Extrusion assembly of vehicle part die-casting forming die

Abstract

The utility model discloses an extrusion assembly of a vehicle part die-casting forming die, which comprises a body, a forming cavity used for forming a vehicle part is arranged in the die-casting forming die, the body is arranged on one side of the forming cavity, a plurality of connecting holes are arranged on the vehicle part, the body comprises a forming pin used for forming the connecting holes, and the connecting holes are arranged on the forming pin. The connecting holes comprise at least one extrusion connecting hole, the forming pins comprise extrusion forming pins used for forming the extrusion connecting holes, extrusion hydraulic oil cylinders are arranged at the ends, away from the extrusion forming holes, of the extrusion forming pins, and the extrusion hydraulic oil cylinders drive the extrusion forming pins to move in the connecting holes through fixed hydraulic pressure. According to the extrusion assembly of the vehicle part die-casting forming die, in the production cooling process of an ultra-large type die-casting die, the bad product phenomenon caused by air holes, shrinkage cavities and the like is eliminated through continuous extrusion.

Description

Technical Field

[0001] The utility model relates to the field of vehicle parts molding dies, in particular to an extrusion component of a vehicle parts die-casting molding die. Background Art

[0002] With the update and iteration of new energy vehicles, super-large die-casting molds play an important role in solving the problem of lightweighting automobiles. Super-large die-casting molds are widely used in the production of auto parts. However, due to the large size and complex structure of super-large die-casting molds, traditional linear cooling, point cooling, and high-pressure point cooling methods cannot effectively control the temperature of the entire part and specific parts, resulting in local deformation of the product, local pores, shrinkage holes and other problems, resulting in the product being unable to meet the use requirements, which has become the core solution demand for the production of super-large die-casting structural parts. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an extrusion component of a die-casting die for vehicle parts, which can eliminate the defective product phenomena such as pores and shrinkage holes by continuous extrusion during the production and cooling process of a super-large die-casting die.

[0004] The technical solution adopted by the utility model to solve the above-mentioned problem is: an extrusion component of a die-casting mold for vehicle parts, including a main body, a molding cavity for molding vehicle parts is provided inside the die-casting mold, the main body is arranged on one side of the molding cavity, the vehicle part is provided with a plurality of connecting holes, the main body includes molding pins for molding connecting holes, the connecting holes include at least one extrusion connecting hole, the molding pins include extrusion molding pins for molding extrusion connecting holes, an extrusion hydraulic cylinder is provided at one end of the extrusion molding pin away from the extrusion molding hole, and the extrusion hydraulic cylinder drives the extrusion molding pin to move in the connecting hole with a fixed hydraulic pressure.

[0005] Compared with the prior art, the utility model has the advantages that: the design of the connection hole is used to ensure the fixed connection between the vehicle parts and the external structure, which is a conventional design structure, and most of the forming pins are also conventionally designed to ensure the forming of the connection hole, and the design of the extruded forming pin can improve the compactness of the connection port during the cooling process of the aluminum alloy solution used to form the vehicle parts, and avoid undesirable phenomena such as pores and shrinkage holes. During the cooling process of the aluminum alloy solution, because the aluminum alloy solution is in the process of changing from liquid to solid and under the influence of thermal expansion and contraction, the compactness of the aluminum alloy during shaping will be reduced, which is easy to cause undesirable phenomena such as pores, shrinkage holes, and diameter reduction. The extruded forming pin can concentrate the volume changes due to the process of changing from liquid to solid and under the influence of thermal expansion and contraction in the extrusion area of ​​the extruded forming pin by extruding the aluminum alloy solution during the cooling process of the aluminum alloy solution, thereby only deepening the depth of the connection hole formed by the extruded forming pin, and will not affect the structure of the connection port, but can improve the compactness of the connection buckle, avoid undesirable phenomena such as pores, shrinkage holes, and diameter reduction, and ensure the forming quality of the vehicle parts.

[0006] As an improvement of the present invention, a connecting port is provided on the side of the vehicle part, and several connecting holes are arranged along the circumference of the connecting port, two of which are extrusion connecting holes. Through the improvement, the connecting port of the vehicle part is used to ensure the structure of the connection stability of the vehicle part, and it has higher dimensional accuracy requirements and strength requirements to meet the assembly quality of the vehicle parts in the combined assembly. At the same time, because the structure of the connecting port is the most difficult to control the cooling effect due to structural differences in the overall structure of the vehicle parts, the structural quality of the connecting port is most likely to have problems. Therefore, in order to ensure the molding quality of the vehicle parts, the most important thing to ensure is the molding quality of the connecting port. After solving the density problem of the connecting port, the occurrence of air holes, shrinkage holes and other undesirable phenomena can be avoided to the greatest extent, thereby ensuring the molding quality of the vehicle parts.

[0007] As an improvement of the utility model, the die-casting mold includes a tungsten alloy heat sink block for forming a connection port, and the tungsten alloy heat sink block is provided with matching through holes corresponding to a plurality of connection holes one by one, and the forming pin passes through the matching through holes for forming the connection hole. Through the improvement, because the cooling control requirements of the connection port are higher, and because the structural differences are difficult to control, the connection port is specially cooled and controlled through the design of the tungsten alloy heat sink block to ensure the cooling stability, and the matching through holes are designed to ensure that the forming pin can smoothly pass through the tungsten alloy heat sink block for forming the connection hole.

[0008] As an improvement of the utility model, a wear-resistant cylinder is provided at the connection between the extruded pin and the tungsten alloy loose pad. Through the improvement, during the extrusion process of the extruded pin, if there is no design of the wear-resistant cylinder, the extruded pin will rub against the tungsten alloy heat sink block. The design of the wear-resistant cylinder can prevent the extruded pin from wearing against the tungsten alloy heat sink block during movement.

[0009] As an improvement of the utility model, the die-casting mold includes an upper die seat and an upper die cavity seat, the upper die seat is used for transmission connection with an external split die hydraulic cylinder, the upper die cavity seat is used for molding the upper end surface of vehicle parts, the upper die cavity seat is detachably fixedly connected to the upper die seat, the extrusion hydraulic cylinder is fixedly connected to the side of the upper die seat away from the molding cavity, the molding pin is arranged through the upper die seat and the upper die cavity seat, and the installation of the extrusion hydraulic cylinder and the molding pin is realized through the improvement.

[0010] As an improvement of the utility model, a guide bushing is provided between the extrusion molding pin and the upper mold cavity seat. Through the improvement, during the extrusion process of the extrusion molding pin, the design of the guide bushing can not only ensure the extrusion direction of the extrusion molding pin during movement and the molding quality of the connecting hole, but also avoid friction between the extrusion molding pin and the upper mold cavity seat.

[0011] As an improvement of the utility model, the main body also includes an integrated board, which is used to simultaneously install and connect multiple forming pins. The integrated board is provided with mounting holes for installing and connecting the forming pins. Through the improvement, the integrated board can install multiple forming pins through the mounting holes, thereby ensuring the relative position relationship between each forming pin, thereby ensuring the forming position of each connecting hole. During demolding, the synchronization of demolding of each forming pin can be better guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the application structure of the extrusion component of the utility model.

[0013] Figure 2 It is a schematic diagram of the structure of the clutch housing of the utility model.

[0014] Figure 3 The utility model is a schematic diagram of the structure of a tungsten alloy heat sink block.

[0015] Figure 4 The utility model is a schematic diagram of the internal cooling tube structure of the tungsten alloy heat sink.

[0016] Figure 5 It is a schematic diagram of the overall mold structure of the utility model.

[0017] Figure 6 It is a schematic diagram of the cross-section connection structure of the extruded pin of the utility model.

[0018] Figure 7 It is a schematic diagram of the connection structure of the integrated board of the utility model.

[0019] As shown in the figure: 1. Clutch housing, 1.1. Connection port, 1.2. Connection hole, 2. Forming pin, 2.1. Extrusion forming pin, 3. Extrusion hydraulic cylinder, 4. Tungsten alloy heat sink, 4.1. Matching through hole, 4.2. Cooling pipe, 5. Wear-resistant cylinder, 6. Upper die seat, 7. Upper die cavity seat, 8. Guide bushing, 9. Integrated board, 9.1. Mounting hole. DETAILED DESCRIPTION

[0020] The embodiments of the present utility model are further described below in conjunction with the accompanying drawings.

[0021] The vehicle component of this embodiment adopts a clutch housing 1.

[0022] like Figure 1-2 As shown, an extrusion assembly of a die-casting mold for vehicle parts includes a main body, a molding cavity for molding a clutch housing 1 is provided inside the die-casting mold, the main body is arranged on one side of the molding cavity, the clutch housing 1 is provided with a plurality of connecting holes 1.2, the main body includes a molding pin 2 for molding the connecting hole 1.2, the connecting hole 1.2 includes two extrusion connecting holes 1.2, the molding pin 2 includes an extrusion molding pin 2.1 for molding the extrusion connecting hole 1.2, an extrusion hydraulic oil cylinder 3 is provided at one end of the extrusion molding pin 2.1 away from the extrusion molding hole, the extrusion hydraulic oil cylinder 3 drives the extrusion molding pin 2.1 to move in the connecting hole 1.2 with a fixed hydraulic pressure, a connecting port 1.1 is provided on the side of the clutch housing 1, and a plurality of the connecting holes 1.2 are arranged along the circumference of the connecting port 1.1, wherein two connecting holes 1.2 are extrusion connecting holes 1.2.

[0023] like Figure 2-4 , Figure 6As shown, the die-casting mold includes a tungsten alloy heat sink 4 for forming a connection port 1.1, and the tungsten alloy heat sink 4 is provided with matching through holes 4.1 corresponding to a plurality of connection holes 1.2, and the forming pin 2 passes through the matching through holes 4.1 for forming the connection holes 1.2, and the connection between the extrusion forming pin 2.1 and the tungsten alloy loose pad is provided with a wear-resistant cylinder 5. The reason why the tungsten alloy heat sink 4 is made of tungsten alloy is that tungsten alloy has a higher melting point, and maintains a higher stability during the clutch housing 1 molding process, and will not affect the molding quality of the clutch housing 1, and the heat transfer efficiency is high, and the temperature control effect of the cooling pipe 4.2 can be fed back faster, so that the connection port 1.1 can be better prevented from having pores, shrinkage holes and other undesirable phenomena. Among them, the cooling pipe 4.2 adopts a multi-layer design, and the multi-layer cooling pipe 4.2 can be designed according to the requirements of the respective cooling areas to ensure the cooling effect, and because the structures of the cooling pipes 4.2 of different layers are different, it can be avoided that the stress of the multi-layer cooling pipe 4.2 inside the tungsten alloy heat sink 4 is concentrated in the same area, so that the service life of the multi-layer cooling pipe 4.2 can be better guaranteed.

[0024] like Figure 5-6 As shown, the die-casting mold includes an upper die seat 6 and an upper die cavity seat 7, the upper die seat 6 is used for transmission connection with an external split die hydraulic cylinder, the upper die cavity seat 7 is used for molding the upper end surface of the clutch housing 1, the upper die cavity seat 7 is detachably fixedly connected to the upper die seat 6, the extrusion hydraulic cylinder 3 is fixedly connected to the side of the upper die seat 6 away from the molding cavity, the molding pin 2 passes through the upper die seat 6 and is arranged with the upper die cavity seat 7, and a guide bushing 8 is arranged between the extrusion molding pin 2.1 and the upper die cavity seat 7. The connection between the upper die seat 6 and the split die hydraulic cylinder and the detachable fixed connection between the upper die seat 6 and the upper die cavity seat 7 are both conventional technologies.

[0025] like Figure 1 , Figure 7 As shown, the main body also includes an integrated board 9, which is used to simultaneously install and connect multiple forming pins 2. The integrated board 9 is provided with a mounting hole 9.1 for installing and connecting the forming pins 2. There are two integrated boards 9 in total, and two extruded forming pins 2.1 are arranged on the same integrated board 9. The conventional forming pin 2 is fixedly connected to the integrated board 9, while the extruded forming pin 9.1 is movably connected to the integrated board 9, and the extrusion hydraulic cylinder 3 is fixedly connected to the integrated board 9.

[0026] When forming the clutch housing 1, the structure of the connection port 1.1 uses the tungsten alloy heat sink 4 to perform temperature adjustment, so that the aluminum alloy solution used to form the connection port 1.1 can be cooled more stably to avoid irregular pores, shrinkage holes, and diameter shrinkage. At the same time, through the design of the extrusion forming pin 2.1, potential pores, shrinkage holes, and diameter shrinkage areas are extruded and eliminated, and concentrated on the extrusion end of the extrusion forming pin 2.1 for forming the connection hole 1.2, thereby improving the forming quality of the connection port 1.1; wherein the temperature of the tungsten alloy heat sink 4 is controlled by the cooling pipe 4.2, so that the cooling rate of the tungsten alloy heat sink 4 is lower than the cooling rate of the aluminum alloy solution; and the extrusion hydraulic cylinder 3 sets a fixed pressure value, and during the cooling process of the aluminum alloy solution, the pressure value stability of the extrusion hydraulic cylinder 3 is guaranteed. During the cooling process, as long as pores and shrinkage holes are formed, they can be extruded and eliminated in time.

[0027] The above description is only for the best embodiment of the utility model, but it cannot be understood as a limitation of the claims. The utility model is not limited to the above embodiments, and its specific structure is allowed to be changed. All changes made within the protection scope of the independent claims of the utility model are within the protection scope of the utility model.

Claims

1. An extrusion assembly of a die-casting mold for vehicle parts, comprising a body, characterized in that: A molding cavity for molding a vehicle part is provided inside the die-casting mold, the body is provided on one side of the molding cavity, the vehicle part is provided with a plurality of connection holes (1.2), the body comprises a molding pin (2) for molding the connection holes (1.2), the connection holes (1.2) comprise at least one extrusion connection hole (1.2), the molding pin (2) comprises an extrusion molding pin (2.1) for molding the extrusion connection hole (1.2), an extrusion hydraulic oil cylinder (3) is provided at one end of the extrusion molding pin (2.1) away from the extrusion molding hole, and the extrusion hydraulic oil cylinder (3) drives the extrusion molding pin (2.1) to move in the connection hole (1.2) with a fixed hydraulic pressure.

2. The extrusion assembly of a die-casting mold for vehicle parts according to claim 1, characterized in that: A connecting port (1.1) is provided on the side of the vehicle part, and a plurality of connecting holes (1.2) are arranged along the circumference of the connecting port (1.1), wherein two connecting holes (1.2) are extrusion connecting holes (1.2).

3. The extrusion assembly of a die-casting mold for vehicle parts according to claim 2, characterized in that: The die-casting mold comprises a tungsten alloy heat sink block (4) for forming a connection port (1.1); the tungsten alloy heat sink block (4) is provided with matching through holes (4.1) corresponding one-to-one to a plurality of connection holes (1.2); and the forming pin (2) passes through the matching through holes (4.1) for forming the connection holes (1.2).

4. The extrusion assembly of a die-casting mold for vehicle parts according to claim 3, characterized in that: A wear-resistant cylinder (5) is provided at the connection between the extrusion-molded pin (2.1) and the tungsten alloy loose pad.

5. The extrusion assembly of a die-casting mold for vehicle parts according to claim 1, characterized in that: The die-casting mold comprises an upper die seat (6) and an upper die cavity seat (7); the upper die seat (6) is used for transmission connection with an external mold splitting hydraulic cylinder; the upper die cavity seat (7) is used for molding the upper end surface of a vehicle part; the upper die cavity seat (7) is detachably fixedly connected to the upper die seat (6); the extrusion hydraulic cylinder (3) is fixedly connected to a side of the upper die seat (6) away from the molding cavity; and the molding pin (2) passes through the upper die seat (6) and is arranged with the upper die cavity seat (7).

6. The extrusion assembly of a die-casting mold for vehicle parts according to claim 5, characterized in that: A guide bushing (8) is provided between the extrusion molding pin (2.1) and the upper die cavity seat (7).

7. The extrusion assembly of a die-casting mold for vehicle parts according to claim 5, characterized in that: The body further comprises an integrated plate (9), wherein the integrated plate (9) is used for simultaneously installing and connecting a plurality of forming pins (2), and the integrated plate (9) is provided with mounting holes (9.1) for installing and connecting the forming pins (2).

Images