Cooling structure for heat treatment of nodular iron casting

Abstract

The utility model relates to the technical field of nodular iron casting heat treatment equipment, and discloses a cooling structure for nodular iron casting heat treatment, which is characterized in that a supporting assembly comprises a supporting shell and a servo motor mounted in the middle of the lower end of the supporting shell, a transmission part is arranged in the supporting shell, and a supporting disc is arranged at the tail end of the transmission part; the cooling assembly comprises a cooler and a flow guide assembly installed at the output end of the cooler, an inner cooling pipe and an outer cooling pipe are installed at the tail end of the flow guide assembly, the nodular iron casting is conveyed into the supporting disc through the mechanical arm, and then a telescopic rod is started to enable the supporting shell to move upwards and be inserted into the sealing shell; the cooler is started to enable air to flow out of the inner cooling pipe and the outer cooling pipe through the flow guide assembly and be blown to the surface of the nodular iron casting, then the servo motor is started to drive the multiple sets of supporting discs to drive the nodular iron casting to rotate through the transmission component, internal and external synchronous cooling is achieved, the cooling uniformity is improved, and the quality of the nodular iron casting is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of heat treatment equipment for ductile iron castings, in particular to a cooling structure for heat treatment of ductile iron castings. Background Art

[0002] Ductile iron (also known as ductile casting, ductile iron, ductile iron pipe) is a special type of cast iron material with cooling structure for heat treatment of ductile iron parts. During the casting process, by controlling the content of alloy elements and adding elements such as magnesium, the carbon of the cast iron will be distributed in the form of spherical or almost spherical graphite, thereby improving the mechanical properties of the cast iron. Ductile iron has excellent performance in strength, toughness and wear resistance, and is widely used in the engineering field.

[0003] The existing Chinese patent with publication number CN111647729A discloses a heat treatment process for eliminating the white cast defects of ductile iron by using a cooling structure for heat treatment of ductile iron parts. The air cooling device used in the process includes a wind tube, a circular ring is fixed at one end of the wind tube, a water absorption disk is fixed on the inner wall of the circular ring, and the water absorption disk is made of a water-absorbing resin material. An exhaust fan is fixed at one end of the inner cavity of the wind tube close to the circular ring, and the exhaust fan is used to extract air. A heating net is provided on the side of the exhaust fan away from the circular ring, and the heating net is used to adjust the temperature of the air entering the wind tube. Two Guide rails, two of which are movably provided with placing racks; the present invention absorbs and filters the moisture in the air and heats the air entering the air duct so that the air in contact with the ductile iron parts is dry and not at a low temperature, thereby avoiding the deformation and cracking problems of the ductile iron parts that may occur during the air cooling process, thereby ensuring the heat treatment effect of the ductile iron parts. However, the present invention has the problem that when cooling the entire ductile iron parts, the air flows from the outside of the ductile iron parts for cooling. Since it does not perform precise cooling, there is a temperature difference between the inside and outside air, thereby reducing the cooling uniformity, thereby affecting the quality of the ductile iron parts. Utility Model Content

[0004] The utility model aims to provide a cooling structure for heat treatment of ductile iron castings. By adopting the device to work, the problem that the temperature difference between the air inside and outside the ductile iron castings reduces the cooling uniformity and affects the quality of the ductile iron castings is solved.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cooling structure for heat treatment of ductile iron castings, comprising a sealing shell and a cooling assembly installed at the upper end of the sealing shell, a support assembly is arranged at the lower end of the sealing shell, a telescopic rod is installed at the lower end of the support assembly, the support assembly comprises a support shell and a servo motor installed in the middle of the lower end of the support shell, a transmission component is arranged inside the support shell, and a support plate is arranged at the end of the transmission component; the cooling assembly comprises a cooler and a guide assembly installed at the output end of the cooler, and an inner cooling pipe and an outer cooling pipe are installed at the end of the guide assembly.

[0006] Preferably, the sealing shell includes a support box and support columns installed on the lower side of the support box, at least three support columns are provided, and the length of the support columns is greater than the total extended length of the support assembly and the telescopic rod.

[0007] Preferably, the transmission component includes a driving gear and multiple groups of driven gears meshing with the driving gear, the middle part of the driving gear is fixedly connected to the driving end of the servo motor, one end of the driven gear is fixedly connected to the support shell, and the other end is fixedly connected to the bottom of the support plate.

[0008] Preferably, a clamping piece is symmetrically arranged on the inner side of the support plate, and the clamping piece is connected to the support plate via a clamping spring.

[0009] Preferably, the flow guide assembly includes a main flow guide pipe and multiple auxiliary flow guide pipes installed at the output end of the main flow guide pipe, the input end of the main flow guide pipe is connected to the output end of the cooler, the output end of the auxiliary flow guide pipe is provided with a flow guide ring, the output end of the flow guide ring is provided with multiple groups of flow guide pipes, the output ends of the multiple groups of flow guide pipes are all provided with inner cooling pipes and outer cooling pipes, and the multiple groups of inner cooling pipes and outer cooling pipes correspond to the multiple groups of support plates.

[0010] Preferably, guide grooves are provided through the inner cooling tube and the outer cooling tube, the guide grooves are trapezoidal in top view, and the guide grooves on the inner cooling tube correspond to the guide grooves on the outer cooling tube, and the ductile iron part is located between the inner cooling tube and the outer cooling tube relative to each other.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] The utility model proposes a cooling structure for heat treatment of ductile iron parts. A support component comprises a support shell and a servo motor installed in the middle part of the lower end of the support shell. A transmission component is arranged inside the support shell, and a support plate is arranged at the end of the transmission component. The cooling component comprises a cooler and a guide component installed at the output end of the cooler. An inner cooling pipe and an outer cooling pipe are arranged at the end of the guide component. The ductile iron parts are transported to the inside of the support plate through a mechanical arm, and then the telescopic rod is started to move the support shell upward and inserted into the inside of the sealing shell. The cooler is started to make air flow out from the inner cooling pipe and the outer cooling pipe through the guide component and blow to the surface of the ductile iron parts. Then the servo motor is started to drive multiple groups of support plates through the transmission component to drive the ductile iron parts to rotate, thereby realizing internal and external synchronous cooling, thereby improving cooling uniformity and ensuring the quality of the ductile iron parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the utility model before cooling;

[0014] Figure 2 It is a schematic diagram of the three-dimensional structure of the telescopic rod and the supporting assembly of the utility model;

[0015] Figure 3 It is a schematic diagram of the three-dimensional structure of the sealing shell and the cooling assembly of the utility model;

[0016] Figure 4 It is a three-dimensional structural diagram of the transmission component of the utility model;

[0017] Figure 5 It is a schematic diagram of the planar structure of the ductile iron casting of the utility model in a cooling state;

[0018] Figure 6 It is a schematic diagram of the overall three-dimensional structure of the ductile iron casting of the utility model in a cooled state.

[0019] In the figure: 1. sealing shell; 11. supporting box; 12. supporting column; 2. cooling assembly; 21. cooler; 22. main guide pipe; 23. secondary guide pipe; 24. guide ring; 25. shunt pipe; 26. inner cooling pipe; 27. outer cooling pipe; 271. guide groove; 3. telescopic rod; 4. supporting assembly; 41. supporting shell; 42. servo motor; 43. driving gear; 44. driven gear; 45. supporting plate; 452. clamping plate; 451. clamping spring; 5. ductile iron casting. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings.

[0022] Combination Figure 1-Figure 4 And 5, a cooling structure for heat treatment of ductile iron castings, comprising a sealed shell 1 and a cooling assembly 2 installed at the upper end of the sealed shell 1, a supporting assembly 4 is arranged at the lower end of the sealed shell 1, and a telescopic rod 3 is installed at the lower end of the supporting assembly 4.

[0023] The support assembly 4 includes a support shell 41 and a servo motor 42 installed in the middle of the lower end of the support shell 41. A transmission component is arranged inside the support shell 41, and a support plate 45 is arranged at the end of the transmission component.

[0024] The cooling assembly 2 includes a cooler 21 and a flow guide assembly installed at the output end of the cooler 21, and an inner cooling pipe 26 and an outer cooling pipe 27 are installed at the end of the flow guide assembly;

[0025] Specifically, the ductile iron part 5 is transported to the inside of the support plate 45 by the robot arm, and then the telescopic rod 3 is started to move the support shell 41 upward and inserted into the sealing shell 1, and the cooler 21 is started to allow air to flow out from the inner cooling pipe 26 and the outer cooling pipe 27 through the guide assembly and blow to the surface of the ductile iron part 5, and then the servo motor 42 is started to drive the multiple groups of support plates 45 through the transmission components to drive the ductile iron part 5 to rotate, thereby realizing synchronous cooling inside and outside, thereby improving the cooling uniformity and ensuring the quality of the ductile iron part.

[0026] The sealing shell 1 includes a support box 11 and support columns 12 installed on the lower side of the support box 11. At least three support columns 12 are provided to support the sealing shell 1 and the cooling assembly 2. The length of the support columns 12 is greater than the total extended length of the support assembly 4 and the telescopic rod 3, so as to create a gap between the support assembly 4 and the bottom of the sealing shell 1, thereby facilitating loading and unloading.

[0027] The transmission component includes a driving gear 43 and a plurality of groups of driven gears 44 meshing with the driving gear 43. The middle portion of the driving gear 43 is fixedly connected to the driving end of the servo motor 42. One end of the driven gear 44 is fixedly connected to the support shell 41, and the other end is fixedly connected to the bottom of the support plate 45. The servo motor 42 drives the driving gear 43 to rotate. The driving gear 43 can synchronously drive the plurality of groups of driven gears 44 to rotate, and then drive the plurality of ductile iron castings 5 ​​to rotate, thereby realizing the cooling of batches of ductile iron castings 5 ​​and improving production efficiency.

[0028] The guide assembly includes a main guide pipe 22 and a plurality of auxiliary guide pipes 23 installed at the output end of the main guide pipe 22. The input end of the main guide pipe 22 is connected to the output end of the cooler 21. The output end of the auxiliary guide pipe 23 is provided with a guide ring 24. The output end of the guide ring 24 is provided with a plurality of groups of guide pipes 25. The output ends of the plurality of groups of guide pipes 25 are all provided with inner cooling pipes 26 and outer cooling pipes 27. The plurality of groups of inner cooling pipes 26 and outer cooling pipes 27 correspond to the plurality of groups of support plates 45. The air output by the cooler 21 is output from the main guide pipe 22, and then flows to the inner cooling pipes 26 and the outer cooling pipes 27 through the auxiliary guide pipes 23, the guide rings 24 and the diverter pipes 25, and is blown to the outside of the corresponding ductile iron parts 5, so as to realize uniform cooling of batches of ductile iron parts 5 and improve production efficiency.

[0029] Combination Figure 5 The inner cooling tube 26 and the outer cooling tube 27 are penetrated with guide grooves 271, which are trapezoidal in plan view, and the guide grooves 271 on the inner cooling tube 26 correspond to the guide grooves 271 on the outer cooling tube 27. The ductile iron part 5 is located between the inner cooling tube 26 and the outer cooling tube 27, and air is ejected from the inner cooling tube 26 and the outer cooling tube 27, and the same part of the inner and outer sides of the ductile iron part 5 is cooled at the same time, thereby further improving the cooling uniformity.

[0030] Combination Figure 2 A clamping piece 452 is symmetrically arranged on the inner side of the support plate 45. The clamping piece 452 is connected to the support plate 45 through a clamping spring 451. The ductile iron part 5 is inserted between the relative clamping pieces 452. The ductile iron part 5 can be clamped under the clamping force of the clamping spring 451 to ensure the stable rotation of the ductile iron part 5.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cooling structure for heat treatment of ductile iron castings, comprising a sealing shell (1) and a cooling assembly (2) mounted on the upper end of the sealing shell (1), a supporting assembly (4) being arranged at the lower end of the sealing shell (1), and a telescopic rod (3) being mounted at the lower end of the supporting assembly (4), characterized in that: The support assembly (4) comprises a support shell (41) and a servo motor (42) installed in the middle of the lower end of the support shell (41); a transmission component is arranged inside the support shell (41); a support plate (45) is arranged at the end of the transmission component; the cooling assembly (2) comprises a cooler (21) and a flow guide assembly installed at the output end of the cooler (21); an inner cooling pipe (26) and an outer cooling pipe (27) are installed at the end of the flow guide assembly.

2. A cooling structure for heat treatment of ductile iron castings according to claim 1, characterized in that: The sealing shell (1) comprises a support box (11) and a support column (12) installed on the lower side of the support box (11); at least three support columns (12) are provided, and the length of the support column (12) is greater than the total extended length of the support assembly (4) and the telescopic rod (3).

3. A cooling structure for heat treatment of ductile iron castings according to claim 1, characterized in that: The transmission component comprises a driving gear (43) and a plurality of groups of driven gears (44) meshingly connected with the driving gear (43); the middle portion of the driving gear (43) is fixedly connected to the driving end of the servo motor (42); one end of the driven gear (44) is fixedly connected to the support shell (41), and the other end is fixedly connected to the bottom of the support plate (45).

4. A cooling structure for heat treatment of ductile iron castings according to claim 3, characterized in that: A clamping piece (452) is symmetrically arranged on the inner side of the support plate (45), and the clamping piece (452) is connected to the support plate (45) via a clamping spring (451).

5. A cooling structure for heat treatment of ductile iron castings according to claim 1, characterized in that: The flow guide assembly comprises a main flow guide pipe (22) and a plurality of auxiliary flow guide pipes (23) installed at the output end of the main flow guide pipe (22); the input end of the main flow guide pipe (22) is connected to the output end of the cooler (21); the output end of the auxiliary flow guide pipe (23) is provided with a flow guide ring (24); the output end of the flow guide ring (24) is provided with a plurality of groups of flow guide pipes (25); the output ends of the plurality of groups of flow guide pipes (25) are all provided with inner cooling pipes (26) and outer cooling pipes (27); and the plurality of groups of inner cooling pipes (26) and outer cooling pipes (27) correspond to the plurality of groups of support plates (45).

6. A cooling structure for heat treatment of ductile iron castings according to claim 5, characterized in that: The inner cooling tube (26) and the outer cooling tube (27) are provided with guide grooves (271) extending therethrough. The guide grooves (271) are trapezoidal in shape when viewed from above. The guide grooves (271) on the inner cooling tube (26) correspond to the guide grooves (271) on the outer cooling tube (27). The ductile iron part (5) is located between the inner cooling tube (26) and the outer cooling tube (27) which are opposite to each other.

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