Automobile brake knuckle casting mold

Abstract

The utility model discloses an automobile brake knuckle casting mould, it includes the sprue cup, the sprue cup below is provided with the vertical gate lap joint piece, the vertical gate lap joint piece below is connected with the vertical gate, the vertical gate bottom is installed with the filter screen seat, the filter screen seat bottom is connected with the shared riser, the bottom symmetry of shared riser is connected with two castings, the vertical gate both sides symmetry are connected with two first inclined horizontal sprue of inclined upwards, and the first inclined horizontal sprue is connected with the horizontal sprue lap joint piece on, and the horizontal sprue lap joint piece is connected with the second inclined horizontal sprue of inclined upwards, and the second inclined horizontal sprue is connected with the top riser on. Through optimizing on the basis of conventional top riser and shared riser process layout, making the feeding riser inside the casting bearing hole, guaranteeing casting thick heavy hot section position temperature field drop and thin wall other parts temperature drop all the time, reaching the consistency of casting internal density, make the casting internal structure complete and defectless.

Description

Technical Field

[0001] This utility model relates to the field of automotive brake steering knuckle casting technology, and in particular to an automotive brake steering knuckle casting mold. Background Technology

[0002] The brake steering knuckle is a crucial component of an automotive steering system, widely used in various vehicle models. It is a vital part ensuring steering safety, so guaranteeing its quality is paramount to ensuring the proper functioning of a steering system and the safe driving and steering of a vehicle. Currently, its production involves casting a blank, machining it, and then assembling it into the steering system assembly. To ensure the proper functioning of the steering system, the steering knuckle must withstand enormous forces and possess enduring durability. Therefore, substandard mechanical properties in some castings, such as shrinkage cavities or porosity defects within the inner wall around the bearing bore, are absolutely unacceptable.

[0003] Most existing steering knuckle casting molds are like... Figure 5 As shown, each steering knuckle casting in the mold cavity uses a riser at the top and a shared riser in the middle. This layout can easily lead to sequential solidification of the casting during molten iron pouring. This can cause hot spots around the thick parts of the steering knuckle bearing hole and the connecting thick parts, resulting in solidification differences. These differences can increase shrinkage porosity inside the steering knuckle bearing and even cause shrinkage cavities, making the casting fail to meet the standard requirements. In addition, the filter screen used to filter the molten iron usually needs to be cleaned regularly, and the existing filter screen is cumbersome to install and remove. Utility Model Content

[0004] (I) Purpose of the utility model

[0005] In view of this, the purpose of this utility model is to propose a casting mold for automotive brake steering knuckles. The technical problem to be solved is that the existing mold cavity uses a riser at the top and a shared riser in the middle of each steering knuckle casting cavity. This layout process easily leads to sequential solidification of the casting when pouring molten iron. As a result, hot spots will appear around the thick parts of the steering knuckle bearing hole and the connecting thick parts, resulting in solidification differences. These differences will increase the shrinkage porosity of the inner wall of the steering knuckle bearing, and even shrinkage cavities, causing the casting to fail to meet the standard requirements. In addition, the filter screen used to filter molten iron usually needs to be cleaned regularly, and the existing filter screen is cumbersome to install and remove.

[0006] (II) Technical Solution

[0007] To achieve the above technical objectives, this utility model provides a casting mold for automotive brake steering knuckles:

[0008] It includes a pouring cup, a vertical runner overlap plate is provided below the pouring cup, a vertical runner is connected below the vertical runner overlap plate, a filter screen holder is installed at the bottom of the vertical runner, a common riser is connected at the bottom of the filter screen holder, two castings are symmetrically connected at the bottom of the common riser, two first inclined horizontal runners are symmetrically connected on both sides of the vertical runner, a horizontal runner overlap plate is connected to the first inclined horizontal runner, a second inclined horizontal runner is connected to the horizontal runner overlap plate, a top riser is connected to the second inclined horizontal runner, the top riser is connected to the casting, and a feeding riser is connected to the casting.

[0009] Preferably, a U-shaped plate is fixed to the inner wall of both sides of the filter screen holder, and a rectangular frame is slidably connected inside the U-shaped plate, with the filter screen fixed inside the rectangular frame.

[0010] Preferably, there is a gap between one side of the U-shaped plate and the side of the rectangular frame and the filter screen seat, and a sealing cap is used to block the gap.

[0011] Preferably, a disc is provided on one side of the filter screen holder, and a screw is internally threaded onto the disc. One end of the screw is fixed with a pressure plate for abutting against the sealing cover.

[0012] Preferably, side plates are fixed on both sides of the filter screen holder, and positioning holes are provided in the side plates. Connecting plates are fixed on both sides of the disc, and inner cavities are provided in the connecting plates. Positioning plates are slidably connected in the inner cavities, and the positioning plates can be embedded in the positioning holes.

[0013] Preferably, the connecting plate has a travel groove, which is connected to the inner cavity, and a lever is fixed at one end of the positioning plate, which slides within the travel groove.

[0014] Preferably, a spring is provided inside the cavity, with one end of the spring fixed to the inner wall of the cavity and the other end of the spring fixed to the positioning plate.

[0015] As can be seen from the above technical solutions, this application has the following beneficial effects:

[0016] 1: By optimizing the conventional top riser and shared riser process layout, a feeding riser is made inside the bearing hole of the casting to ensure that the temperature field drop at the thick and hot parts of the casting is consistent with the temperature drop at other thin-walled parts, so as to achieve consistent internal density of the casting and make the internal structure of the casting complete and defect-free.

[0017] 2. Insert the rectangular frame into the U-shaped plate to install the filter screen into the filter screen holder. Then seal the filter screen holder with the sealing cover. Press and hold the two levers and bring them close together. Move the positioning plate to the positioning hole and release the levers. At this time, the spring return force will drive the positioning plate to be inserted into the positioning hole, that is, the positioning plate and the side plate are fixed together. Then rotate the screw to drive the pressure plate to move, so that the pressure plate presses and fixes the sealing cover. This method is convenient for the installation and removal of the filter screen. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 A schematic diagram of the structure of a casting mold for an automotive brake steering knuckle provided by this utility model;

[0020] Figure 2 A front view cross-sectional structural diagram of the filter screen holder provided by this utility model;

[0021] Figure 3 A top view cross-sectional structural diagram of the filter screen holder provided by this utility model;

[0022] Figure 4 A top view cross-sectional structural diagram of the connecting plate provided by this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of a casting mold for an automotive brake steering knuckle in the prior art.

[0024] Figure descriptions: 1. Pour cup; 2. Vertical runner overlap piece; 3. Vertical runner; 4. Filter screen holder; 5. Common riser; 6. Casting; 7. First inclined horizontal runner; 8. Horizontal runner overlap piece; 9. Second inclined horizontal runner; 10. Top riser; 11. Feeding riser; 12. U-shaped plate; 13. Rectangular frame; 14. Filter screen; 15. Gap; 16. Sealing cap; 17. Side plate; 18. Positioning hole; 19. Disc; 20. Screw; 21. Pressure plate; 22. Connecting plate; 23. Inner cavity; 24. Positioning plate; 25. Spring; 26. Stroke groove; 27. Lever. Detailed Implementation

[0025] The following description is exemplary in nature and is not intended to limit the scope, application, or use of this disclosure. It should be understood that in all these figures, the same or similar reference numerals indicate the same or similar parts and features. The figures are merely schematic representations of the concept and principles of embodiments of this disclosure and do not necessarily show the specific dimensions and scale of the various embodiments of this disclosure. Certain details or structures of embodiments of this disclosure may be exaggerated in particular portions of certain figures.

[0026] Reference Figure 1-5 :

[0027] In one embodiment of this utility model, a casting mold for an automotive brake steering knuckle is provided, including a pouring cup 1, a vertical runner overlapping piece 2 is provided below the pouring cup 1, a vertical runner 3 is connected below the vertical runner overlapping piece 2, a filter screen seat 4 is installed at the bottom of the vertical runner 3, a common riser 5 is connected at the bottom of the filter screen seat 4, two castings 6 are symmetrically connected at the bottom of the common riser 5, two first inclined horizontal runners 7 are symmetrically connected on both sides of the vertical runner 3, a horizontal runner overlapping piece 8 is connected to the first inclined horizontal runner 7, a second inclined horizontal runner 9 is connected to the horizontal runner overlapping piece 8, a top riser 10 is connected to the second inclined horizontal runner 9, the top riser 10 is connected to the casting 6, and a feeding riser 11 is connected to the casting 6.

[0028] In use, molten iron enters the vertical runner lap joint 2 through the pouring cup 1 and then enters the vertical runner 3. In the vertical runner 3, a portion of the molten iron is diverted, passing through the filter screen seat 4 and entering the common riser 5, then into the casting 6, and finally into the feeding riser 11. The other portion of the molten iron enters the horizontal runner lap joint 8 through the first inclined horizontal runner 7 and then into the second inclined horizontal runner 9, then into the top riser 10, and then into the casting 6. Finally, the molten iron flows into the feeding riser 11. By optimizing the conventional process layout of the top riser 10 and the common riser 5, the feeding riser 11 is made inside the bearing hole of the casting 6. This ensures that the temperature drop at the thick and hot parts of the casting is consistent with the temperature drop at other thin-walled parts, achieving consistent internal density of the casting and making the internal structure of the casting complete and defect-free.

[0029] The filter base 4 has U-shaped plates 12 fixed to the inner walls on both sides. A rectangular frame 13 is slidably connected inside the U-shaped plate 12, and a filter screen 14 is fixed inside the rectangular frame 13. There is a gap 15 between one side of the U-shaped plate 12 and the rectangular frame 13 and the other side of the filter base 4. A sealing cap 16 is plugged into the gap 15. A disc 19 is provided on one side of the filter base 4. A screw 20 is threaded into the disc 19. A pressure plate 21 for abutting the sealing cap 16 is fixed to one end of the screw 20. Side plates 17 are fixed to both sides of the filter base 4. The side plates 17 have openings in them. A connecting plate 22 is fixed on both sides of the positioning hole 18 and the disc 19. An inner cavity 23 is opened in the connecting plate 22. A positioning plate 24 is slidably connected in the inner cavity 23. The positioning plate 24 can be embedded in the positioning hole 18. A stroke groove 26 is opened in the connecting plate 22. The stroke groove 26 is connected to the inner cavity 23. A lever 27 is fixed at one end of the positioning plate 24. The lever 27 is slidably engaged in the stroke groove 26. A spring 25 is provided in the inner cavity 23. One end of the spring 25 is fixed to the inner wall of the inner cavity 23, and the other end of the spring 25 is fixed to the positioning plate 24.

[0030] When it is necessary to clean the filter screen 14 inside the filter screen holder 4, press and hold both levers 27 and move them closer together. When the levers 27 move, they drive the positioning plate 24 to move, causing the positioning plate 24 to move out of the positioning hole 18. This allows the disc 19, positioning plate 24, and pressure plate 21 to be removed, so that the pressure plate 21 no longer abuts against the sealing cover 16. Then, remove the sealing cover 16 to remove the filter screen 14 from the filter screen holder 4, making it convenient to clean the filter screen 14. After cleaning the filter screen 14, the rectangular frame 13 is embedded in the U. Inside the mold plate 12, the filter screen 14 is installed into the filter screen holder 4. Then, the sealing cover 16 seals the filter screen holder 4. Next, press and hold the two levers 27 and bring them closer together. Then, move the positioning plate 24 to the positioning hole 18 and release the levers 27. At this time, under the rebound force of the spring 25, the positioning plate 24 is driven to be embedded in the positioning hole 18, that is, the positioning plate 24 and the side plate 17 are fixed together. Then, rotate the screw 20 to drive the pressure plate 21 to move, so that the pressure plate 21 presses and fixes the sealing cover 16. This method is convenient for the installation and removal of the filter screen 14.

[0031] The exemplary implementation of the solution proposed in this disclosure has been described in detail above with reference to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the spirit of this disclosure, and various combinations can be made to the various technical features and structures proposed in this disclosure without exceeding the protection scope of this disclosure, which is determined by the appended claims.

Claims

1. A casting mold for an automotive brake steering knuckle, comprising a pouring cup (1), characterized in that, A vertical runner overlap plate (2) is provided below the pouring cup (1). A vertical runner (3) is connected below the vertical runner overlap plate (2). A filter screen holder (4) is installed at the bottom of the vertical runner (3). A common riser (5) is connected at the bottom of the filter screen holder (4). Two castings (6) are symmetrically connected at the bottom of the common riser (5). Two inclined first horizontal runners (7) are symmetrically connected on both sides of the vertical runner (3). A horizontal runner overlap plate (8) is connected on the first inclined horizontal runner (7). An inclined second horizontal runner (9) is connected on the horizontal runner overlap plate (8). A top riser (10) is connected on the second inclined horizontal runner (9). The top riser (10) is connected to the casting (6). A feeding riser (11) is connected on the casting (6).

2. The automotive brake steering knuckle casting mold according to claim 1, characterized in that, The filter holder (4) has U-shaped plates (12) fixed on both inner walls. A rectangular frame (13) is slidably connected inside the U-shaped plate (12), and a filter (14) is fixed inside the rectangular frame (13).

3. The automotive brake steering knuckle casting mold according to claim 2, characterized in that, There is a gap (15) on one side of the U-shaped plate (12) and the rectangular frame (13) away from the filter screen seat (4), and a sealing cap (16) is blocked in the gap (15).

4. The automotive brake steering knuckle casting mold according to claim 3, characterized in that, A disc (19) is provided on one side of the filter screen holder (4), and a screw (20) is threadedly connected to the disc (19). One end of the screw (20) is fixed with a pressure plate (21) for abutting against the sealing cover (16).

5. A casting mold for an automotive brake steering knuckle according to claim 4, characterized in that, The filter screen holder (4) has side plates (17) fixed on both sides. The side plates (17) have positioning holes (18). The disc (19) has connecting plates (22) fixed on both sides. The connecting plates (22) have inner cavities (23). The inner cavities (23) have slidably connected positioning plates (24). The positioning plates (24) can be embedded in the positioning holes (18).

6. A casting mold for an automotive brake steering knuckle according to claim 5, characterized in that, The connecting plate (22) has a travel groove (26) inside, the travel groove (26) is connected to the inner cavity (23), and a lever (27) is fixed at one end of the positioning plate (24), the lever (27) is slidably engaged in the travel groove (26).

7. A casting mold for an automotive brake steering knuckle according to claim 6, characterized in that, A spring (25) is provided inside the inner cavity (23). One end of the spring (25) is fixed to the inner wall of the inner cavity (23), and the other end of the spring (25) is fixed to the positioning plate (24).

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