A mold for improving the demolding deformation of a long arm knuckle

Abstract

The utility model belongs to low pressure pouring technical field, specifically disclose a mould for improving long arm knuckle demoulding deformation, including upper die, lower die and casting cavity, upper die set on the lower die, the parting surface between upper die and lower die is split surface, casting cavity be located between upper die and lower die, the left end of casting cavity is equipped with process block, process block be located in the lower end of upper die, process block is rectangle plane, process block is perpendicular to split surface, process block symmetry sets up on the front and rear end face of casting cavity left end, the lower end of process block is located on split surface, this mould simple structure, only need to put forward the scheme in the development early stage with mould factory, no additional cost investment, be applicable to daily production process, this mould when using, both will not damage the surface of casting body, also will not reduce production efficiency, and can effectively improve the production quality of product, avoid casting deformation.

Description

Technical Field

[0001] This utility model belongs to the field of low-pressure casting technology, specifically relating to a mold for improving the demolding deformation of a long boom steering knuckle. Background Technology

[0002] The steering knuckle is a crucial component of the automotive steering axle, enabling stable vehicle movement and sensitive directional transmission. Its function is to transmit and bear the load from the front of the vehicle, supporting and driving the front wheels to rotate around the kingpin, thus steering the car. During vehicle operation, it withstands varying impact loads, therefore requiring high strength.

[0003] With the trend towards lightweight vehicles, aluminum alloy is increasingly being used for steering knuckles. However, aluminum alloy steering knuckles are mostly produced using low-pressure casting. When the steering knuckle is molded, the long arm end of the steering knuckle is subjected to the pulling force of the lower mold, which causes the front end of the steering knuckle to deform. If the deformed steering knuckle is installed on a car, it will pose a great threat to driving safety.

[0004] In existing technologies, steering knuckle deformation is generally prevented by controlling the temperature of the molten aluminum and the mold, and by spraying graphite coating inside the casting cavity. This method reduces the probability of steering knuckle deformation to some extent, but cannot completely eliminate steering knuckle demolding deformation. Utility Model Content

[0005] To address the problems existing in the background technology, this utility model provides a mold for improving the demolding deformation of a long boom steering knuckle. The mold has a process block set at the upper mold position at the front end of the casting. The draft angle of the process block is zero degrees. When the mold is opened, the process block can effectively increase the bonding force between the casting and the upper mold. When the mold is opened, since the pulling force of the upper mold is greater than that of the lower mold, the steering knuckle can be smoothly demolded from the lower mold, thereby improving the deformation of the casting front end caused by the pulling force of the lower mold when the mold is opened.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a mold for improving the demolding deformation of a long boom steering knuckle, comprising an upper mold, a lower mold, and a casting cavity, wherein the upper mold is fastened to the lower mold, and the dividing surface between the upper mold and the lower mold is the parting surface; the casting cavity is located between the upper mold and the lower mold; a process block is provided at the left end of the casting cavity; the process block is located at the lower end of the upper mold.

[0007] The process block is a rectangular plane, and the process block is perpendicular to the parting surface.

[0008] The process blocks are symmetrically arranged on the front and rear end faces of the left end of the casting cavity, with the lower end of the process block located on the parting surface.

[0009] The casting cavity is provided with a feed port at the lower end.

[0010] The beneficial effects of this utility model are as follows: This utility model provides a mold for improving the demolding deformation of long arm steering knuckles. The mold has a simple structure, only requires a proposal to the mold factory in the early stage of development, and has no additional cost investment. It is suitable for daily production processes. When using this mold, it will not damage the surface of the casting body, nor will it reduce production efficiency. It can also effectively improve the production quality of the product and avoid casting deformation. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the casting cavity.

[0012] Figure 2 This is a schematic diagram of the upper and lower molds being closed.

[0013] Figure 3 This is a schematic diagram of the upper and lower molds opening.

[0014] In the diagram: 1. Upper mold, 2. Lower mold, 3. Casting cavity, 4. Process block, 5. Parting surface, 6. Feed port. Detailed Implementation

[0015] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0016] The following detailed description of the specific embodiments of this utility model, in conjunction with the accompanying drawings, illustrates the following: A mold for improving the demolding deformation of a long boom steering knuckle includes an upper mold 1, a lower mold 2, and a casting cavity 3. The upper mold 1 is fastened to the lower mold 2, and the dividing surface between the upper mold 1 and the lower mold 2 is a parting surface 5. The casting cavity 3 is located between the upper mold 1 and the lower mold 2, and a feed inlet 6 is provided at the lower end of the casting cavity 3. A process block 4 is provided at the left end of the casting cavity 3. The process block 4 is located at the lower end of the upper mold 1. The process block 4 is a rectangular plane, and the process block 4 is perpendicular to the parting surface 5. The process block 4 is perpendicular to the parting surface 5, and the draft angle at the process block 4 is zero degrees, which is less than the draft angle of the lower mold 2. At this time, the mold opening pull required at the process block 4 is greater than the mold opening pull of the lower mold 2. The process blocks 4 are symmetrically arranged on the front and rear end faces of the left end of the casting cavity 3, and the lower end of the process blocks 4 is located on the parting surface 5. When the mold is opened, in order to avoid the long arm end of the steering knuckle from twisting due to uneven force and affecting the quality of the casting, the process blocks 4 are symmetrically arranged on the front and rear end faces of the casting cavity 3.

[0017] The usage process of this utility model is as follows: First, the upper mold 1 is fastened onto the lower mold 2 and fixed; then, the installed mold is installed on the low-pressure casting platform, and the feed port 6 is connected to the feed pipe; after installation, casting is performed; after casting is completed, the upper mold 1 is lifted from the top; when the upper mold 1 is lifted, because the draft angle at the process block 4 is zero degrees, the mold opening pull required at the process block 4 is greater than the mold opening pull of the lower mold 2, and the casting completed will be lifted together with the upper mold 1, thereby avoiding deformation of the steering knuckle and improving the quality of the casting.

[0018] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0019] The parts of this utility model not described in detail are existing technologies.

Claims

1. A mold for improving the demolding deformation of a long boom steering knuckle, comprising an upper mold (1), a lower mold (2), and a casting cavity (3), characterized in that: The upper mold (1) is fastened to the lower mold (2), and the dividing surface between the upper mold (1) and the lower mold (2) is the parting surface (5); the casting cavity (3) is located between the upper mold (1) and the lower mold (2); a process block (4) is provided at the left end of the casting cavity (3); the process block (4) is located at the lower end of the upper mold (1).

2. The mold for improving the demolding deformation of a long boom steering knuckle according to claim 1, characterized in that: The process block (4) is a rectangular plane and is perpendicular to the parting surface (5).

3. The mold for improving the demolding deformation of a long boom steering knuckle according to claim 2, characterized in that: The process block (4) is symmetrically arranged on the front and rear end faces of the left end of the casting cavity (3), and the lower end of the process block (4) is located on the parting surface (5).

4. The mold for improving the demolding deformation of a long boom steering knuckle according to claim 1, characterized in that: The lower end of the casting cavity (3) is provided with a feed inlet (6).

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