Pouring gate water entry speed reduction structure of aluminum alloy die-casting die

Abstract

The utility model provides an aluminum alloy die-casting die pouring gate water entry speed reduction structure which comprises a die body, a movable die, a movable die seat plate, a pouring gate system and a rejection system are arranged on the die body, and a tower type speed reduction mechanism is arranged between the pouring gate system and the die body. The tower-type speed reducing mechanism comprises two central cross gates and four side gates, buffer tables are arranged at the two central cross gates, a fixed mold is arranged below the movable mold, a forming cavity is formed in the fixed mold, a plurality of through holes are formed in the movable mold and the fixed mold, a plurality of movable mold guide columns are arranged between the fixed mold and the movable mold, and the movable mold guide columns are connected with the movable mold. And the movable die guide column penetrates through the through hole, so that the problems that gas and heat cannot be discharged in time, the solidification time of molten aluminum is not uniform, the pressure speed is too high, and the product compactness is poor due to the fact that water impact of a pouring gate of a current die-casting die is too fast are solved.

Description

Technical Field

[0001] The utility model relates to the field of molds, in particular to a gate water inlet deceleration structure for an aluminum alloy die-casting mold. Background Art

[0002] A mold is a tool used to form articles, and this tool is composed of various parts. It mainly realizes the processing of the external shape of articles by changing the physical state of the formed material. There are many types of molds, which can be divided into molds for processing metals, molds for processing non-metals and powder metallurgy according to the processing object and processing technology. According to the different materials to be formed, the molds can be divided into hardware molds, plastic molds, and their special molds.

[0003] Currently, the defective rate of die-casting molds is 50% (manifested as shrinkage porosity on the first-class surface), mainly because the gate water inlet impact is too fast, resulting in the inability to discharge gas and heat in time, the non-uniform solidification time of the aluminum liquid, the too fast pressure speed, and the poor density of the product.

[0004] Therefore, it is necessary to provide a new gate water inlet deceleration structure for an aluminum alloy die-casting mold to solve the above technical problems. Summary of the Utility Model

[0005] To solve the above technical problems, the utility model provides a gate water inlet deceleration structure for an aluminum alloy die-casting mold, which solves the problems of too fast gate water inlet impact in the current die-casting mold, resulting in the inability to discharge gas and heat in time, the non-uniform solidification time of the aluminum liquid, the too fast pressure speed, and the poor density of the product.

[0006] The gate water inlet deceleration structure for the aluminum alloy die-casting mold provided by the utility model includes a mold body, on which a moving mold, a moving mold base plate, a runner system, and a rejection system are arranged. A tower-shaped deceleration mechanism is arranged between the runner system and the mold body, and the tower-shaped deceleration mechanism includes two central cross runners and four side runners.

[0007] In a preferred embodiment, buffer platforms are arranged at the two central cross runners.

[0008] In a preferred embodiment, the buffer platforms are rounded at the sharp corners, and the height and length of the buffer platforms are both 3 mm.

[0009] In a preferred embodiment, a push rod fixing plate is arranged below the moving mold base plate, and a number of push rods are installed at intervals on the push rod fixing plate.

[0010] In a preferred embodiment, a stationary mold is arranged below the moving mold, a forming cavity is arranged at the stationary mold, a number of through holes are opened on both the moving mold and the stationary mold, and a number of moving mold guide columns are arranged between the stationary mold and the moving mold, and the moving mold guide columns penetrate through the through holes.

[0011] In a preferred embodiment, a cooling water channel is provided on one side of the fixed mold.

[0012] Advantages of the present utility model: This die-casting mold uses a tower-type deceleration method, which can more effectively relieve the impact of molten aluminum during filling, ensure smooth entry of the molten aluminum during filling, and maintain the speed within a certain range without reduction, reduce the impact force, enable the molten aluminum to enter the forming cavity slowly and smoothly, unify the solidification time of the aluminum liquid, make the pressure and speed smooth, effectively ensure the compactness of the product, and at the same time effectively extend the service life of the die-casting mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a three-dimensional view of the main structure of the gate water entry deceleration structure of the aluminum alloy die-casting mold provided by the present utility model;

[0014] Figure 2 is a schematic structural view of the runner system of the gate water entry deceleration structure of the aluminum alloy die-casting mold provided by the present utility model;

[0015] Figure 3 is an exploded view of the main structure of the gate water entry deceleration structure of the aluminum alloy die-casting mold provided by the present utility model.

[0016] Reference numerals in the figures: 1, mold body; 2, moving mold; 3, moving mold base plate; 4, runner system; 5, rejection system; 6, central runner; 7, side runner; 8, buffer table; 9, ejector plate; 10, ejector pin; 11, fixed mold; 12, forming cavity; 13, moving mold guide pillar; 14, through hole; 15, cooling water channel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0018] Please refer to Figure 1 , Figure 2 and Figure 3 , where Figure 1 is a three-dimensional view of the overall structure of the gate water entry deceleration structure of the aluminum alloy die-casting mold provided by the present utility model; Figure 2 is a schematic structural view of the runner system of the gate water entry deceleration structure of the aluminum alloy die-casting mold provided by the present utility model; Figure 3 is an exploded view of the overall structure of the gate water entry deceleration structure of the aluminum alloy die-casting mold provided by the present utility model.

[0019] In the specific implementation process, as Figures 1-3As shown in the figure, it includes a mold body 1. On the mold body 1, a moving mold 2, a moving mold base plate 3, a runner system 4, and a rejection system 5 are provided. A tower-type deceleration mechanism is arranged between the runner system 4 and the mold body 1. The tower-type deceleration mechanism includes two central cross-runners 6 and four side runners 7. Buffer platforms 8 are arranged at the two central cross-runners 6. The buffer platforms 8 are rounded at the sharp corners. The height and length of the buffer platforms 8 are both 3 mm, which plays a further buffering role. The general buffering method for commonly used die-casting molds is platform deceleration, while this die-casting mold uses the tower-type deceleration method. By setting two central cross-runners 6, four side runners 7, and buffer platforms 8, this method can more effectively relieve the impact of molten aluminum during filling, ensure smooth entry of the molten aluminum during filling and maintain the speed within a certain range, reduce the impact force, and enable the molten aluminum to slowly and smoothly enter the forming cavity 12 ， The solidification time of the aluminum liquid can be unified, the pressure and speed are gentle, the density of the product can be effectively guaranteed, and at the same time, the service life of the die-casting mold can be effectively extended.

[0020] Below the moving mold base plate 3, a push rod fixing plate 9 is provided. A number of push rods 10 are installed at intervals on the push rod fixing plate 9. Below the moving mold 2, a stationary mold 11 is provided. A forming cavity 12 is provided at the stationary mold 11. A number of through holes 14 are opened on both the moving mold 2 and the stationary mold 11. A number of moving mold guide posts 13 are arranged between the stationary mold 11 and the moving mold 2. The moving mold guide posts 13 penetrate through the through holes 14. A cooling water channel 15 is arranged on one side of the stationary mold 11. After the molten aluminum slowly enters the straight runner, it enters the forming cavity 12 in the stationary mold 11. Subsequently, the upper moving mold 2 presses down through the moving mold guide posts 13, and the cooling water enters the forming cavity 12 through the cooling water channel 15 to form the product. Then the moving mold 2 rises, and a number of push rods 10 on the push rod fixing plate 9 above the moving mold 2 press down to push the formed part out of the forming cavity 12 of the moving mold 2.

[0021] The working principle of the present utility model: The general buffering method for commonly used die-casting molds is platform deceleration, while this die-casting mold uses the tower-type deceleration method. This method can more effectively relieve the impact of molten aluminum during filling, ensure smooth entry of the molten aluminum during filling and maintain the speed within a certain range, reduce the impact force, and enable the molten aluminum to slowly and smoothly enter the forming cavity 12 ， The solidification time of the aluminum liquid can be unified, the pressure and speed are gentle, the density of the product can be effectively guaranteed, and at the same time, the service life of the die-casting mold can be effectively extended;

[0022] After the molten aluminum slowly enters the straight runner, it enters the forming cavity 12 in the stationary mold 11. Subsequently, the upper moving mold 2 presses down through the moving mold guide posts 13, and the cooling water enters the forming cavity 12 through the cooling water channel 15 to form the product. Then the moving mold 2 rises, and a number of push rods 10 on the push rod fixing plate 9 above the moving mold 2 press down to push the formed part out of the forming cavity 12 of the moving mold 2.

[0023] The circuits and controls involved in the present utility model are all prior arts and will not be elaborated here.

[0024] The above are only embodiments of the present utility model, and thus do not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present utility model.

Claims

1. A gate water inlet deceleration structure for an aluminum alloy die-casting mold, comprising a mold body (1), wherein a moving mold (2), a moving mold base plate (3), a runner system (4) and a rejection system (5) are arranged on the mold body (1), and it is characterized in that, A tower-type speed reduction mechanism is provided between the runner system (4) and the mold body (1), and the tower-type speed reduction mechanism includes two central runner channels (6) and four side runner channels (7).

2. The gate water inlet deceleration structure of the aluminum alloy die-casting mold according to claim 1, characterized in that, Buffer platforms (8) are provided at the two central runner channels (6).

3. The gate water inlet deceleration structure of the aluminum alloy die-casting mold according to claim 2, characterized in that, The buffer platforms (8) are rounded at the sharp corners, and the height and length of the buffer platforms (8) are both 3 mm.

4. The decelerating structure for the gate water inlet of the aluminum alloy die-casting mold according to claim 3, wherein, A push rod fixing plate (9) is provided below the moving die base plate (3), and a number of push rods (10) are installed at intervals on the push rod fixing plate (9).

5. The gate water inlet deceleration structure of the aluminum alloy die-casting mold according to claim 4, wherein, A stationary mold (11) is provided below the moving mold (2), a molding cavity (12) is provided at the stationary mold (11), a number of through holes (14) are formed on both the moving mold (2) and the stationary mold (11), and a number of moving mold guide columns (13) are provided between the stationary mold (11) and the moving mold (2), and the moving mold guide columns (13) penetrate through the through holes (14).

6. The gate water inlet deceleration structure of the aluminum alloy die-casting mold according to claim 5, characterized in that, A cooling water channel (15) is provided on one side of the stationary mold (11).

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