Magnesium alloy semi-solid forming die structure for improving shrinkage

Abstract

The magnesium alloy semi-solid forming die structure for improving shrinkage comprises a water inlet end module, a left exhaust module, a right exhaust module and a cinder ladle module, and the water inlet end module, the left exhaust module, the right exhaust module and the cinder ladle module jointly define a forming cavity. The left exhaust module and the right exhaust module are located on the left side and the right side of the forming cavity, the water inlet end module and the cinder ladle module are located on the upper side and the lower side of the forming cavity, the water inlet end module comprises a guide face, a groove and a connecting plane which are sequentially connected, and a groove structure used for pressure relief is formed in one side of the connecting plane. The die structure for improving shrinkage in magnesium alloy semi-solid forming can be suitable for semi-solid forming of magnesium alloy and effectively avoids product cracking.

Description

Technical Field

[0001] The utility model relates to the technical field of die processing, in particular to a die structure for improving shrinkage in the semi-solid forming of magnesium alloys. Background Art

[0002] Currently, a semi-solid forming solution is used for radar antennas. Due to the product structure, the local wall thickness is uneven, and shrinkage problems are likely to occur in the thick-walled areas. Refer to Figure 1 For traditional die-casting forming, the improvement solution for shrinkage is to increase the injection volume at the shrinkage position for feeding, such as increasing the number of gates or thickening the gates. Since the flow state of magnesium material entering the cavity in traditional die-casting forming is in a jet shape, while the flow state of magnesium material entering the cavity in semi-solid forming is in a pushing shape, the difference in flow states results in poor effect of using traditional methods of increasing gates or thickening gates to improve shrinkage problems. For example, cracks are likely to occur at the bottom of the channel groove of the antenna cover product before optimization. In other words, due to the difference in materials, the products produced by the old die gate system can no longer meet the existing production requirements.

[0003] Therefore, there is an urgent need for a die structure for improving shrinkage in the semi-solid forming of magnesium alloys. Summary of the Utility Model

[0004] The technical problem solved by the utility model is to provide a die structure for improving shrinkage in the semi-solid forming of magnesium alloys that can be applied to semi-solid forming magnesium alloys and effectively avoid product cracking.

[0005] To solve the above technical problem, the die structure for improving shrinkage in the semi-solid forming of magnesium alloys provided by the utility model includes an inlet-end module, a left exhaust module, a right exhaust module, and a slag pocket module. The inlet-end module, the left exhaust module, the right exhaust module, and the slag pocket module jointly enclose to form a forming cavity. The left exhaust module and the right exhaust module are located on the left and right sides of the forming cavity respectively. The inlet-end module and the slag pocket module are located on the upper and lower sides of the forming cavity respectively. The inlet-end module includes a guiding surface, a groove, and a connecting plane connected in sequence. A groove structure for pressure relief is provided on one side of the connecting plane.

[0006] Preferably, the groove includes a first inclined surface and a second inclined surface. The first inclined surface intersects with the second inclined surface. The free end of the first inclined surface is connected to the guiding surface, and the free end of the second inclined surface is connected to the connecting plane.

[0007] Specifically, the cross-section after the connection of the first inclined surface and the second inclined surface is in a "V" shape.

[0008] Preferably, the groove structure is arranged close to the right exhaust module.

[0009] Specifically, the trough structure has a first trough opening facing upward and a second trough opening communicating with the edge of the connection plane.

[0010] Preferably, the left exhaust module includes two strip-shaped first exhaust strips, which are arranged at intervals and are parallel to each other.

[0011] Preferably, the right exhaust module includes two strip-shaped second exhaust strips, which are arranged at intervals and are parallel to each other.

[0012] Preferably, the slag pocket module includes a plurality of slag pocket blocks.

[0013] Specifically, the slag pocket blocks are arranged at equal intervals.

[0014] Compared with the prior art, a major improvement of the mold structure for improving shrinkage in the semi-solid forming of magnesium alloy of the present invention lies in adding a trough structure. A gate is formed at the water inlet end module, which is contrary to the conventional die-casting treatment idea. Shrinkage can be understood as less material in the product. The conventional die-casting treatment solution mainly supplements by increasing the amount of plastic injection. Due to its own material properties, in the semi-solid state of magnesium alloy, the plastic injection into the thick-wall area of the product needs to be avoided instead. Otherwise, cracking will occur. Therefore, the present invention adds a trough structure. When the feeding amount increases suddenly, the trough structure can play a role in pressure relief, so that the gate avoids the shrinkage area and does not directly impact the wall thickness area of the product, thus effectively avoiding the phenomenon of product cracking. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the mold structure of the prior art;

[0016] Figure 2 is a schematic structural diagram of the mold structure for improving shrinkage in the semi-solid forming of magnesium alloy provided by the present invention.

[0017] Figure 3 is Figure 2 a partial enlarged view of A in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The present invention will be further described below with reference to the drawings and embodiments.

[0019] Please refer to Figures 2 to 3, the mold structure for improving shrinkage in the semi-solid forming of magnesium alloy of the present utility model includes an inlet end module 1, a left exhaust module 2, a right exhaust module 3 and a slag trap module 4. The inlet end module 1, the left exhaust module 2, the right exhaust module 3 and the slag trap module 4 jointly enclose to form a forming cavity 5. The left exhaust module 2 and the right exhaust module 3 are located on the left and right sides of the forming cavity 5, and the inlet end module 1 and the slag trap module 4 are located on the upper and lower sides of the forming cavity 5. The inlet end module 1 includes a guiding surface 11, a groove 12 and a connecting plane 13 connected in sequence. A groove structure 14 for pressure relief is provided on one side of the connecting plane 13. Due to the addition of the groove structure 14, a gate is formed at the inlet end module 1. Contrary to the conventional die-casting treatment idea, shrinkage can be understood as less material in the product. The conventional die-casting treatment solution mainly supplements by increasing the injection volume. For semi-solid magnesium alloy, due to its own material properties, it is the opposite. When injecting into the thick-wall area of the product, it needs to avoid injection, otherwise cracking will occur. Therefore, the present utility model adds the groove structure 14. When the feeding volume suddenly increases, the groove structure 14 can play a role in pressure relief, so that the gate avoids the shrinkage area and does not directly face the thick area of the product, thus effectively avoiding the phenomenon of product cracking. More specifically, as follows:

[0020] Please refer to Figures 2 to 3 , the groove 12 includes a first inclined surface 121 and a second inclined surface 122. The first inclined surface 121 intersects with the second inclined surface 122. The free end of the first inclined surface 121 is connected to the guiding surface 11, and the free end of the second inclined surface 122 is connected to the connecting plane 13. Specifically, the cross-section after the connection of the first inclined surface 121 and the second inclined surface 122 is in a "V" shape. When injecting glue, the glue can form a buffer.

[0021] Please refer to Figures 2 to 3 , the groove structure 14 is arranged close to the right exhaust module 3. Specifically, the groove structure 14 has a first notch 141 with an upward opening and a second notch 142 communicating with the edge of the connecting plane 13. The concave structures of the first notch 141 and the second notch 142 can play a role in pressure relief for the glue.

[0022] Please refer to Figures 2 to 3 , the left exhaust module 2 includes two strip-shaped first exhaust strips 21. The first exhaust strips 21 are arranged at intervals, and the two first exhaust strips 21 are arranged in parallel.

[0023] Please refer to Figures 2 to 3 , the right exhaust module 3 includes two strip-shaped second exhaust strips 31. The second exhaust strips 31 are arranged at intervals, and the two second exhaust strips 31 are arranged in parallel.

[0024] Please refer to Figures 2 to 3 , the slag trap module 4 includes a plurality of slag trap blocks 41. Preferably, the slag trap blocks 41 are arranged at equal intervals, but not limited thereto.

[0025] One of the major improvements of the mold structure for improving shrinkage in the semi-solid forming of magnesium alloy of the present utility model lies in adding a tank structure 14. A gate is formed at the water inlet end module 1. Contrary to the conventional die-casting treatment idea, shrinkage can be understood as less material in the product. The conventional die-casting treatment solution mainly supplements by increasing the injection volume. Due to its own material properties, the semi-solid magnesium alloy does the opposite. It needs to avoid injecting into the thick-wall area of the product. Otherwise, cracking will occur. Therefore, the present utility model adds a tank structure 14. When the feeding volume suddenly increases, the tank structure 14 can play a role in pressure relief, enabling the gate to avoid the shrinkage area and not directly facing the product wall thickness area, thus effectively avoiding the phenomenon of product cracking.

[0026] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. 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 mold structure for semi-solid forming of magnesium alloy to improve shrinkage, characterized in that, It includes a water inlet end module, a left exhaust module, a right exhaust module and a slag pocket module. The water inlet end module, the left exhaust module, the right exhaust module and the slag pocket module jointly enclose to form a molding cavity. The left exhaust module and the right exhaust module are located on the left and right sides of the molding cavity respectively. The water inlet end module and the slag pocket module are located on the upper and lower sides of the molding cavity. The water inlet end module includes a guiding surface, a groove and a connecting plane connected in sequence. A groove structure for pressure relief is provided on one side of the connecting plane.

2. The die structure for improving shrinkage in the semi-solid forming of magnesium alloy according to claim 1, characterized in that, The groove includes a first inclined surface and a second inclined surface. The first inclined surface intersects with the second inclined surface. The free end of the first inclined surface is connected to the guiding surface, and the free end of the second inclined surface is connected to the connecting plane.

3. The die structure for improving shrinkage in semi-solid forming of magnesium alloy according to claim 2, characterized in that, The cross-section after the connection of the first inclined surface and the second inclined surface is in a "V" shape.

4. The die structure for improving shrinkage in semi-solid forming of magnesium alloy according to claim 1, characterized in that, The groove structure is arranged close to the right exhaust module.

5. The mold structure for improving shrinkage in the semi-solid forming of magnesium alloy according to claim 4, characterized in that, The groove structure has a first notch with an upward opening and a second notch communicating with the edge of the connecting plane.

6. The mold structure for improving shrinkage in semi-solid forming of magnesium alloy according to claim 1, characterized in that, The left exhaust module includes two strip-shaped first exhaust strips. The first exhaust strips are arranged at intervals and are parallel to each other.

7. The mold structure for improving shrinkage in semi-solid forming of magnesium alloy according to claim 1, characterized in that, The right exhaust module includes two strip-shaped second exhaust strips. The second exhaust strips are arranged at intervals and are parallel to each other.

8. The die structure for improving shrinkage in the semi-solid forming of magnesium alloy according to claim 1, characterized in that, The slag pocket module includes a plurality of slag pocket blocks.

9. The mold structure for improving shrinkage in semi-solid forming of magnesium alloy according to claim 8, characterized in that, The slag pocket blocks are arranged at equal intervals.

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