Automobile differential carrier forming die with good cooling effect

Abstract

The automobile differential carrier forming die comprises a shell, a lower die is fixedly connected into the shell, a plurality of heat dissipation grid plates are evenly distributed on the outer wall of the lower die, one side of the shell is fixedly connected with a connecting plate in a communicating mode, and the end, away from the shell, of the connecting plate is fixedly connected with a fan in a communicating mode. The two water spraying pipes are symmetrically distributed and fixedly connected to the side, close to the connecting plate, in the shell, the multiple nozzles are evenly distributed and fixedly connected to the two sides of each water spraying pipe in a communicating mode, heat is conducted to the heat dissipation grid plate, the draught fan blows air into the shell, airflow takes away the heat on the heat dissipation grid plate for cooling, a small amount of water mist is sprayed out through the nozzles, and the cooling effect is improved. The water mist evaporates under the action of heat, the heat is further taken away, the cooling effect is evenly improved, the situation that the temperature difference is too large, stress is generated at the lower die, damage occurs, airflow and water vapor pass through the filter cloth is avoided, residual cooling water flows back into the water tank from the flow guide groove to be recycled, and waste is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile differential case forming dies, in particular to an automobile differential case forming dies with good cooling effect. Background Art

[0002] Hot extrusion is to heat the metal material to the hot forging temperature for extrusion, that is, to heat the blank to a temperature above the recrystallization temperature of the metal before extrusion. Hot extrusion can not only form non-ferrous metals and their alloys with good plasticity and relatively low strength, low and medium carbon steel, but also form high-carbon and high-alloy steel with high strength, such as special structural steel, stainless steel, high-speed tool steel and heat-resistant steel.

[0003] The differential case of a car is an important component of the car differential. The power of the engine enters the differential through the driven shaft of the transmission and directly drives the differential case. The requirements for the differential case are relatively high, especially for its mechanical properties and torque strength. At present, the hot extrusion forming die for the front case of the differential cannot quickly cool and form the workpiece when processing the workpiece, which affects the processing efficiency. In addition, it is inconvenient for workers to take out the processed workpiece after the workpiece is processed, which further affects the processing efficiency.

[0004] The Chinese patent with the authorization announcement number CN216324247U discloses a hot extrusion forming die for the blank of the front housing of an automobile differential, including an upper die and a lower die, the inner wall of the lower die is slidably connected with a lifting block, the top of the lifting block is provided with a mold cavity, the left and right sides of the lower die are fixedly connected with electric push rods, the tops of the two electric push rods are fixedly connected with the lifting block, the bottom of the lower die is provided with a cooling device, the top of the cooling device is connected with the lifting block, the bottom of the lifting block is provided with an ejection device, and the bottom of the ejection device is connected with the cooling device. In this utility model, during the cooling and forming process of the workpiece, the coolant will circulate inside the water tank, the water tank, the cooling pipe, the groove and the water outlet pipe, and the refrigerator is used to cool the coolant, so that the coolant can circulate to cool the workpiece, thereby improving the cooling effect of the device.

[0005] However, the above patent has the following disadvantages:

[0006] During the hot extrusion process, the lower die not only has to withstand the extrusion force, but also has to withstand the high temperature of the workpiece. The above-mentioned patent circulates coolant in the cooling tube, and the coolant is cooled by the refrigerator after returning to the water tank. As a result, the above-mentioned patent cannot evenly control the cooling effect during cooling, and a huge temperature difference is formed inside and outside the lower die, generating stress. The lower die is in a state of being extruded, which can easily lead to cracks in the lower die and damage the lower die. Utility Model Content

[0007] In order to overcome the deficiencies of the prior art, the technical problem to be solved by the present utility model is that when the workpiece needs to be cooled, the heat of the workpiece is conducted to the heat dissipation grid plate, and at the same time, the fan blows air into the shell, and the heat on the heat dissipation grid plate is taken away by the air flow for cooling. Subsequently, water is injected into the water spray pipe by the high-pressure water pump and a small amount of water mist is sprayed out from the nozzle. The water mist evaporates under the action of the air flow and the heat on the heat dissipation grid plate, further taking away the heat. And by controlling the high-pressure water pump to gradually increase the water pressure to increase the water spray amount at the nozzle, the cooling effect is evenly improved, avoiding the generation of stress at the lower die due to excessive temperature difference and damage. The air flow and water vapor pass through the filter cloth, and the remaining cooling water flows back to the water tank through the diversion groove for recycling, avoiding waste.

[0008] In order to achieve the above object, the present utility model provides the following technical solution: A forming die for an automotive differential housing with good cooling effect, comprising a shell, a lower die fixedly connected inside the shell, a plurality of heat dissipation grid plates evenly distributed on the outer wall of the lower die, a connecting plate fixedly connected and communicated on one side of the shell, a fan fixedly connected and communicated at the end of the connecting plate away from the shell, and two water spray pipes symmetrically distributed and fixedly connected on one side of the shell close to the connecting plate, and a plurality of nozzles are evenly distributed and fixedly connected on both sides of each water spray pipe.

[0009] The air flow generated by the fan cooperates with the sprayed water mist to achieve a good cooling and temperature reduction effect, and by gradually increasing the water spray amount, the cooling effect can be evenly controlled, realizing linear cooling, and avoiding the generation of large temperature differences and stress to damage the lower die.

[0010] Further, a frame is fixedly connected to the end of the shell away from the connecting plate, a breathable filter cloth is fixedly connected inside the frame, and a plurality of support rods are fixedly connected around the lower die inside the shell, and each support rod is fixedly connected to each heat dissipation grid plate.

[0011] Further, a water tank is fixedly connected to the bottom of the shell, two high-pressure water pumps are symmetrically distributed and fixedly connected inside the water tank, and a water pipe is connected between the top of each high-pressure water pump and the water spray pipe.

[0012] Further, two downwardly concave diversion grooves are symmetrically distributed on the bottom of the shell, and the bottom of each diversion groove penetrates and communicates with the inside of the water tank.

[0013] The remaining cooling water in the shell flows back to the water tank through the diversion groove for recycling, avoiding waste.

[0014] In summary, compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] (1) The airflow generated by the fan cooperates with the sprayed water mist to achieve a good cooling effect. By gradually increasing the water spray volume, the cooling effect can be evenly controlled, achieving linear cooling and avoiding the generation of large temperature differences that may cause stress and damage to the lower mold.

[0016] (2) The residual cooling water in the shell flows back to the water tank through the diversion groove for recycling, avoiding waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a front view of the overall structure of the present invention;

[0019] Figure 3 It is a schematic sectional structure diagram at A-A of the present invention;

[0020] Figure 4 It is an enlarged schematic structure diagram of B of the present invention;

[0021] Figure 5 It is an exploded schematic diagram of some parts of the present invention; DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0023] Refer to Figures 1-5 , a forming mold for an automotive differential housing with good cooling effect, including a housing 24, a lower mold 20 is fixedly connected inside the housing 24, a plurality of heat dissipation grid plates 29 are evenly distributed on the outer wall of the lower mold 20, a connecting plate 26 is fixedly connected and communicated on one side of the housing 24, and a fan 27 (only schematically shown in the figure) is fixedly connected and communicated at one end of the connecting plate 26 away from the housing 24. Two water spray pipes 31 are symmetrically distributed and fixedly connected on one side of the housing 24 close to the connecting plate 26, and a plurality of nozzles 32 are evenly distributed and fixedly connected and communicated on both sides of each water spray pipe 31.

[0024] The airflow generated by the fan 27 cooperates with the sprayed water mist to achieve a good cooling effect. By gradually increasing the water spray volume, the cooling effect can be evenly controlled, achieving linear cooling and avoiding the generation of large temperature differences that may cause stress and damage to the lower mold 20.

[0025] Refer to Figure 3 、 5, one end of the housing 24 away from the connecting plate 26 is fixedly connected with a frame 25, and a breathable filter cloth 28 is fixedly connected inside the frame 25. A plurality of support rods 30 are fixedly connected inside the housing 24 around the lower die 20, and each support rod 30 is fixedly connected with each heat dissipation grille 29.

[0026] Reference Figure 3 , the bottom of the housing 24 is fixedly connected with a water tank 17. Two high-pressure water pumps 18 are symmetrically distributed and fixedly connected inside the water tank 17. A water pipe 14 is connected between the top end of each high-pressure water pump 18 and the spray pipe 31.

[0027] Reference Figure 5 , two downwardly concave diversion grooves 33 are symmetrically distributed and opened at the bottom of the housing 24, and the bottom of each diversion groove 33 penetrates and communicates with the inside of the water tank 17.

[0028] The residual cooling water in the housing 24 flows back into the water tank 17 from the diversion groove 33 for recycling, avoiding waste.

[0029] In this embodiment, initially, the power supply and the control system of this patent are connected, and this patent is used as the lower die for hot extrusion processing. After the extrusion processing is completed, the heat of the workpiece is conducted to the heat dissipation grille 29, and then the fan 27 is started to blow air into the housing 24, and the heat on the heat dissipation grille 29 is taken away by the air flow for cooling, accelerating the cooling and shaping speed of the workpiece and improving the processing efficiency.

[0030] Meanwhile, water is injected into the spray pipe 31 through the high-pressure water pump 18 and a small amount of water mist is sprayed out from the spray head 32. The water mist evaporates under the action of the air flow and the heat on the heat dissipation grille 29, further taking away heat and improving the cooling effect. By controlling the high-pressure water pump 18 to gradually increase the water pressure to increase the water spray amount at the spray head 32, the cooling effect is uniformly improved to achieve a linear cooling effect, avoiding stress generation and damage at the lower die 20 due to excessive temperature difference.

[0031] During the cooling process, the air flow and water vapor pass through the filter cloth 28, and the residual cooling water is intercepted by the filter cloth 28 and finally flows back into the water tank 17 from the diversion groove 33 for recycling, avoiding waste.

[0032] As certain terms are used in the specification and claims to refer to particular components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as the criterion for distinction. As the term "comprising" mentioned throughout the specification and claims is an open-ended term, it should be interpreted as "including but not limited to". "Substantially" means within an acceptable error range. Those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0033] It should be noted that the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a commodity or system comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such commodity or system. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of additional identical elements in the commodity or system comprising the said element.

[0034] The above description illustrates and describes several preferred embodiments of the present application. However, as previously mentioned, it should be understood that the present application is not limited to the forms disclosed herein, should not be regarded as an exclusion of other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the application concept described herein through the above teachings or the technology or knowledge in the relevant field. Any changes and variations made by those skilled in the art without departing from the spirit and scope of the present application shall fall within the protection scope of the appended claims of the present application.

Claims

1. A molding die for a differential case of an automobile with good cooling effect, characterized in that: The invention comprises a shell (24), a lower mold (20) is fixedly connected inside the shell (24), a plurality of heat dissipation grids (29) are evenly distributed on the outer wall of the lower mold (20), a connecting plate (26) is fixedly connected to one side of the shell (24), an end of the connecting plate (26) away from the shell (24) is fixedly connected to a fan (27), two water spray pipes (31) are symmetrically distributed and fixedly connected at one side of the shell (24) close to the connecting plate (26), and a plurality of spray heads (32) are evenly distributed and fixedly connected on both sides of each water spray pipe (31).

2. The automotive differential case forming die with good cooling effect according to claim 1, characterized in that: One end of the shell (24) away from the connecting plate (26) is fixedly connected to a frame (25), and a breathable filter cloth (28) is fixedly connected inside the frame (25).

3. The automotive differential case forming die with good cooling effect according to claim 1, characterized in that: A plurality of support rods (30) are fixedly connected to the shell (24) at the periphery of the lower mold (20), and each support rod (30) is fixedly connected to each heat dissipation grid plate (29).

4. The automotive differential case forming die with good cooling effect according to claim 1, characterized in that: A water tank (17) is fixedly connected to the bottom of the housing (24), and two high-pressure water pumps (18) are symmetrically distributed and fixedly connected inside the water tank (17).

5. The automobile differential case forming die with good cooling effect according to claim 4, characterized in that: A water pipe (14) is connected between each high-pressure water pump (18) and the top end of the water spray pipe (31).

6. The automotive differential case forming die with good cooling effect according to claim 1, characterized in that: The bottom of the housing (24) is symmetrically provided with two downwardly recessed guide grooves (33), and the bottom of each guide groove (33) penetrates and communicates with the interior of the water tank (17).

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