A molding device for improving porosity of a casting

Abstract

The utility model discloses a kind of forming devices for improving casting air hole, including machine body;Forming die, fixed on machine body;Compression chamber, open in forming die;Hydraulic actuator one, install above compression chamber;Injection piston, install on the telescopic end of hydraulic actuator one;Hydraulic actuator two, install in machine body;Lower piston, bottom and the telescopic end of hydraulic actuator two are connected;Movable die, connect with forming die by opening and closing mechanism;Connecting rod, fixed in movable die both sides;Pushing plate, install in a group of connecting rod front end;Adsorption magnetic block one, install on pushing plate;Guide plate, for a group, fixed in forming die rear end;Round bar, both ends movably insert in guide plate;Adsorption magnetic block two, install on round bar;Pushing rod, front end movably insert in forming die.The utility model has the beneficial effects that double-piston die-casting feeding, casting is not easy to produce air hole defect, casting is pushed out by pushing rod, lower piston can push out excess material, facilitate continuous die-casting.

Description

Technical Field

[0001] This utility model relates to the field of casting technology, specifically to a forming device for improving the porosity of castings. Background Technology

[0002] The working principle of a die-casting machine is based on the control of pressure and speed. Under pressure, the die-casting machine injects molten metal into a mold to cool and solidify. After the mold is opened, a solid metal casting is obtained. Initially used for die-casting type, die-casting technology has developed extremely rapidly with advancements in science and technology and industrial production, especially with the development of industries such as automobiles, motorcycles, and household appliances.

[0003] Die casting is a process in which molten metal is filled into a mold under high pressure and high speed, and then solidified under high pressure to form a casting. Traditional die casting equipment generally uses a single piston, which has poor airtightness, making it prone to porosity defects. In addition, the waste generated in the cavity channel after die casting is not easy to be discharged, affecting subsequent use. Utility Model Content

[0004] To address the above-mentioned deficiencies, this utility model provides a forming device for improving the porosity of castings, thereby solving the problem of die casting.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A forming apparatus for improving the porosity of castings, comprising: Organism; The molding die is fixed to the machine body; The pressure chamber is located inside the forming mold, with its top and bottom penetrating through the forming mold respectively; Hydraulic actuator one is mounted above the pressure chamber via an inverted L-shaped mounting plate; The injection piston is mounted on one telescopic end of the hydraulic actuator. The second hydraulic actuator is installed inside the machine body, and its telescopic end extends through the pressure chamber. The lower piston has a movable seal installed in the pressure chamber, and its bottom is connected to the two telescopic ends of the hydraulic actuator; The moving mold is movably mounted on the machine body and connected to the fixed mold via an opening and closing mechanism; The connecting rods, as a set, are fixed on both sides of the moving mold. The push plate is installed at the front end of a set of connecting rods; One magnetic adsorption block is mounted on the push plate; The guide plates, in a set, are fixed to the rear end of the shaping mold; A round rod, with both ends movably inserted into the guide plate; The second magnetic block is mounted on the round rod and corresponds to the position of the first magnetic block. The push rod is a set, with the front end movable and inserted into the shaping mold, and the rear end connected to the round rod.

[0006] Furthermore, the opening and closing mechanism includes a hydraulic actuator three fixed on the right side of the machine body. The telescopic end of the hydraulic actuator three is connected to the rear end of the moving mold. The hydraulic actuator three adopts a hydraulic cylinder, which can pull the moving mold to realize the opening and closing with the fixed mold.

[0007] Furthermore, a set of fixed sleeves is installed on both sides of the fixed mold, and a set of sliding sleeves is installed on both sides of the moving mold. Guide rods are movably inserted into the fixed sleeves and sliding sleeves respectively. During the opening and closing of the moving mold, the guide rods can play a guiding role.

[0008] Furthermore, a set of guide plates are each provided with guide holes corresponding to the round rod, which are used to guide and limit the round rod.

[0009] Furthermore, a cavity communicating with the pressure chamber is provided between the fixed mold and the moving mold to facilitate die casting of the casting.

[0010] Furthermore, the front end of a set of push rods is located inside the mold cavity, which does not affect the normal die casting process of the casting.

[0011] This utility model provides a forming device for improving the porosity of castings, which has the following beneficial effects: by adding molten metal into the pressure chamber, the injection piston descends and cooperates with the lower piston to inject the molten metal into the mold cavity, and it quickly solidifies into a casting under pressure. The use of double pistons results in higher airtightness, and the casting is less likely to have porosity defects. During demolding, the fixed mold and the moving mold separate, the push rod pushes the casting out, and the lower piston can push out the excess material, which facilitates continuous die casting. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a forming device for improving the porosity of castings according to the present invention; Figure 2 This is a schematic diagram of the fixed mold and the moving mold described in this utility model; Figure 3 This is an installation diagram of the hydraulic actuator described in this utility model; Figure 4 This is a schematic diagram of the guide hole described in this utility model; Figure 5 This is a top view of the push plate described in this utility model; Figure 6 This is a schematic diagram of the push rod ejecting as described in this utility model; In the diagram: 1. Machine body; 2. Fixed mold; 3. Pressure chamber; 4. Hydraulic actuator one; 5. Inverted L-shaped mounting plate; 6. Injection piston; 7. Hydraulic actuator two; 8. Lower piston; 9. Moving mold; 10. Connecting rod; 11. Push plate; 12. Adsorption magnet one; 13. Guide plate; 14. Round rod; 15. Adsorption magnet two; 16. Push rod; 17. Hydraulic actuator three; 18. Fixed sleeve; 19. Sliding sleeve; 20. Guide rod; 21. Guide hole; 22. Cavity. Detailed Implementation

[0013] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0014] Please see Figures 1 to 6 As shown, this application provides a forming device for improving the porosity of castings, including a body 1; a forming mold 2 fixed on the body 1; a pressure chamber 3 opened inside the forming mold 2, with its top and bottom penetrating through the forming mold 2 respectively; a hydraulic actuator 4 mounted above the pressure chamber 3 via an inverted L-shaped mounting plate 5; an injection piston 6 mounted on the telescopic end of the hydraulic actuator 4; a second hydraulic actuator 7 mounted inside the body 1, with its telescopic end movably penetrating through the pressure chamber 3; a lower piston 8 movably and sealingly mounted inside the pressure chamber 3, with its bottom connected to the telescopic end of the second hydraulic actuator 7; and a moving type. Mold 9 is movably mounted on the machine body 1 and connected to the fixed mold 2 via an opening and closing mechanism; connecting rod 10, a set, is fixed on both sides of the moving mold 9; push plate 11 is mounted on the front end of the set of connecting rods 10; magnetic adsorption block 12 is mounted on the push plate 11; guide plate 13, a set, is fixed to the rear end of the fixed mold 2; round rod 14, both ends of which are movably inserted into the guide plate 13; magnetic adsorption block 2 15 is mounted on the round rod 14 and corresponds to the position of magnetic adsorption block 12; push rod 16, a set, has its front end movably inserted into the fixed mold 2 and its rear end connected to the round rod 14.

[0015] In this embodiment, hydraulic actuator 4 and hydraulic actuator 7 are respectively hydraulic cylinders, and the initial positions of the injection piston 6 and the lower piston 8 are as follows: Figure 1As shown, a feeding port is opened at the upper end of the pressure chamber 3. During die casting, a certain amount of molten metal is first added into the pressure chamber 3. The hydraulic actuator 4 first drives the injection piston 6 to descend. After contacting the molten metal, the hydraulic actuator 7 drives the lower piston 8 to descend to the bottom. Together with the injection piston 6, the molten metal is injected into the mold cavity. Under pressure, it quickly solidifies into a casting. The use of a double piston results in higher airtightness, and the casting is less prone to porosity defects. During demolding, the opening and closing mechanism drives the fixed mold 2 and the moving mold 9 to separate. During the movement of the moving mold 9 towards the rear end... Simultaneously, a set of connecting rods 10 drives the push plate 11 to move. When the first magnetic block 12 on the push plate 11 and the second magnetic block 15 on the round rod 14 are attracted, the round rod 14 pushes the push rod 16 to push out the casting. Then, the extension end of the hydraulic actuator 7 extends, which drives the lower piston 8 to push out the excess material in the pressure chamber 3, which is convenient for continuous die casting. When the moving mold 9 is reset, the push plate 11 can pull the round rod 14 and a set of push rods 16 to reset synchronously. A set of guide plates 13 can guide and limit the round rod 14.

[0016] In some embodiments, the opening and closing mechanism includes a hydraulic actuator 317 fixed to the right side of the body 1, the telescopic end of the hydraulic actuator 317 being connected to the rear end of the moving mold 9; such as Figure 1 As shown, the hydraulic actuator 317 uses a hydraulic cylinder, which can pull the moving mold 9 to realize the opening and closing with the fixed mold 2.

[0017] In some embodiments, a set of fixed sleeves 18 are installed on both sides of the fixed mold 2, and a set of sliding sleeves 19 are installed on both sides of the movable mold 9, with guide rods 20 movably inserted into the fixed sleeves 18 and sliding sleeves 19 respectively; for example Figure 2 As shown, during the opening and closing process of the moving mold 9, a set of guide rods 20 can play a guiding role.

[0018] In some embodiments, a set of guide plates 13 are respectively provided with guide holes 21 corresponding to the round rod 14, which are used to guide and limit the round rod 14.

[0019] In some embodiments, a cavity 22 communicating with the pressure chamber 3 is provided between the fixed mold 2 and the moving mold 9, such as... Figure 1 As shown, this facilitates die casting of the casting.

[0020] In some embodiments, the front ends of a set of push rods 16 are located inside the cavity 22, which does not affect the normal die casting of the casting.

[0021] The above technical solution only embodies the preferred technical solution of this utility model. Any changes that may be made by those skilled in the art to certain parts of it embody the principle of this utility model and fall within the protection scope of this utility model.

Claims

1. A forming apparatus for improving porosity in castings, characterized in that: include Body (1); The molding die (2) is fixed on the body (1); The pressure chamber (3) is located inside the molding mold (2), and its top and bottom penetrate the molding mold (2) respectively. The hydraulic actuator (4) is mounted above the pressure chamber (3) via an inverted L-shaped mounting plate (5); The injection piston (6) is installed on the telescopic end of the hydraulic actuator (4); The second hydraulic actuator (7) is installed inside the machine body (1), and its telescopic end moves through the pressure chamber (3). The lower piston (8) has a movable seal installed in the pressure chamber (3), and its bottom is connected to the telescopic end of the hydraulic actuator (7); The moving mold (9) is movably mounted on the body (1) and connected to the fixed mold (2) through an opening and closing mechanism; The connecting rods (10) are a set and are fixed on both sides of the moving mold (9); A push plate (11) is installed at the front end of a set of connecting rods (10); Adsorption magnetic block 1 (12) is installed on push plate (11); The guide plate (13) is a set and is fixed to the rear end of the shaping mold (2); The round rod (14) is movably inserted into the guide plate (13) at both ends; Adsorption magnetic block two (15) is installed on the round rod (14) and corresponds to the position of adsorption magnetic block one (12); The push rod (16) is a set, with its front end movably inserted into the shaping mold (2) and its rear end connected to the round rod (14).

2. The forming apparatus for improving porosity in castings according to claim 1, characterized in that, The opening and closing mechanism includes a hydraulic actuator three (17) fixed on the right side of the body (1), and the telescopic end of the hydraulic actuator three (17) is connected to the rear end of the moving mold (9).

3. The forming apparatus for improving the porosity of castings according to claim 2, characterized in that, A set of fixed sleeves (18) is installed on both sides of the fixed mold (2), and a set of sliding sleeves (19) is installed on both sides of the moving mold (9). Guide rods (20) are movably inserted into the fixed sleeves (18) and sliding sleeves (19).

4. The forming apparatus for improving the porosity of castings according to claim 1, characterized in that, A set of guide plates (13) are respectively provided with guide holes (21) corresponding to the round rod (14).

5. The forming apparatus for improving the porosity of castings according to claim 1, characterized in that, A cavity (22) communicating with the pressure chamber (3) is provided between the fixed mold (2) and the moving mold (9).

6. The forming apparatus for improving porosity in castings according to claim 5, characterized in that, A set of push rods (16) have their front ends located inside the cavity (22).

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