Steering knuckle forming mold based on low-pressure casting and bottom pouring type pouring technology

Abstract

The utility model provides a knuckle forming die based on low-pressure casting and bottom pouring technology, which comprises a rack, a low-pressure casting feeding device is arranged at the bottom of the rack, a bottom pouring device is arranged at the top of the rack, and a sand discharge guide groove is arranged on the rear side of the top of the rack. The low-pressure casting feeding device comprises a crucible tank arranged at the bottom of a rack, a mounting bottom plate is arranged on the left side of the rack, an air storage tank is fixedly mounted at the top of the mounting bottom plate, and the right side of the crucible tank communicates with an air guide pipe; the bottom pouring type pouring device is installed through the arrangement of the rack, molten metal is pressurized and conveyed to the bottom of the bottom pouring type pouring device through the arrangement of the low-pressure casting feeding device, the bottom of the bottom pouring type pouring device slowly extends upwards, and then bottom pouring type pouring is achieved. And the problem of defective products caused by the fact that internal air cannot be exhausted is avoided.

Description

Technical Field

[0001] This utility model relates to the field of steering knuckle manufacturing technology, specifically to a steering knuckle forming mold based on low-pressure casting and bottom-pouring technology. Background Technology

[0002] The steering knuckle, also known as the "steering knuckle," is one of the important components of the automotive steering axle. It enables the vehicle to drive stably and transmit driving direction sensitively. The function of the steering knuckle is to transmit and bear the load of the front of the vehicle, support and drive the front wheels to rotate around the kingpin to steer the vehicle. When the vehicle is in motion, it bears varying impact loads, therefore, it is required to have high strength.

[0003] There are two production methods for steering knuckles: forging and casting. Casting often requires casting molds, such as the automotive steering knuckle forming mold disclosed in CN215508866U. This mold uses four sets of cavities to cast four products simultaneously, improving production efficiency. It also uses two sets of cooling pipes to cool down the product, accelerating the forming process and further improving work efficiency. Although this solution can achieve rapid cooling after casting, in actual use, the molten material is injected from the top. As the mold cools after the previous casting is formed, the molten material enters the bottom of the mold and solidifies rapidly. This prevents air from escaping from the bottom of the mold, resulting in a large number of defective castings that cannot meet production needs. Utility Model Content

[0004] The present invention aims to solve the problems mentioned in the background art by providing a steering knuckle forming mold based on low-pressure casting and bottom-pouring technology.

[0005] The specific technical solution is as follows:

[0006] A steering knuckle forming mold based on low-pressure casting and bottom-pouring technology includes a frame, a low-pressure casting feeding device at the bottom of the frame, a bottom-pouring device at the top of the frame, and a sand discharge guide groove on the rear side of the top of the frame.

[0007] The low-pressure casting feeding device includes a crucible tank located at the bottom of the frame. A mounting base plate is located on the left side of the frame. A gas storage tank is fixedly installed on the top of the mounting base plate. A gas guide pipe is connected to the right side of the crucible tank. A feeding pipe is inserted inside the crucible tank. The top of the feeding pipe passes through the frame and extends to the top of the frame. A second solenoid valve is connected to the top of the crucible tank and to the right side of the feeding pipe.

[0008] The bottom-pouring casting device includes a mold slot fixedly installed on the top of the frame. A cover plate is provided on the top of the mold slot. A funnel-shaped vent is opened inside the cover plate. A sealing plate is provided on the rear side of the mold slot. The top of the feed pipe is connected to the mold slot.

[0009] As a preferred embodiment of this utility model, the mold groove has two mounting grooves inside, and a second electric push rod is fixedly installed inside the mounting groove. The output end of the second electric push rod is fixedly connected to the front side of the sealing plate.

[0010] As a preferred embodiment of this utility model, an arched frame is fixedly installed on the top of the frame, and a first electric push rod is fixedly installed on the top of the arched frame. The output end of the first electric push rod passes through the arched frame and is fixedly connected to the top of the cover plate.

[0011] In a preferred embodiment of this utility model, an air compressor is fixedly installed on the top of the air storage tank, and the output end of the air compressor is connected to the air storage tank.

[0012] As a preferred embodiment of this utility model, a first solenoid valve is connected to the right side of the gas storage tank, and the right side of the first solenoid valve is connected to the left side of the gas guide pipe.

[0013] As a preferred embodiment of this utility model, a material guide pipe is connected to the right side of the crucible, and a sealing cap is threadedly connected to the right side of the material guide pipe.

[0014] As a preferred embodiment of this utility model, the crucible is composed of two parts and is fixedly connected by bolts.

[0015] This utility model has the following beneficial effects:

[0016] The steering knuckle forming mold based on low-pressure casting and bottom-pouring technology provided by this utility model uses a frame to install a bottom-pouring device, and a low-pressure casting feeding device to pressurize and deliver molten metal to the bottom of the bottom-pouring device. The bottom of the bottom-pouring device slowly extends upward, thereby achieving bottom-pouring and avoiding the problem of defective products caused by the inability to expel internal air, thus meeting production needs. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure of the steering knuckle forming mold based on low-pressure casting and bottom-pouring technology provided in this embodiment of the utility model;

[0018] Figure 2 A schematic diagram of the frame structure of a steering knuckle forming mold based on low-pressure casting and bottom-pouring technology provided for an embodiment of this utility model;

[0019] Figure 3 A schematic diagram of the cover plate driving device of the steering knuckle forming mold based on low-pressure casting and bottom pouring technology provided for an embodiment of this utility model;

[0020] Figure 4 A schematic diagram of the high-pressure gas supply structure of a steering knuckle forming mold based on low-pressure casting and bottom-pouring technology provided for an embodiment of this utility model;

[0021] Figure 5 A schematic diagram of a low-pressure casting feeding device for a steering knuckle forming mold based on low-pressure casting and bottom-pouring technology, provided for an embodiment of this utility model.

[0022] Figure 6 A schematic diagram of the isometric structure of a low-pressure casting feeding device for a steering knuckle forming mold based on low-pressure casting and bottom-pouring technology, provided for an embodiment of this utility model.

[0023] Figure 7 A schematic diagram of the sealing plate and driving device structure of the steering knuckle forming mold based on low-pressure casting and bottom-pouring technology provided in this embodiment of the utility model.

[0024] In the attached diagram: 1. Frame; 2. Arched frame; 3. Low-pressure casting feeding device; 301. Crucible; 302. Feed pipe; 303. Sealing cover; 304. Air compressor; 305. Air tank; 306. Mounting base plate; 307. First solenoid valve; 308. Air pipe; 309. Feed pipe; 310. Second solenoid valve; 4. First electric push rod; 5. Bottom-pouring casting device; 501. Cover plate; 502. Funnel-shaped exhaust port; 503. Mold groove; 504. Sealing plate; 505. Second electric push rod; 6. Sand discharge guide groove. Detailed Implementation

[0025] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0027] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0028] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Example

[0030] The steering knuckle forming mold based on low-pressure casting and bottom-pouring technology provided in this embodiment is as follows: Figures 1-7 As shown, the machine includes a frame 1, a low-pressure casting feeding device 3 is provided at the bottom of the frame 1, a bottom-pouring casting device 5 is provided at the top of the frame 1, and a sand discharge guide groove 6 is provided on the rear side of the top of the frame 1.

[0031] The low-pressure casting feeding device 3 includes a crucible jar 301 located at the bottom of the frame 1. A mounting base plate 306 is located on the left side of the frame 1. A gas storage tank 305 is fixedly installed on the top of the mounting base plate 306. A gas guide pipe 308 is connected to the right side of the crucible jar 301. A feeding pipe 309 is inserted inside the crucible jar 301. The top of the feeding pipe 309 passes through the frame 1 and extends to the top of the frame 1. A second solenoid valve 310 is connected to the top of the crucible jar 301 and to the right side of the feeding pipe 309.

[0032] The effects achieved by the above structure are as follows: the crucible jar 301 is used to hold molten raw materials, the gas storage tank 305 is used to store dry compressed air, the air guide pipe 308 is used to send compressed air into the crucible jar 301, thereby increasing the pressure inside the crucible jar 301, and the raw materials are sent out through the feed pipe 309 to achieve casting.

[0033] The bottom-pouring casting device 5 includes a mold groove 503 fixedly installed on the top of the frame 1. A cover plate 501 is provided on the top of the mold groove 503. A funnel-shaped vent 502 is provided inside the cover plate 501. A sealing plate 504 is provided on the rear side of the mold groove 503. The top of the feed pipe 309 is connected to the mold groove 503.

[0034] The effects achieved by the above structure are as follows: the mold groove 503 is used to hold the sand core, and the workpiece is cast and molded in cooperation with the sand core; the cover plate 501 is used to seal the top of the mold groove 503; and the funnel-shaped vent 502 is used to expel the air inside the mold groove 503, preventing air from accumulating inside the mold groove 503 and affecting the casting of the steering knuckle.

[0035] The mold groove 503 has two mounting grooves inside, and a second electric push rod 505 is fixedly installed inside the mounting groove. The output end of the second electric push rod 505 is fixedly connected to the front side of the sealing plate 504.

[0036] The effect achieved by the above structure is as follows: the installation groove is used to install the second electric push rod 505, and the second electric push rod 505 is used to push the sealing plate 504 to move backward, thereby realizing the discharge of the molding sand remaining inside the mold groove 503 after pouring and the discharge guide groove 6.

[0037] Among them, an arched frame 2 is fixedly installed on the top of the frame 1, and a first electric push rod 4 is fixedly installed on the top of the arched frame 2. The output end of the first electric push rod 4 passes through the arched frame 2 and is fixedly connected to the top of the cover plate 501. The cover plate 501 is raised and lowered by the arched frame 2 and the first electric push rod 4, which facilitates the placement of the sand core inside the mold groove 503 and the removal of the cast steering knuckle.

[0038] An air compressor 304 is fixedly installed on the top of the air storage tank 305. The output end of the air compressor 304 is connected to the air storage tank 305. The air compressor 304 is used to compress air and send it into the interior of the air storage tank 305 for storage.

[0039] The right side of the gas storage tank 305 is connected to a first solenoid valve 307, and the right side of the first solenoid valve 307 is connected to the left side of the gas guide pipe 308. The first solenoid valve 307 is used to control the amount of air entering the crucible jar 301 from the gas storage tank 305, thereby forcing the raw materials inside the crucible jar 301 out under the action of the air pressure difference.

[0040] The crucible jar 301 is connected to a feed pipe 302 on the right side, and a sealing cap 303 is threadedly connected to the right side of the feed pipe 302. The feed pipe 302 is used to add raw materials into the crucible jar 301, and the sealing cap 303 is used to seal the feed pipe 302 to prevent air from leaking out of the crucible jar 301.

[0041] The crucible jar 301 consists of two parts and is fixedly connected by bolts. By setting the crucible jar 301 into two parts and connecting them by bolts, it is convenient to disassemble the crucible jar 301 to clean the raw materials remaining inside the crucible jar 301.

[0042] In use, the sealing cap 303 is unscrewed from the top of the feed pipe 302, and the molten raw material is injected into the crucible jar 301 through the feed pipe 302. The sealing cap 303 is then screwed onto the top of the feed pipe 302. After the raw material is added, the air compressor 304 pressurizes the external air and sends it to the storage tank 305 for storage. The cover plate 501 is lifted by the first electric push rod 4. When the sand core needs to be added as required by production, the sand core is placed inside the mold groove 503, and then the cover plate 501 is lowered by the first electric push rod 4 and sealed to the top of the mold groove 503. The opening of the first solenoid valve 307 allows the air inside the storage tank 305 to enter the crucible jar 301 through the air guide pipe 308, thereby increasing the pressure inside the crucible jar 301 and allowing the raw material inside to be added. The material enters the mold groove 503 through the feed pipe 309 and forms a steering knuckle under the action of the sand core. The air inside the mold groove 503 is discharged through the funnel-shaped exhaust port 502 inside the cover plate 501. After the bottom pouring is completed, the first solenoid valve 307 is closed and the second solenoid valve 310 is opened to allow the gas inside the crucible jar 301 to be discharged, thereby reducing the pressure inside the crucible jar 301. The raw material inside the feed pipe 309 flows back into the crucible jar 301. The cover plate 501 is lifted by the first electric push rod 4 to remove the steering knuckle after bottom pouring. The sealing plate 504 is pushed backward by the second electric push rod 505 to contact the external sealing plug and seal the top of the feed pipe 309. The molding sand left inside the mold groove 503 is swept out and discharged through the sand discharge guide groove 6.

[0043] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A steering knuckle forming mold based on low-pressure casting and bottom-pouring technology, characterized in that, Includes a frame (1), a low-pressure casting feeding device (3) is provided at the bottom of the frame (1), a bottom-pouring casting device (5) is provided at the top of the frame (1), and a sand discharge guide groove (6) is provided on the rear side of the top of the frame (1). The low-pressure casting feeding device (3) includes a crucible jar (301) located at the bottom of the frame (1). A mounting base plate (306) is provided on the left side of the frame (1). A gas storage tank (305) is fixedly installed on the top of the mounting base plate (306). A gas guide pipe (308) is connected to the right side of the crucible jar (301). A feeding pipe (309) is inserted inside the crucible jar (301). The top of the feeding pipe (309) passes through the frame (1) and extends to the top of the frame (1). A second solenoid valve (310) is connected to the top of the crucible jar (301) and to the right side of the feeding pipe (309). The bottom-pouring casting device (5) includes a mold groove (503) fixedly installed on the top of the frame (1). A cover plate (501) is provided on the top of the mold groove (503). A funnel-shaped vent (502) is provided inside the cover plate (501). A sealing plate (504) is provided on the rear side of the mold groove (503). The top of the feed pipe (309) is connected to the mold groove (503).

2. The steering knuckle forming mold based on low-pressure casting and bottom-pouring technology according to claim 1, characterized in that, The mold groove (503) has two mounting grooves inside, and a second electric push rod (505) is fixedly installed inside the mounting groove. The output end of the second electric push rod (505) is fixedly connected to the front side of the sealing plate (504).

3. The steering knuckle forming mold based on low-pressure casting and bottom-pouring technology according to claim 1, characterized in that, An arched frame (2) is fixedly installed on the top of the frame (1), and a first electric push rod (4) is fixedly installed on the top of the arched frame (2). The output end of the first electric push rod (4) passes through the arched frame (2) and is fixedly connected to the top of the cover plate (501).

4. The steering knuckle forming mold based on low-pressure casting and bottom-pouring technology according to claim 1, characterized in that, An air compressor (304) is fixedly installed on the top of the air storage tank (305), and the output end of the air compressor (304) is connected to the air storage tank (305).

5. The steering knuckle forming mold based on low-pressure casting and bottom-pouring technology according to claim 1, characterized in that, The right side of the gas storage tank (305) is connected to a first solenoid valve (307), and the right side of the first solenoid valve (307) is connected to the left side of the gas guide pipe (308).

6. The steering knuckle forming mold based on low-pressure casting and bottom-pouring technology according to any one of claims 1-5, characterized in that, The right side of the crucible (301) is connected to a feed pipe (302), and the right side of the feed pipe (302) is threaded with a sealing cap (303).

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