cross-section components according to claim 2, characterized in that: The folding mechanism consists of several folding rods (22) that are rotatably connected end to end. The folding rods (22) in the same layer are rotatably connected in the middle. The top folding rods (22) in the top layer are rotatably connected at the top. The inner side of the connection of the folding rods (22) in the same layer below the top layer is fixedly connected to a support crossbar (23). Both ends of the cylinder (24) are fixedly connected to the support crossbar (23) for opening or folding the liftable support device (2).

4. The quenching device for extruding complex cross-section components according to claim 3, characterized in that: The top of the piston rod of the upper cylinder (35) is rotatably connected to the upper clamp (36), and the top of the piston rod of the lower cylinder (37) is rotatably connected to the lower clamp (34). When the piston rod of the upper cylinder (35) extends and the piston rod of the lower cylinder (37) retracts, the upper clamp (36) and the lower clamp (34) rotate in opposite directions to close. When the piston rod of the upper cylinder (35) retracts and the piston rod of the lower cylinder (37) extends, the upper clamp (36) and the lower clamp (34) rotate in opposite directions to open.

5. The quenching apparatus for extruding complex cross-section components according to claim 4, characterized in that: When the piston rod on the cylinder (24) rises, the folding mechanism is lifted; conversely, the folding mechanism falls and folds up.

Images