Magnesium alloy casting forming die and magnesium alloy casting

Abstract

The utility model discloses a magnesium alloy casting forming die which comprises a front die core and a rear die core which are matched with each other, the front die core comprises a first forming cavity, the first forming cavity is provided with a first forming face, and at least one forming through hole penetrating through the first forming face is formed in the front die core. At least one protruding rib surrounding the forming through hole is further arranged on the first forming face in a protruding mode, one end of the protruding rib extends to the edge of the forming through hole, when a product is formed, magnesium alloy raw materials are guided through the protruding rib, the magnesium alloy raw materials are fully injected into the forming hole of the column, full filling is achieved, and therefore the problem that the interior of the column is not cast enough is solved. Sand holes are prevented from appearing in the column, the production yield is effectively improved, and products meet the assembly requirements of customers. The utility model further discloses a magnesium alloy casting formed by using the magnesium alloy casting forming die.

Description

TECHNICAL FIELD

[0001] The utility model relates to mould processing technical field especially relates to a magnesium alloy casting forming die and magnesium alloy casting that effectively improve internal sand hole of casting. BACKGROUND

[0002] With the continuous development of automobile industry, the quality and assembly requirement of automobile central control screen are higher and higher, and the product structure is more and more complex. For vehicle-mounted central control screen, the magnesium alloy support of light weight is generally adopted at present, and the style is more and more complex. Moreover, the requirement of customer on product cost control is higher and higher.

[0003] The internal sand hole of the connecting column of the existing magnesium alloy support with self-tapping screw hole is serious, which can easily lead to self-tapping screw slipping in the assembly process, and affects the use of customer. According to the analysis of the reason of sand hole according to the structural characteristics of the existing product, the main reason is that the feeding in the deep cavity is insufficient in the forming process, which leads to the under-casting in the column, thereby leading to the serious internal sand hole, and affecting the assembly of customer.

[0004] Therefore, it is necessary to provide a forming die capable of effectively solving the internal sand hole of the deep cavity of magnesium alloy casting and improving the production yield, so as to solve the above problems. SUMMARY

[0005] The utility model discloses a magnesium alloy casting forming die capable of effectively solving the internal sand hole of the deep cavity of magnesium alloy casting and improving the production yield.

[0006] The utility model discloses a magnesium alloy casting capable of effectively solving the internal sand hole of the deep cavity and improving the production yield.

[0007] In order to achieve the above-mentioned purpose, the technical scheme of the utility model is as follows: a magnesium alloy casting forming die is provided, which comprises a front die and a rear die matched with each other, wherein the front die comprises a first forming cavity, the first forming cavity has a first forming surface, at least one forming through hole penetrating through the first forming surface is formed on the front die, at least one convex rib surrounding the forming through hole is further convexly arranged on the first forming surface, and one end of the convex rib extends to the edge of the forming through hole.

[0008] Preferably, a plurality of convex ribs are provided corresponding to each forming through hole, and the plurality of convex ribs are arranged radially along the edge of the forming through hole. The magnesium alloy raw material is fully injected into the column forming hole through the plurality of convex ribs, so as to improve the problem of under-casting in the column, avoid the internal sand hole of the column, and make the product meet the assembly requirement of customer.

[0009] Preferably, two ribs are provided corresponding to each of the through holes, and the two ribs are staggered.

[0010] Preferably, the two ribs are arranged in a splayed shape, so that the magnesium alloy raw material can be introduced into the column forming hole from the staggered direction, and the efficiency of introduction is higher.

[0011] Preferably, the back die core is provided with a second forming cavity matched with the first forming cavity, the second forming cavity has a second forming surface matched with the first forming surface, and a column forming hole is provided on the second forming surface corresponding to the position of the through hole.

[0012] Correspondingly, the utility model also provides a magnesium alloy casting formed by the magnesium alloy casting forming die, which comprises opposite first and second surfaces, the second surface is provided with at least one column, each of the columns is provided with a connecting hole penetrating through the first surface, and at least one groove is recessed around each of the connecting holes on the first surface, and one end of the groove extends to the edge of the connecting hole.

[0013] Preferably, a plurality of grooves are recessed corresponding to each of the connecting holes of the columns, and the grooves are arranged radially along the edge of the connecting hole.

[0014] Preferably, two grooves are recessed corresponding to each of the connecting holes of the columns, and the two grooves are staggered.

[0015] Preferably, the two grooves are arranged in a splayed shape.

[0016] Compared with the prior art, since the magnesium alloy casting forming die of the utility model has at least one rib around the through hole on the first forming surface of the front die core, one end of the rib extends to the edge of the through hole, the magnesium alloy raw material is guided by the rib, the magnesium alloy raw material is fully injected into the column forming hole, the problem of insufficient casting in the column is solved, sand holes in the column are avoided, the production yield is effectively improved, and the product meets the assembly requirements of customers. Moreover, the X-ray full inspection process can be cancelled in the production process, so that the production efficiency of the product is effectively improved.

[0017] Correspondingly, the magnesium alloy casting formed by the magnesium alloy casting forming die of the utility model has no visible sand holes in the column, the product yield is effectively improved, and the assembly requirements of customers are met. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic view of a front mold core of a magnesium alloy casting forming mold.

[0019] Figure 2 is Figure 1 is an enlarged schematic view of part A.

[0020] Figure 3 is a structural schematic view of a magnesium alloy casting.

[0021] Figure 4 is Figure 3 is an enlarged schematic view of part B.

[0022] Figure 5 is Figure 3 is a structural schematic view from another angle. DETAILED DESCRIPTION

[0023] Embodiments of the present application will now be described with reference to the accompanying drawings, in which like reference numerals refer to like elements throughout. It should be noted that the positional descriptions, such as upper, lower, left, right, front, back, etc., described in the present application are based on the positional or location relationships shown in the drawings, and are merely for the convenience of describing the technical solutions of the present application or simplifying the description, and thus should not be construed as indicating or implying that the devices or elements referred to must have a particular position, be constructed in a particular position, and be operated in a particular position, and thus should not be construed as a limitation on the present application. The first, second, etc., described are merely used to distinguish technical features, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the sequence of technical features indicated.

[0024] In combination with Figures 1-5 shown, the magnesium alloy die casting forming mold provided by the present application is mainly used for forming a shell or bracket with a deep hole column used for a vehicle-mounted central control screen. Of course, it is not limited to the forming of the shell or bracket used for the vehicle-mounted central control screen, and the forming of other similar metal die castings with deep hole columns can also be designed with reference to the forming mold of the present application.

[0025] First, in combination with Figures 1-2 shown, in an embodiment of the present application, the magnesium alloy casting forming mold provided includes a front mold core 100 and a rear mold core (not shown) that cooperate with each other. The front mold core 100 and the rear mold core are closed to form a forming cavity. The shape of the forming cavity is set according to the product forming needs, which is not specifically limited in the present application.

[0026] Continuing to combine Figures 1-2As shown, in the present embodiment, the front die core 100 comprises a first forming cavity 110, which has a first forming surface 111 for forming a surface of the product, and the shape of the first forming surface 111 is not limited to be planar, curved, or bent, etc. Figure 1 As shown, the first forming surface 111 is in a bent shape. In addition, the front die core 100 is provided with at least one forming through hole 120 penetrating the first forming surface 111, specifically, the forming through hole 120 is provided along the thickness direction of the front die core 100 and penetrates the top surface and the first forming surface 111. The number of the forming through holes 120 is determined according to the number of deep hole columns required on the product, which is not limited herein. In the present embodiment, the first forming surface 111 is further provided with at least one rib 112 surrounding the forming through hole 120, that is, at least one rib 112 is provided around each forming through hole 120, and one end of the rib 112 extends to the edge of the forming through hole 120, as shown. Figure 2

[0027] Correspondingly, the rear die core is provided with a second forming cavity matched with the first forming cavity 110, the second forming cavity has a second forming surface matched with the first forming surface 111, and the second forming surface is provided with a column forming hole corresponding to the position of the forming through hole 120. In this way, when the front die core 100 is closed with the rear die core, the first forming cavity 110 and the second forming cavity are closed to form an overall forming cavity. The first forming surface 111 and the second forming surface form two surfaces of the product respectively, and at the same time, the column forming hole forms a column of the product and an integrated connecting hole on the column.

[0028] The structures of other parts of the front die core 100 and the rear die core are conventional structures in the art, which will not be described in detail.

[0029] Continuing to combine Figures 1-2 As shown, in one embodiment, a plurality of ribs 112 are provided around each forming through hole 120, the plurality of ribs 112 are arranged radially along the edge of the forming through hole 120, and one end of each rib 112 extends to the edge of the forming through hole 120. In this way, during the forming of the product, the flow and injection of the magnesium alloy raw material in the forming cavity are guided by the ribs 112, and the magnesium alloy raw material is fully injected into the column forming hole through the guidance of the plurality of radial ribs 112, so that the magnesium alloy raw material is filled sufficiently, thereby improving the problem of underfilling in the column, avoiding the occurrence of sand holes in the column, and making the product meet the assembly requirements of customers. Of course, the number of the ribs 112 can be flexibly set according to the size of the column forming hole.

[0030] Again, combining Figures 1-2 ​As shown in the specific embodiment of the utility model, two protruding ribs 112 are provided corresponding to each of the shaped through holes 120, and the two protruding ribs 112 are arranged staggeredly. Specifically, an included angle is formed between the two protruding ribs 112 and the center line of the shaped through hole 120, and the included angle is less than 180°. That is, the extension lines of the two protruding ribs 112 intersect, or the two protruding ribs 112 are not located on the same straight line. By arranging the two staggered protruding ribs 112, the number of protruding ribs 112 on the first shaped surface 111 is reduced under the premise of guiding the magnesium alloy raw material to be fully injected into the column-shaped hole, and the structure of the front mold core 100 is simplified.

[0031] As shown in the specific embodiment of the utility model, Figure 2 In the specific embodiment, the two protruding ribs 112 are arranged in a substantially eight-shaped manner, so that the magnesium alloy raw material can be introduced into the column-shaped hole from two staggered directions, achieving better guiding effect. Understandably, the two protruding ribs 112 are not limited to the above-mentioned angle relationship, and the two protruding ribs 112 can be arranged in parallel and the magnesium alloy raw material can be introduced into the column-shaped hole from two directions, or the two protruding ribs 112 can be arranged on the same straight line to achieve two-direction guiding, which is feasible and can be flexibly arranged according to the structure of the first shaped surface 111.

[0032] In the following Figures 3-5 As shown in another embodiment of the utility model, a magnesium alloy casting 200 is also provided, which is formed by using the magnesium alloy casting forming mold described above. Specifically, the magnesium alloy casting 200 includes opposite first and second surfaces 210 and 220. The second surface 220 is provided with at least one column 230, and the column 230 is integrally formed with a connecting hole 231 penetrating the first surface 210, as shown in the figure, which is used for installing a locking member to directly lock the magnesium alloy casting 200 and other components. Figure 4 In the embodiment, the connecting hole 231 is preferably a self-tapping screw hole for installing a self-tapping screw, of course, without being limited thereto.

[0033] In the following Figures 3-4 As shown in the embodiment, at least one recess 211 is recessed around the connecting hole 231 on the first surface 210, and one end of the recess 211 extends to the edge of the connecting hole 231. In an embodiment, a plurality of recesses 211 are recessed corresponding to the connecting hole 231 of each column 230, and the plurality of recesses 211 are arranged radially along the edge of the connecting hole 231. Of course, the number of recesses 211 is determined by the number of protruding ribs 112 on the forming mold, which is not specifically limited here.

[0034] In one specific embodiment, two recessed grooves 211 are provided for each connecting hole 231 of the column 230, and the two grooves 211 are staggered. Specifically, the two grooves 211 form an angle with the center line of the connecting hole 231, which is less than 180°. That is, the extension lines of the two grooves 211 intersect, or the two grooves 211 are not located on the same straight line. During the forming process of the magnesium alloy casting 200, the two staggered ribs 112 provided on the front mold core 100 guide the magnesium alloy raw material into the column forming hole, so that the magnesium alloy raw material is fully injected into the column forming hole, achieving full filling, thereby avoiding sand holes inside the column 230.

[0035] In this specific embodiment, the two grooves 211 are arranged in a roughly V-shape. It can be understood that the two grooves 211 can also be parallel or arranged on the same straight line, which is specifically determined by the shape of the ribs 112 provided on the front mold core 100.

[0036] The following is combined Figures 1-5 As shown, the working principle of the magnesium alloy casting mold of this utility model and the magnesium alloy casting 200 obtained by forming it are explained.

[0037] Combination Figures 1-2 As shown, when the front mold core 100 and the rear mold core are closed, the first molding cavity 110 and the second molding cavity are closed to form an integral molding cavity. After the magnesium alloy raw material is injected into the molding cavity, at the position of the column molding hole, due to the guidance of the two intersecting ribs 112, the magnesium alloy raw material is fully injected into the column molding hole, and the magnesium alloy raw material is fully filled, thereby improving the problem of under-casting inside the column.

[0038] Combination Figures 3-5 As shown, the magnesium alloy casting 200 obtained by forming with the magnesium alloy casting mold of this application has no visible sand holes in the column 230 part after wire cutting and inspection, thus meeting the customer's assembly requirements.

[0039] Furthermore, by setting ribs 112 on the front mold core 100, the problem of sand holes inside the column 230 can be effectively solved. Therefore, the X-ray full inspection process can be eliminated during production, thereby effectively improving product production efficiency.

[0040] In summary, the magnesium alloy casting forming die, at least one convex rib 112 around the forming through hole 120 is arranged on the first forming surface 111 of the front mold core 100, one end of the convex rib 112 extends to the edge of the forming through hole 120, so that the magnesium alloy raw material is guided through the convex rib 112, the magnesium alloy raw material is fully injected into the column forming hole, the problem of insufficient filling of the column 230 is solved, the sand hole in the column 230 is avoided, the production yield is effectively improved, and the product meets the customer assembly requirements. And, the X-ray full inspection process can be cancelled in the production process, thereby effectively improving the product production efficiency.

[0041] Correspondingly, the magnesium alloy casting 200 formed by the magnesium alloy casting forming die of the present application has no visible sand hole in the column 230, effectively improves the product yield, and meets the customer assembly requirements.

[0042] The structures of other parts of the magnesium alloy casting forming die are conventional structures known to those skilled in the art, and will not be described in detail here.

[0043] The above only discloses preferred embodiments of the present application, and of course cannot limit the scope of the present application, so equivalent changes made in the scope of the present application are still within the scope of the present application.

Claims

1. A magnesium alloy casting forming die comprising a mating front and back die, characterized by, The front core includes a first forming cavity with a first forming surface, at least one forming through hole is formed through the first forming surface, and at least one convex rib is formed around the forming through hole.

2. The magnesium alloy casting forming mold according to claim 1, wherein A plurality of convex ribs are formed around each forming through hole, and the convex ribs are arranged radially along the edge of the forming through hole.

3. The magnesium alloy casting mold of claim 1, wherein Two convex ribs are formed around each forming through hole, and the two convex ribs are arranged alternately.

4. The magnesium alloy casting forming mold according to claim 3, wherein The two convex ribs are arranged in a splayed shape.

5. The magnesium alloy cast product forming mold according to any one of claims 1 to 4, characterized in that, The rear core is provided with a second forming cavity matched with the first forming cavity, the second forming cavity has a second forming surface matched with the first forming surface, and a column forming hole is formed on the second forming surface corresponding to the position of the forming through hole.

6. A magnesium alloy casting formed using the magnesium alloy casting forming mold according to any one of claims 1 to 5, characterized by The second surface is provided with at least one column, each column is provided with a connecting hole penetrating through the first surface, and at least one recess is formed around each connecting hole on the first surface, and one end of the recess extends to the edge of the connecting hole.

7. The magnesium alloy casting according to claim 6, characterized by A plurality of recesses are formed around each connecting hole of each column, and the recesses are arranged radially along the edge of the connecting hole.

8. The magnesium alloy casting according to claim 6, wherein Two recesses are formed around each connecting hole of each column, and the two recesses are arranged alternately.

9. The magnesium alloy casting according to claim 8, characterized by The two recesses are arranged in a splayed shape.

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