Automatic quenching apparatus based on carburizing of nodular iron castings

Abstract

The utility model relates to quenching equipment technical field especially is automatic quenching equipment based on nodular cast iron casting carburizing, including workbench, the middle part of workbench is fixed with quenching cylinder, the inside installation of quenching cylinder has automatic elevating system, the front of quenching cylinder is installed with drive cooling assembly, and automatic elevating system includes two support seats, and the reciprocating screw is rotatably connected between two support seats, the bottom of reciprocating screw is fixed with the shaft coupling, the bottom of shaft coupling is fixed with water wheel, and the surface rotatable connection of reciprocating screw has the placing mechanism, the placing mechanism includes the mobile seat, the front end surface of mobile seat is fixed with the clamping frame, the inner wall of clamping frame is fixed with two left and right symmetry guide posts, and the sliding connection of two guide posts has two clamping sliding blocks, in the utility model, realize the circulation of placing mechanism and lift, and automatic complete feeding, clamping, quenching and unloading, satisfy the high frequency, continuous quenching requirement of nodular cast iron casting carburizing.

Description

Technical Field

[0001] This utility model relates to the field of quenching equipment technology, specifically to an automatic quenching equipment for carburizing ductile iron castings. Background Technology

[0002] Automatic quenching equipment based on carburizing of ductile iron castings is a special automated equipment for surface strengthening treatment of ductile iron castings. Its core function is to improve the surface hardness and wear resistance of castings through carburizing, and then harden the surface layer through quenching while maintaining the toughness of the core. After carburizing, ductile iron castings need to be quenched to improve surface hardness and wear resistance in order to meet the requirements of high-strength working conditions. During the quenching process, the high-temperature carburized castings need to be quickly immersed in the quenching liquid, and the microstructure transformation is achieved by controlling the cooling rate. Therefore, the stability and continuity of the equipment directly affect the mechanical properties of the castings. According to the search, Chinese Patent Publication No. CN202420738591.1 discloses an automatic quenching equipment for screw processing, which includes a stand, a shell, a quenching chamber, a screw, a lifting frame, a slide groove, and a lifting assembly. The bottom of the shell is symmetrically connected with the stand. Slide grooves are connected to both sides of the left side wall inside the shell. The lifting frame is slidably connected between the two slide grooves. The quenching chamber for transporting screws is placed on the lifting frame. The two sides of the quenching chamber are threadedly connected to the lifting frame. The left side of the shell is provided with a lifting assembly for driving the quenching chamber to rise and fall. However, quenching is a critical process in the carburizing of ductile iron castings, requiring frequent cooling of the high-temperature castings. This patent relies on the forward and reverse rotation of a motor to control the lifting and quenching process. Frequent operation of the motor is not only time-consuming and labor-intensive, but also easily affects the equipment lifespan and reduces quenching efficiency due to the impact of motor start-stop. Especially for the carburizing and quenching of batches of ductile iron castings, the traditional method is difficult to adapt to the needs of high-frequency and continuous production. Therefore, an automatic quenching equipment based on the carburizing of ductile iron castings is proposed to address the above problems. Utility Model Content

[0003] The purpose of this invention is to provide an automatic quenching device for carburizing ductile iron castings, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: An automatic quenching device for carburizing ductile iron castings includes a workbench frame, a quenching cylinder fixed in the middle of the workbench frame, an automatic lifting mechanism installed inside the quenching cylinder, and a driving cooling assembly installed in front of the quenching cylinder. The automatic lifting mechanism includes two support seats, a reciprocating screw rotatably connected between the two support seats, a coupling fixed to the bottom end of the reciprocating screw, a water wheel fixed to the bottom end of the coupling, and a placement mechanism rotatably connected to the surface of the reciprocating screw. The placement mechanism includes a movable seat, a clamping frame fixed to the front end face of the movable seat, two symmetrical guide pillars fixed to the inner wall of the clamping frame, two clamping sliders slidably connected between the two guide pillars, and a linkage block fixed to the front end face of one of the clamping sliders.

[0005] As a further optimization of this utility model, the quenching cylinder has an upper limit groove and a driving inclined groove on the side of the top of the cylinder near the linkage block. The driving inclined groove is located in the middle of the inner side of the upper limit groove, and the inner wall of the quenching cylinder has a spiral water flow groove.

[0006] As a further optimization of this utility model, the guide post is a two-section cylinder, the two guide posts are parallel to each other, and a return spring is sleeved on one side of the outer wall of the guide post, the return spring being located between the clamping frame and the clamping slider.

[0007] As a further optimization of this utility model, the linkage block is located at the center of the front end face of the clamping slider, and an adapter groove is provided in one corner area at the bottom of the linkage block, and the adapter groove slides in conjunction with the driving inclined groove.

[0008] As a further optimization of this utility model, the driving cooling assembly includes a delivery pipe, a return pipe, and a water inlet pipe. The delivery pipe is fixed to the top of the inner wall of the quenching cylinder, and the water inlet pipe is fixed to the bottom of the inner wall of the quenching cylinder. The outer side of the return pipe has an inclined structure, and the front end of the return pipe has a conical structure. The position of the return pipe corresponds to the position of the water wheel.

[0009] As a further optimization of this utility model, a cooling pipe is fixedly installed through the middle of the conveying pipe, and cooling fins arranged linearly are fixed on the outer side of the cooling pipe. The center of the cooling fins and the center of the cooling pipe are located on the same central axis, and a water pump is fixedly installed on the surface of the conveying pipe.

[0010] As a further optimization of this utility model, the two support seats are located on the inner wall of the quenching cylinder near the driving cooling component, one of the support seats is located above the return pipe, and the other support seat is located above the water inlet pipe. A support rail is fixed between the two support seats, and the movable seat slides in conjunction with the support rail.

[0011] Compared with the prior art, the beneficial effects of this utility model are: In this invention, an automatic lifting mechanism is used to drive a water wheel and a reciprocating screw to achieve cyclic lifting of the placement mechanism, avoiding frequent start-stop of the motor. The upper limit slot and drive slant slot work together to automatically clamp and reset the clamping slider, driving the cooling components to form a closed loop. The cooling fins accelerate cooling, and the spiral water flow channel improves cooling efficiency. This equipment automatically completes feeding, clamping, quenching, and unloading, meeting the high-frequency and continuous quenching requirements of ductile iron castings for carburizing. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a side view of the overall structure of this utility model; Figure 3 This is a schematic diagram of the structure of the quenching cylinder of this utility model; Figure 4 This is a cross-sectional structural diagram of the quenching cylinder of this utility model; Figure 5 This is a schematic diagram of the placement mechanism of this utility model; Figure 6 This is a schematic diagram of the structure of the drive cooling component of this utility model.

[0013] In the diagram: 1. Workbench frame; 2. Quenching cylinder; 21. Upper limit groove; 22. Drive inclined groove; 23. Spiral water flow groove; 3. Automatic lifting mechanism; 31. Support base; 32. Reciprocating screw; 33. Coupling; 34. Water turbine; 35. Placement mechanism; 351. Movable seat; 352. Clamping frame; 353. Guide post; 354. Clamping slider; 355. Linkage block; 356. Return spring; 357. Adaptor groove; 36. Support rail; 4. Drive cooling assembly; 41. Delivery pipe; 42. Return pipe; 43. Water inlet pipe; 44. Cooling pipe; 45. Cooling fins. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0016] Please see Figures 1-6 This utility model provides a technical solution: An automatic quenching device for carburizing ductile iron castings includes a workbench 1, a quenching cylinder 2 fixed in the middle of the workbench 1, an automatic lifting mechanism 3 installed inside the quenching cylinder 2, and a driving cooling assembly 4 installed in front of the quenching cylinder 2. The automatic lifting mechanism 3 includes two support seats 31, a reciprocating screw 32 rotatably connected between the two support seats 31, a coupling 33 fixed at the bottom end of the reciprocating screw 32, a water wheel 34 fixed at the bottom end of the coupling 33, and a placement mechanism 35 rotatably connected to the surface of the reciprocating screw 32. The placement mechanism 35 includes a movable seat 351, a clamping frame 352 fixed at the front end of the movable seat 351, two left-right symmetrical guide columns 353 fixed on the inner wall of the clamping frame 352, two clamping sliders 354 slidably connected between the two guide columns 353, and a linkage block 355 fixed at the front end of one of the clamping sliders 354.

[0017] As a further implementation of this scheme, an upper limit groove 21 and a driving inclined groove 22 are provided on the side of the top of the quenching cylinder 2 near the linkage block 355. The driving inclined groove 22 is located in the middle of the inner side of the upper limit groove 21, and a spiral water flow groove 23 is provided on the inner wall of the quenching cylinder 2. Specifically, the upper limit groove 21 precisely limits the upper end point of the placement mechanism 35, which facilitates accurate material feeding. The angle of the drive sloping groove 22 matches the slope of the adapter groove 357. When the moving seat 351 moves down, the drive sloping groove 22 generates a lateral thrust on the adapter groove 357, which realizes the automatic clamping of the clamping slider 354. The spiral water flow groove 23 guides the water flow to rise spirally, increasing the contact time with the casting, improving the heat exchange efficiency, and making the quenching more uniform. As a further implementation of this solution, the guide post 353 is a two-section cylinder, with the two guide posts 353 being parallel to each other. A reset spring 356 is sleeved on one side of the outer wall of the guide post 353, and the reset spring 356 is located between the clamping frame 352 and the clamping slider 354. Specifically, the thicker end of the two-section guide post 353 limits the clamping slider 354 to prevent it from falling off and ensure smooth sliding. When the moving seat 351 moves upward, the return spring 356 pushes the clamping slider 354 to return to its original position with the help of elastic force. The elastic force is stable, ensuring that the return stroke is consistent each time, making the unloading action reliable and facilitating continuous operation. As a further implementation of this solution, the linkage block 355 is located at the center of the front end face of the clamping slider 354, and an adapter groove 357 is provided in one corner area at the bottom of the linkage block 355. The adapter groove 357 and the drive inclined groove 22 are in sliding fit. Specifically, when the adapter slot 357 slides with the drive inclined slot 22, the vertical movement of the moving seat 351 is converted into the horizontal movement of the clamping slider 354. As a further implementation of this solution, the driving cooling assembly 4 includes a delivery pipe 41, a return pipe 42, and a water inlet pipe 43. The delivery pipe 41 is fixed to the top of the inner wall of the quenching cylinder 2, and the water inlet pipe 43 is fixed to the bottom of the inner wall of the quenching cylinder 2. The outer side of the return pipe 42 is inclined, and the front end of the return pipe 42 is conical. The position of the return pipe 42 corresponds to the position of the water wheel 34. A cooling pipe 44 is fixed to the middle of the delivery pipe 41, and cooling fins 45 arranged linearly are fixed to the outer side of the cooling pipe 44. The center of the cooling fins 45 and the center of the cooling pipe 44 are located on the same central axis. A water pump is fixedly installed on the surface of the delivery pipe 41. Specifically, the delivery pipe 41, return pipe 42, and inlet pipe 43 form a closed loop. The water pump provides power, the cooling fins 45 increase the heat dissipation area of ​​the cooling pipe 44 to accelerate cooling, and the conical structure of the return pipe 42 increases the water flow velocity, enhances the driving force on the water turbine 34, and ensures the stable operation of the automatic lifting mechanism 3. As a further implementation of this solution, two support seats 31 are located on the inner wall of the quenching cylinder 2 near the drive cooling assembly 4. One support seat 31 is located above the return pipe 42, and the other support seat 31 is located above the water inlet pipe 43. A support rail 36 is fixed between the two support seats 31, and the movable seat 351 slides with the support rail 36. Specifically, the two support seats 31 firmly support the reciprocating screw 32 to prevent it from shaking when rotating, and the support rail 36 slides with the movable seat 351 to limit the direction of movement of the movable seat 351 and ensure that it rises and falls in a straight line.

[0018] Work process: Inject an appropriate amount of quenching liquid into the quenching cylinder 2, start the water pump on the delivery pipe 41, so that the quenching liquid flows into the cooling pipe 44 through the delivery pipe 41. After being rapidly cooled by the cooling fins 45, it is sent back to the bottom of the quenching cylinder 2 through the return pipe 42. At the same time, the water inlet pipe 43 replenishes new liquid to form a circulation. The tapered structure at the front end of the return pipe 42 enhances the water flow pressure, impacting the water wheel 34 to rotate. This, via the coupling 33, drives the reciprocating screw 32 to rotate, causing the moving seat 351 to circulate up and down along the support rail 36. The support seat 31 ensures the stable operation of the reciprocating screw 32. When the movable seat 351 rises to the position corresponding to the upper limit slot 21, the casting to be quenched is placed in. When the movable seat 351 moves down, the adapter slot 357 of the linkage block 355 cooperates with the drive inclined slot 22, pushing the clamping slider 354 to move inward along the guide column 353, automatically clamping the casting. The moving seat 351 holding the casting moves down to the bottom of the quenching cylinder 2 to complete the quenching. During the upward movement, the return spring 356 pushes the clamping slider 354 to reset, releasing the casting. After the quenched part is taken out, a new casting is placed in, and the cycle is repeated. The spiral water flow groove 23 accelerates the water flow circulation and improves the cooling efficiency. This device relies on the continuous water flow to drive it. The equipment automatically completes the feeding, clamping, quenching and unloading cycle. The cooling fins 45 maintain the low temperature of the quenching liquid to ensure the continuity and quality stability of the carburizing and quenching of the ductile iron casting.

[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic quenching equipment for carburizing ductile iron castings, comprising a workbench (1), characterized in that: A quenching cylinder (2) is fixed in the middle of the workbench (1). An automatic lifting mechanism (3) is installed inside the quenching cylinder (2). A driving cooling assembly (4) is installed in front of the quenching cylinder (2). The automatic lifting mechanism (3) includes two support seats (31), and a reciprocating screw (32) is rotatably connected between the two support seats (31). A coupling (33) is fixed at the bottom end of the reciprocating screw (32), and a water wheel (34) is fixed at the bottom end of the coupling (33). A placement mechanism (35) is rotatably connected to the surface of the reciprocating screw (32). The placement mechanism (35) includes a movable seat (351), a clamping frame (352) is fixed to the front end face of the movable seat (351), and two guide pillars (353) that are symmetrically arranged on the left and right sides are fixed to the inner wall of the clamping frame (352). Two clamping sliders (354) are slidably connected between the two guide pillars (353), and a linkage block (355) is fixed to the front end face of one of the clamping sliders (354).

2. The automatic quenching equipment for carburizing ductile iron castings according to claim 1, characterized in that: The top of the quenching cylinder (2) near the linkage block (355) is provided with an upper limit groove (21) and a driving inclined groove (22). The driving inclined groove (22) is located in the middle of the inner side of the upper limit groove (21). The inner wall of the quenching cylinder (2) is provided with a spiral water flow groove (23).

3. The automatic quenching equipment for carburizing ductile iron castings according to claim 1, characterized in that: The guide post (353) is a two-section cylinder, and the two guide posts (353) are parallel to each other. A reset spring (356) is sleeved on one side of the outer wall of the guide post (353), and the reset spring (356) is located between the clamping frame (352) and the clamping slider (354).

4. The automatic quenching equipment for carburizing ductile iron castings according to claim 1, characterized in that: The linkage block (355) is located at the center of the front end face of the clamping slider (354). An adapter groove (357) is provided in one corner area at the bottom of the linkage block (355). The adapter groove (357) slides in conjunction with the drive inclined groove (22).

5. The automatic quenching equipment for carburizing ductile iron castings according to claim 1, characterized in that: The drive cooling assembly (4) includes a delivery pipe (41), a return pipe (42), and a water inlet pipe (43). The delivery pipe (41) is fixed to the top of the inner wall of the quenching cylinder (2), and the water inlet pipe (43) is fixed to the bottom of the inner wall of the quenching cylinder (2). The outer side of the return pipe (42) is inclined, and the front end of the return pipe (42) is conical. The position of the return pipe (42) corresponds to the position of the water wheel (34).

6. The automatic quenching equipment for carburizing ductile iron castings according to claim 5, characterized in that: A cooling pipe (44) is fixedly installed through the middle of the conveying pipe (41), and cooling fins (45) arranged in a linear pattern are fixed on the outside of the cooling pipe (44). The center of the cooling fins (45) and the center of the cooling pipe (44) are located on the same central axis. A water pump is fixedly installed on the surface of the conveying pipe (41).

7. The automatic quenching equipment for carburizing ductile iron castings according to claim 1, characterized in that: The two support seats (31) are located on the inner wall of the quenching cylinder (2) near the drive cooling assembly (4). One of the support seats (31) is located above the return pipe (42), and the other support seat (31) is located above the water inlet pipe (43). A support rail (36) is fixed between the two support seats (31), and the movable seat (351) slides with the support rail (36).

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