Die-casting die for lotus lamp shell

Abstract

The utility model relates to a die-casting die for a lotus lamp shell, which comprises an upper die, a lower die and a die foot, the upper die and the lower die are stacked up and down, the die foot is arranged on the lower end face of the lower die, an ejector pin panel capable of moving up and down is arranged in the die foot, and the ejector pin panel is arranged on the lower end face of the lower die. A combined upper mold core and a combined lower mold core are arranged between the upper mold and the lower mold, the upper part of the combined lower mold core is provided with an arc-shaped forming convex surface of which the middle part protrudes upwards, and the rear side of the middle part of the combined lower mold core is provided with a sprue base; an injection channel extending into the middle rear side of the arc-shaped forming convex surface is arranged on the sprue base, an arc-shaped middle runner is arranged at the front end of the injection channel, side runners are arranged at the two ends of the arc-shaped middle runner, and each side runner is of an arc-strip-shaped structure with one end bent and extending downwards. And a plurality of probing injection ports extending into the rear part of the arc-shaped forming convex surface are uniformly formed in the front sides of the side runners and the arc-shaped middle runner.

Description

Technical Field

[0001] This utility model relates to the field of lamp housing manufacturing technology, and in particular to a die-casting mold for lotus lamp housings. Background Technology

[0002] The outer shell of the lotus lantern is generally petal-shaped. During production, die-casting molds are usually chosen. Because the petals are curved and very thin, ordinary molds are prone to causing partial defects in the product due to the very slow injection speed of molten aluminum. To solve the above problems, the molds need to be improved. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a die-casting mold for the outer shell of a lotus lantern, which has the characteristics of improving the injection speed of molten aluminum, avoiding local defects in the product, and improving product quality.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a die-casting mold for lotus lantern shell is provided, including an upper mold, a lower mold and a mold foot. The upper mold and the lower mold are stacked on top of each other. A mold foot is installed on the lower end face of the lower mold. An ejector plate that moves up and down is installed inside the mold foot. A combined upper mold core and a combined lower mold core are installed between the upper mold and the lower mold. An arc-shaped molding convex surface with the center protruding upward is provided on the upper part of the combined lower mold core. A sprue seat is provided on the rear side of the center of the combined lower mold core. An injection channel extending into the rear side of the arc-shaped molding convex surface is provided on the sprue seat. An arc-shaped central flow channel is provided at the front end of the injection channel. Side flow channels are provided at both ends of the arc-shaped central flow channel. The side flow channel adopts an arc-shaped structure that bends downward at one end. A number of probe-type injection ports extending into the rear part of the arc-shaped molding convex surface are evenly provided on the front side of the side flow channel and the arc-shaped central flow channel.

[0005] In this technical solution, a combined upper mold core and a combined lower mold core are used to ensure the formation of the petal-shaped arc mold cavity. A sprue seat is provided to facilitate the injection of molten aluminum into the mold cavity. An arc-shaped forming convex surface is provided to facilitate the formation of the petals. An arc-shaped central flow channel is provided to guide the molten aluminum inflow. Two side flow channels are provided to guide the molten aluminum to both ends of the mold cavity structure. The side flow channels and the arc-shaped central flow channel facilitate the synchronous injection of molten aluminum into the mold cavity structure, greatly improving the injection speed of molten aluminum.

[0006] As a supplement to this technical solution, the combined lower mold core includes a middle lower mold core, a left lower mold core, and a right lower mold core. The left lower mold core and the right lower mold core are respectively installed on the left and right sides of the middle lower mold core. By setting the middle lower mold core, the left lower mold core, and the right lower mold core in this technical solution, it is convenient for workers to perform separate processing, which greatly reduces the processing difficulty of the mold.

[0007] As a supplement to this technical solution, the upper front end of the combined lower mold core is provided with several slag-filled structures that are in contact with the arc-shaped convex surfaces. The slag-filled structures are provided to facilitate the centralized discharge of internal gas and ensure product quality.

[0008] As a supplement to this technical solution, the arc-shaped convex surface is provided with several reinforcing rib grooves arranged in a grid, which facilitates the forming of the reinforcing ribs of the product.

[0009] As a supplement to this technical solution, the rear part of the combined lower mold core is provided with a limiting guide hole, and the ejector plate is equipped with a limiting guide post for inserting into the limiting guide hole.

[0010] As a supplement to this technical solution, the sprue seat is equipped with a sprue sleeve that passes through the combined upper mold core and the upper mold.

[0011] Beneficial effects: This utility model relates to a die-casting mold for the outer shell of a lotus lantern. It uses a combined upper mold core and a combined lower mold core to ensure the formation of a petal-shaped arc-shaped mold cavity. A sprue seat facilitates the injection of molten aluminum into the mold cavity. An arc-shaped forming convex surface facilitates the formation of the petals. An arc-shaped central flow channel guides the molten aluminum inflow. Two side flow channels guide the molten aluminum to both ends of the mold cavity structure. The side flow channels and the arc-shaped central flow channel facilitate the synchronous injection of molten aluminum into the mold cavity structure, greatly improving the injection speed of the molten aluminum. It features increased molten aluminum injection speed, avoidance of partial product defects, and improved product quality. Attached Figure Description

[0012] Figure 1 This is a structural view of the present invention;

[0013] Figure 2 This is a structural view of the combined upper mold core and the combined lower mold core described in this utility model;

[0014] Figure 3 This is a structural view of the arc-shaped convex surface described in this utility model.

[0015] Illustration: 1. Upper mold, 2. Lower mold, 3. Mold foot, 4. Ejector plate, 5. Combined upper mold core, 6. Combined lower mold core, 7. Sprue bushing, 8. Left lower mold core, 9. Middle lower mold core, 10. Right lower mold core, 11. Sprue seat, 12. Injection channel, 13. Limiting guide hole, 14. Arc-shaped middle runner, 15. Side runner, 16. Arc-shaped convex surface, 17. Reinforcing rib groove, 18. Slag bag structure, 19. Extended protrusion. Detailed Implementation

[0016] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0017] The present invention relates to a die-casting mold for the outer shell of a lotus lantern, such as... Figure 1 As shown in Figure 3, the system includes an upper mold 1, a lower mold 2, and mold feet 3. The upper mold 1 and lower mold 2 are stacked vertically. Mold feet 3 are mounted on the lower end face of the lower mold 2. An ejector plate 4 that moves vertically is installed inside the mold feet 3. A combined upper mold core 5 and a combined lower mold core 6 are installed between the upper mold 1 and the lower mold 2. The upper part of the combined lower mold core 6 is provided with an arc-shaped forming convex surface 16 that protrudes upward from the center. A gate is provided on the rear side of the center of the combined lower mold core 6. The gate seat 11 is provided with an injection channel 12 extending into the rear side of the arc-shaped convex surface 16. The front end of the injection channel 12 is provided with an arc-shaped central flow channel 14. Side flow channels 15 are provided at both ends of the arc-shaped central flow channel 14. The side flow channel 15 adopts an arc-shaped structure that bends downward at one end. Several probe-type injection ports extending into the rear of the arc-shaped convex surface 16 are evenly provided at the front side of the side flow channel 15 and the arc-shaped central flow channel 14.

[0018] In this technical solution, a combined upper mold core 5 and a combined lower mold core 6 are used to ensure that the petal-shaped arc mold cavity is formed. A sprue seat 11 is used to facilitate the injection of molten aluminum into the mold cavity. An arc-shaped forming convex surface 16 is used to facilitate the forming of petals. An arc-shaped central flow channel 14 is used to guide the molten aluminum inflow. Two side flow channels 15 are used to guide the molten aluminum to both ends of the mold cavity structure. The side flow channels 15 and the arc-shaped central flow channel 14 facilitate the synchronous injection of molten aluminum into the mold cavity structure, greatly improving the injection speed of molten aluminum.

[0019] As a supplement to this technical solution, the combined lower mold core 6 includes a middle lower mold core 9, a left lower mold core 8, and a right lower mold core 10. The left lower mold core 8 and the right lower mold core 10 are respectively installed on the left and right sides of the middle lower mold core 9. By setting the middle lower mold core 9, the left lower mold core 8, and the right lower mold core 10 in this technical solution, it is convenient for workers to perform separate processing, which greatly reduces the processing difficulty of the mold.

[0020] As a supplement to this technical solution, the upper front end of the combined lower mold core 6 is provided with several slag bag structures 18 that are connected to the arc-shaped convex surface 16. The slag bag structures 18 are provided to facilitate the centralized discharge of internal gas and ensure product quality.

[0021] As a supplement to this technical solution, the arc-shaped convex surface 16 is provided with a plurality of reinforcing rib grooves 17 arranged in a grid, and the reinforcing rib grooves 17 facilitate the forming of the reinforcing ribs of the product.

[0022] As a supplement to this technical solution, the rear of the combined lower mold core 6 is provided with a limiting guide hole 13, and the ejector plate 4 is equipped with a limiting guide post for inserting into the limiting guide hole 13. The limiting guide post and the limiting guide hole 13 are used to facilitate the installation of the combined lower mold core 6.

[0023] As a supplement to this technical solution, a sprue sleeve 7 is installed on the sprue seat 11, which passes through the combined upper mold core 5 and the upper mold 1.

[0024] As a supplement to this technical solution, the upper mold 1 is provided with outwardly protruding extension protrusions 19 on both the front and rear sides of its upper end.

[0025] Example

[0026] During production, the upper mold 1 and lower mold 2 are first closed. After that, molten aluminum is injected into the mold cavity through the sprue seat 11 and sprue sleeve 7. The molten aluminum enters the arc-shaped central runner 14 along the injection channel 12. The molten aluminum then enters the two side runners 15 along the arc-shaped central runner 14. Because the side runners 15 have an arc-shaped structure, the molten aluminum can spread quickly. At the same time, the molten aluminum is injected into the arc-shaped molding convex surface 16 through the arc-shaped central runner 14 and the two side runners 15, so that the molten aluminum can quickly fill the mold cavity, ensuring product quality, improving product molding speed, and avoiding the problem of partial defects in the product.

Claims

1. A die-casting mold for a lotus lantern shell, comprising an upper mold (1), a lower mold (2), and a mold foot (3), wherein the upper mold (1) and the lower mold (2) are stacked vertically, and a mold foot (3) is mounted on the lower end face of the lower mold (2), and a vertically movable ejector plate (4) is mounted inside the mold foot (3), characterized in that: A combined upper mold core (5) and a combined lower mold core (6) are installed between the upper mold (1) and the lower mold (2). The upper part of the combined lower mold core (6) is provided with an arc-shaped molding convex surface (16) that protrudes upward in the middle. A gate seat (11) is provided on the rear side of the middle part of the combined lower mold core (6). An injection channel (12) extending into the rear side of the arc-shaped molding convex surface (16) is provided on the gate seat (11). An arc-shaped central flow channel (14) is provided at the front end of the injection channel (12). Side flow channels (15) are provided at both ends of the arc-shaped central flow channel (14). The side flow channel (15) adopts an arc-shaped structure that bends downward at one end. Several probing injection ports extending into the rear part of the arc-shaped molding convex surface (16) are evenly provided on the front side of the side flow channel (15) and the arc-shaped central flow channel (14).

2. The die-casting mold for the outer shell of a lotus lantern according to claim 1, characterized in that: The combined lower mold core (6) includes a middle lower mold core (9), a left lower mold core (8) and a right lower mold core (10), with the left lower mold core (8) and the right lower mold core (10) respectively installed on the left and right sides of the middle lower mold core (9).

3. The die-casting mold for the outer shell of a lotus lantern according to claim 1, characterized in that: The upper front of the combined lower mold core (6) is provided with several slag bag structures (18) that are connected to the arc-shaped convex surface (16).

4. A die-casting mold for a lotus lantern shell according to claim 1, characterized in that: The arc-shaped convex surface (16) is provided with several reinforcing rib grooves (17) arranged in a grid.

5. A die-casting mold for a lotus lantern shell according to claim 1, characterized in that: The rear of the combined lower mold core (6) is provided with a limiting guide hole (13), and the ejector plate (4) is equipped with a limiting guide post for inserting into the limiting guide hole (13).

6. A die-casting mold for a lotus lantern shell according to claim 1, characterized in that: The sprue seat (11) is equipped with a sprue sleeve (7) that passes through the combined upper mold core (5) and the upper mold (1).

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