A die casting mold

Abstract

This utility model belongs to the field of mold processing technology and discloses a die-casting mold. It includes an upper module and a lower module, with the upper module mounted on the lower module. The upper module has a first contact surface, and the lower module has a second contact surface. The first and second contact surfaces are in contact with each other. A first groove is formed on the first contact surface, and a second groove is formed on the second contact surface. The first and second grooves form a communicating cavity, and a pipe is installed within the communicating cavity, through which oil flows. This invention solves the problem in existing technologies where it is difficult to create oil channels on the mold, and where errors can occur when creating oil channels.

Description

Technical Field

[0001] This utility model relates to the field of mold processing technology, and in particular to a die casting mold. Background Technology

[0002] In the metal processing workflow, die casting is a process in which a die casting machine applies high pressure to molten metal to shape the metal within a mold, and then the metal is demolded after it cools and solidifies.

[0003] In existing die-casting molds, the mold temperature is relatively low during the first few die-casting processes. This causes the temperature of the molten metal in close contact with the mold to drop rapidly, resulting in uneven cooling of the molten metal. This leads to blockage of the flow cavities within the mold, resulting in gaps in the produced castings and ultimately producing scrap. Furthermore, after multiple processing cycles, the mold temperature is higher, which slows down the cooling rate of the molten metal, prolongs demolding time, and causes metal burrs on the castings. Current technology involves machining oil channels within the metal mold to control the mold temperature. However, large molds have deep drilling, which is prone to errors during machining, slows down the process, and introduces drilling errors. Additionally, some protrusions on the mold cannot accommodate oil channels, further contributing to uneven cooling of the castings and reducing the yield rate. Utility Model Content

[0004] The purpose of this utility model is to provide a die-casting mold that solves the problems of high difficulty in opening oil channels on the mold and errors in opening oil channels under the existing technology.

[0005] To achieve this objective, the present invention adopts the following technical solution: The present invention provides a die-casting mold, including an upper module and a lower module. The upper module is mounted on the lower module. A first contact surface is formed on the upper module, and a second contact surface is formed on the lower module. The first contact surface and the second contact surface are in contact. A first groove is formed on the first contact surface, and a second groove is formed on the second contact surface. The first groove and the second groove form a communicating cavity. A pipeline is installed in the communicating cavity, and oil flows in the pipeline.

[0006] Preferably, the first groove includes a first inlet section, a middle connecting section, and a first outlet section, wherein the first inlet section, the middle connecting section, and the first outlet section are connected in sequence, and the first inlet section and the first outlet section are L-shaped.

[0007] Preferably, the second groove includes a second inlet section and a second outlet section, wherein the first inlet section is connected to the second inlet section, and the first outlet section is connected to the second outlet section.

[0008] Preferably, the cross-sections of the first inlet section, the second inlet section, the first outlet section, and the second outlet section are semi-circular.

[0009] Preferably, the upper module has a protrusion, the middle connecting section is recessed towards the side of the protrusion, the middle connecting section and the second contact surface form a placement cavity, and the pipeline is connected to the placement cavity.

[0010] Preferably, the pipeline abuts against the inner wall of the central connecting section.

[0011] Preferably, a positioning block is formed by protrusion on the first contact surface, and a positioning groove is formed by recess on the second contact surface, with the positioning block inserted into the positioning groove.

[0012] Preferably, the upper module has a first positioning hole, and the lower module has a second positioning hole, with the bolt passing through the first positioning hole and the second positioning hole and being fastened to the nut.

[0013] Beneficial effects: By dividing the original die-casting mold into two, and opening the first and second grooves on the upper and lower modules, the first and second grooves can be spliced ​​together to form a connecting cavity. Pipelines are arranged in the connecting cavity, and the overall temperature of the die-casting mold is controlled by the oil flowing in the pipelines, thereby improving the yield rate of the die-casting mold during operation. Attached Figure Description

[0014] Figure 1 This is a drawing of the main body of the die-casting mold of this utility model;

[0015] Figure 2 This is a diagram of the main body of the lower module of this utility model;

[0016] Figure 3 This is a schematic diagram of the main body of the upper module of this utility model;

[0017] Figure 4 This is a schematic diagram of the pipeline installation of this utility model;

[0018] Figure 5 This is a schematic diagram of the cross-section of the die-casting mold of this utility model.

[0019] In the diagram: 1. Upper module; 11. First contact surface; 12. First groove; 121. First inlet section; 122. Middle connecting section; 123. First outlet section; 13. Protrusion; 14. Positioning block; 2. Lower module; 21. Second contact surface; 22. Second groove; 221. Second inlet section; 222. Second outlet section; 23. Positioning groove; 3. Pipeline; 4. First positioning hole; 5. Second positioning hole. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0021] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0024] In the current technology, in order to control the temperature of the die-casting mold, holes are usually made in the die-casting mold to introduce hot oil into the holes. However, due to the large volume of the die-casting mold, it is difficult to process deep holes, and it is also easy to make processing errors. At the same time, some iron filings are easy to remain inside the deep holes during the processing, which can easily cause flow channel blockage, thus reducing the yield of castings.

[0025] To solve the above problems, such as Figures 1 to 5As shown, this utility model provides a die-casting mold, including an upper module 1 and a lower module 2. The upper module 1 is mounted on the lower module 2. A first contact surface 11 is formed on the upper module 1, and a second contact surface 21 is formed on the lower module 2. The first contact surface 11 and the second contact surface 21 are in contact. A first groove 12 is formed on the first contact surface 11, and a second groove 22 is formed on the second contact surface 21. The first groove 12 and the second groove 22 form a communicating cavity. A pipe 3 is installed in the communicating cavity, and oil flows in the pipe 3.

[0026] This invention divides the original integral die-casting mold into two parts. A first groove 12 and a second groove 22 are formed on the first contact surface 11 and the second contact surface 21 of the upper module 1 and the lower module 2, respectively. The positions of the first groove 12 and the second groove 22 are vertically aligned, and they can be joined to form a connecting cavity. By pre-arranging a pipe 3 within the second groove 22, the pipe 3 can be placed within the connecting cavity after the upper module 1 and the lower module 2 are connected. Oil is placed within the pipe 3, and the temperature of the oil can be adjusted according to the needs of the die-casting mold. This allows the die-casting mold to heat up in the early stages of operation, ensuring a consistent cooling temperature for the castings, improving yield, and preventing premature solidification of molten metal in the flow channels, thus avoiding blockages. Simultaneously, the die-casting mold can be cooled in the later stages of operation to prevent slow cooling of the castings, thereby improving production efficiency. The first groove 12 and the second groove 22 are formed on the upper module 1 and the lower module 2 respectively, eliminating the need for opening holes in the large mold and reducing the processing difficulty of the connecting cavity.

[0027] The first groove 12 includes a first inlet section 121, a middle connecting section 122, and a first outlet section 123. The first inlet section 121, the middle connecting section 122, and the first outlet section 123 are connected in sequence. The first inlet section 121 and the first outlet section 123 are L-shaped, which allows the first inlet section 121, the middle connecting section 122, and the first outlet section 123 to be distributed in an S-shape on the first contact surface 11. This allows the connecting cavity to reach all areas within the die-casting mold, making the temperature of the die-casting mold more uniform and improving the yield of the casting.

[0028] The second groove 22 includes a second inlet section 221 and a second outlet section 222. The first inlet section 121 is connected to the second inlet section 221, and the first outlet section 123 is connected to the second outlet section 222. The connection between the first inlet section 121 and the second inlet section 221 facilitates the placement of the pipe 3 therein. At the same time, the first outlet section 123 and the second outlet section 222 are also connected to each other, which facilitates the placement of the pipe 3 inside the space enclosed by the two sections, so that the pipe 3 can be placed in various positions inside the die-casting mold.

[0029] The cross-sections of the first inlet section 121, the second inlet section 221, the first outlet section 123, and the second outlet section 222 are semi-circular. Normally, the cross-section of the oil flow pipeline 3 is circular. By machining the cross-sections of the first inlet section 121, the second inlet section 221, the first outlet section 123, and the second outlet section 222 into a semi-circular shape, the pipeline 3 can abut against the inner wall of the connecting cavity when placed inside, thus improving the thermal conductivity of the oil.

[0030] Because the die-casting mold needs to be machined into a certain shape, a protrusion 13 is formed on the upper module 1. The upper side of the protrusion 13 cooperates with the pressure block on the die-casting mold to press the molten metal into shape. The middle connecting section 122 is recessed towards the side of the protrusion 13. The middle connecting section 122 and the second contact surface 21 form a placement cavity, and the pipe 3 is wound around the placement cavity. The pipe 3 can extend into the middle connecting section 122, and the middle connecting section 122 extends towards the side where the protrusion 13 is located, so that the pipe 3 can be arranged inside the protrusion 13, so that the temperature on the protrusion 13 is consistent with the overall temperature of the die-casting mold, and the temperature uniformity of the die-casting mold is higher.

[0031] Pipeline 3 is attached to the inner wall of the middle connecting section 122. The heat transfer efficiency between the oil and the die-casting mold is higher, which makes the temperature change of the protrusion 13 faster and improves the yield.

[0032] A positioning block 14 is protruding on the first contact surface 11, and a positioning groove 23 is recessed on the second contact surface 21. The positioning block 14 is inserted into the positioning groove 23. By interlocking the positioning block 14 with the positioning groove 23, the assembly speed between the upper module 1 and the lower module 2 can be improved, and the docking difficulty can be reduced.

[0033] The upper module 1 has a first positioning hole 4 and the lower module 2 has a second positioning hole 5. Bolts pass through the first positioning hole 4 and the second positioning hole 5 and are fastened to nuts. The upper module 1 and the lower module 2 are connected together by bolts, which facilitates subsequent disassembly and installation.

[0034] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A die-casting mold, characterized in that, The device includes an upper module (1) and a lower module (2). The upper module (1) is mounted on the lower module (2). The upper module (1) has a first contact surface (11) and the lower module (2) has a second contact surface (21). The first contact surface (11) and the second contact surface (21) are in contact. The first contact surface (11) has a first groove (12) and the second contact surface (21) has a second groove (22). The first groove (12) and the second groove (22) form a communicating cavity. A pipe (3) is installed in the communicating cavity, and oil flows in the pipe (3).

2. The die-casting mold according to claim 1, characterized in that, The first groove (12) includes a first inlet section (121), a middle connecting section (122) and a first outlet section (123), the first inlet section (121), the middle connecting section (122) and the first outlet section (123) are connected in sequence, and the first inlet section (121) and the first outlet section (123) are L-shaped.

3. The die-casting mold according to claim 2, characterized in that, The second groove (22) includes a second inlet section (221) and a second outlet section (222), wherein the first inlet section (121) is connected to the second inlet section (221) and the first outlet section (123) is connected to the second outlet section (222).

4. The die-casting mold according to claim 3, characterized in that, The cross-sections of the first inlet section (121), the second inlet section (221), the first outlet section (123), and the second outlet section (222) are semi-circular.

5. The die-casting mold according to claim 2, characterized in that, The upper module (1) has a protrusion (13) formed thereon, the middle connecting section (122) is recessed on the side of the protrusion (13), the middle connecting section (122) and the second contact surface (21) form a placement cavity, and the pipeline (3) is connected to the placement cavity.

6. The die-casting mold according to claim 5, characterized in that, The pipe (3) abuts against the inner wall of the central connecting section (122).

7. The die-casting mold according to claim 1, characterized in that, A positioning block (14) is protruding on the first contact surface (11), and a positioning groove (23) is recessed on the second contact surface (21), and the positioning block (14) is inserted into the positioning groove (23).

8. The die-casting mold according to claim 1, characterized in that, The upper module (1) has a first positioning hole (4), and the lower module (2) has a second positioning hole (5). The bolt passes through the first positioning hole (4) and the second positioning hole (5) and is fastened to the nut.

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