Center gating three-plate die-casting die

Abstract

The utility model provides a center pouring three-plate die-casting die which comprises a first fixed die plate, a second fixed die plate, a movable die plate B, square iron and a bottom plate, a plurality of pull rods are arranged between the first fixed die plate and the second fixed die plate, the pull rods are fixedly connected with the first fixed die plate, the pull rods are connected with the second fixed die plate in a sliding mode, and the bottom plate is connected with the movable die plate B in a sliding mode. A die casting is installed in the center of the movable die B plate, an overflow bag is arranged on the side, close to the movable die B plate, of the die casting, a plurality of exhaust channels are arranged at the overflow bag in a communicating mode, a center runner is installed on the other side of the die casting, a main runner is arranged in the second fixed die plate, and a material cake is arranged in the first fixed die plate. According to the two-plate die-casting die, the problem that according to an existing two-plate die-casting die, bad defects such as air holes, cold shut and water waves are prone to being generated on die-casting pieces is solved, and the two-plate die-casting die solves the problem that according to an existing two-plate die-casting die, the die-casting pieces are prone to generating bad defects such as the air holes, the cold shut and the water waves.

Description

Technical Field

[0001] The utility model relates to the field of molds, in particular to a central-pouring three-plate die-casting mold. Background Art

[0002] Die casting is a method of casting liquid die forging, a process completed on a dedicated die forging machine. Its basic process is: the molten metal is first cast and filled into the mold cavity at a low or high speed. The mold has a movable cavity surface. It is pressurized and forged with the cooling process of the molten metal, which not only eliminates the shrinkage and porosity defects of the blank, but also makes the internal structure of the blank reach the broken grains of the forged state. The comprehensive mechanical properties of the blank are significantly improved.

[0003] At present, in the manufacturing process of special die-casting parts, the use of two-plate die-casting molds is not conducive to the liquid metal filling all around the mold at the same time, and is not conducive to the gas discharge from top to bottom or inside to outside, which can easily cause die-casting parts to have defects such as pores, cold shuts, and water marks.

[0004] Therefore, it is necessary to provide a new center-injection three-plate die casting mold to solve the above-mentioned technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a three-plate die-casting mold with center-feeding, which solves the problem that the current two-plate die-casting mold easily causes die-casting parts to have defects such as pores, cold shuts, and water marks.

[0006] The center-casting three-plate die-casting mold provided by the utility model comprises a first fixed mold plate, a second fixed mold plate, a movable mold B plate, a square iron and a bottom plate, a plurality of tie rods are arranged between the first fixed mold plate and the second fixed mold plate, the tie rods are fixedly connected to the first fixed mold plate, and the tie rods are slidably connected to the second fixed mold plate;

[0007] A die casting is installed at the center of the movable mold B plate, an overflow bag is arranged on one side of the die casting close to the movable mold B plate, a plurality of exhaust passages are connected to the overflow bag, a central flow channel is arranged on the other side of the die casting, and the central flow channel is located inside the second fixed mold plate;

[0008] A main flow channel is arranged inside the first fixed mold plate, a material cake is arranged inside the first fixed mold plate, the main flow channel is communicated with the material cake, and the main flow channel is communicated with the central flow channel.

[0009] In a preferred embodiment, a splitter cone is provided between the central flow channel and the main flow channel.

[0010] In a preferred embodiment, two buckle machines are arranged between the second fixed mold plate and the movable mold plate B.

[0011] In a preferred embodiment, a gap of 0.5 mm is left between the first fixed template and the second fixed template.

[0012] In a preferred embodiment, the ejector pin position between the second fixed mold plate and the movable mold B plate and the space 25 mm below the material level are avoided.

[0013] In a preferred embodiment, the first fixed mold plate, the second fixed mold plate and the movable mold B plate are made of ASSAB 8407.

[0014] Beneficial effects of the utility model:

[0015] Compared with the existing side pouring, the center pouring of the three-plate mold special die casting is more conducive to the simultaneous filling of liquid metal to all sides. The liquid metal is filled from top to bottom or inside to outside, which is conducive to the discharge of gas from top to bottom or inside to outside, reducing the die casting defects such as porosity, cold shut, water marks, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional view of the main structure of the center-feed three-plate die-casting mold provided by the utility model;

[0017] Figure 2 for Figure 1 A top view of

[0018] Figure 3 for Figure 2 AA surface section view;

[0019] Figure 4 for Figure 2 BB surface cross-sectional view;

[0020] Figure 5 for Figure 4 Schematic diagram of the enlarged structure of A shown.

[0021] Numbers in the figure: 1. First fixed mold plate; 2. Second fixed mold plate; 3. Moving mold plate B; 4. Square iron; 5. Bottom plate; 6. Locking machine; 7. Pull rod; 8. Die casting; 9. Overflow bag; 10. Center flow channel; 11. Main flow channel; 12. Material cake; 13. Diverter cone. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0023] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 5 ,in Figure 1A three-dimensional view of the main structure of the center-feed three-plate die-casting mold provided by the utility model; Figure 2 for Figure 1 A top view of Figure 3 for Figure 2 AA surface section view; Figure 4 for Figure 2 BB surface cross-sectional view; Figure 5 for Figure 4 Schematic diagram of the enlarged structure of A shown.

[0024] In the specific implementation process, Figure 1-Figure 5 As shown, it includes a first fixed mold plate 1, a second fixed mold plate 2, a movable mold B plate 3, a square iron 4 and a bottom plate 5. A 0.5mm gap is left between the first fixed mold plate 1 and the second fixed mold plate 2. The ejector pin position between the second fixed mold plate 2 and the movable mold B plate 3 and a space 25mm below the material level are avoided. The first fixed mold plate 1, the second fixed mold plate 2 and the movable mold B plate 3 are made of ASSAB 8407.

[0025] A plurality of tie rods 7 are arranged between the first fixed mold plate 1 and the second fixed mold plate 2. The tie rods 7 are fixedly connected to the first fixed mold plate 1 and are slidably connected to the second fixed mold plate 2. Two locking machines 6 are arranged between the second fixed mold plate 2 and the movable mold B plate 3. When the movable and fixed molds are separated by a certain distance, the first fixed mold plate 1 uses the tie rods 7 to pull the second fixed mold plate 2 to separate the locking machines 6.

[0026] A die casting 8 is installed at the center of the movable mold B plate 3, and an overflow bag 9 is arranged on the side of the die casting 8 close to the movable mold B plate 3. A plurality of exhaust passages are connected to the overflow bag 9. A central flow channel 10 is arranged on the other side of the die casting 8, and the central flow channel 10 is located inside the second fixed mold plate 2, a main flow channel 11 is arranged inside the first fixed mold plate 1, and a material cake 12 is arranged inside the first fixed mold plate 1, and the main flow channel 11 is connected with the material cake 12, and the main flow channel 11 is connected with the central flow channel 10.

[0027] A diverter cone 13 is provided between the central flow channel 10 and the main flow channel 11. The function of the diverter cone 13 is to distribute all the materials in the central flow channel 10 to various areas of the main flow channel 11 in proportion. The angle is within 70 degrees. The better the material fluidity, the larger the angle value is, so as to form back pressure and further plasticize the material.

[0028] The working steps of the utility model are as follows:

[0029] 1. When opening the mold, first use the buckle machine 6 to buckle the movable mold B plate 3 and the second fixed mold plate 2, and separate the first fixed mold plate 1 and the second fixed mold plate 2 to pull off the intersection of the main flow channel 11 and the central flow channel 10.

[0030] 2. When the movable and fixed molds are separated by a certain distance, the first fixed mold plate 1 uses a pull rod 7 to pull the second fixed mold plate 2 to separate the buckle machine 6.

[0031] 3. Eject the casting.

[0032] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0033] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A center-cast three-plate die-casting mold, comprising a first fixed mold plate (1), a second fixed mold plate (2), a movable mold plate B (3), a square iron (4) and a bottom plate (5), characterized in that: A plurality of tie rods (7) are provided between the first fixed die plate (1) and the second fixed die plate (2); the tie rods (7) are fixedly connected to the first fixed die plate (1), and the tie rods (7) are slidably connected to the second fixed die plate (2); A die casting (8) is installed at the center of the movable mold B plate (3); an overflow bag (9) is arranged on one side of the die casting (8) close to the movable mold B plate (3); a plurality of exhaust passages are connected to the overflow bag (9); a central flow channel (10) is arranged on the other side of the die casting (8), and the central flow channel (10) is located inside the second fixed mold plate (2); A main flow channel (11) is arranged inside the first fixed mold plate (1), a material cake (12) is arranged inside the first fixed mold plate (1), the main flow channel (11) is connected to the material cake (12), and the main flow channel (11) is connected to the central flow channel (10).

2. The center-feed three-plate die casting mold according to claim 1, characterized in that: A flow splitter cone (13) is provided between the central flow channel (10) and the main flow channel (11).

3. The center-feed three-plate die casting mold according to claim 2, characterized in that: Two locking machines (6) are arranged between the second fixed mold plate (2) and the movable mold B plate (3).

4. The center-feed three-plate die casting mold according to claim 3, characterized in that: A gap of 0.5 mm is left between the first fixed mold plate (1) and the second fixed mold plate (2).

5. The center-feed three-plate die casting mold according to claim 4, characterized in that: The ejector pin position between the second fixed mold plate (2) and the movable mold B plate (3) and the space 25 mm below the material level are kept clear.

6. The center-feed three-plate die casting mold according to claim 5, characterized in that: The first fixed mold plate (1), the second fixed mold plate (2) and the movable mold plate B (3) are made of ASSAB 8407.

Images